• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The invention relates to a method for diagnosing vehicle functions, comprising the step of: - determining (s301; s340) at least one suitable opportunity for diagnosing vehicle functions by means of a system (230) included in the vehicle for predicting the conditions of operation of the vehicle. The invention also relates to a computer program product comprising program code (P) for a computer (210; 220) for implementing a method according to the invention. The invention also relates to a device (299) and a motor vehicle (100) equipped with the device (299). Figure 2 for publication
    公开号:SE1251111A1
    申请号:SE1251111
    申请日:2012-10-03
    公开日:2014-04-04
    发明作者:Ola Stenlåås
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    1015202530adaptation of said relevant sensor or component. Adaptation can be performedin different ways, depending on the sensor or component in question.
    When diagnosing and possibly adapting sensors and otherscomponents of the vehicle, the vehicle may sometimes exceed statutory requirementsmaximum emission levels or have reduced driveability. At diagnosis andpossible adaptation of sensors and other components of the vehicle cansometimes the driving experience is also negatively affected, e.g. by the vehicleengine sounds different during said diagnosis and adaptation. One way toDealing with these issues can be done through the current engine management systemadjusts sensors and actuators to known reference driving conditions.
    It is desirable for several reasons to minimize the time that the vehicle exceedssaid statutory maximum emission levels or have reduced driveability.
    In order to perform a correct diagnosis, it is in many cases desirable tothe vehicle is propelled at a certain condition, e.g. including a constantsaid condition suddenlythe engine speed is no longer constant,engine speed. Then it ceases, for example thenthe diagnosis may be forcedterminated prematurely, before a reliable result is obtained. Hereby can be saiddiagnosis needs to be performed again.
    SUMMARY OF THE INVENTIONThus, there is a need to reliably diagnose andpossible adaptation of different units of a vehicle, to avoid orreduce the negative effects described above.
    An object of the present invention is to provide a novel andadvantageous procedure for diagnosing vehicle functions.1015202530Another object of the invention is to provide a new and advantageousdevice and a new and advantageous computer program for diagnosingvehicle functions.
    A further object of the invention is to provide a method, adevice and a computer program to reduce or minimize environmental impactat diagnosis and any necessary adaptation of vehicle functions.
    A further object of the invention is to provide a method, adevice and a computer program to reduce fuel consumption atdiagnosis and any necessary adaptation of vehicle functions.
    A further object of the invention is to provide a method, adevice and a computer program to increase the probability of correctperforming diagnostics and any necessary adaptation ofvehicle functions without undesired interruption.
    A further object of the invention is to provide a method, adevice and a computer program for maintaining or increasing the mobility ofthe vehicle at diagnosis and possible adaptation of vehicle functions.
    These purposes procedure forachieved with a diagnosis ofvehicle functions according to claim 1.
    According todiagnosis of vehicle functions, including the steps of:one aspect of the invention there is provided a method ofdetermine at least one suitable time for said diagnosis; anddetermine said at least one suitable occasion by means of one of the vehicleincluded a system for predicting the vehicle's driving conditions.
    By using information from said system for predictingthe vehicle's driving conditions on how the vehicle is most likely to be1015202530performed in the future may be unnecessary, for example, for short, diagnosesand adaptations of vehicle functions are avoided. This avoids the samediagnosis and / or adaptation must be performed several times. In this case, one canenvironmental impact when performing said diagnosis and adaptationminimized. In this case, a drivability of the vehicle can advantageously be maintained atperforming said diagnosis and adaptation.provided onediagnosis of vehicle functions, including the steps of:According to one aspect of the invention the method ofdetermine at least one suitable time for said diagnosis; anddetermine said at least one suitable occasion by means of one of the vehicleincluded a so-called Look-ahead system.
    In this case, one or more suitable future opportunities for diagnosis andany necessary adaptation of one or more selected vehicle functionsprovided.
    Said prediction may include the vehicle's route characteristics. HerebyFor example, said suitable occasion can be accurately determinedbasis of, for example, the slope of a future route.
    Said prediction may include external characteristics, for exampletraffic situations. In doing so, said appropriate opportunity in a careful mannerdetermined on the basis of, for example, a previous standstillvehicle queue.
    Said prediction may include the driving style of the vehicle operator, the driver.
    In this case, said suitable occasion can be accurately determined on the basis ofhow the vehicle operator normally drives his vehicle. This may includefast or slow accelerations, heavy or soft decelerations,etc.1015202530Said prediction may include the vehicle operator's prevailing driving style.
    In this case, a prevailing driving style can form the basis for an estimated futuredriving style. This can include fast or slow accelerations, powerfulor soft decelerations, etc.
    Said prediction may include the vehicle operator's historical driving style.
    In this case, a historical driving style can form the basis for an estimated futuredriving style. This can include fast or slow accelerations, powerfulor soft decelerations, etc.
    Said vehicle functions may include at least one function ofvehicle functions sensors, virtual sensors, sensor models, actuators,other vehicle hardware and consumables. The inventivethe procedure is thus versatile.
    Examples of other vehicle hardware may be an oxidation catalyst, SCRcatalyst or DPF filter.
    Examples of consumables can be vehicle fuel, such as diesel,gasoline or ethanol. Another example of consumables may be onereducing agents for an SCR system, e.g. Adblue. Another example ofconsumables can be lubricating oil for an engine or transmission atthe vehicle.
    The procedure may further comprise the step of:determine said suitable occasion based on predicted operating conditions.
    In this case, advantageously said diagnosis can be performed at times when it is includedfairly high probability can actually succeed. This avoids performingdiagnoses on less favorable occasions, when said diagnosis inworst case must be terminated prematurely, resulting in an unreliable or notpresent results of said diagnosis.1015202530The procedure may further include the steps of:- determine prevailing operating conditions; anddetermine said appropriate occasion based on said determinedoperating conditions. In this case, a substantially optimal diagnosis can be performed.
    In this case, a reliable diagnosis can advantageously be performed.
    Said operating conditions can be internal or external operating conditions.
    Said internal operating conditions may be at least one of substantially uniformengine load, substantially even engine speed, falling engine speed, closeimminent change of gear stage of a gearbox.
    Said internal operating conditions may be at least one of increasing ordecreasing engine load, increasing or decreasing engine speed, towing (whereno fuel is injected into the cylinders of the vehicle's engine) and exhaust brakingat a predetermined level. Said internal operating conditions may beat least one of even, increasing and / or decreasing exhaust temperatureand / or concentration of substance and / or fraction of substance at apredetermined point in the exhaust system. Said internal operating conditions canbe at least one of gear selection, even, increasing and / or decreasing chargeand / or consumption in energy storage, for example a battery in the vehicle.
    Said internal operating conditions may be at least one of even, increasing,and / or reducing the use of the fan and / or cooling system nos the vehicleand increasing, and / or decreasingeven, engine temperature,coolant temperature and / or oil temperature.
    Said external operating conditions may be at least one ofclimatic conditions. Said climatic conditions may includeambient temperature, prevailing pressure of ambient air, humidity.
    Examples of other external operating conditions can be the slope of a surfacefor the vehicle or road quality.1015202530The procedure may further include the steps of:- select a vehicle function; andperform said diagnosis at said at least one suitable occasion.
    The procedure may further include the steps of:- select a vehicle function; andperform said diagnosis at said at least one suitable occasion,at least one operating condition.
    The procedure may further include the steps of:use the results of said diagnosis to, where applicablecorrect a vehicle function for an adaptation to said result.
    The procedure may further include the steps of:use the results of said diagnosis to, where applicableadapt a vehicle function for an adaptation to said results.
    The procedure is easy to implement in existing motor vehicles. Software fordiagnostic of vehicle functions according to the invention can be installed in acontrol unit of the vehicle in the manufacture of the same. A buyer of the vehiclemay thus be able to choose the function of the procedure as an option.
    Alternatively, software including program code can perform the innovativethe procedure for diagnosing vehicle functions is installed in a control unitat the vehicle when upgrading at a service station. In this case, canthe software is loaded into a memory in the controller. Implementation of itThe innovative procedure is thus cost-effective.
    Software that includes program code for diagnosing vehicle functionscan be easily updated or replaced. Furthermore, different parts of the software such asincludes program code for diagnosing vehicle functions replacedindependent of each other. This modular configuration is advantageous from onemaintenance perspective.1015202530According todiagnosis of vehicle functions, including:one aspect of the invention provides a device formeans for determining at least one suitable occasion for saiddiagnosis;bodies adapted to perform a prediction of the vehicleconditions of performance, andbodies adapted to determine the said at least one appropriate occasionbasis of said conditions of performance.
    According to one aspect of the invention, there is provided an apparatus fordiagnosis of vehicle functions, including:a Look-Ahead system included with the vehicle; andbodies adapted to determine at least an appropriate occasion fordiagnosis of at least one vehicle function.
    According todiagnosis of vehicle functions, including:one aspect of the invention provides a device formeans for determining at least one suitable occasion for saiddiagnosis;a Look-Ahead system included with the vehicle; andbodies adapted to determine the said at least one appropriate occasionbasis of information established by said Look-Ahead system.
    Said Look-Ahead system may include an electronic map includingtopographic data relating to an oncoming route of the vehicle.
    The device may comprise:bodies adapted to determine the route characteristics of the vehicle.
    The device may comprise:1015202530bodies adapted to determine external characteristics, for exampletraffic situations.
    The device may comprise:bodies adapted to determine the driving style of the vehicle operator, driver, driver.
    In the device, said vehicle functions may include at least onefunction of the vehicle functions sensors, virtual sensors, sensor models,actuators, other vehicle hardware and consumables.
    The device may further comprise:bodies adapted to determine said appropriate occasion based onpredicted operating conditions.
    In the device, said operating conditions may be at least one ofsubstantially even engine load, substantially even engine speed, descendingengine speed and imminent change of gear ratios of a gearbox.
    In the device, said operating conditions can be internal and in this case beat least one of increasing or decreasing engine load, increasing or decreasingengine speed, towing of the vehicle's engine and exhaust braking at apredetermined level. Said internal operating conditions may be at least oneof even, increasing and / or decreasing exhaust gas temperature and / orconcentration of substance and / or fraction of substance at a predetermined point inthe exhaust system. Said internal operating conditions may be at least one ofgear selection, even, increasing and / or decreasing charge and / or consumption inbattery of the vehicle. Mentioned internalenergy storage, for example oneoperating conditions may be at least one of even, increasing, and / orreduced use of the fan and / or cooling system of the vehicle and even,increasing, and / or decreasing engine temperature, coolant temperature and / oroil temperature.101520253010In the device, said operating conditions may be at least one ofclimatic conditions, ambient temperature and prevailing pressure in ambientair.
    The device may further comprise:- means adapted to select a vehicle function; andmeans adapted to perform said diagnosis at said at leastan appropriate opportunity.
    The device may further comprise:- means adapted to select a vehicle function; andmeans adapted to perform said diagnosis at said at leastat an appropriate time, in at least one operating condition.
    The device may further comprise:bodies adapted to use the result of said diagnosis to iwhere applicable, correct a vehicle function for an adaptation to the saidresults.
    The above objects are also achieved with a motor vehicle which includesthe device for diagnosing vehicle functions. The motor vehicle can bea truck, bus or car.
    According to one aspect of the invention, there is provided a computer program fordiagnosis of vehicle functions, wherein said computer program includesprogram code to cause an electronic controller or another computerconnected to the electronic control unit to perform the steps according to any ofclaims 1-11.
    According to one aspect of the invention, there is provided a computer program fordiagnosis of vehicle functions, wherein said computer program includesprogram code stored on a computer-readable medium to cause one101520253011electronic control unit or another computer connected to the electronicthe control unit to perform the steps according to any one of claims 1-11.
    According to one aspect of the invention, there is provided a computer software productcomprising a program code stored on a computer readable medium forperforming the method steps according to any one of claims 1-11, when saidcomputer programs run on an electronic controller or other computer connectedto the electronic control unit.
    Additional objects, advantages and novel features of the present inventionthe invention will be apparent to those skilled in the art from the following details, as wellvia the practice of the invention. While the invention is described below,it will be apparent that the invention is not limited to those specifically describedthe details. Those who have access to the teachings herein will recognizeand incorporations into othersadditional applications, modificationsareas which are within the scope of the invention.SUMMARY DESCRIPTION OF THE DRAWINGSFor a more complete understanding of the present invention and furtherpurposes and benefits thereof, reference is now made to the following detaileddescription to be read together with the accompanying drawings there equallyreference numerals refer to equal parts in the various figures, and in which:Figure 1 schematically illustrates a vehicle, according to an embodiment ofthe invention;Figure 2 schematically illustrates a device of the vehicle shown in Figure 1, according toan embodiment of the invention;Figure 3a schematically illustrates a flow chart of a method, according to aembodiment of the invention;Figure 3b schematically illustrates in further detail a flow chart over onemethod, according to an embodiment of the invention; and101520253012Figure 4 schematically illustrates a computer, according to an embodiment ofthe invention.
    DETAILED DESCRIPTION OF THE FIGURESReferring to Figure 1, a side view of a vehicle 100 is shownThe exemplary vehicle 100 consists of a tractor 110 and a trailer 112.
    The vehicle can be a heavy vehicle, such as a truck or a bus. The vehiclecan alternatively be a car.
    Here, the term "link" refers to a communication link that may be onephysical wire, such as an opto-electronic communications wire, or anon-physical wiring, such as a wireless connection, such as a radio ormicrowave link.
    The vehicle 100 comprises a so-called Look-ahead system and a suitableset of sensors, virtual sensors, sensor models, actuators, othervehicle hardware and systems including consumables.
    Here, the terms actuator and actuator are used synonymously. Used hereinthe terms sensor and sensor are synonymous.
    Here, the term consumable refers to a fluid in a subsystem ofthe vehicle. Said consumables may be in gaseous, liquid orfixedconsumable.form. Said consumables can also be namedReferring to Figure 2, a device 299 of the vehicle 100 is shown.
    The device 299 is arranged in the tractor 110.
    The device 299 comprises a first control unit 210. Said first control unit210 is signal connected to a Look-ahead system 230 of the vehicle 100 via a101520253013link L230. Said Look-ahead system 230 is arranged for communicationwith the first control unit 210 via said link L230.
    Said Look-ahead system 230 can also be called a prediction systemof the vehicle's driving conditions. Said Look-ahead system 230 caninclude a device 400 as described with reference to Figure 4. SaidLook-ahead system 230 may include a set of different sensors forto continuously detect appropriate parameters. Said parameters can beparameters associated with in-vehicle quantities. Sagdaparameters can be parameters associated with the vehicle textsquantities. Said Look-ahead system 230 is arranged to determine differentconditions of performance on the basis of said established parameters.
    Furthermore, said Look-ahead system 230 may include a number of stored onescalculation models to determine different performance conditions. SagdaLook-ahead system 230 may include an electronic map includinginformation on a topography relevant to the vehicle's route. Said predictionmay include information on the vehicle's route characteristics, such as inclinationfor the vehicle's current and future route.
    Said Look-ahead system 230 may include means for communication withan information system (not shown). Said information system is arranged tocontinuously or intermittently send signals including information aboutsystem 230.information systems may be arranged to send said signals to saidperformance conditions for said Look-ahead SaidLook-ahead system 230 via a satellite or by means of a suitable onecommunication system. Said information system may include at leasta stationary device, for example in the form of a stationary traffic camera, and / orat least one mobile platform, such as a helicopter or avehicles in front. Said Look-ahead system 230 is arranged to onon the basis of said received signals predict said performance conditions.arranged to determine differentSaid Look-ahead system 230 is101520253014performance conditions based on said signals. Said prediction caninclude external characteristics, such as traffic situations, stops inforward traffic, road works, etc.
    Said first control unit 210 can according to one embodiment be arranged todetermine said conditions of performance on the basis of informationprovided by said Look-ahead system 230.
    Said look-ahead system 230 is according to one embodiment arranged to be determinedoperating conditions of the vehicle. Said Look-ahead system 230 is according to oneexecution arranged to determine probable future operating conditions forthe vehicle. Said Look-ahead system 230 is according to one embodiment arranged todetermine said at least one suitable occasion based on saidprobable future operating conditions. Said operating conditions can, for examplebe at least one of substantially even motor load, substantially evenengine speed, falling engine speed and imminent change ofgearshift of a gearbox. Said operating conditions may be at least oneof climatic conditions,ambient temperature and prevailing pressure atambient air.
    According to an alternative embodiment, said first control unit 210 may be arrangedto determine said operating conditions.
    Said Look-ahead system 230 may be arranged to determine at leastan appropriate opportunity to perform said diagnosis.
    A sensor configuration 240 is provided for communication with the firstthe control unit 210 via a link L240. Said link L240 may include a suitable onenumber of communication links, for example one communication link for eachsensor in the sensor configuration 240. Said link L240 may include an internal onenetwork of the vehicle 100.101520253015Said sensor configuration 240 may comprise any suitable numbersensors and / or virtual sensors and / or sensor models. Sagdasensors, virtual sensors and sensor models can be namedvehicle functions.
    Examples of said sensors can be air mass flow sensors, sensors forcharge air temperature, sensor for ambient temperature, sensor forambient pressure, throttle pressure sensor, boost pressure sensor, camshaft sensor,crankshaft sensors, cooling water temperature sensors, rail pressure sensors, cylinder pressure sensors,oil level sensor,coolant level sensors, fuel level sensors, oil pressure sensors,exhaust brake sensor, NOX sensor, lambda probe, etc.
    Some of the above exemplified sensors, and others not specifiedsensors, can be replaced or supplemented by a suitable virtual sensor and / orsensor model.
    Said sensors, virtual sensors and sensor models can be usedindividually or in an appropriate combination to determine prevailing values for agiven magnitude.
    According to one example, the diagnosis of a sensor, virtual sensor orsensor model is performed by, for certain operating conditions, comparing valuesmeasured or calculated by two or more other sensors, virtual sensorsrespective sensor models. In this case, a measure of a deviation can be determinedfrom an expected value of a selected sensor, virtual sensor or sensor model.
    According to one example, adaptation of a sensor associated with an error can be virtualsensor or sensor model is performed by compensating for saidestablished deviation.
    An actuator configuration 250 is provided for communication with the firstthe control unit 210 via a link L250. Said link L25O may include a suitable one101520253016number of communication links, for example one communication link for eachactuator in actuator configuration 250. Said link L250 may include oneinternal network of the vehicle 100.
    Said actuator configuration 250 may comprise any suitable numberactuators. Said actuators can be called vehicle functions.
    Examples of said actuators can be a throttle, EGR valve, VTG actuator,HC injector in onereducing agents,exhaust brake actuator, finishing system,dosage unit for, for example, Adblue, in onefinishing systems, fuel injectors, etc.
    According to one example, diagnostics of an actuator can be performed by, atcertain operating conditions, determine the performance of said actuators and comparethe result with an expected result. Said diagnosis can be performed atvarious predetermined conditions of the actuator. In the case said actuator is onedampers, examples of such conditions may be completely open, to a certain extentdegree open or closed. In this case, for example, a possible leakdetermined.
    According to an example, adaptation in this case may mean that in a suitable mannercompensate for a deviation from desired performance.
    A hardware system 260 is presently provided with the vehicle. Sagdahardware system 260 may include a number of hardware devices. Thesehardware devices are referred to herein as "other hardware" and do not refer tosensors, virtual sensors, sensor models and consumables, according toan aspect of the present invention. Said hardware units 260 cancalled vehicle functions.101520253017Said hardware system 260 includes hardware units, for whichdiagnosis and any subsequent adaptation is required, at leastwith a certain frequency.
    Examples of hardware devices, i.e. other hardware, is motor, SCRcatalyst, diesel particulate filter, oxidation catalyst, coupling configuration,battery, etc.
    Not all hardware units of said hardware system 260 neednecessarily be signal connected to the first control unit 210. In this casehowever, it is illustrated that said hardware system 260 is signal connected to itfirst control unit 210 via a link L260.
    According to one example, diagnostics of other hardware can be performed by,under certain operating conditions, determine the performance of said hardware andcompare the result with the expected result. In the case of said hardware, an SCRcatalyst, for example, a degradation of functional surfaces of the SCRthe catalyst is determined.
    According to an example, adaptation in this case may mean that in a suitable mannercompensate for a deviation from desired performance.
    According to one aspect of the invention, said Look-ahead system 230 is providedto establish at least one suitable opportunity to perform diagnosis ofsaid other hardware. Said diagnosis may aim to establish whethersaid other hardware meets certain given performance requirements or desiredfunctionality.
    According to one aspect of the invention, said first control unit 210 is arranged toperform desirable adaptation of said other hardware. Said adaptation may aimto cause said other hardware to meet said certain performance requirements orfunctionality.101520253018Said adaptation can be performed in a suitable manner with dedicated equipmentor calculation model.
    A number of subsystems including various consumables 270 are presentarranged in the vehicle 100. Said subsystems may be suitable subsystemscontaining a fluid. Said fl uid may be at least some of the fuel,reducing agent, heating medium, orlubricants, coolants,detergent. Said fluid is a consumable.
    According to one aspect of the invention, said Look-ahead system 230 is providedto establish at least an appropriate opportunity to diagnosesaid consumables. Said diagnosis may aim to establishwhether said consumables are of a quality or compositionwhich corresponds to a desired quality or composition.
    Said diagnosis can be performed in a suitable manner with the intended purposeequipment or calculation model.
    Said Look-ahead system 230 is arranged to determine at least oneappropriate opportunity to perform a selected diagnosis and possible adaptationof one or more of said vehicle functions. Said appropriate opportunity canbe a certain time. Said appropriate opportunity may be an appropriate onetime interval. Said suitable time interval may be a time interval such asdefined by the time interval 0-15 seconds. Said appropriate time intervals canbe a time interval defined by the time interval 0-30 seconds. Sagdaappropriate time intervals may be a time interval defined by the time interval0-60 seconds. Said suitable time interval may be a time interval such asdefined by the time interval 1-5 minutes. Said suitable time intervals may bea time interval longer than 10 minutes.101520253019A second control unit 220 is provided for communication with the firstthe control unit 210 via a link L220. The second control unit 220 may bedetachably connected to the first control unit 210. The second control unit220 may be a control unit external to the vehicle 100. The second control unit220 may be arranged to perform the innovative process steps according tothe invention. The second controller 220 can be used to chargesoftware for the first controller 210, in particular software for performingthe innovative procedure. The second control unit 220 may alternatively bearranged for communication with the first control unit 210 via an internalnetwork in the vehicle. The second control unit 220 may be arranged to performessentially the same functions as the first control unit 210.
    Figure 3a schematically illustrates a flow chart of a method fordiagnosis of vehicle functions, according to an embodiment of the invention.
    The method comprises a first method step s301. Step s301 includesthe steps to:determine at least one suitable time for said diagnosis; anddetermine said at least one suitable occasion by means of one of the vehicleincluded a system for predicting the vehicle's driving conditions. Afterstep s301 terminates the procedure.
    Figure 3b schematically illustrates a flow chart of a method fordiagnosis of vehicle functions, according to an embodiment of the invention.
    The method includes a first method step s310. Procedure step s310includes the step of selecting at least one vehicle function todiagnosed and possibly corrected. Said choices may include the choice of morethan a type of vehicle function. For example, a sensor 240 and an actuator250 is selected. Said selection may include selection of more than one vehicle function of onecertain category. For example, two different sensors can be selected. Said firstcontrol unit 210 may be arranged to automatically select one or more101520253020vehicle functions. After the process step s310, a subsequent is performedprocedure step s320.
    The process step s320 includes the step of predicting the vehicleconditions of performance. Said Look-ahead system 230 may bearranged to determine probable driving conditions for the vehicle 100.
    This can be done on the basis of information from, for example, sensors in the vehicleand / or information received from said information system and / orinformation stored in a memory of the Look-ahead system 230. Saidstored information can at least partly be in the form of an electronicmap. After the process step s320, a subsequent process step is performedS330.
    The process step s330 includes the step of determining operating conditions. SagdaLook-ahead system 230 may be arranged to determine saidoperating conditions on the basis of said choice of vehicle function. Eachvehicle function may be associated with predetermined operating conditions, atwhich operating conditions said diagnosis is appropriate. After the procedure steps330, a subsequent process step s340 is performed.
    Method step s340 includes the step of determining at least onesuitable opportunity for diagnosis by means of a system included in the vehicle230 for predicting the vehicle's driving conditions. The step s340 canopportunity fordiagnosis on the basis of said conditions of performance. The step s340 canopportunity fordiagnosis on the basis of said operating conditions. After the procedure steps340, a subsequent procedure step s350 is performed.include the step of determining at least one appropriateinclude the step of determining at least one appropriateThe procedure step s350 includes the step of performing diagnosis. Sagdadiagnosis is performed at said fixed at least one occasion. Multiplediagnoses, for the same vehicle function or for different vehicle functions,101520253021can according to one embodiment be performed simultaneously. Said diagnosis can be performedin various appropriate ways, b | .a. depending on the type of vehicle functionselected. The step S350 may include the step of generating one, where applicableerror code regarding said diagnosis. Said error code may be displayed to a driverof the vehicle by means of suitable equipment. Said error code can be stored infor example, the first controller 210. The step S350 includes the step ofdetermine a result for each successfully performed diagnosis. Sagdaresults may include an indication of a deviation from a normal and correctbehavior, characteristics or quality. After the procedure step S350, one is performedsubsequent procedure step S360.
    The step step S360 includes the step of performing adaptation. Said adaptationmay include actively correcting for said established deviation. Sagdaadaptation can be performed in a suitable manner, b | .a. depending on whichvehicle function and associated deviation that apply. Step S360 caninclude the step of generating, where applicable, an error code regardingsagda adaptation. Said error code can be displayed to a driver of the vehicle by means ofappropriate equipment. Said error code can be stored in, for example, the firstthe control unit 210. According to one embodiment, the step S360 may include the step offeedback information about said diagnosis and adaptation to onevehicle operator. This can be done by means of suitable means, for example onedisplay screen. Many adaptations can be performed automatically by means of saidfirst control unit 210. In this case, for example, a misleading sensor valuecompensated for. Some adaptations require manual intervention, such asto replace a misdiagnosed consumable. After the procedure step S360the procedure is terminated.
    Referring to Figure 4, a diagram of an embodiment of one is showndevice 400. The control units 210 and 220 described with reference toFigure 2 may in one embodiment comprise the device 400. The device 400includes a non-volatile memory 420, a data processing unit 410, and aread / write memory 450. The non-volatile memory 420 has a first memory portion 430101520253022wherein a computer program, such as an operating system, is stored for controlthe function of the device 400. Furthermore, the device 400 comprises a buscontroller, a serial communication port, an I / O device, an A / D converter, atime and date input and transfer unit, an event counter andan interrupt controller (not shown). The non-volatile memory 420 also hasa second memory part 440.
    A computer program P is provided which includes routines fordetermine at least one suitable opportunity for diagnosis by means of one ofthe vehicle including that of the vehiclesystems for predictingconditions of performance under the innovative procedure.
    The computer program P includes routines for determining the appropriateopportunity based on predicted operating conditions. The computer program P includesprocedures for determining said appropriate occasion based on prevailingoperating conditions.
    The computer program P includes routines for:- select a vehicle function; andperform said diagnosis at said at least one suitable occasion.
    The computer program P includes routines for:- select a vehicle function; andperform said diagnosis at said at least one suitable occasion,at least one operating condition.
    The computer program P includes routines for:use the results of said diagnosis to, where applicablecorrect a vehicle function for an adaptation to said result.
    According to one aspect of the invention, there is provided a computer program P whichinclude routines for determining at least one suitable time for101520253023diagnosis and any necessary adaptation of a vehicle functionby means of a system included in the vehicle for predicting the vehicleconditions of performance under the innovative procedure.
    According to one aspect of the invention, there is provided a computer program P whichinclude routines for determining at least one suitable time fordiagnosis and any necessary adaptation of a vehicle functionby means of a Look-ahead system 230 included in the vehicle.
    The program P can be stored in an executable way or in a compressed wayin a memory 460 and / or in a read / write memory 450.
    When it is described that the data processing unit 410 performs a certain functionit should be understood that the data processing unit 410 performs a certain part ofthe program which is stored in the memory 460, or a certain part of the program whichis stored in the read / write memory 450.
    The data processing device 410 can communicate with a data port 499 viaa data bus 415. The non-volatile memory 420 is for communicationwith the data processing unit 410 via a data bus 412. The separate memory460 is intended to communicate with the data processing unit 410 via adata bus 411.the data processing unit 410 via a data bus 414. To the data port 499 canfor example the links L220, L230, L240, L250, L260 and L270 are connected (see Figure 2).
    The read / write memory 450 is arranged to communicate withWhen data is received on data port 499, it is temporarily stored in the othermemory part 440. When received input is temporarily stored, isthe data processing unit 410 prepared to perform code execution ona manner described above. According to one embodiment, signals include receivedon the data port 599 information determined by the Look-ahead system 230.
    According to one embodiment, signals received at the data port 499 includeinformation on at least one suitable opportunity to diagnose a selected person1015202524vehicle function, for example a sensor configuration 240, an actuator 250,other hardware 260 of the vehicle or consumables 270. Theythe received signals on the data port 499 can be used by the device 400to perform said diagnosis in said at least one suitableopportunity. The received signals on data port 499 can be used bythe device 400 for performing said diagnosis at saidat least one suitable occasion in at least one operating condition. The receivedthe signals on the data port 499 may be used by the device 400 touse the results of said diagnosis to, where applicablecorrect a vehicle function for an adaptation to said result.
    Parts of the methods described herein can be performed by the device 400 by means ofof the data processing unit 410 running the program stored in the memory 460or read / write memory 450. When the device 400 runs the program, it is executedprocedures described herein.
    The foregoing description of the preferred embodiments ofthe present invention has been provided for the purpose of illustrating and describingthe invention. It is not intended to be exhaustive or restrictivethe invention to the described variants. Obviously many will comemodifications and variations to be apparent to those skilled in the art. The embodimentswas selected and described to best explain the principles of the invention andits practical applications, thus enabling professionals to understandthe invention for different embodiments and with the different modifications asare suitable for the intended use.
    权利要求:
    Claims (26)
    [1]
    A method for diagnosing vehicle functions, comprising the step of: - determining at least one suitable time for said diagnosis; characterized by the step of: - determining (s301; s340) said at least one suitable occasion by means of a included system (230) operating conditions. of the vehicle for the prediction of the vehicle
    [2]
    The method of claim 1, wherein said prediction includes the route characteristics of the vehicle.
    [3]
    A method according to claim 1 or 2, wherein said prediction includes external characteristics, for example traffic situations.
    [4]
    A method according to any one of claims 1-3, wherein said prediction includes the driving mode of the vehicle operator.
    [5]
    A method according to any preceding claim, wherein said vehicle functions comprise at least one function of the vehicle functions sensors (240), virtual sensors (240), sensor models (240), actuators (250), other vehicle hardware (260) and consumables (270).
    [6]
    A method according to any one of the preceding claims, further comprising the step of: - determining said suitable time based on predicted operating conditions.
    [7]
    A method according to claim 6, wherein said operating conditions are at least one of substantially even engine load, substantially equal engine speed, falling engine speed and imminent change of gear stage of a gearbox. 10 15 20 25 30 26
    [8]
    A method according to claim 6, wherein said operating conditions are at least one of the climatic conditions, ambient temperature and prevailing pressure of ambient air.
    [9]
    A method according to any one of the preceding claims, further comprising the steps of: - selecting a vehicle function; and - performing said diagnosis at said at least one convenient occasion.
    [10]
    A method according to any one of claims 6-8, further comprising the steps of: - selecting a vehicle function; and - performing said diagnosis at said at least one suitable occasion, at at least one operating condition.
    [11]
    A method according to any one of the preceding claims, further comprising the steps of: - using the result of said diagnosis to correct, where applicable, a vehicle function for an adaptation to said result.
    [12]
    A device (299) for diagnosing vehicle functions, comprising: - means (210; 220; 400; 230) for determining at least one suitable time for said diagnosis, characterized by: - means (210; 220; 400; 230) adapted to make a prediction of the driving conditions of the vehicle, and - means (210; 220; 400; 230) adapted to determine the said at least one suitable occasion on the basis of said driving conditions.
    [13]
    Device according to claim 12, comprising: - means (210; 220; 400; 230) adapted to determine the route characteristics of the vehicle. 10 15 20 25 30 27
    [14]
    Device according to claim 12 or 13, comprising: - means (210; 220; 400; 230) adapted to determine external characteristics, for example traffic situations.
    [15]
    Device according to any one of claims 12-14, comprising: - means (210; 220; 400) adapted to determine the driving mode of the vehicle operator.
    [16]
    The device of any of claims 12-15, wherein said vehicle functions include at least one function of the vehicle functions sensors (240), virtual sensors (240), sensor models (240), actuators (250), vehicle hardware (260) and consumables (270). . Other
    [17]
    Device according to any one of claims 12-16, further comprising: - means (210; 220; 400, 230) adapted to determine said suitable time based on predicted operating conditions.
    [18]
    The device of claim 17, wherein said operating conditions are at least one of substantially even engine load, substantially equal engine speed, falling engine speed and imminent change of gear steps of a gearbox.
    [19]
    The device of claim 17, wherein said operating conditions are at least one of the climatic conditions, ambient temperature and prevailing pressure of ambient air.
    [20]
    The device of any of claims 12-19, further comprising: - means (210; 220; 400) adapted to select a vehicle function; and - means (210; 220; 400) adapted to perform said diagnosis at said at least one convenient occasion.
    [21]
    The device of any of claims 17-19, further comprising: - means (210; 220; 400) adapted to select a vehicle function; and means (210; 220; 400) adapted to perform said diagnosis at said at least one convenient time, at at least one operating condition.
    [22]
    The device of any of claims 12-21, further comprising: - means (210; 220; 400) adapted to use the result of said diagnosis to correct, where appropriate, a vehicle function for an adaptation to said result.
    [23]
    Motor vehicle (100; 110) comprising a device according to any one of claims 12-22.
    [24]
    A motor vehicle (100; 110) according to claim 23, wherein the motor vehicle is something of a truck, bus or passenger car.
    [25]
    A computer program (P) for diagnosing vehicle functions, said computer program (P) comprising program code for causing an electronic control unit (210; 400) or another computer (220; 400) connected to the electronic control unit (210; 400) to performing the steps according to any one of claims 1-11.
    [26]
    A computer program product comprising a program code stored on a computer readable medium for performing the method steps of any of claims 1-11, when said computer program is run on an electronic control unit (210; 400) or another computer (220; 400) connected to the electronic control unit (210; 400).
    类似技术:
    公开号 | 公开日 | 专利标题
    US9805522B2|2017-10-31|Method for planning a vehicle diagnosis
    JP6692884B2|2020-05-13|In particular, a method of operating a car with deterioration over time and energy efficiency
    EP1606503B1|2008-11-26|On board diagnostics |
    US8919105B2|2014-12-30|DPF regeneration control device, DPF regeneration control method, and DPF regeneration support system
    JP4484879B2|2010-06-16|A method to evaluate an estimation system for the amount of pollutant compounds released into the exhaust gas of automobile diesel engines.
    KR101999879B1|2019-07-12|Method for operating a vehicle
    CN102435446B|2015-02-18|Method of monitoring in-use performance ratios of onboard diagnostic systems for plug-in hybrid electric vehicles
    DE102007047763B4|2014-06-18|System and method for estimating a torque
    DE10133944A1|2002-01-31|Diesel On-Board-Diagnostic-II system for detecting degradation in catalyser activity indicates when current hydrocarbon conversion value exceeds target emission capability threshold
    US8806928B2|2014-08-19|Catalyst deterioration detection apparatus and catalyst deterioration detection method for internal combustion engine
    SE1251111A1|2014-04-04|Device and method for diagnosing vehicle functions
    KR20180105574A|2018-09-28|Method for the diagnosis of a scr system
    SE1350527A1|2014-10-31|Fuel quality detection method and system
    US20110153179A1|2011-06-23|Method for operating a diesel engine system
    EP3140524B1|2019-01-30|Method and system for monitoring of a physical quantity related to a particulate mass in at least one exhaust pipe
    US10449966B2|2019-10-22|Method for reducing nitrogen oxide emissions of a diesel vehicle
    JP6521590B2|2019-05-29|Method and apparatus for performing a reference measurement in a sensor of an internal combustion engine
    SE538625C2|2016-10-04|System and method for diagnosing a sensor of an exhaust gas cleaning system
    CN102102565B|2014-11-12|Method and device for on-board error diagnosis in operation of internal combustion engine of motor vehicle
    KR101993434B1|2019-09-30|Control of preparatory measures in a vehicle
    CN111612937A|2020-09-01|On-board diagnostic monitoring program planning and execution
    SE536774C2|2014-07-29|Method and system for determining a sensor function for a PM sensor by means of pressure comparisons
    SE1050042A1|2011-07-19|Method and apparatus for preventing fuel accumulation in an exhaust system of a motor vehicle
    SE1151074A1|2013-05-15|Procedure and system for diagnosing an internal combustion engine
    CN109421679A|2019-03-05|A kind of adaptive active brake method of vehicle
    同族专利:
    公开号 | 公开日
    SE536717C2|2014-06-17|
    DE112013004477T5|2015-06-03|
    WO2014055023A1|2014-04-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7650210B2|1995-06-07|2010-01-19|Automotive Technologies International, Inc.|Remote vehicle diagnostic management|
    JP4401356B2|2005-03-31|2010-01-20|富士通テン株式会社|Method for identifying cause of decrease in frequency of performing abnormality detection and method of improving frequency of performing abnormality detection|
    JP4501838B2|2005-10-25|2010-07-14|株式会社デンソー|Vehicle abnormality diagnosis device|
    DE102006031730A1|2006-07-08|2008-01-17|Conti Temic Microelectronic Gmbh|Method for error diagnosis and error correction of sensor of safety critical system of vehicle, involves testing sensor in specific operating mode for error diagnosis, in which part of sensor specification is tested|
    US8868315B2|2010-12-02|2014-10-21|Toyota Motor Engineering & Manufacturing North America, Inc.|Systems and methods for estimating a temperature calibration|
    DE102011002911A1|2011-01-20|2012-07-26|Robert Bosch Gmbh|Method for holding a vehicle in a traffic lane|GB2532774A|2014-11-28|2016-06-01|Ford Global Tech Llc|A method of scheduling a diagnostic event|
    SE542095C2|2017-04-20|2020-02-25|Scania Cv Ab|Method and system for diagnosing a vehicle|
    DE102019106770A1|2019-03-18|2020-09-24|Bayerische Motoren Werke Aktiengesellschaft|Method and system for on-board diagnosis in a vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251111A|SE536717C2|2012-10-03|2012-10-03|Device and method for diagnosing vehicle functions|SE1251111A| SE536717C2|2012-10-03|2012-10-03|Device and method for diagnosing vehicle functions|
    PCT/SE2013/051157| WO2014055023A1|2012-10-03|2013-10-03|Device and method for diagnose of vehicle functions|
    DE112013004477.3T| DE112013004477T5|2012-10-03|2013-10-03|Device and method for diagnosing vehicle functions|
    [返回顶部]