CN101450629B - 车辆的动力系控制系统和操作该动力系控制系统的方法 - Google Patents

车辆的动力系控制系统和操作该动力系控制系统的方法 Download PDF

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CN101450629B
CN101450629B CN2008101497622A CN200810149762A CN101450629B CN 101450629 B CN101450629 B CN 101450629B CN 2008101497622 A CN2008101497622 A CN 2008101497622A CN 200810149762 A CN200810149762 A CN 200810149762A CN 101450629 B CN101450629 B CN 101450629B
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torque request
module
axletree
torque
propulsive
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CN101450629A (zh
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R·C·小西蒙
L·G·沃兹尼亚克
M·利夫什茨
C·E·怀特尼
C·H·富尔克茨
S·J·奇诺维思
D·J·斯特罗
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GM Global Technology Operations LLC
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48Parallel type
    • B60K6/485Motor-assist type
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60WCONJOINT 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
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • B60W20/10Controlling the power contribution of each of the prime movers to meet required power demand
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
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    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60WCONJOINT 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
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    • B60W30/18Propelling the vehicle
    • B60W30/188Controlling power parameters of the driveline, e.g. determining the required power
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/021Introducing corrections for particular conditions exterior to the engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F02D41/02Circuit arrangements for generating control signals
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    • F02D41/1497With detection of the mechanical response of the engine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
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    • B60L2240/423Torque
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/44Drive Train control parameters related to combustion engines
    • B60L2240/441Speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/48Drive Train control parameters related to transmissions
    • B60L2240/486Operating parameters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2510/00Input parameters relating to a particular sub-units
    • B60W2510/06Combustion engines, Gas turbines
    • B60W2510/0638Engine speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2510/00Input parameters relating to a particular sub-units
    • B60W2510/06Combustion engines, Gas turbines
    • B60W2510/069Engine braking signal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2510/00Input parameters relating to a particular sub-units
    • B60W2510/10Change speed gearings
    • B60W2510/1005Transmission ratio engaged
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2520/00Input parameters relating to overall vehicle dynamics
    • B60W2520/28Wheel speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/10Accelerator pedal position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2710/00Output or target parameters relating to a particular sub-units
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    • B60W2710/0666Engine torque
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2710/00Output or target parameters relating to a particular sub-units
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    • B60W2710/083Torque
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2710/00Output or target parameters relating to a particular sub-units
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/14Adaptive cruise control
    • B60W30/16Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1401Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1433Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2250/00Engine control related to specific problems or objectives
    • F02D2250/18Control of the engine output torque
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2250/00Engine control related to specific problems or objectives
    • F02D2250/18Control of the engine output torque
    • F02D2250/22Control of the engine output torque by keeping a torque reserve, i.e. with temporarily reduced drive train or engine efficiency
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/021Introducing corrections for particular conditions exterior to the engine
    • F02D41/0215Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
    • F02D41/0225Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the gear ratio or shift lever position
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

本发明涉及协调扭矩结构中的扭矩请求模块的结合。具体而言公开了一种用于车辆的动力系控制系统,其包括:多个车轴扭矩请求模块,所述多个车轴扭矩请求模块根据车辆的相应性能标准产生相应的车轴扭矩请求;车轴扭矩仲裁模块,所述车轴扭矩仲裁模块基于所述多个车轴扭矩请求产生净车轴扭矩请求;多个推进扭矩请求模块,所述多个推进扭矩请求模块基于车辆发动机的相应性能标准产生相应的推进扭矩请求;推进扭矩仲裁模块,所述推进扭矩仲裁模块基于所述净车轴扭矩请求和所述多个推进扭矩请求确定净发动机扭矩请求;和推进扭矩控制模块,所述推进扭矩控制模块基于所述净发动机扭矩请求控制多个致动器,使得发动机根据所述净发动机扭矩请求产生输出扭矩。

Description

车辆的动力系控制系统和操作该动力系控制系统的方法
相关申请的交叉引用
本申请要求于2007年7月16日提交的美国临时申请No.60/959,697的优先权。上述申请的内容通过参考并入本文。 
技术领域
本披露涉及协调影响车辆动力系扭矩的多个扭矩请求模块和多个致动器之间的扭矩请求。 
背景技术
在此提供的背景技术用于总体上提出本披露的内容。当前称为发明者的工作,就该背景技术部分以及说明中所描述的范围,可能不限定为提交时刻的现有技术,也不被明确地或隐含地接受为本披露的现有技术。 
动力系控制系统包括需要一定量发动机扭矩以适当地操作的多个模块。例如,自动变速器控制模块需要即刻地降低来自发动机的扭矩以改变变速器档位。另一示例为空调离合器控制模块,在接合空调压缩机离合器之前片刻,所述空调离合器控制模块需要增加发动机扭矩。发动机扭矩增加有助于在压缩机离合器接合时保持恒定的发动机转速,尤其是在发动机怠速时。 
在现有技术中,这些不同模块直接影响扭矩致动器。例如,自动变速器控制模块在换档期间可以延迟发动机的火花提前以降低发动机扭矩。类似地,空调离合器控制模块在接合压缩机离合器之前片刻期间可增加火花提前以增加发动机扭矩。 
由于车辆动力系统包括影响扭矩的更多模块和更多致动器,现有技术的结构不便于维护和难以检修。作为更多致动器的示例,混合动力车辆包括提供扭矩的发动机和电动机。由于现有动力系控制结构,将混合动力车辆动力系整合到现有扭矩修正模块可能不便利。 
发明内容
[0007]用于车辆的动力系控制系统包括多个车轴扭矩请求模块,所述多个车轴扭矩请求模块根据车辆的相应性能标准产生相应的车轴扭矩请求;车轴扭矩仲裁模块,所述车轴扭矩仲裁模块基于所述多个车轴扭矩请求产生净车轴扭矩请求;多个推进扭矩请求模块,所述多个推进扭矩请求模块基于车辆发动机的相应性能标准产生相应的推进扭矩请求;推进扭矩仲裁模块,所述推进扭矩仲裁模块基于所述净车轴扭矩请求和所述多个推进扭矩请求确定净发动机扭矩请求;和推进扭矩控制模块,所述推进扭矩控制模块基于所述净发动机扭矩请求控制多个致动器,使得发动机根据所述净发动机扭矩请求产生输出扭矩。 
[0008]在其它特征中,车轴至推进扭矩转换模块基于轴传动比、轮胎直径、和变速器传动比中的至少一个将所述净车轴扭矩请求转换为推进扭矩请求。所述多个车轴扭矩请求模块包括巡航控制扭矩请求模块,所述巡航控制扭矩请求模块基于车辆的巡航控制设定速度产生所述车轴扭矩请求中的一个。适应性巡航控制扭矩请求模块基于车辆环境将车轴扭矩校正值传达给所述巡航控制请求模块。所述多个车轴扭矩请求模块包括牵引/拖拽控制模块,所述牵引/拖拽控制模块基于车辆轮胎和道路表面之间的滑移产生所述车轴扭矩请求中的一个。所述多个车轴扭矩请求模块包括车辆过速保护模块,所述车辆过速保护模块基于车辆的预定速度限制产生所述车轴扭矩请求中的一个。所述多个车轴扭矩请求模块包括制动扭矩管理模块,所述制动扭矩管理模块基于由车辆制动器提供的制动扭矩产生所述车轴扭矩请求中的一个。 
[0009]在其它特征中,所述多个推进扭矩请求模块包括防止失速模块,所述防止失速模块基于保持发动机运行所需要的最小扭矩产生所述推进扭矩请求中的一个。所述多个推进扭矩请求模块包括发动机起动和停止(crank and stop)模块,所述发动机起动和停止模块基于发动机是否新近组装产生所述推进扭矩请求中的一个。所述多个推进扭矩请求模块包括发动机容量保护模块,所述发动机容量保护模块基于预定催化剂温度限制产生所述推进扭矩请求中的一个。所述多个推进扭矩请求模块包括变速器扭矩请求模块,所述变速器扭矩请求模块基于变速器换档产生所述推进扭矩请求中的一个。所述多个推进 扭矩请求模块包括发动机过速保护模块,所述发动机过速保护模块基于预定最大发动机RPM产生所述推进扭矩请求中的一个。所述多个推进扭矩请求模块包括发动机怠速速度控制,所述发动机怠速速度控制基于发动机的希望怠速速度产生所述推进扭矩请求中的一个。所述多个推进扭矩请求模块包括储备扭矩请求模块,所述储备扭矩请求模块基于为补偿发动机上即将发生的负载变化发动机所需要的扭矩产生相应的推进扭矩请求。所述储备扭矩请求模块包括空调压缩机扭矩补偿模块,所述空调压缩机扭矩补偿模块基于为补偿由于空调压缩机离合器接合和脱离引起的即将发生的负载变化发动机所需要的扭矩而产生相应的推进扭矩请求。所述储备扭矩请求模块包括催化剂点火模块,所述催化剂点火模块产生相应的推进扭矩请求以改变发动机的排气气体温度。 
[0010]在其它特征中,所述车辆是汽油/电动混合动力车辆,所述动力系控制系统还包括混合动力控制模块,所述混合动力控制模块确定所述净车轴扭矩请求中多少扭矩由电动机提供。 
[0011]一种操作车辆的动力系控制系统的方法,所述方法包括:基于车辆的相应性能标准产生车轴扭矩请求;基于所述车轴扭矩请求产生净车轴扭矩请求;基于车辆发动机的相应性能标准产生推进扭矩请求;基于所述净车轴扭矩请求和所述推进扭矩请求确定净发动机扭矩请求;和基于所述净发动机扭矩请求控制多个致动器,使得发动机根据所述净发动机扭矩请求产生输出扭矩。 
[0012]在其它特征中,所述方法包括基于车轴传动比、轮胎直径、和变速器传动比中的至少一个将所述净车轴扭矩请求转换为推进扭矩请求。所述车轴扭矩请求中的一个基于车辆的巡航控制设定速度。所述方法包括基于车辆环境修正所述车轴扭矩请求。所述车轴扭矩请求中的一个基于车辆轮胎和道路表面之间的车轮滑移。所述车轴扭矩请求中的一个基于车辆的预定速度限制。所述车轴扭矩请求中的一个基于车辆制动器提供的制动扭矩。 
[0013]在其它特征中,所述推进扭矩请求中的一个基于保持发动机运行所需要的最小扭矩。所述推进扭矩请求中的一个基于发动机是否新近组装。所述推进扭矩请求中的一个基于预定催化剂温度限制。所述推进扭矩请求中的一个基于变速器换档。所述推进扭矩请求中的 一个基于预定最大发动机RPM。所述推进扭矩请求中的一个基于发动机的希望怠速速度。所述推进扭矩请求中的一个基于为补偿发动机上即将发生的负载变化发动机所需要的扭矩。所述推进扭矩请求中的一个基于为补偿由于空调压缩机离合器接合和脱离引起的即将发生的负载变化发动机所需要的扭矩。所述推进扭矩请求中的一个基于增加排气气体温度以加热催化剂至催化剂点火温度。 
[0014]在其它特征中,所述方法包括确定所述净车轴扭矩请求中多少扭矩由混合动力系的电动机提供。 
[0015]在另外特征中,上述系统和方法由用一个或更多处理器执行的计算机程序实施。所述计算机程序可以位于计算机可读取介质上,例如但不限于内存、非易失性数据存储器和/或其它合适的有形存储介质。 
[0016]本披露的进一步应用范围在其后提供的详细说明中显而易见。需要理解的是所述详细说明和具体示例虽然表示本披露的优选实施例,但只是为了说明而并不打算限制本披露的范围。 
附图说明
[0017]本披露从详细说明和附图将更全面地理解,其中: 
[0018]图1是车辆动力系的功能框图;和 
[0019]图2A和2B是用于车辆动力系的协调扭矩控制系统的功能框图。 
具体实施方式
[0020]以下说明本质上仅为示范性的且决不限定本披露、其应用或使用。为清楚起见,在附图中使用相同的附图标记表示相同的元件。如在此所使用的,短语“A、B和C中的至少一个”应当理解为使用非排他逻辑“或”表示的逻辑(A或B或C)。应当理解的是,方法内的步骤可以不同的顺序执行而不改变本披露的原理。 
[0021]如在此所使用的,术语“模块”指的是特殊应用集成电路(ASIC)、电子电路、执行一个或更多软件或固件程序的处理器(共享、专用、或群组)和存储器、组合逻辑电路、和/或提供所述功能的其他合适部件。
[0022]现在参见图1,示出了车辆动力系20的功能框图。动力系20包括产生扭矩的内燃机22。扭矩数量由一个或更多致动器24建立,所述致动器24根据来自动力系控制模块(PCM)26的指令控制发动机22的燃料、点火、残余排气气体或排气再循环(EGR)、汽缸发火数量和空气流量中的至少一个。应当理解,发动机22可以为柴油发动机,在此情况下点火和空气流量不受PCM26控制;然而,燃料数量、喷射正时、残余排气气体或EGR、和涡轮增压被控制以控制扭矩数量。例如,EGR和增压借助于在汽缸进料中用排气气体取代空气间接控制空气流量。曲轴位置传感器28产生表示发动机22转速的信号。来自发动机22的排气通过催化剂30。来自发动机22的扭矩可用于驱动附件载荷。空调压缩机29是附件载荷的示例。PCM26可以采用压缩机离合器31来选择性地将空调压缩机29从发动机扭矩联接和分离。附件载荷的其它示例包括交流发电机、动力转向泵、空气泵、和类似物。 
[0023]动力系20也可以包括电动机32,电动机32根据扭矩指令34提供扭矩。电动机32的扭矩可以与发动机22的扭矩结合为动力系20提供动力。虽然电动机32示出为与发动机22的扭矩输出串连联接,应当理解,其它构造也认为在本说明书的范围内。例如,电动机32可以实施为直接提供扭矩给车轮36而不是通过变速器38的一个或更多电动机。 
[0024]发动机22和电动机32结合的扭矩应用于变速器38的输入。变速器38可以为根据来自PCM26的变速指令40换档的自动变速器。变速器38的输出轴联接到差速齿轮42的输入。差速齿轮42驱动轴和车轮36。车轮速度传感器44产生表示其相应车轮36的旋转速度的信号。 
[0025]PCM26从踏板位置传感器46接收加速踏板位置信号。PCM26也从巡航或速度控制界面模块48接收设定速度信号。适应性巡航控制传感器50感测在驾驶路径中的车辆或其它障碍,并产生表示到所述障碍的距离的信号。所述信号可以用于调节经由速度控制界面模块48设置的设定速度。 
[0026]现在参见图2A和2B,示出了协调扭矩控制系统100的功能框图。协调扭矩控制系统100可以用PCM26实现。图2A和2B一起示出了完整的功能框图。图2A上的第一连接器标记“A”与图2B上的 第二连接器标记“A”重合。图2A上的第一连接器标记“B”与图2B上的第二连接器标记“B”重合。图2A和2B合并称为图2。 
[0027]协调扭矩控制系统100采用扭矩请求中枢模块102,所述扭矩请求中枢模块102确定推进扭矩需求,并将所述推进扭矩需求传达给推进扭矩控制模块104。扭矩请求中枢模块102基于来自多个扭矩请求模块的输入确定所述推进扭矩需求,如下文更详细所述。扭矩请求模块包括想要影响一个或更多致动器24来影响发动机扭矩的模块。推进扭矩需求表示为了满足扭矩请求模块的需要使得它们可以实现其相应控制策略而需要的来自发动机22的扭矩。 
[0028]推进扭矩控制模块104基于净推进扭矩需求控制一个或更多的致动器24-1,...,24-M,即致动器24。致动器24影响发动机扭矩。致动器24的示例包括点火模块,所述点火模块以规定的点火正时传送点火火花给发动机;燃料喷射模块,所述燃料喷射模块在规正时间传送规定量的燃料给发动机;电子节气门控制模块,所述电子节气门控制模块将节流阀移动至规定开度;和类似物。 
[0029]每个扭矩请求模块分类为车轴扭矩请求模块或推进扭矩请求模块。车轴扭矩请求模块通过道路表面控制车辆速度和车辆牵引中的至少一个。推进扭矩请求模块控制发动机和电动机32的输出扭矩。车轴扭矩请求模块在图2A中示出且现在将更详细地描述。 
[0030]踏板位置信号108表示由车辆操作者请求的车辆加速度。踏板位置信号108由踏板位置传感器46产生。驾驶者扭矩请求模块200基于踏板位置信号108产生驾驶者扭矩请求。驾驶者扭矩请求表示根据踏板位置信号108、发动机转速信号28、和车辆速度信号44中的至少一个使车辆加速所需要的车轴扭矩。 
[0031]巡航控制扭矩请求模块202产生巡航控制扭矩请求。巡航控制扭矩请求表示将车辆保持在经由界面模块48指示的设定速度所需要的车轴扭矩。适应性巡航控制扭矩请求模块204可以与巡航控制扭矩请求模块202通信,以基于车辆周围环境修正巡航控制扭矩请求。例如,当巡航控制起用时,适应性巡航控制扭矩请求模块204可以请求降低车轴扭矩,从而车辆减速和/或在第二车辆之后至少保持最小的车距。实际车距可以由来自适应性巡航控制传感器50的信号指示。
[0032]其它车轴扭矩请求模块由车轴扭矩请求模块300-1,...,300-J(合并称为车轴扭矩请求模块300)表示。车轴扭矩请求模块300的第一示例为牵引/拖拽控制模块。所述牵引/拖拽控制模块确定控制正车轮滑移和负车轮滑移所需要的车轴扭矩变化。正车轮滑移指的是在加速期间由于过多的动力系扭矩引起的车辆轮胎和道路表面之间的滑移。负车轮滑移指的是在减速期间由于过多的制动车轴扭矩引起的车辆轮胎和道路表面之间的滑移。所述滑移可以基于来自车轮速度传感器44的信号检测。 
[0033]车轴扭矩请求模块300的第二示例为车辆过速保护模块。车辆过速保护模块确定最大车轴扭矩限制,以保持车辆速度低于预定速度限制。 
[0034]车轴扭矩请求模块300的第三示例为制动扭矩管理模块。制动扭矩管理模块确定在车辆制动器施用时的最大车轴扭矩。最大车轴扭矩防止车轴扭矩超过车辆制动器的制动扭矩。 
[0035]车轴扭矩请求模块300的第四示例为稳定性控制模块。稳定性控制模块基于车辆的横摆率产生车轴扭矩请求。稳定性控制模块可包含在电子稳定性控制系统中,如General Motors出售的StabiliTrak system。 
[0036]扭矩控制中枢模块102包括车轴扭矩仲裁模块302,所述车轴扭矩仲裁模块302从驾驶者扭矩请求模块200、巡航控制扭矩请求模块202、车轴扭矩请求模块300和扭矩切断控制模块306(如图2B所示)接收各种扭矩请求和/或限制。扭矩切断控制模块306在下文进一步描述。车轴扭矩仲裁模块302基于扭矩请求和/或限制产生净车轴扭矩请求,并将净车轴扭矩请求传达给车轴至推进扭矩转换模块304。车轴至推进扭矩转换模块304基于车轴差速齿轮42的传动比、车轮36的直径、变速器38的传动比和扭矩转换器增益中的至少一个将净车轴扭矩请求转换为相应的推进扭矩请求。车轴扭矩仲裁模块302将所述相应推进扭矩请求传达给包含在扭矩控制中枢102中的推进扭矩仲裁模块308。 
[0037]现在将转到对图2B所示的各种推进扭矩请求模块的讨论。防止失速模块402确定保持发动机22运行需要的最小扭矩。防止失速模块402可以基于来自发动机起动和停止模块404和发动机容量 保护模块406中的至少一个的输入增加最小扭矩。发动机起动和停止模块404基于发动机是否为新的或新鲜发动机而增加最小扭矩请求。当车辆第一次组装时,新鲜发动机需要更大的燃料喷射脉冲宽度,以从燃料系统驱走空气。为了补偿增加的燃料喷射脉冲宽度,发动机起动和停止模块404也与推进扭矩控制模块104通信,从而它可以延迟点火正时并不管增加的燃料喷射脉冲宽度而保持发动机扭矩恒定。发动机容量保护模块406基于动力系20的机械限制提供发动机22的最大扭矩限制。限制的示例包括变速器38的最大扭矩限制、催化剂30的最大温度限制、等等。 
[0038]推进扭矩仲裁模块308也从一个或更多的其它推进扭矩请求模块500-1,...,500-K(合并称为推进扭矩请求模块500)接收推进扭矩请求。推进扭矩请求模块500的示例包括变速器扭矩请求模块,所述变速器扭矩请求模块在变速器换档期间产生扭矩请求以降低发动机扭矩。其它推进扭矩请求模块500可以包括发动机过速保护模块和发动机怠速速度控制模块中的至少一个。发动机过速保护模块确定推进扭矩限制,以防止发动机转速或RPM超过预定发动机转速。发动机转速可以基于来自曲轴位置传感器28的信号确定。发动机怠速速度控制模块确定在变速器38处于驱动或空档的滑行或怠速期间保持发动机22处于预定怠速速度所需要的推进扭矩。 
[0039]推进扭矩仲裁模块308也从一个或更多的储备扭矩请求模块502-1,...,502-N(合并称为储备扭矩请求模块502)接收储备扭矩请求。储备扭矩指的是发动机22未来需要的扭矩。储备扭矩请求模块502的第一示例是空调压缩机扭矩补偿模块。空调压缩机扭矩补偿模块请求储备扭矩,从而在压缩机31接合和脱离时发动机转速保持大体恒定。 
[0040]储备扭矩请求模块502的第二示例是催化剂点火模块。当发动机冷起动时,催化剂点火模块请求发动机火花延迟以增加排气气体温度,从而加热催化剂30至其转换温度。为了补偿由延迟的火花引起的扭矩损失,催化剂点火模块也可以请求在火花延迟时增加节气门开度。 
[0041]储备扭矩请求模块502的第三示例是侵入诊断模块。侵入诊断,如怠速催化剂监测,需要改变发动机空气/燃料比以进行诊断 模块。因而侵入诊断模块请求储备扭矩以补偿将要进行的诊断程序的扭矩效果。 
[0042]在一些情况下,需要借助于即刻地切断发动机的燃料和/或火花而使推进扭矩最小化。扭矩切断模块306对这些情况产生扭矩请求,这可以包括离合器燃料切断和减速燃料切断中的至少一个。离合器燃料切断在车辆配备有手动变速器且车辆操作者脱离离合器时发生。离合器燃料切断防止在离合器脱离并从发动机移去载荷时发动机转速突增超过预定转速。减速燃料切断在车辆滑行超过预定速度时发生。减速燃料切断有助于增加发动机制动。减速燃料切断也传达给车轴扭矩仲裁模块302。 
[0043]推进扭矩仲裁模块308基于来自各种推进扭矩请求模块和车轴扭矩仲裁模块的扭矩请求和/或限制产生总体请求的推进扭矩。推进扭矩仲裁模块308将所述总体请求的推进扭矩传达给推进扭矩控制模块104。 
[0044]扭矩控制中枢102也可以配置为与混合动力电动车辆一起使用。混合动力电动车辆包括协作推进车辆的发动机22和电动机32。在混合动力电动车辆中,来自车轴扭矩仲裁模块302的总车轴扭矩请求传达给混合动力控制模块700。混合动力控制模块700确定多少推进扭矩由电动机32提供,多少由发动机22提供。混合动力控制模块700将发动机的推进扭矩份额传达给推进扭矩仲裁模块308。电动机的推进扭矩份额经由扭矩指令34传达给电动机32。车轴至推进扭矩转换模块304可以与混合动力控制模块700结合。同样,扭矩切断模块306将减速燃料切断扭矩请求传达给混合动力控制模块700而不是车轴扭矩仲裁模块302。 
[0045]现在,本领域技术人员从前述说明可以理解,本披露的广泛教示可以以不同形式实施。因而,虽然本披露包括具体示例,本但是披露的真实范围不应如此限定,因为本领域技术人员在研读附图、说明书和以下权利要求书之后,其它变型将显而易见。

Claims (24)

1.一种用于车辆的动力系控制系统,包括:
多个车轴扭矩请求模块,所述多个车轴扭矩请求模块根据车辆的相应性能标准产生相应的车轴扭矩请求;
车轴扭矩仲裁模块,所述车轴扭矩仲裁模块基于多个所述车轴扭矩请求产生净车轴扭矩请求;
多个推进扭矩请求模块,所述多个推进扭矩请求模块基于车辆发动机的相应性能标准产生相应的推进扭矩请求;
推进扭矩仲裁模块,所述推进扭矩仲裁模块基于所述净车轴扭矩请求和多个所述推进扭矩请求确定净发动机扭矩请求;和
推进扭矩控制模块,所述推进扭矩控制模块基于所述净发动机扭矩请求控制多个致动器,使得发动机根据所述净发动机扭矩请求产生输出扭矩。
2.根据权利要求1所述的动力系控制系统,其特征在于还包括车轴至推进扭矩转换模块,所述车轴至推进扭矩转换模块基于车轴传动比、轮胎直径和变速器传动比中的至少一个将所述净车轴扭矩请求转换为推进扭矩请求。
3.根据权利要求1所述的动力系控制系统,其特征在于,所述多个车轴扭矩请求模块包括巡航控制扭矩请求模块,所述巡航控制扭矩请求模块基于车辆的巡航控制设定速度产生所述车轴扭矩请求中的一个。
4.根据权利要求3所述的动力系控制系统,其特征在于还包括适应性巡航控制扭矩请求模块,所述适应性巡航控制扭矩请求模块基于车辆环境将车轴扭矩校正值传达给所述巡航控制扭矩请求模块。
5.根据权利要求1所述的动力系控制系统,其特征在于,所述多个车轴扭矩请求模块包括牵引/拖拽控制模块,所述牵引/拖拽控制模块基于车辆轮胎和道路表面之间的滑移产生所述车轴扭矩请求中的一个。
6.根据权利要求1所述的动力系控制系统,其特征在于,所述多个车轴扭矩请求模块包括车辆过速保护模块,所述车辆过速保护模块基于车辆的预定速度限制产生所述车轴扭矩请求中的一个。
7.根据权利要求1所述的动力系控制系统,其特征在于,所述多个车轴扭矩请求模块包括制动扭矩管理模块和稳定性控制模块中的至少一个,所述制动扭矩管理模块基于车辆制动器提供的制动扭矩产生所述车轴扭矩请求中的一个,所述稳定性控制模块基于车辆的横摆率产生所述车轴扭矩请求中的一个。
8.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括防止失速模块,所述防止失速模块基于保持发动机运行所需要的最小扭矩产生所述推进扭矩请求中的一个。
9.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括发动机起动和停止模块,所述发动机起动和停止模块基于发动机是否为新的发动机产生所述推进扭矩请求中的一个。
10.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括发动机容量保护模块,所述发动机容量保护模块基于预定催化剂温度限制产生所述推进扭矩请求中的一个。
11.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括变速器扭矩请求模块,所述变速器扭矩请求模块基于变速器换档产生所述推进扭矩请求中的一个。
12.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括发动机过速保护模块,所述发动机过速保护模块基于预定最大发动机RPM产生所述推进扭矩请求中的一个。
13.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括发动机怠速速度控制,所述发动机怠速速度控制基于发动机的希望怠速速度产生所述推进扭矩请求中的一个。
14.根据权利要求1所述的动力系控制系统,其特征在于,所述多个推进扭矩请求模块包括储备扭矩请求模块,所述储备扭矩请求模块基于为补偿发动机上即将发生的负载变化发动机所需要的扭矩而产生相应的推进扭矩请求。
15.根据权利要求14所述的动力系控制系统,其特征在于,所述储备扭矩请求模块包括空调压缩机扭矩补偿模块,所述空调压缩机扭矩补偿模块基于为补偿由于空调压缩机离合器接合和脱离引起的即将发生的负载变化发动机所需要的扭矩而产生相应的推进扭矩请求。
16.根据权利要求14所述的动力系控制系统,其特征在于,所述储备扭矩请求模块包括催化剂点火模块,所述催化剂点火模块产生相应的推进扭矩请求以改变发动机的排气气体温度。
17.根据权利要求1所述的动力系控制系统,其特征在于,所述车辆是汽油/电动混合动力车辆,所述动力系控制系统还包括混合动力控制模块,所述混合动力控制模块确定所述净车轴扭矩请求中多少扭矩由电动机提供。
18.一种操作车辆的动力系控制系统的方法,所述方法包括:
基于车辆的相应性能标准产生车轴扭矩请求;
基于所述车轴扭矩请求产生净车轴扭矩请求;
基于车辆发动机的相应性能标准产生推进扭矩请求;
基于所述净车轴扭矩请求和所述推进扭矩请求确定净发动机扭矩请求;和
基于所述净发动机扭矩请求控制多个致动器,使得发动机根据所述净发动机扭矩请求产生输出扭矩。
19.根据权利要求18所述的方法,其特征在于还包括基于车轴传动比、轮胎直径、变速器传动比和变矩器增益中的至少一个将所述净车轴扭矩请求转换为推进扭矩请求。
20.根据权利要求18所述的方法,其特征在于,所述推进扭矩请求中的一个基于预定催化剂温度限制。
21.根据权利要求18所述的方法,其特征在于,所述推进扭矩请求中的一个基于变速器换档。
22.根据权利要求18所述的方法,其特征在于,所述推进扭矩请求中的一个基于预定最大发动机RPM。
23.根据权利要求18所述的方法,其特征在于,所述推进扭矩请求中的一个基于为补偿发动机上即将发生的负载变化发动机所需要的扭矩。
24.根据权利要求18所述的方法,其特征在于,所述方法包括确定所述净车轴扭矩请求中多少扭矩由电动机提供。
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CN101450629A (zh) 2009-06-10

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