• 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:
    The present invention relates to a method for diagnosing operation of a cooler arrangement of a cooling system of a vehicle. The cooling system comprises an air inlet for said cooler arrangement, and a fan arrangement for providing additional circulation of air for the cooler arrangement. The method comprises the step of determining (S1) possible jamming of the cooler arrangement. The step of determining jamming of the cooler arrangement comprises the step of determining (S1 a) the required energy for operating the fan of the fan arrangement, jamming being determined if the required energy for operating the fan exceeds a certain level.The present invention also relates to a system for diagnosing operation of a cooler arrangement of a cooling system of a vehicle. The present invention also relates to a vehicle. The present invention also relates to a computer program and a computer program product.(Fig. 4)
    公开号:SE1550807A1
    申请号:SE1550807
    申请日:2015-06-15
    公开日:2016-12-16
    发明作者:Claesson André
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    METHOD AND SYSTEM FOR DIAGNOSING OPERATION OF A COOLERARRANGEMENT OF A COOLING SYSTEM OF A VEHICLE TECHNICAL FIELD The invention relates to a method for diagnosing operation of a coolerarrangement of a cooling system of a vehicle according to the preamble ofclaim 1. The invention also relates to a system for diagnosing operation of acooler arrangement of a cooling system of a vehicle. The invention alsorelates to a vehicle. The invention in addition relates to a computer program and a computer program product.
    BACKGROUND ART Vehicles are equipped with a cooling system having a cooler arrangementand an air inlet for introducing air for the cooler arrangement. The coolingsystem may further comprise a fan arrangement for providing additionalcirculation of air for the cooler arrangement when needed. Such a fan arrangement is common in heavy vehicles such as trucks and buses.
    When driving in e.g. snowy conditions there is a risk that the coolerarrangement of the vehicle gets partly or entirely jammed. A jammed coolerarrangement reduces the cooling performance. A problem is that the driver does not know the reason for the reduced cooling performance.
    WO2009151379 discloses a system for diagnosing icing of a cooler of avehicle. A sensor is adapted to detect possible ice formation in the coolerwherein a valve means is placed in an open position for allowing exhaust gases from the combustion engine to flow for warming.
    OBJECTS OF THE INVENTION An object of the present invention is to provide a method for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle which efficiently determines jamming of the cooler arrangement.
    Another object of the present invention is to provide a system for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle which efficiently determines jamming of the cooler arrangement.
    SUMMARY OF THE INVENTION These and other objects, apparent from the following description, areachieved by a method, a system, a vehicle, a computer program and acomputer program product, as set out in the appended independent claims.Preferred embodiments of the method and the system are defined in appended dependent claims.
    Specifically an object of the invention is achieved by a method for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle. Thecooling system comprises an air inlet for said cooler arrangement, and a fanarrangement for providing additional circulation of air for the coolerarrangement. The method comprises the step of determining possiblejamming of the cooler arrangement. The step of determining jamming of thecooler arrangement comprises the step of determining the required energyfor operating the fan of the fan arrangement, jamming being determined if therequired energy for operating the fan exceeds a certain level. Hereby anefficient way of determining jamming of the cooler arrangement is obtained.By thus determining jamming the information regarding the required energyfor operating the fan exceeding a certain level may easily be used for taking measures automatically in order to heat and/or clean the cooler arrangement.
    According to an embodiment of the method said fan arrangement iselectrically operated, said required energy being electrical energy. Anelectrically operated fan may easily be reversed for providing heat and/or c|eaning for the coo|er arrangement.
    According to an embodiment the method comprises the step of, if jamminghas been determined, reversing the fan so as to provide heat to the coo|erarrangement. Hereby efficient removal of ice and/or snow jamming the coo|erarrangement is obtained. The reversing of the fan is advantageousiy effected automatically.
    According to an embodiment the method comprises the step of, if jamminghas been determined, reversing the fan so as to provide c|eaning air flow tothe coo|er arrangement. Hereby efficient removal of stuff such as ice/snowand/or dirt jamming the coo|er arrangement is obtained. The reversing of the fan is advantageousiy effected automatically.
    According to an embodiment of the method the step of determining jammingof the coo|er arrangement further comprises the step of determining thespeed of the vehicle. By thus taking the speed of the vehicle intoconsideration the determination of the jamming is further improved in that theenergy required for operating the fan is depending on the vehicle speed.
    According to an embodiment of the method the step of determining jammingof the coo|er arrangement further comprises the step of determining thesurrounding temperature. By thus taking the surrounding temperature intoconsideration the determination of the jamming is further improved in that theenergy required for operating the fan is depending on the surroundingtemperature.
    According to an embodiment of the method the step of determining jammingof the coo|er arrangement further comprises the step of determining thehumidity in that the energy required for operating the fan is depending on thehumidity.
    According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of determining thetemperature of the engine compartment. By thus taking the temperature ofthe engine compartment into consideration the determination of the jammingis further improved in that an abnormal temperature rise in the engine compartment may indicate jamming.
    According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of detecting partic|es inthe environment of the vehicle. By thus taking partic|es in the environment ofthe vehicle into consideration the determination of the jamming is further improved.
    Specifically an object of the invention is achieved by a system for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle. Thecooling system comprises an air inlet for the cooler arrangement, and a fanarrangement for providing additional circulation of air for the coolerarrangement. The system comprises means for determining possiblejamming of the cooler arrangement. The means for determining jamming ofthe cooler arrangement comprises means for determining the requiredenergy for operating the fan of the fan arrangement, jamming being arrangedto be determined if the required energy for operating the fan exceeds a certain level.
    According to an embodiment of the system said fan arrangement is arranged to be electrically operated, said required energy being electrical energy.
    According to an embodiment the system comprises means for reversing thefan so as to provide heat to the cooler arrangement if jamming has been determined.
    According to an embodiment the system comprises means for reversing thefan so as to provide cleaning air flow to the cooler arrangement if jamming has been determined.
    According to an embodiment of the system the means for determiningjamming of the cooler arrangement further comprises means for determining the speed of the vehicle.
    According to an embodiment of the system the means for determiningjamming of the cooler arrangement further comprises means for determining the surrounding temperature.
    According to an embodiment of the system the means for determiningjamming of the cooler arrangement further comprises means for determining the humidity.
    According to an embodiment of the system the means for determiningjamming of the cooler arrangement further comprises means for determining the temperature of the engine compartment.The system is adapted to perform the methods as set out herein.
    The system according to the invention has the advantages according to thecorresponding method.
    BRIEF DESCRIPTION OF THE DRAWINGS A better understanding of the present invention will be had upon thereference to the following detailed description when read in conjunction withthe accompanying drawings, wherein like reference characters refer to likeparts throughout the several views, and in which: Fig. 1 schematically illustrates a side view of a vehicle according to the present invention; Fig. 2 schematically illustrates a cooling system of a vehicle according to an embodiment of the present invention; Fig. 3 schematically illustrates a system for diagnosing operation of a coolerarrangement of a cooling system of a vehicle according to an embodiment of the present invention; Fig. 4 schematically illustrates a block diagram of a method for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle according to an embodiment of the present invention; and Fig. 5 schematically illustrates a computer according to an embodiment of the present invention.
    DETAILED DESCRIPTION Hereinafter the term “link” refers to a communication link which may be aphysical connector, such as an optoelectronic communication wire, or a non-physical connector such as a wireless connection, for example a radio or microwave link.
    Fig. 1 schematically illustrates a side view of a vehicle 1 according to thepresent invention. The exemplified vehicle 1 is a heavy vehicle in the shapeof a truck. The vehicle according to the present invention could be anysuitable vehicle such as a bus or a car. The vehicle comprises a system I ordiagnosing operation of a cooler arrangement of a cooling system of the vehicle 1.
    Fig. 2 schematically illustrates a cooling system 10 of a vehicle 1 accordingto an embodiment of the present invention. The cooling system 10 isintended for cooling of an internal combustion engine 12 by circulating acoolant. The cooling system 10 comprises a cooling circuit C in which thecoolant is arranged to be circulated. The cooling circuit C is connected to the internal combustion engine 12.
    The cooling system 10 comprises a pump unit 14 for circulating the coolant.The pump unit 14 is arranged to pump the coolant through the engine 12 viaa first coolant line L1 and further from the engine 12 through a secondcoolant line L2 through a thermostat 16. The thermostat 16 is arranged todirect a variable amount of coolant to a line L3 and a bypass line L5depending on the temperature of the coolant.
    The cooling system 10 comprises a cooler arrangement 20. The coolerarrangement 20 comprises a radiator 22 for cooling the coolant. The coolerarrangement 20 is configured to be arranged in a peripheral region of thevehicle so as to receive surrounding air A during drive. The coolerarrangement 20 is according to an embodiment arranged in the front of thevehicle. The cooler arrangement 20 could be arranged in connection to thesides of the vehicle 1. The cooler arrangement 20 could be arranged in connection to the roof of vehicle 1.
    Depending on the temperature of the coolant, the coolant is arranged to becirculated via the line L3 through the radiator 22 and back to the pump unit14 via a coolant line L4 and/or via the bypass line L5 to the pump unit 14 bypassing the radiator.
    The cooling system 10 comprises an air inlet 24 for the cooler arrangement20. The air inlet 24 is according to an embodiment comprised in the coolerarrangement 20. The air inlet 24 may have any suitable shape for introducingair A through to the radiator 22.
    The cooling system 10 comprises a fan arrangement 30 for providingadditional circulation of air for the cooler arrangement 20. The fanarrangement 30 is arranged to generate a flow of surrounding air through thecooler arrangement 20 and hence the radiator 22. The fan arrangement 30comprises a fan 32.
    The fan arrangement 30 is according to an embodiment arranged to provideadditional circulation when there is an additional need of cooling.
    The fan arrangement 30 requires energy to be operated. The fanarrangement is according to an embodiment arranged to be electricallyoperated. The fan arrangement 30 is thus according to an embodiment anelectric fan arrangement. The required energy for operating the fan 32 of thefan arrangement 30 is hereby electrical energy. The fan arrangement 20comprises an electric motor for operating the fan 32 such as a DC motor,asynchronous motor, synchronous motor etc. The electric motor of the fanarrangement 32 operating the fan 32 is according to an embodiment drivenby a pulse-width-modulation (PWM) signal which facilitates control of therotational speed and rotational direction of the fan 32 of the fan arrangement30. lf the cooler arrangement 20 is jammed to some extent the resistance for theflow of air from the fan arrangement 30 through the cooler arrangement 20 isincreased. The energy, here electrical energy, required for operating the fanarrangement 30 so as to provide the flow of air through the coolerarrangement 20 hereby increases due to the jamming of the coolerarrangement. The jamming may be due to snow, ice, dirt or the like.
    The fan arrangement 30 is operably connected to a means 112 fordetermining the required energy for operating the fan 32 of the fanarrangement 30.
    The means 112 for determining the required energy for operating the fan isarranged to determine whether the required energy for operating the fan 30exceeds a certain level. lf the required energy for operating the fan 30exceeds the certain level jamming of the cooler arrangement 20 is determined.
    By thus determining jamming of the cooler arrangement 20 diagnosing of thecooler arrangement 20 is facilitated.
    The fan arrangement 30 is operably connected to a means 120 for reversingthe fan 32 of the fan arrangement 30 so as to reduce the jamming.
    The means 120 for reversing the fan 32 is arranged to reverse the fan so asto provide heat to the cooler arrangement if jamming has been determined.The heat is provided by means of hot air from the engine compartment of theengine 12. The means 120 for reversing the fan 32 is arranged to reverse thefan so as to provide cleaning air flow to the cooler arrangement if jamminghas been determined. The cleaning air flow is provided by means of the hotair from the engine compartment. The means 120 for reversing the fancomprises a motor. The motor could be any suitable motor such as anysuitable electric motor comprising DC motor, asynchronous motor,synchronous motor etc. The means 120 for reversing the fan 32 comprisescontrol means which could be any suitable control unit for controlling the fan32 comprising reversing the fan 32. The means for reversing the fan 32 isaccording to an embodiment comprised in an electronic control unit such asthe electronic control unit 100 described with reference to fig. 3. The controlincluding the reversing of the fan 32 is obtained by any suitable signal suchas a pulse-width-modulation (PWM) signal which facilitates control of therotational speed and rotational direction of the fan 32 of the fan arrangement 30.
    During normal operation of the fan arrangement 30 the fan 32 rotates suchthat the surrounding air is sucked into the engine compartment of the engine12. When the fan 32 of the fan arrangement 30 is reversed, the hot air fromthe engine compartment is sucked from the engine compartment of theengine 12 and is pressed forward towards the cooler arrangement. By highvehicle speed, the rotational speed of the fan 32 needs to be higher relativeto low vehicle speed.
    The means 120 for reversing the fan is according to an embodimentarranged to reverse the fan 32 continuously, i.e. so as to provide acontinuous flow of hot air from the engine compartment for heating andcleaning of the cooler arrangement 20 so as to reduce/remove the jamming of the cooler arrangement 20.
    The means 120 for reversing the fan is according to an embodimentarranged to reverse the fan 32 intermittently, i.e. so as to provide anintermittent flow of hot air from the engine compartment for heating andcleaning of the cooler arrangement 20 so as to reduce/remove the jamming of the cooler arrangement 20.
    By thus reversing the fan 32 of the fan arrangement 30 automatic cleaning ofthe cooler arrangement 20 is faciiitated.
    The means 112 and means 120 are according to an embodiment comprisedin a system for diagnosing operation of the cooler arrangement 20 of the cooling system 10 of the vehicle 1.An embodiment of such a system is described with reference to fig. 3.
    Fig. 3 schematically illustrates a system I for diagnosing operation of a coolerarrangement of a cooling system of a vehicle according to an embodiment ofthe present invention. The cooling system comprising an air inlet for saidcooler, and a fan arrangement for providing additional circulation of air for thecooler arrangement. The cooling system is according to an embodiment acooling system in accordance with the cooling system 10 described with reference to fig. 2.The system I comprises an electronic control unit 100.
    The system I comprises means 110 for determining possible jamming of the cooler arrangement.
    The means 110 for determining jamming of the cooler arrangementcomprises means 112 for determining the required energy for operating thefan of the fan arrangement.
    The means 112 for determining the required energy for operating the fan ofthe fan arrangement comprises means 112a for determining whether therequired energy for operating the fan exceeds a certain level. Jamming is 11 arranged to be determined if the required energy for operating the fanexceeds the certain level. This indicates that required energy for operatingthe fan so as to provide the flow of air through the cooler arrangement hasincreased to such a level due to the jamming of the cooler arrangement. The jamming may be due to snow, ice, dirt or the like.
    The fan arrangement is arranged to be electrically operated. The requiredenergy is thus electrical energy. The fan arrangement is thus an electrical fanarrangement having an electrically operated fan.
    The means 110 for determining jamming of the cooler arrangement furthercomprises means 113 for determining the speed of the vehicle. The means113 for determining the speed of the vehicle comprises any suitable meansfor determining the speed of the vehicle. The means 113 for determining thespeed of the vehicle comprises according to an embodiment thespeedometer of the vehicle. A certain speed of the vehicle results in a certainair flow towards the cooler arrangement of the vehicle resulting in a certainexpected cooling capacity, given a certain surrounding temperature andhumidity. lf this expected cooling capacity is not obtained within a certain margin jamming of the cooler arrangement may be the reason.
    The means 110 for determining jamming of the cooler arrangement furthercomprises means 114 for determining the surrounding temperature. Themeans 114 for determining the surrounding temperature comprises anysuitable means for determining the surrounding temperature. The means 114for determining the surrounding temperature comprises one or moretemperature sensor units for sensing the surrounding temperature. Themeans 114 for determining the surrounding temperature comprises accordingto an embodiment a vehicle-to-vehicle and/or vehicle-to-external unitcommunication means for receiving information about the surroundingtemperature from other vehicles and/or external units having informationabout the surrounding temperature. A certain surrounding temperature results in a certain expected cooling capacity for the cooler arrangement, 12 given a certain vehicle speed and humidity. lf this expected cooling capacityis not obtained within a certain margin jamming of the cooler arrangement may be the reason.
    The means 110 for determining jamming of the cooler arrangement furthercomprises means 115 for determining the humidity. The means 115 fordetermining the humidity comprises any suitable means for determining thehumidity. The means 115 for determining the humidity comprises one ormore humidity sensor units for sensing the humidity. The means 115 fordetermining the humidity comprises according to an embodiment a vehicle-to-vehicle and/or vehicle-to-external unit communication means for receivinginformation about the humidity from other vehicles and/or external unitshaving information about the humidity. A certain humidity results in a certainexpected cooling capacity for the cooler arrangement, given a certain vehiclespeed and surrounding temperature. lf this expected cooling capacity is notobtained within a certain margin jamming of the cooler arrangement may be the reason.
    The means 110 for determining jamming of the cooler arrangement furthercomprises means 116 for determining the temperature of the enginecompartment. The means 116 for determining the temperature of the enginecompartment may comprise any suitable means 116 for determining thetemperature of the engine compartment. The means 116 for determining thetemperature of the engine compartment comprises one or more temperaturesensor units for sensing the temperature of the engine compartment. Anabnormal increase in temperature of the engine compartment may indicatejamming of the cooler arrangement, this given the vehicle speed, surrounding temperature and humidity.
    The means 110 for determining jamming of the cooler arrangement furthercomprises means 117 for detecting particles in the environment of thevehicle. The means 117 for detecting particles in the environment of the vehicle may comprise any suitable means 117 for detecting particles in the 13 environment of the vehicle constituting a risk of jamming the coolerarrangement of the vehicle. The means 117 for detecting particles in theenvironment of the vehicle comprises one or more detector units for detectingparticles in the environment of the vehicle. The at least one detector unit maycomprise one or more filter arrangements for collecting and detecting suchparticles. The at least one detector unit may comprise one or more cameraunits for detecting such particles.
    The system I comprises means 120 for reversing the fan. The means 120 forreversing the fan may comprise any suitable means for reversing the fan soas to change the direction of rotation of the fan. The means 120 for reversingthe fan comprises a switch member. The means 120 for reversing the fan isarranged to reverse the fan ifjamming has been determined. The means 120for reversing the fan is arranged to reverse the fan automatically if jamming has been determined.
    The means 120 for reversing the fan of the fan arrangement comprisesmeans 122 for reversing the fan so as to provide heat to the coolerarrangement if jamming has been determined. The heat is according to anembodiment provided by means of hot air from the engine compartment ofthe engine.
    The means 120 for reversing the fan of the fan arrangement comprisesmeans 124 for reversing the fan so as to provide cleaning air flow to thecooler arrangement ifjamming has been determined. The cleaning air flow isaccording to an embodiment provided by means of the hot air from the engine compartment.
    The means 120 for reversing the fan comprises a motor. The motor isconfigured to operate the fan. The motor could be any suitable motor such asany suitable electric motor comprising DC motor, asynchronous motor,synchronous motor etc. The means 120 for reversing the fan comprisescontrol means which could be any suitable control unit for controlling the fan comprising reversing the fan. The means for reversing the fan is according to 14 an embodiment comprised in an electronic control unit such as the electroniccontrol unit 100. The control including the reversing of the fan is obtained byany suitable signal such as a pulse-width-modulation (PWM) signal whichfacilitates control of the rotational speed and rotational direction of the fan of the fan arrangement.
    The means 120 for reversing the fan is according to an embodimentarranged to reverse the fan continuously, i.e. so as to provide a continuousflow of hot air from the engine compartment for heating and cleaning of thecooler arrangement so as to reduce/remove the jamming of the coolerarrangement. Reversing the fan for providing a continuous flow of hot airfrom the engine compartment, i.e. having a continuous rotation of the fan, issuitable when ice and/or packed snow has jammed the cooler arrangementin that efficient heating and thus efficient melting of the ice/snow is obtained.
    The means 120 for reversing the fan is according to an embodimentarranged to reverse the fan intermittently, i.e. so as to provide an intermittentflow of hot air from the engine compartment for heating and cleaning of thecooler arrangement so as to reduce/remove the jamming of the coolerarrangement. Reversing the fan for providing an intermittent flow of hot airfrom the engine compartment, i.e. having an intermittent rotation of the fan, issuitable when dust, sand, grovel, snow or the like has jammed the coolerarrangement in that efficient pulsation for removing dust, sand, grovel, snow or the like is obtained.
    The electronic control unit 100 is operably connected to the means 110 fordetermining jamming of the cooler arrangement via a link 110a. Theelectronic control unit 100 is via the link 110a arranged to receive a signalfrom said means 110 representing data for determined jamming of the cooler arrangement.
    The electronic control unit 100 is operably connected to the means 112 fordetermining the required energy for operating the fan of the fan arrangement via a link 112:1. The electronic control unit 100 is via the link 112:1 arrangedto receive a signal from said means 112 representing energy data forrequired energy for operating the fan.
    The electronic control unit 100 is operably connected to the means 112a fordetermining whether the required energy for operating the fan exceeds acertain level via a link 112a1. The electronic control unit 100 is via the link112a1 arranged to receive a signal from said means 112a representing datafor level of required energy for operating the fan.
    The electronic control unit 100 is operably connected to the means 113 fordetermining the speed of the vehicle via a link 113a. The electronic controlunit 100 is via the link 113a arranged to receive a signal from said means 113 representing speed data for current vehicle speed.
    The electronic control unit 100 is operably connected to the means 114 fordetermining the surrounding temperature via a link 114a. The electroniccontrol unit 100 is via the link 114a arranged to receive a signal from said means 114 representing temperature data for surrounding temperature.
    The electronic control unit 100 is operably connected to the means 115 fordetermining the humidity via a link 115a. The electronic control unit 100 is viathe link 115a arranged to receive a signal from said means 115 representinghumidity data for current humidity.
    The electronic control unit 100 is operably connected to the means 116 fordetermining the temperature of the engine compartment via a link 116a. Theelectronic control unit 100 is via the link 116a arranged to receive a signalfrom said means 116 representing temperature data for temperature of the engine compartment.
    The electronic control unit 100 is operably connected to the means 117 fordetecting particles in the environment of the vehicle via a link 117a. The electronic control unit 100 is via the link 117a arranged to receive a signal 16 from said means 117 representing data for detected particles in the environment of the vehicle.
    The electronic control unit 100 is arranged to process the data energy datafor required energy for operating the fan for determining possible jamming ofthe cooler arrangement and the data for level of required energy for operatingthe fan, jamming being determined if the energy required exceeds a certainlevel. The electronic control unit is further arranged to process the speeddata for current vehicle speed, temperature data for surroundingtemperature, humidity data for current humidity, temperature data fortemperature of the engine compartment, and/or data for detected particles inthe environment of the vehicle so as to determine possible jamming of thecooler arrangement. lfjamming of the cooler arrangement is determined theelectronic control unit 100 is arranged to send information about the jamming to the means 120.
    The electronic control unit 100 is operably connected to the means 120 forreversing the fan via a link 120a. The electronic control unit 100 is via the link120a arranged to send a signal to said means 120 representing data forreversing the fan based on determined jamming of the cooler arrangement.The data may comprise data for continuously reversing the fan for continuousflow of hot air. The data may comprise data for intermittently reversing thefan for intermittent flow of hot air.
    The electronic control unit 100 is operably connected to the means 122 forreversing the fan so as to provide heat to the cooler arrangement if jamminghas been determined via a link 122a. The electronic control unit 100 is via thelink 122a arranged to send a signal to said means 122 representing data for reversing the fan so as to provide heat to the cooler arrangement.
    The electronic control unit 100 is operably connected to the means 124 forreversing the fan so as to provide cleaning air flow to the cooler arrangement if jamming has been determined via a link 124a. The electronic control unit 17 100 is via the link 124a arranged to send a signal to said means 124representing data for reversing the fan so as to provide cleaning air flow to the cooler arrangement.
    The electronic control unit 100 is operably connected to the means 120 forreversing the fan via a link 120b. The electronic control unit 100 is via the link120b arranged to receive a signal from said means 120 representing data forstatus of the direction of rotation of the fan of the fan arrangement.
    Above with reference to fig. 2 and fig. 3 fan of the fan arrangement has beenan electrically operated fan, wherein the required energy for operating theelectrical fan of the fan arrangement has been determined, wherein jammingis determined if the required energy for operating the electrical fan exceeds acertain level. The fan arrangement could be any suitable fan arrangementoperated in any suitable way, where the energy for operating the fanarrangement/the fan of the fan arrangement is determinable. The fanarrangement is according to an alternative embodiment a hydraulic fanarrangement with a hydraulically operated fan. The fan arrangement isaccording to an embodiment a fan arrangement operated by the engine,wherein the required energy for the engine to operate the fan of the fanarrangement is determined with any suitable detection means, whereinjamming is determined if the required energy for operating the fan exceeds acertain level. According to an embodiment an air pressure driven fan motor could be used for operating the fan.
    Fig. 4 schematically illustrates a block diagram of a method for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle accordingto an embodiment of the present invention. The cooling system comprises anair inlet for said cooler arrangement, and a fan arrangement for providing additional circulation of air for the cooler arrangement. 18 According to the embodiment the method for diagnosing operation of a coolerarrangement of a cooling system of a vehicle a step S1. ln this step possible jamming of the cooler arrangement is determined.
    According to the embodiment the step S1a of determining jamming of thecooler arrangement comprises the step of determining the required energyfor operating the fan, jamming being determined if the required energy foroperating the fan of the fan arrangement exceeds a certain According to an embodiment of the method said fan arrangement is e|ectrica|y operated, said required energy being e|ectrica| energy.
    According to an embodiment the method comprises the step of, if jamminghas been determined, reversing the fan so as to provide heat to the cooler arrangement.
    According to an embodiment the method comprises the step of, if jamminghas been determined, reversing the fan so as to provide c|eaning air flow to the cooler arrangement.
    According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of determining the speed of the vehicle.
    According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of determining the surrounding temperature.
    According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of determining thehumidity.
    According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of determining the temperature of the engine compartment. 19 According to an embodiment of the method the step of determining jammingof the cooler arrangement further comprises the step of detecting particles in the environment of the vehicle.
    With reference to figure 4, a diagram of an apparatus 500 is shown. Thecontrol unit 100 described with reference to fig. 2 may according to anembodiment comprise apparatus 500. Apparatus 500 comprises a non-volatile memory 520, a data processing device 510 and a read/write memory550. Non-volatile memory 520 has a first memory portion 530 wherein acomputer program, such as an operating system, is stored for contro|ing thefunction of apparatus 500. Further, apparatus 500 comprises a bus controller,a seria| communication port, I/O-means, an A/D-converter, a time date entryand transmission unit, an event counter and an interrupt controller (not shown). Non-volatile memory 520 also has a second memory portion 540.
    A computer program P is provided comprising routines for diagnosingoperation of a cooler arrangement of a cooling system of a vehicle accordingto an embodiment of the present invention. The cooling system comprises anair inlet for said cooler arrangement, and a fan arrangement for providingadditional circulation of air for the cooler arrangement. The program Pcomprises routines for determining possible jamming of the coolerarrangement. The routines for determining possible jamming of the coolerarrangement comprises routines for determining the required energy foroperating the fan of the fan arrangement, jamming being determined if therequired energy for operating the fan exceeds a certain level. The program Pcomprises routines for, ifjamming has been determined, reversing the fan soas to provide heat to the cooler arrangement. The program P comprisesroutines for, if jamming has been determined, reversing the fan so as toprovide cleaning air flow to the cooler arrangement. The computer program Pmay be stored in an executable manner or in a compressed condition in a separate memory 560 and/or in read/write memory 550.
    When it is stated that data processing device 510 performs a certain functionit should be understood that data processing device 510 performs a certainpart of the program which is stored in separate memory 560, or a certain partof the program which is stored in read/write memory 550.
    Data processing device 510 may communicate with a data communicationsport 599 by means of a data bus 515. Non-volatile memory 520 is adaptedfor communication with data processing device 510 via a data bus 512.Separate memory 560 is adapted for communication with data processingdevice 510 via a data bus 511. Read/write memory 550 is adapted forcommunication with data processing device 510 via a data bus 514. To thedata communications port 599 e.g. the links connected to the control units100 may be connected.
    When data is received on data port 599 it is temporarily stored in secondmemory portion 540. When the received input data has been temporarilystored, data processing device 510 is set up to perform execution of code ina manner described above. The signals received on data port 599 can beused by apparatus 500 for determining possible jamming of the coolerarrangement. The signals used for determining possible jamming of thecooler arrangement can be used for determining the required energy foroperating the fan of the fan arrangement, jamming being determined if therequired energy for operating the fan exceeds a certain level. The signalsreceived on data port 599 can be used by apparatus 500 for, ifjamming hasbeen determined, reversing the fan so as to provide heat to the coolerarrangement. The signals received on data port 599 can be used byapparatus 500 for, if jamming has been determined, reversing the fan so as to provide cleaning air flow to the cooler arrangement.
    Parts of the methods described herein can be performed by apparatus 500by means of data processing device 510 running the program stored inseparate memory 560 or read/write memory 550. When apparatus 500 runs the program, parts of the methods described herein are executed. 21 The foregoing description of the preferred embodiments of the presentinvention has been provided for the purposes of illustration and description. ltis not intended to be exhaustive or to limit the invention to the precise formsdisclosed. Obviously, many modifications and variations will be apparent topractitioners skilled in the art. The embodiments were chosen and describedin order to best explain the principles of the invention and its practicalapplications, thereby enabling others skilled in the art to understand theinvention for various embodiments and with the various modifications as are suited to the particular use contemplated.
    权利要求:
    Claims (21)
    [1] 1. A method for diagnosing operation of a cooler arrangement (20) of acooling system (10) of a vehicle (1), said cooling system comprising an airinlet (24) for said cooler arrangement (20), and a fan arrangement (30) forproviding additional circulation of air for the cooler arrangement (20), themethod comprising the step of determining possible jamming of the coolerarrangement (20), characterized in that the step of determining (S1)jamming of the cooler arrangement (20) comprises the step of: - determining (S1a) the required energy for operating the fan (32) of thefan arrangement (30), jamming being determined if the required energy foroperating the fan (32) exceeds a certain level.
    [2] 2. A method according to claim 1, wherein said fan arrangement (30) iselectrically operated, said required energy being electrical energy.
    [3] 3. A method according to claim 1 or 2, comprising the step of, if jamminghas been determined, reversing the fan (32) so as to provide heat to thecooler arrangement (20).
    [4] 4. A method according to any preceding claims, comprising the step of, ifjamming has been determined, reversing the fan (32) so as to providecleaning air flow to the cooler arrangement (20).
    [5] 5. A method according to any preceding claims, wherein the step ofdetermining jamming of the cooler arrangement (20) further comprises thestep of determining the speed of the vehicle (1 ).
    [6] 6. A method according to any preceding claims, wherein the step ofdetermining jamming of the cooler arrangement (20) further comprises the step of determining the surrounding temperature.
    [7] 7. A method according to any preceding claims, wherein the step ofdetermining jamming of the cooler arrangement (20) further comprises thestep of determining the humidity. 23
    [8] 8. A method according to any preceding claims, wherein the step ofdetermining jamming of the cooler arrangement (20) further comprises thestep of determining the temperature of the engine compartment.
    [9] 9. A method according to any preceding claims, wherein the step ofdetermining jamming of the cooler arrangement (20) further comprises thestep of detecting particles in the environment of the vehicle (1).
    [10] 10. A system (I) for diagnosing operation of a cooler arrangement (20) of acooling system of a vehicle (1), said cooling system (10) comprising an airin|et (24) for said cooler arrangement (20), and a fan arrangement (30) forproviding additional circulation of air for the cooler arrangement (20), whereinthe system (I) comprises means (110) for determining possible jamming ofthe cooler arrangement (20), characterized in that the means (110) fordetermining jamming of the cooler arrangement (20) comprises means (112)for determining the required energy for operating the fan (32) of the fanarrangement (30), jamming being arranged to be determined if the requiredenergy for operating the fan exceeds a certain level.
    [11] 11.A system according to claim 10, wherein said fan arrangement (30) isarranged to be electrically operated, said required energy being electrical energy.
    [12] 12. A system according to claim 10 or 11, comprising means (120, 122) forreversing the fan so as to provide heat to the cooler arrangement (20) if jamming has been determined.
    [13] 13. A system according to any of claims 10-12, comprising means (120, 124)for reversing the fan so as to provide cleaning air flow to the coolerarrangement (20) ifjamming has been determined.
    [14] 14. A system according to any of claim 10-13, wherein the means (110) fordetermining jamming of the cooler arrangement (20) further comprisesmeans (113) for determining the speed of the vehicle (1). 24
    [15] 15. A system according to any of claims 10-14, wherein the means (110) fordetermining jamming of the cooler arrangement (20) further comprises means (114) for determining the surrounding temperature.
    [16] 16. A system according to any of ciaims 10-15, wherein the means (110) fordetermining jamming of the cooler arrangement (20) further comprisesmeans (115) for determining the humidity.
    [17] 17. A system according to any of claims 10-16, wherein the means (110) fordetermining jamming of the cooler arrangement (20) further comprisesmeans (116) for determining the temperature of the engine compartment.
    [18] 18. A system according to any of claims 10-17, wherein the means (110) fordetermining jamming of the cooler arrangement (20) further comprisesmeans (117) for detecting particles in the environment of the vehicle (1 ).
    [19] 19. A vehicle (1) comprising a system (I) according to any of ciaims 10-18.
    [20] 20.A computer program (P) for diagnosing operation of a coolerarrangement of a cooling system of a vehicle, said computer program (P)comprising program code which, when run on an electronic control unit (100)or another computer (500) connected to the electronic control unit (100), causes the electronic control unit to perform the steps according to claim 1-9.
    [21] 21. A computer program product comprising a digital storage medium storing the computer program according to claim 20.
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    同族专利:
    公开号 | 公开日
    BR102016010277A2|2016-12-27|
    DE102016006542A1|2016-12-15|
    SE540225C2|2018-05-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SE532361C2|2008-06-13|2009-12-22|Zoltan Kardos|Cooling arrangement of a supercharged internal combustion engine|
    法律状态:
    2021-10-05| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1550807A|SE540225C2|2015-06-15|2015-06-15|Method and system for diagnosing operation of a cooler arrangement of a cooling system of a vehicle|SE1550807A| SE540225C2|2015-06-15|2015-06-15|Method and system for diagnosing operation of a cooler arrangement of a cooling system of a vehicle|
    BR102016010277A| BR102016010277A2|2015-06-15|2016-05-06|Method and system for diagnosing operation of a refrigerator arrangement of a vehicle cooling system|
    DE102016006542.7A| DE102016006542A1|2015-06-15|2016-05-27|Method and system for diagnosing the operation of a radiator arrangement of a cooling system of a vehicle|
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