• 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 concerns a drive system and a method of driving a vehicle (1). The drive system comprises 1 a combustion engine (2), a gear box (3), an electric machine (9), and a planetary gear. The drive system comprises a control unit (18) which is adapted to have access to information concerning the moment (Tel) of the electric machine (9) for driving the vehicle (1) and to calculate the moment (T1c) of the combustion engine (2) for driving the vehicle (1) at at least a first operation occasion (Di) when there is a known relation between the moment (Tel) of the electric machine and the moment (T1c) of the combustion engine.
    公开号:SE1250718A1
    申请号:SE1250718
    申请日:2012-06-27
    公开日:2013-12-28
    发明作者:Niklas Pettersson；Mikael Bergquist；Karl Redbrandt；Mathias Bjoerkman；Johan Lindstroem
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    58501SEApplicant: Scania CV AB, ref: 104-12, (Estimation of torque reporting errors with freeplanet)Drive system and procedure for driving a vehicleBACKGROUND OF THE INVENTION AND KNOWLEDGE TECHNOLOGYThe present invention relates to a drive system according to the preamble of claim 1 and a method for driving a vehicle according to the preamble of claim 11.
    Utilizing a conventional clutch mechanism that disengages the input shaft of the gearbox from the internal combustion engine during shifting processes in the gearbox entailed sufficient parts. When a stationary vehicle starts, the slats of the sliding clutch mechanism start against each other. Thus, all the lamellae are wound up. This heating results in increased fuel consumption and wear of the clutch lugs. A conventionalcoupling mechanism is also relatively heavy and expensive. It also occupies a relatively large space in the vehicle. Even using a hydraulic torque converter also results in feed losses.
    Hybrid vehicles can be driven by a primal engine which can be an internal combustion engine anda secondary motor that can be an electric machine. The electrical machine is equipped with at least one energy storage for storage of electrical energy and control equipment to aft regulate the flow of electrical energy between the energy storage and the electrical machine. The electric machine can thus alternately work as a motor and generator depending on the vehicle's thift condition. DA the vehicle is brakedthe electrical machine generates electrical energy stored in the energy store. Thestored electrical energy is later used, for example, for operation of the vehicle and operation of various auxiliary systems in the vehicle.
    The unpublished Swedish patent application SE 1051384-4 shows onehybrid drive system tried a planetary gear which comprises three components namely onesun gear, a planet gear holder and a ring gear. One of the three components of the planetary gear is2connected to an output shaft of the internal combustion engine, a second grain component of the planetary shaft is connected to an input shaft! to the gearbox and a third component of the planetary gear is connected to a rotor of an electric machine. The electrical machine is connected to an energy storage so that it can work alternatelyas engine and generator. The speed of electrical machines can be regulated steplessly.
    By regulating the speed of the electric machine, the input shaft to the gearbox can be given a desired speed. With a hybrid system according to SE 1051384-4, no coupling mechanism needs to be used in the vehicle'sThe torque of the internal combustion engine ° eh the torque of the electric machine together provide the driving torque of the vehicle. However, the internal combustion engine is often used for the operation of various units in the vehicle. There is also an uncertainty regarding the design of the internal combustion engine components, wear, aging, etc. The quality of the fuel, the temperature of the fuel and the temperature of the internal combustion engine are otherfactors that make it difficult to determine the torque that the internal combustion engine adds to the operation and armed torque of the vehicle. However, it is important that the internal combustion engine provides a requested torque with good accuracy in certain operating conditions such as, for example, when shifting and when the planetary gear is engaged.
    SUMMARY OF THE INVENTIONThe object of the present invention is to provide a drive system for a vehicle of an initially named type in which the torque of the internal combustion engine for operation of the vehicle can be determined with good precision.
    This object is achieved with the drive system of the kind mentioned in the introduction, which can be characterized by the features stated in the character part of the claim 1. During operation of a vehicle according to the preamble of claim 1, a moment began for operation of the vehicle with an accelerator pedal of a flicker. The control unit performs the operation of the electrical machineshall deliver and the torque that the internal combustion engine shall deliver said. that the vehiclereceives the torque requested by the driver. The control unit can control an appropriate control mechanism that conducts electrical energy to or from the electrical machine so that it delivers the specified torque for operation of the vehicle. The control mechanism may conduct current to or from the electrical machine with a phase and an amplitude such that itelectric machine tiff & the requested torque. The phase of the supplied current andamplitude can also be supplied, if necessary, to the electrical machine3delivers the requested torque. The torque that the electric machine delivers for operation of the vehicle can in most cases be determined with a very good accuracy.
    In a planetary gear, a relationship between the torques of the constituent components rides asdefined by the number of teeth of the respective components. Because the electricthe machine and the internal combustion engine are connected to separate components of the planetary gearbox, it is possible to calculate the torque of the multi-combustion engine with knowledge of the torque of the electric machine. With the aid of the calculating torque of the internal combustion engine, a more accurate determination of the supplied torque of the internal combustion engine is obtained.The torque applied to the internal combustion engine is only based on more conventional information such as injected fuel, etc. Such an accurate control of the supplied torque of the internal combustion engine can be used in many contexts.
    According to an embodiment of the present invention, the control unit is adapted by comparing the calculated torque of the internal combustion engine with that of the internal combustion engine.torque at an initial operating event. The calculated torque of the internal combustion engine thus provides more information on the supply torque of the internal combustion engine than the required torque of the internal combustion engine. The internal combustion engine thus always provides the required torque with good precision. By jarnfOraThe calculated torque of the internal combustion engine with the required torque of the internal combustion engine, any deviation between the applied torque of the internal combustion engine and the required torque of the internal combustion engine can be determined.
    According to an embodiment of the present invention, the control unit is adapted to storeinformation regarding the deviation between the calculated torque of the internal combustion engine and the required torque of the internal combustion engine at the said first operating event and use this stored information to control the internal combustion engine at other operating events. In this case, information is stored about a possible deviation between the calculated torque of the combustion engine and the required torque of the combustion engine. With knowledge of oneIn the event of such a deviation, the internal combustion engine can still be controlled in one waythe deviation is eliminated or at least significantly reduced. The control unit can adjust the amount of injected fuel so that the deviation is eliminated.
    According to an embodiment of the present invention, the control unit is adapted to store information regarding the deviation between the calculated torque of the internal combustion engine and the required torque of the internal combustion engine at different operating conditions of the internal combustion engine.4The deviation that exists between the request of the internal combustion engine and the supplied torque of the internal combustion engine varies with great probability in different operating conditions. The deviation can vary with operating parameters such as the combustion engine speed and torque. It is therefore convenient to store informationwhich informs about how the deviation varies with different operating parameters. With the help ofsuch information, the supplied torque of the internal combustion engine can be determined with a good accuracy at essentially all operating conditions of the internal combustion engine.
    According to an embodiment of the invention, the control unit is adapted to complementand / or update said stored information regarding the discrepancy betweenthe calculated torque of the internal combustion engine and the required torque of the internal combustion engine during subsequent initial operating events. One reason why the internal combustion engine does not deliver the required torque with the desired accuracy is many times because it also drives several auxiliary units in the vehicle in the form of a coolant pump, aradiator fan, a compressor of an AC system, etc. Then the operation of the internal combustion enginethe auxiliary units vary with, for example, the time and ambient temperature, it is advisable to relatively frequently supplement and / or update the stored information regarding the deviation between the internal combustion engine's calculated torque andCombustion engine required torque. Other reasons for aft combustion enginedoes not deliver the requested torque may be due to factors related to thecomponents that supply the fuel, the quality and temperature of the industry.
    According to an embodiment of the invention, the control unit is adapted to use the internal torque of the internal combustion engine to control the internal combustion engine at other times.clrift cases when required by the combustion engine for the requested torque witha good precision. In some shift cases, it is especially important that all the internal combustion engine supplies a requested torque with good precision. Such an operating condition is when a gearbox must be removed from the gearbox. To make this lose, a torqueless tillerid is created in the gearbox. With cat madom about mercy motomsapply torque with good precision, the extraction process of a gear can take placefaster and with better precision.
    According to an embodiment of the invention, the planetary gear comprises a coupling member withwhich makes it possible to override the output shaft of the internal combustion engine and the gear shaftinput shaft in relation to each other and the control unit here adapted to the bestthe calculated torque of the combustion engine at the first operating cases when the coupling meansis in a non-load bearing in which said shafts are rotatable at different speeds. In practice, it is possible to calculate the torque of the internal combustion engine at all operating modes when the coupling means is in the unloaded state. However, it is an advantage to calculate the torque of the internal combustion engine in certain operating cases of the vehicle thenthe torque of the internal combustion engine can be calculated with a good spread in speed and torque. Such operating conditions can be when the vehicle starts with a free planetary gear, when the vehicle is shifted and when the vehicle is driven with relatively small torques at the same time as the internal combustion engine runs on the driveway.
    According to an embodiment of the invention, the control unit is adapted to calculate ittorque provided by the internal combustion engine for the operation of the vehicle by means of parameters such as gear ratio between the internal combustion engine output shaft and the planetary gear electric machine, the moment of inertia of the electric machine, the acceleration of the electric machine, the moment of inertia of the internal combustion engine, andInternal combustion engine acceleration. In the event of an operation as an internal combustion engineoutput shaft and the electric machine rotate at constant speeds, a torque distribution is obtained between the internal combustion engine and the electric machine which is defined by the gear ratio between said components of the planetary gear. In the event of an operation when the electric machine changes speed, the male must be taken into accountthe change in speed (acceleration) and the moment of inertia of the electric machinebe able to calculate the torque of the internal combustion engine. The fidelity of the electrical machine is a known parameter. The electrical speed change can be determined by the difference in speed at two times. In the event of an operation when the internal combustion engine changes speed, consideration must be given accordinglythe change in speed (acceleration) and the moment of inertia of the internal combustion enginebe able to calculate the torque of the internal combustion engine. The moment of inertia of the internal combustion engine is a known parameter. The change in speed of the internal combustion engine can be determined by the difference in speed at two times. It is thus relatively simple to calculate the torque of the combustion engine as the other parameters can be determined relatively easily.or estimated with good accuracy.
    According to another preferred embodiment of the invention, the output shaft of the internal combustion engine is connected to the sun gear of the planetary gear, the input shaft of the gearbox is connected to the planetary gear holder of the planetary gear and the rotor of the electric machine.Connected to the ring gear of the planetary gear. With such a design, the constituent components can be given a compact construction. The sun gear and the planet wheel holder can6be connected to the output shaft of the internal combustion engine and the input shaft of the gearbox, respectively! with the aid of splines or similar. This ensures that the sun gear rotates at & amnia speed as the output shaft of the internal combustion engine and that the planetary gear holder rotates at the same speed as the input shaft of the gearbox. Rotomthe electric machine may be fixedly mounted on an outer peripheral surface of the ring gear. The inner peripheral surface of the ring wheel is usually provided with teeth. The outer peripheral surface of the ring wheel is usually smooth and there is a lot of choice for all just up the rotor of the electric machine. The ring gear and rotor of the electric machine thus form a rotatable unit. Alternatively, the rotor of the electricthe machine be connected to the ring gear via a transmission. However, it is possible thatconnect the output shaft of the internal combustion engine, the input shaft of the gearbox and the rotor of the electrical machine to any of the other components of the planetary shaft.
    The initially stated object is also achieved by the method according to claims 1.1.-.
    BRIEF DESCRIPTION OF THE DRAWINGSIn the following, as exemplary examples, preferred embodiments of the invention are describedwith reference to the accompanying drawings, in which:Fig. 1Fig. 2Fig. 3 shows a driveline has a vehicle with a drive system according to the present invention,shows the drive system in more detail andshows a flow chart showing an embodiment of a method according to the invention.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTIONFig. 1 shows a driveline for a heavy vehicle 1. The driveline comprises an internal combustion engine 2, a gearbox 3, a number of drive shafts 4 and drive wheels 5. Between the internal combustion engine 2 and the gearbox 3 the driveline comprises an intermediate portion 6. Fig. 2 shows the components therein. intermediate portion 6 in more detail.
    The internal combustion engine 2 is provided with an output shaft 2a and the shaft shaft clan 3 with an input shaft 3a in the intermediate portion 6. The output shaft 2a of the internal combustion engine7is coaxially arranged in relation to the input shaft 3a of the gearbox. Outgoing axle of internal combustion engine! 2a and the shaft 3a of the gearbox are rotatably arranged around a common axis of rotation 7. The intermediate portion 6 comprises a housing 8 enclosing an electric machine 9 and a planetary shaft. The electric machine 9 usually comprises a stator 9a and a rotor 9b. The stator 9a comprises a stator core which is fixedly attached to the inside of the housing 8. The stator cam includes the stator windings. The electric machine 9 adapted to use certain electrical energy during certain operating conditions to use good driving force for the input shaft 3a of the gearbox and during other operating conditions to use the input shaft 3 of the gearboxrorelseenergi for aft extracting and storing electrical energy.
    The planetary gear is arranged substantially radially inside the stator 9a and rotor 9b of the electric machine. The planetary gear comprises, on ordinary salt, a sun gear 10, aring gear 11 and a planet gear holder 12. The planet wheel holder 12 carried a numbergears 13 rotatably mounted in a radial space between the sun gear 10 andthe ring gear's 11 teeth. The sun gear 10 is fixed on a peripheral surface of the combustion engine's output shaft! 2a. The sun gear 10 and the output shaft 2a of the internal combustion engine rotate like a cnhct at a first speed ni. The planetary gear holder 12 comprises a fixed portion 12a which is fixed on a peripheral surface of the input shaft 3a of the gearbox by means of a splines.band 14 With the help of this band, the planet wheel holder 12 and gear can danceingende ax! 3a rotate as a unit with a second speed n2. The ring gear 11 comprises an outer peripheral surface on which the rotor 9b is fixedly mounted. The rotor 9b and the ring gear 11 constitute a rotatable unit which rotates at a third speed n3.
    DA the intermediate portion 6 between the internal combustion engine 2 and the gearbox 3 in onevehicles are limited are required by the electric machine 9 and the planetary gearbox is a compact unit. The components of the planetary gear 10-12 are arranged substantially radially inside the stator 9a of the electric machine. The rotor 9b of the electric machine, the ring gear 11 of the planetary gear, the output shaft of the internal combustion engine]. 2a andgear shaft input shaft 3a ai Mr rotatably arranged about a common axis of rotation 5. With such an embodiment, the electric machine 9 and the planetary shaft occupy a relatively small spaceThe vehicle comprises a locking mechanism which is movable between a first open layer in whichthe three components of the planetary gear 0-12 are allowed to rotate at different speeds and a second loadlayer in which it lasers together two of the planetary gear components 10, 12 said aft8the three components 10-12 of the planetary gear rotate at the same speed. In this embodiment, the welding mechanism comprises a displaceable coupling member 15. The coupling member 15 is fixed to the output shaft 2a of the internal combustion engine by means of a splines-joint 16. The coupling member 15 is in this case rotatably arranged onThe output shaft 2a of the internal combustion engine and displaceably arranged in an axial direction onCombustion engine output shaft 2a. The coupling means 15 comprises a coupling portion 15a as connectable to a coupling portion 12b of the planetary gear holder 12. The welding mechanism comprises, as schematically shown, displacement means 17 adapted to displace the coupling means 15 between the firstthe free team Ii da the coupling portions 15a, 12b not NT in engagement with each other and thatsecond load team 12 da. the coupling portions 15a, 12b at in engagement with each other. In the first open layer, the output shaft 2 of the internal combustion engine and the input shaft 3 of the gearbox can rotate at different speeds. When the coupling portions 15a, 12b are in engagement with each other, the output shaft 2 of the internal combustion engine and the input shaft of the gearbox3 to rotate at the same speed.
    An electric control unit 18 adapted to control the displacement means 17. The control unit 18 is also adapted to determine at which operating conditions the electric machine 9 is to operate as a motor and at which operating conditions it is to operate as a generator. ForTo determine this, the control unit 18 can receive current information from the appropriateoperating parameters. The control unit 18 may be a computer with appropriate software for this purpose. The control unit 18 may be one or more separate units. The control unit 18 also controls a schematically shown control equipment 19 which regulates the flow of electrical energy between a hybrid battery 20 and the stator 9a of the electrical machine. Atthe operating conditions in which the electric machine 9 operates as a motor are storedelectrical energy from the hybrid battery 20 to the stator 9a. In the case of operation in which the electric machine acts as a generator, electrical energy is supplied from the stator 9a to the hybrid battery 20. The hybrid battery 20 supplies and stores electrical energy with aground voltage of the order of 200-800 Volts. The vehicle 1 that equipped with aengine control function 26 mcd which torque of the internal combustion engine Ti and speed you can be regulated. The control unit 18 has, for example, the possibility to activatethe engine control function 26 when loading and unloading gears in the gearbox 3 to create a torque-free condition in the gearbox 3.
    During operation of the vehicle 1, a torque for operation of the vehicle 1 is requested by a driver via aschematically shown accelerator pedal 21. The control unit 18 determines the torque T3 as itthe electric machine 9 is to deliver and the torque T1 which the internal combustion engine is to deliver for the vehicle is to be driven by the required torque T. The control unit 18 controls the control mechanism 19 so that it conducts current from the hybrid battery 20 to the electric machine 9 with an amplitude and a phase the electric machine 9receives the requested torque T3. Part torque T3 which the electric machine 9 delivers for operation of the vehicle 1 is supplied or received with good precision. The control unit 18 schematically controls the injection means 22 in the internal combustion engine 2 so that fuel is injected into a quantity corresponding to the requested torque T1. However, the internal combustion engine 2 is used many times for the operation of various units in the vehicle 1. It is i.a. of thatthe cause that the internal combustion engine 2 does not always supply the requested torque T1, with aDesired precision. Other such reasons related to internal combustion engine components such as tiff & industry, industry quality and temperaftmIn a planetary gear, a connection is made between the sun gear 10, the ring gear 11 andthe moments of the planet holder 12 which are defined by the 10-12 of the respective componentsnumber of teeth. Since the electric machine 9 and the internal combustion engine 2 are to be connected to separate components 10, 12 of the planetary gear, it is necessary to calculate the torque Tie 2 of the internal combustion engine with knowledge of the estimated torque T3 of the electric machine. Since the supplied torque T3can the T3candetermined with a good accuracy corresponds to the calculated torque of the internal combustion engine 2 T the internal torque of the internal combustion engine with a good accuracy.
    The combustion engine's 2 parts T1, can be calculated according to the connectioni (-J3dw3 / dt + T3) = (-J1 dwi / dt +i = gear ratio between the electric machine and the internal combustion engine iplanetary gear,J3 = The moment of inertia of the electric machine,J1 = The moment of inertia of the internal combustion engine,Tape = the estimated torque of the electric machine,T1c = Calculated torque of the internal combustion engine,dwel / dt = Time derivative of the angular velocity of the electric machine anddwi / dt = Time derivative of the angular velocity of the internal combustion engine.and J1 are known quantities while d Weimt and dwildt denote the acceleration of the electric motor 9 and the internal combustion engine 2, respectively, and can be determined as the speed difference of the respective components per unit time between two times. The 2 elements T1 of the internal combustion engine can be calculated because the other parameters in the connection are known.
    Thus, the torque that the control unit 18 has requested from the combustion engine 2 must supply for the operation of the vehicle 1. Tth Mg & a calculated estimate of the actual torque that the combustion engine adds during operation of the vehicle 1. The calculated torque Tie thus corresponds to the actual torque with a good accuracy. The error betweenThe required torque T1 of the internal combustion engine and the actual torque can be clamed estimated as a deviation between the torque torque T1 and the calculated torque 'rte.
    Fig. 3 shows a flocculation diagram describing the procedure for operating the vehicle 1.
    The procedure starts at 30. At the first operating event D1 of the vehicle dathe coupling portions 15a, 12b are not in engagement with each other and the planetary gear in a non-Mst position is possible to calculate the torque T1c supplied by the combustion engine. At 31, such a first operational case D1 is announced. Appropriate such first operating conditions D1 that when the vehicle starts with free planetary gear, cla the vehicle is geared and thenthe vehicle is propelled with a positive or negative thrust applied at the same time asThe combustion engine is operated at idle speed. At 32, the supply torque Tle of the internal combustion engine is calculated at at least one started torque T1 and at after speed n1 with the aid of the torque Tel of the electric machine. Advantageously, a large number of moments T1 are calculated, with a good spread regarding committed moments T1 andspeed nine of the internal combustion engine 2.
    At 33 jamfOrs the requested moment Timed the bcraknade Tle. In many cases there is a deviation as the internal combustion engine 2 does not always deliver a requested torque T1 with good accuracy. Information regarding the deviation between the requested step T1 andcalculated torques Tje are thus determined by the torque at different torques T1 and the speed n / of the internal combustion engine 2. At 34, a correction model is created and a correction factor K is calculated which defines how the deviation varies with the torque of the internal combustion engine T1 and speed ni. Such a correction factor K can be determined according to a suitable mathematical method such as the least squares method. Hatredthe process can restart, at 31, ova after a new appropriate first operating case D1 atthe vehicle arises at which it is suitable for calculating the internal combustion engine 211apply torque Tic to supplement or update the correction model and the correction factor K. Otherwise, the procedure continues, at 35, when a second operating case D2 occurs at which the combustion engine 2 is to deliver a requested torque T1 with good precision. Such a second operating case D2 can then be a torque lossfill stand must be created in the gearbox 3 before laying out a gearbox. Another such secondoperating condition D2 can be when a torque-free condition is to be created between the sun gear 10 and the planet holder 12 before disengagement of the coupling member 15.
    At 36, it is determined with the aid of the requested moment Ti and the correction factor K dena lot of fuel I to be injected into the combustion engine 2 for all that is requiredtorque T1 must be obtained with good precision. By means of such a correction model, the control unit 18 can control the injection means 22 so that it injects a variety of fuel so that the internal combustion engine 2 provides the required torque Ti riled a good precision. The procedure then continues at 35 at the next secondoperational failure case D2 that arises during continued operation of the vehicle. The alternative continuesthe procedure at 31 when a new first operating case D1 arises at which it is appropriate Mr aft calculate the internal combustion engine 2 to supply torque Tic for all supplement or update the correction model and the correction factor K. Since the internal combustion engine 2 can drive certain units in the vehicle intermittently or with avarying effect, it is important that all correction factors are updated relatively frequently. INIn the above-mentioned method, the correction factor K is used only in the case of operation when the combustion engine 2 must provide a requested torque T1 with good precision. However, it is possible to use the correction factor for everyoneThe invention is in no way limited to that described in the drawingsthe embodiment but can be varied fine Mom the framework of the patent claims. For example, a transmission with a gear ratio can be arranged between the rotor 9 and the ring wheel 11. The rotor 9 and the ring wheel 11 thus do not need to rotate at the same speed.12
    权利要求:
    Claims (22)
    [1]
    A drive system for a vehicle (1), the drive system comprising an internal combustion engine (2) with an output shaft (2a), a gear shaft (3) with an input shaft (3a), an electric machine (9) comprising a stator ( 9a) and a rotor (9b), and a planetary gear comprising a sun gear (10), after ring gear (11) and a planetary gear holder (12), the output shaft (2a) of the internal combustion engine being connected to a first of said components of the planetary gear shaft such as a rotation of the denim shaft (2a) leads to a rotation of this component, the input shaft (3a) of the gearbox being connected to a second of said components of the planetary shaft so that a rotation of this shaft leads to a rotation of this component and the the rotor (9b) of the electric machine is connected to a third of the components of the planetary gear so that a rotation of the rotor (9b) leads to a rotation of this component, characterized by the whole drive system comprising a control unit (18) adapted to all access to information n regarding the torque of the electric machine (9) (Tel) Rh - operation of the vehicle (1) and to calculate the torque of the internal combustion engine (2) (TO for operation of the vehicle in at least one first operating event (D1) when there is a known relationship between the the torque of the electric machine (To) and the torque of the combustion engine (TO).
    [2]
    Drive system according to claim 1, characterized by all the control unit (18) being adapted to all the calculated torque of the internal combustion engine (TO riled a requested torque (Ti) of the internal combustion engine (2) at the first operating event (D1).
    [3]
    Drive system according to claim 2, characterized by the control unit (18) being adapted to store all the information regarding the deviation between the internal torque (Tic) of the internal combustion engine and the required torque of the internal combustion engine (T1) at the first operating event (Di) and to use this stored information to control the combustion engine (2) in the event of a second operation (D2).
    [4]
    Drive system according to claim 3, characterized in that the control unit (18) is adapted to store information regarding the deviation between the internal torque (Tie) of the internal combustion engine and the required torque (Ti) of the internal combustion engine at different operating conditions (Ti, ni) of the internal combustion engine (2). .
    [5]
    Drive system according to claim 3 or 4, characterized by the control unit (18) being adapted to grain / update or update said stored information regarding the deviation 13 between the calculated torque (T1e) of the internal combustion engine and the required torque (Ti) of the internal combustion engine during subsequent first operating events ( Di).
    [6]
    Drive system according to any one of the preceding claims 3 to 5, characterized in that the control unit (18) is adapted to use the combustion torque (Tie) of the internal combustion engine to control the internal combustion engine (2) in other operating cases (D2) when the internal combustion engine (2) is required apply the required torque (Ii) with good precision.
    [7]
    Drive system according to claim 6, characterized in that the control unit (18) is adapted to use the calculated torque (T1c) of the internal combustion engine to control the internal combustion engine (2) at other operating events (D2) such as when a shaft is to be laid out of the gearbox.
    [8]
    Drive system according to one of the preceding claims, characterized in that the planetary gear comprises a coupling means (15) with which it is possible to load all the output shaft 2a of the internal combustion engine and the input shaft 3a of the gearbox in relation to each other and all the control unit (18) adapted to determine the rated torque (T1) of the internal combustion engine at the first thift event (Di) da. the coupling means (15) is in a non-load in which said axes (2a, 3a) are rotatable at different speeds (m, n2).
    [9]
    Drive system according to one of the preceding claims, characterized in that the control unit (18) adapts all the determined torque (Tie) of the internal combustion engine by means of a connection which comprises gear ratio (1) between the shaft (2a) of the internal combustion engine and the electric mask (9). ) in the planetary gear, the moment of inertia (J3) of the electric machine, the moment of inertia (71) of the internal combustion engine, the acceleration of the electric machine (9), and the acceleration of the internal combustion engine (2).
    [10]
    A drive system according to any one of the preceding claims, characterized in that the output shaft (2a) of all the combustion engine is connected to the sun gear (10) of the planetary gear, that the gear shaft of the gear shaft (3a) is connected to the planet gear holder (12) of the planetary gear and the electric shaft. the rotor (9b) of the machine is connected to the ring gear (11) of the planetary gear.
    [11]
    A method of operating a vehicle (1), wherein the vehicle comprises a combustion engine (2) with an output shaft (2a), a gear shaft (3) with an input shaft (3a), an electric machine (9) comprising a stator (9a) and a rotor (9b), and a planetary gear comprising a sun gear (10), a ring gear (11) and a planet gear holder 14 (12), the output shaft (2a) of the internal combustion engine being connected to a first of nanoid components of the planetary shaft so that a rotation of this shaft (2a) leads to a rotation of this component, the input shaft (3a) of the gearbox being connected to a second of said components of the planetary shaft so that a rotation of this shaft leads to a rotation of this shaft. component and the rotor (9b) of the electric machine are connected to a third of nanindic components of the planetary gear so that any rotation of the rotor (9b) leads to a rotation of this component, characterized by the steps all having access to information concerning the electric machine. (9) mome nt (Td) for operation of the vehicle (1) and all torque of the internal combustion engine (2) RV operation of the vehicle in at least one initial operating case (Di) as there is a known relationship between the torque of the electric machine (Tel) and the internal combustion engine moment (Tie).
    [12]
    A method according to claim 11, characterized by the step of comparing the calculated torque (Tic) of the internal combustion engine 15 with a requested torque (Ti) of the internal combustion engine (2) at said first operating time (Di).
    [13]
    A method according to claim 12, characterized by the steps of storing information regarding the deviation between the calculated torque (Tie) of the internal combustion engine and the requested torque (Ti) of the internal combustion engine at said first operating case (Di) and all using this stored information to control the internal combustion engine (2) at a second operating case (D2).
    [14]
    A method according to any one of claims 13, characterized by the steps of storing all information regarding the deviation between the calculated torque (Tie) of the internal combustion engine and the required torque (Ti) of the internal combustion engine at different operating conditions (Ti, ni) of the internal combustion engine (2).
    [15]
    A method according to any one of the preceding claims 13 or 14, characterized by the step of all grain crushing and / or updating said stored information regarding the deviation between the calculated torque of the internal combustion engine (Tic) and the required torque (Ti) of the internal combustion engine during subsequent first operating events (DO).
    [16]
    A method according to any one of the preceding claims 13 to 15, characterized by the step of. use the calculated torque (Tie) of the internal combustion engine to control the internal combustion engine (2) in the second operating case (D2) cla it is required by the internal combustion engine (2) to supply the required torque (Ti) with good precision.
    [17]
    Method according to claim 16, characterized by the step of utilizing the internal torque of the internal combustion engine (TO for controlling the internal combustion engine (2) at the second operating event (D2) as a gear unit is to be laid out of the gearbox.
    [18]
    A method according to any one of the preceding claims 11-17, characterized by the steps of unloading the output shaft 2a of the internal combustion engine and the input shaft 3a of the gear shaft in relation to each other with a coupling means (15) and determining the calculated torque (Tic) of the internal combustion engine at first operating Di) dd. the coupling means (15) is in a non-load ldge in which said shafts (2a, 3a) are rotatable at different speeds (ni, 112).
    [19]
    Method according to any one of the preceding claims 11-18, characterized by the steps of determining the calculated torque (Tic) of the internal combustion engine by means of a connection comprising gear ratio (i) between the shaft (2a) of the internal combustion engine and the electric machine (9) in the planetary gear , the moment of inertia of the electric machine (.13), the moment of inertia of the internal combustion engine (J1), the acceleration of the electric machine (9), and the acceleration of the internal combustion engine (2).
    [20]
    A method according to any one of the preceding claims 11-19, characterized by the steps of connecting the output shaft (2) of the internal combustion engine to the sun gear (9) of the planetary gear shaft, of connecting the input shaft shaft (3) to the planetary gear holder (11) of the planetary gear shaft and of connecting it the rotor (8) of the electric machine with the ring gear (10) of the planetary gear.
    [21]
    A computer program comprising computer program code for causing a computer to implement a method according to any of the terms 11-20 when the computer program code is executed in the computer.
    [22]
    A computer program product comprising a data storage medium readable by a computer, wherein the computer program code of a computer program according to claim 21 is stored pd. the data storage medium. 'en 1- z 6Ld - 6 1, um ■ q6 LI 6 .1 II 1 .111 ■■ 1, Z OZ 61J NIA VA IIIA II MI Il // k ////// WrI FA rA ral r 11111' 1111 II M W MI ■■% IMP) ■ • • BZ 1, E s' M. Z11,, I ZZ DOO 2/2
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    同族专利:
    公开号 | 公开日
    WO2014003666A1|2014-01-03|
    RU2598705C2|2016-09-27|
    US9592821B2|2017-03-14|
    BR112014032270A2|2017-06-27|
    US20150191163A1|2015-07-09|
    EP2867092A4|2016-05-25|
    RU2015102277A|2016-08-20|
    CN104507779A|2015-04-08|
    EP2867092A1|2015-05-06|
    SE538352C2|2016-05-24|
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    法律状态:
    优先权:
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    SE1250718A|SE538352C2|2012-06-27|2012-06-27|Drive system and method for determining the torque of an internal combustion engine of a hybrid vehicle|SE1250718A| SE538352C2|2012-06-27|2012-06-27|Drive system and method for determining the torque of an internal combustion engine of a hybrid vehicle|
    PCT/SE2013/050785| WO2014003666A1|2012-06-27|2013-06-26|Drive system for hybrid vehicle with means for calculating engine torque based on motor torque|
    US14/410,643| US9592821B2|2012-06-27|2013-06-26|Drive system for hybrid vehicle with means for calculating engine torque based on motor torque|
    BR112014032270A| BR112014032270A2|2012-06-27|2013-06-26|hybrid vehicle drivetrain with means for calculating engine torque based on engine torque|
    RU2015102277/11A| RU2598705C2|2012-06-27|2013-06-26|Drive system for hybrid vehicle equipped with engine torque measuring mean based on electric motor torque|
    EP13809960.1A| EP2867092A4|2012-06-27|2013-06-26|Drive system for hybrid vehicle with means for calculating engine torque based on motor torque|
    CN201380039810.1A| CN104507779A|2012-06-27|2013-06-26|Drive system for hybrid vehicle with means for calculating engine torque based on motor torque|
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