WO2021058146A1 - Method for selecting the target state of a vehicle drive train - Google Patents
Method for selecting the target state of a vehicle drive train Download PDFInfo
- Publication number
- WO2021058146A1 WO2021058146A1 PCT/EP2020/066519 EP2020066519W WO2021058146A1 WO 2021058146 A1 WO2021058146 A1 WO 2021058146A1 EP 2020066519 W EP2020066519 W EP 2020066519W WO 2021058146 A1 WO2021058146 A1 WO 2021058146A1
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- WO
- WIPO (PCT)
- Prior art keywords
- spd
- dls
- max
- relia
- maximum
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 239000013598 vector Substances 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000010187 selection method Methods 0.000 claims 6
- 238000007596 consolidation process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/184—Preventing damage resulting from overload or excessive wear of the driveline
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
- B60W30/1884—Avoiding stall or overspeed of the engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/081—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- the present invention relates to the control of hybrid powertrains.
- a method for selecting the state setpoint of a vehicle kinematic chain connecting several traction units including a heat engine and at least one electric machine to the wheels of the vehicle by means of a transmission among a set of states present in the transmission defined by different combinations of couplers and reducers thereof to ensure the transfer of torque from the heat engine and / or the electric machine towards the wheels on one or more ratios reduction.
- a hybrid vehicle generally comprises a set of traction units, including at least one heat engine and one electric machine, making up its powertrain, or GMP.
- the GMP of a hybrid vehicle has multiple operating limits, which are imposed by the minimum / maximum rotation speeds of the rotating parts, and in particular of its traction units: beyond these speeds, the traction units are in a situation of under-speed, or over-speed, with high risks of mechanical breakage.
- the states of a hybrid vehicle kinematic chain can be defined as combinations of coupler (s) and reducer (s) which are specific to the architecture of the vehicle, and of its GMP.
- the state selection strategies must take into account the mechanical limits of all the traction members. These strategies must anticipate changes of state, in particular to avoid under-revs or over-revs due to the dynamics of the vehicle and the reaction time of the GMP to carry out the changes of state. For the same purpose, they sometimes need to temporarily freeze certain status instructions.
- the present invention aims to ensure the mechanical reliability of a GMP, taking into account the particularity of the stresses imposed by its transmission and traction members.
- the selection of the state setpoint includes a step of determining the minimum and maximum travel speeds of the vehicle making it possible to guarantee the mechanical reliability of the traction units on each of the available states of the kinematic chain.
- raw values of speeds of displacement depending on:
- FIG.l is a flowchart 1 of the proposed method.
- This method makes it possible to provide transverse information in real time to a GMP computer responsible for selecting the states targeted by a hybrid vehicle GMP.
- This GMP can be provided, like that of publication EP 2694309 (to which reference may be made), with a heat engine and a single electric drive machine and comprising two concentric primary shafts each carrying at least one descent pinion on a secondary shaft connected to the wheels of the vehicle.
- the architecture described in this publication offers a nonlimiting application for the method which is the subject of the present invention.
- the transverse information supplied to the computer are the minimum and maximum vehicle travel speeds, achievable in order to comply with the reliability constraints linked to the speeds of rotation of the traction units, on each of the kinematic chain states available.
- This information is used to select the state setpoint of the kinematic chain connecting several traction units including a heat engine and at least one electric machine to the wheels of the vehicle via a transmission.
- the selection is made among a set of states present in the transmission, which are defined by different combinations of couplers and reducers, to ensure the transfer of torque from the heat engine and / or the electric machine towards the wheels, on one or more gear ratios.
- Figure 1 we have indicated all the input data, which are necessary to develop the cross-sectional information:
- MAX_EM_SPD is the maximum speed attainable by the main traction machine, if it is present on the powertrain; this data is updated in real time by the function responsible for actuating the electric machine; ICE_TEMP is the water temperature of the heat engine, updated in real time; MAX_ICE_SPD is the maximum speed attainable by the heat engine; if an electric machine is coupled to the heat engine, MAX_ICE_SPD takes into account the maximum authorized speed of the latter; MAX_ICE_SPD is updated in real time by the function responsible for actuating the heat engine;
- - DLS_TGT is the current state target of the kinematic chain
- DLS_TYP_LIST is the vector of the energy types of states (thermal, electric or hybrid); this vector makes it possible to know what types of states are available on the powertrain and what their energy definitions are; DLS_TYP_LIST is provided by a third party function, which is specific to each GMP, and which does not vary during its operation;
- PAR_LIMIT_ENA is an adjustment parameter, which takes the value 1, or 0.
- PAR_LIMIT_ENA takes the value 1 when the GMP includes only one electric traction machine whose maximum speed limit must be taken, and this limit does not cannot be included in the value of the maximum speed of the heat engine MAX_ICE_SPD, because the electric machine is not directly mechanically connected to the heat engine; this is the case in the architecture described in the publication EP
- PAR_LIMIT_ENA takes the value 0 in the other cases, in particular when there is a second electric machine coupled directly to the heat engine.
- the types of states of the DLS_TYP_LIST vector can be the following:
- HEV_SER_RVR series hybrid type traction with reversal of direction of the electric machine
- DLS_MIN_RELIA_VH_SPD_RAW (X) DLS_MIN_ICE_VH_SPD (X)
- DLS_MAX_RELIA_VH_SPD_RAW (X) the minimum value between DLS_MAX_ICE_VH_SPD (X) and DLS_MAX_EM_VH_SPD (X);
- DLS_MIN_RELIA_VH_SPD_RAW (X) DLS_MIN_ICE_VH_SPD (X).
- the PAR_LIMIT_ENA adjustment parameter can take the value 1 or 0. It is equal to 1, when the GMP has only one electric machine, the maximum speed limit of which is not included in the value of the maximum speed of the heat engine MAX_ICE_SPD.
- DLS_MAX_RELIA_VH_SPD_RAW (X) is equal to the minimum value between DLS_MAX_ICE_VH_SPD (X) and DLS_MAX_EM_VH_SPD (X).
- the GMP has only one electric machine, the maximum speed limit of which MAX_EM_SPD is not included in the value of the maximum speed of the heat engine (MAX_ICE_SP), the gross maximum speed of the vehicle is DLS_MAX_RELIA_VH_SPD_RAW (X) is the minimum value between the maximum speeds DLS_MAX_ICE_VH_SPD (X) and DLS_MAX_EM_VH_SPD (X) authorized by the heat engine and by the electric machine.
- the maximum gross speed of the vehicle DLS_MAX_RELIA_VH_SPD_RAW (X) is equal to the maximum speed authorized by the thermal engine DLS_MAX_ICE_VH_SPD (X).
- the first consolidation consists in subtracting or adding a vehicle speed difference SPD_OES to the set of reliability limits calculated for each of the different states of the current target DLS_TGT.
- the minimum and maximum gross vehicle travel speeds DLS_MIN_RELIA_VH_SPD_RAW and DLS_MAX_RELIA_VH_SPD_RAW are consolidated respectively by adding or subtracting a speed difference SPD_OFS, on all available states other than the current target DLS_TGT. This deviation reduces the usable speed range, removing from it a margin between the actual achievable values and the calculated limit speeds, specified to the downstream functions for selecting the target states using this information.
- These consolidated displacement limit speed values are called respectively DLS_MIN_RELIA_VH_SPD_CS and DLS_MIN_RELIA_VH_SPD_CS, with:
- the second consolidation aims to impose a specific minimum value on a state of the kinematic chain, in the case where this state is attainable thanks to the sliding of a coupler located between the machine or heat engine used and the wheel; the specific value makes it possible to reach a kinematic chain state, at a vehicle travel speed lower than the calculated nominal value.
- a minimum speed can also be imposed on the states of the kinematic chain allowing the vehicle to take off from zero speed and using only the electric machine to pull the vehicle.
- DLS_VS_MIN_ENA is used for this; this parameter is a vector specifying a replacement value for each state. DLS_VS_MIN_VALUE, and to determine whether the calculated minimum speed value DLS_MIN_RELIA_VH_SPD_CS should be used, or replaced by the specified replacement value.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Transmission Device (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022514194A JP2022550264A (en) | 2019-09-26 | 2020-06-15 | How to choose a target state for a vehicle drive train |
KR1020227010135A KR20220063186A (en) | 2019-09-26 | 2020-06-15 | How to select the target state of the vehicle drivetrain |
EP20731516.9A EP4034437A1 (en) | 2019-09-26 | 2020-06-15 | Method for selecting the target state of a vehicle drive train |
CN202080067686.XA CN114502438A (en) | 2019-09-26 | 2020-06-15 | Method for selecting a target state of a vehicle drive train |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1910628A FR3101305B1 (en) | 2019-09-26 | 2019-09-26 | METHOD FOR SELECTING THE STATE SETPOINT OF A VEHICLE KINEMATIC CHAIN |
FR1910628 | 2019-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021058146A1 true WO2021058146A1 (en) | 2021-04-01 |
Family
ID=69468701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/066519 WO2021058146A1 (en) | 2019-09-26 | 2020-06-15 | Method for selecting the target state of a vehicle drive train |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4034437A1 (en) |
JP (1) | JP2022550264A (en) |
KR (1) | KR20220063186A (en) |
CN (1) | CN114502438A (en) |
FR (1) | FR3101305B1 (en) |
WO (1) | WO2021058146A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090118087A1 (en) * | 2007-11-01 | 2009-05-07 | Gm Global Technology Operations, Inc. | System constraints method ofcontrolling operation of an electro-mechanical transmission with an additional constraint range |
EP2694309A1 (en) | 2011-04-01 | 2014-02-12 | Renault S.A.S. | Hybrid transmission for a motor vehicle, and control method |
FR3013019A1 (en) | 2013-11-08 | 2015-05-15 | Renault Sa | CINEMATIC TRANSMISSION CHAIN SELECTION METHOD AND DEVICE THEREFOR |
FR3023526A1 (en) | 2014-07-10 | 2016-01-15 | Renault Sas | METHOD FOR SELECTING THE STATUS SET IN A CINEMARY CHAIN |
DE102014221055A1 (en) * | 2014-10-16 | 2016-04-21 | Bayerische Motoren Werke Aktiengesellschaft | Speed limitation of a prime mover in a vehicle with several different vehicle axles driving drive machines |
DE102016114743A1 (en) * | 2016-08-09 | 2018-02-15 | Volkswagen Aktiengesellschaft | Method for operating a hybrid drive system and motor vehicle with a hybrid drive system |
-
2019
- 2019-09-26 FR FR1910628A patent/FR3101305B1/en active Active
-
2020
- 2020-06-15 JP JP2022514194A patent/JP2022550264A/en active Pending
- 2020-06-15 WO PCT/EP2020/066519 patent/WO2021058146A1/en unknown
- 2020-06-15 KR KR1020227010135A patent/KR20220063186A/en active Search and Examination
- 2020-06-15 CN CN202080067686.XA patent/CN114502438A/en active Pending
- 2020-06-15 EP EP20731516.9A patent/EP4034437A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090118087A1 (en) * | 2007-11-01 | 2009-05-07 | Gm Global Technology Operations, Inc. | System constraints method ofcontrolling operation of an electro-mechanical transmission with an additional constraint range |
EP2694309A1 (en) | 2011-04-01 | 2014-02-12 | Renault S.A.S. | Hybrid transmission for a motor vehicle, and control method |
FR3013019A1 (en) | 2013-11-08 | 2015-05-15 | Renault Sa | CINEMATIC TRANSMISSION CHAIN SELECTION METHOD AND DEVICE THEREFOR |
FR3023526A1 (en) | 2014-07-10 | 2016-01-15 | Renault Sas | METHOD FOR SELECTING THE STATUS SET IN A CINEMARY CHAIN |
DE102014221055A1 (en) * | 2014-10-16 | 2016-04-21 | Bayerische Motoren Werke Aktiengesellschaft | Speed limitation of a prime mover in a vehicle with several different vehicle axles driving drive machines |
DE102016114743A1 (en) * | 2016-08-09 | 2018-02-15 | Volkswagen Aktiengesellschaft | Method for operating a hybrid drive system and motor vehicle with a hybrid drive system |
Also Published As
Publication number | Publication date |
---|---|
JP2022550264A (en) | 2022-12-01 |
CN114502438A (en) | 2022-05-13 |
FR3101305A1 (en) | 2021-04-02 |
EP4034437A1 (en) | 2022-08-03 |
KR20220063186A (en) | 2022-05-17 |
FR3101305B1 (en) | 2022-07-29 |
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