CN100575754C - 控制动力系统的方法、产品和用于动力系统的控制系统 - Google Patents

控制动力系统的方法、产品和用于动力系统的控制系统 Download PDF

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CN100575754C
CN100575754C CN200710104566A CN200710104566A CN100575754C CN 100575754 C CN100575754 C CN 100575754C CN 200710104566 A CN200710104566 A CN 200710104566A CN 200710104566 A CN200710104566 A CN 200710104566A CN 100575754 C CN100575754 C CN 100575754C
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pump
main
pressure
control
hydraulic
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CN101082376A (zh
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J·-J·F·萨
B·R·斯奈德
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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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
    • B60W20/30—Control strategies involving selection of transmission gear ratio
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K6/00—Arrangement 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
    • B60K6/20—Arrangement 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
    • B60K6/22—Arrangement 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 apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement 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 apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement 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 apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K6/00—Arrangement 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
    • B60K6/20—Arrangement 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
    • B60K6/22—Arrangement 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 apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement 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 apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K6/00—Arrangement 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
    • B60K6/20—Arrangement 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
    • B60K6/42—Arrangement 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
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K6/00—Arrangement 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
    • B60K6/20—Arrangement 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B60W10/115—Stepped gearings with planetary gears
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
    • F16H3/728—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path with means to change ratio in the mechanical gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • F16H61/0031—Supply of control fluid; Pumps therefore using auxiliary pumps, e.g. pump driven by a different power source than the engine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
    • B60W2555/20—Ambient conditions, e.g. wind or rain
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H—GEARING
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    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/10—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts
    • F16H2037/102—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts the input or output shaft of the transmission is connected or connectable to two or more differentials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/10—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts
    • F16H2037/105—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts characterised by number of modes or ranges, e.g. for compound gearing
    • F16H2037/106—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts characterised by number of modes or ranges, e.g. for compound gearing with switching means to provide two variator modes or ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/201—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with three sets of orbital gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2043—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with five engaging means
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Transmission Device (AREA)
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Abstract

本发明包括一用于控制动力系统的方法，产品，和控制系统，该动力系统具有主液压泵和辅助液压泵，每个泵都可操作来提供液压流体至变速器的液压回路。其包括确定一主要压力和一期望主要压力，并控制所述辅助液压泵。确定液压回路中的主要压力包括估计液压力。所述辅助泵被控制至一工作速度。来自所述辅助泵和主泵的流量控制可以包括一专用的‘异或’流量，或一混合流量。

Description

控制动力系统的方法、产品和用于动力系统的控制系统
技术领域
本发明属于机电式变速器装置，进一步地属于用于变速器装置液压系统的控制系统。
背景技术
一机电式变速装置可用作混合动力系统的一个元件以控制来自扭矩产生装置且输出到驱动系统的扭矩和速度。所述扭矩产生装置通常包括内燃机和电机。一个混合动力系统结构包括一双模式复合分配机电式变速器，该变速器操作来接收来自扭矩产生装置的扭矩输入。扭矩输入至获得一输出的量包括选择性地促动变速器中的扭矩转换装置，或离合器。每个离合器的促动通过来自液压回路的液压力选择性地实现。经过液压回路的加压流体通常由液压泵供应，所述液压泵由来自发动机的输入轴驱动。
使用混合动力系统的车辆在一定情况下选择性地关闭内燃机以减少燃料消耗并改善燃油经济性，例如在车辆遇到红灯停止，或滑行时。在这种情况下，所述发动机驱动的液压泵是不起作用的且不能维持液压回路中的流体压力。由于液压力的下降，当前的扭矩传递离合器可能被停用。工程师通过使用一电动泵辅助液压泵已经解决了在发动机停止期间液压力降低的问题，该辅助液压泵可操作来提供至扭矩传递离合器的压力。
需要一控制系统来操作电动泵辅助液压泵，以管理泵的电能消耗并控制用于车辆操作的扭矩分配离合器的液压力。
发明内容
因此，根据本发明的一实施例，提供一种控制动力系统的方法和产品，该动力系统包括一发动机，该发动机可操作地连接至一变速器，所述变速器具有一主液压泵和一辅助液压泵，每个泵都可操作来为变速器的液压回路提供液压流体。所述方法包括确定液压回路的主要压力和期望主要压力，并基于所述主要压力，所述期望主要压力和至主泵的输入控制所述辅助泵的操作。确定液压回路中的主要压力优选包括基于发动机的速度和辅助液压泵的速度估计变速器液压回路中的液压力。
本发明的一方面包括确定一液压回路中的期望主要压力，这包括确定发动机的操作状态，监测液压流体的温度，确定用于变速器扭矩传递离合器的期望压力，基于上述参数产生一用于期望主要压力的参数值。
本发明的另一方面包括一用于动力系统的控制系统，该动力系统包括发动机，该发动机可操作地连接至变速器，所述变速器具有主液压泵和辅助液压泵，每个泵都可操作来选择性地为变速器液压回路提供加压流体。控制系统包括可操作来执行控制方案的分布式控制模块系统，该控制方案可操作来确定液压回路中的压力，确定液压回路中的期望压力，和，基于所述液压力，期望液压力，和至主泵的控制输入来控制辅助液压泵的操作。所述变速器包括具有四个扭矩分配离合器的双模复合分配式的机电变速器。所述控制系统可操作来选择性地促动所述四个扭矩分配离合器进而选择性地以四个固定档和两电子可变的模式操作所述变速器。主液压泵的原动力来自源于发动机的一输入轴。所述辅助泵包括一电动泵，该泵可操作来通过分布式控制模块系统接收动力。
在阅读和理解实施例的详细说明的基础上，本发明的这些和其他方面对本领域技术人员来说将变得更加明显。
附图说明
本发明可以以各种部件和部件布置的形式体现，下面将结合构成说明书一部分的附图对具体实施例进行详细地说明，其中：
图1是根据本发明的示例性动力系统的示意图；
图2是根据本发明的示例性控制结构和动力系统的示意图；
图3是根据本发明的所述示例性控制结构和动力系统的一方面的示意图；图4是根据本发明的算法流程图，以及
图5，6，和7是根据本发明的数据曲线图。
具体实施方式
参见附图，其中所述说明只是为了说明本发明而不是为了限制本发明，图1和2说明了根据本发明一实施例的系统，该系统包括发动机14，变速器10，控制系统，和传动系统。
示例性变速器10的机械方面已经在美国专利号No.6,953,409，题为“具有四个固定传动比的双模式复合分配模式的混合型机电变速器”的文献中进行了详细的说明，在此引用作为参考。体现了本发明方案的所述示例性的双模式复合分配模式的机电变速器如图1所示。所述本变速器10具有一优选直接地由发动机14驱动的输入轴12。一瞬时扭矩矩减振器20位于发动机14的输出轴18和变速器10的输入元件12之间。所述瞬时扭矩减振器20优选包括扭矩分配装置77和一弹簧，扭矩分配装置77具有阻尼机构的特性。所述瞬时扭矩减振器20允许选择性的将发动机14与变速器10结合。所述扭矩分配装置77不是用来改变，或控制，所述变速器10的操作模式。所述扭矩分配装置77优选包括一液压操作的摩擦离合器，也就是离合器C5。
所述发动机14可以是任何形式的内燃机中的一种，例如火花点火式发动机或压燃式发动机，发动机14适合于在从空转，处于或大约处于600转/分(RPM)，到超过6,000RPM的速度范围提供至变速器10的扭矩输出。无论发动机14用何种装置连接到变速器10的输入元件12，输入元件12连接至变速器10中的行星齿轮组24。
现参见图1，所述变速器10应用三个行星齿轮组24，26和28。第一行星齿轮组24具有一外圈齿轮元件30，外圈齿轮元件30限定一内侧的，或中心齿轮元件32。多个行星齿轮元件34可旋转地安装在保持架36上这样每个行星齿轮元件34可以与外齿轮元件30和内齿轮元件32啮合。行星齿轮组24与辅助齿轮82啮合，辅助齿轮82与齿轮84啮合，齿轮84驱动轴86，轴86可操作地连接至液压泵88。液压泵88是一公知的装置，优选为在足够的满足系统需求的压力/流量下给变速器的液压回路供给液压流体，系统需求包括用于离合器促动的压力水平，和满足系统冷却和润滑需要的足够的流量。示例性液压回路的更多细节将参考图3在下文中描述。
第二行星齿轮组26具有一外圈齿轮元件38，外圈齿轮元件38限定一内侧的中心齿轮元件40。多个行星齿轮元件42可旋转地安装在保持架44上这样每个行星齿轮42可以与外齿轮元件38和内齿轮元件40啮合。
第三行星齿轮组28具有一外圈齿轮元件46，外圈齿轮元件46限定一内侧的中心齿轮元件48。多个行星齿轮元件50可旋转地安装在保持架52上这样每个行星齿轮50可以与外齿轮元件46和内齿轮元件48啮合。
三个行星齿轮组24，26和28每个都包含简单的行星齿轮组。进一步说，第一和第二行星齿轮组24和26是复合的因为第一行星齿轮组24的内齿轮元件32通过一毂衬齿轮54连接至第二行星齿轮组26的外齿轮元件38。所述结合的第一行星齿轮组24的内齿轮元件32和第二行星齿轮组26的外齿轮元件38连接到第一电机，第一电机包括一电动/发电机56，即MG-A。
行星齿轮组24和26是深度混合的因为第一行星齿轮组24的保持架36是通过轴60连接至第二行星齿轮组26的保持架44。因而，第一和第二行星齿轮组24和26的各自保持架36和44被连接。轴60还选择性地通过扭矩分配装置，或离合器C2 62连接到第三行星齿轮组28的保持架52。第三行星齿轮组28的保持架52直接连接到变速器输出元件64。
在这里所述的实施例中，其中变速器10用于一陆地车辆，输出元件64可操作地连接到一传动系统，所述传动系统包括传动箱90或其他的扭矩分配装置，所述扭矩分配装置提供至一个或多个车轴92或半轴(未显示)的扭矩输出。所述轴92，接着，作用于驱动元件96。所述驱动元件96可以是车辆使用的前轮或后轮，或者是履带式车辆的驱动齿轮。所述驱动元件96可以具有与其相关的某种形式的车轮制动器94。
第二行星齿轮组26的内齿轮元件40通过筒形轴66连接到第三行星齿轮组28的内齿轮元件48，筒形轴66在轴60的外面。第三行星齿轮组28的外齿轮元件46选择性地通过扭矩分配装置或离合器Cl 70连接到机架，机架由变速箱壳68表示。所述筒形轴66还连接到第二电机，第二电机包括一电动/发电机72，也就是MG-B。
扭矩分配装置或离合器C3 73选择性地将太阳轮40连接到机架，也就是，变速箱壳体68。扭矩分配装置或离合器C4 75通过选择性地连接太阳轮40与保持架44可操作为锁止离合器，将行星齿轮组24，26，发电机56，72以及输入锁为一整体旋转。扭矩分配装置C2 62，Cl 70，C373，和C4 75都优选为液压促动摩擦离合器。
变速器10接收来自扭矩产生装置的输入驱动扭矩，扭矩产生装置包括发动机14和发电机56和72，驱动扭矩是燃料或保存在电能存储装置ESD74中的电能能量转换的结果。
所述ESD74是通过直流线路或导体27直流耦合至变速器功率变换器模块(TPIM)19的高压。所述TPIM19是控制系统的一个元件，下面将结合附图2描述控制系统。所述TPIM19通过导体29和第一发电机连接，TPIM19同样地通过导体31与第二发电机72连接。根据ESD74是否处于充电或放电状态，电流流至或流出ESD74。TPIM19包括一对功率变换器和各自的电机控制模块用来接收电机控制命令和控制转化状态借此提供电机驱动或能量再生功能。
在电机控制中，各个电流换向器接收来自直流线路的电流并通过导体29和31给各个电机，也就是，MG-A和MG-B提供交流电流。在再生控制中，各自的电流换向器通过29和31接收来自电机的交流电流并向直流线路27提供电流。所述提供到或来自所述电流换向器的净余的直流电决定了电能存储装置74的工作状况是充电还是放电。优选，MG-A56和MG-B72是三相的交流电机，所述电流换向器包括互补的三相的大功率电子学设备。
参见图2，显示了所述控制系统的示意的方框图，所述控制系统包括分布式控制模块结构。下述元件包括全部的车辆控制结构的一子集，并可操作来提供并列的下述动力系统的系统控制。所述控制系统可操作来综合处理相关的信息和输入并执行算法以控制各种致动器从而获得控制目标，所述控制目标包括这样的参数，例如燃油经济性，排放，性能，驾驶性能和硬件的保护，所述硬件包括ESD74的电池和MG-A以及MG-B56，72。所述分布式控制模块结构包括发动机控制模块(′ECM′)23，变速器控制模块(′TCM′)17，电池组控制模块(′BPCM′)21，和变速器功率变换器模块(′TPIM′)19。一混合动力控制模块(′HCP′)5提供上述模块间的控制和协调。具有一用户界面(′UI)13，用户界面13可操作地连接到多个装置，通过这些装置车辆操作者控制或直接操作包括变速器10在内的动力系统。示例性车辆操作者对用户界面13的输入包括加速踏板，制动踏板，变速器档位选择器，和，车辆速度巡航控制。上述的每个控制模块都通过一局域网(′LAN′)总线6与其他模块和致动器连接。所述局域网总线6允许各种控制模块间的控制参数和命令的传送。
所述HCP5提供所述混合动力系统的综合控制，所述动力系统提供ECM23，TCM17，TPIM19，和BPCM21的并列操作。基于来自用户界面13和包括电池组在内的动力系统的各种输入信号，所述HCP5产生各种命令，包括：发动机转矩命令，用于变速器10的各个离合器Cl，C2，C3，C4的离合器扭矩命令；和分别用于MG-A和MG-B的电机转矩命令。所述HCP基于运转情况，电池状况，和通过用户界面13输入的用户对扭矩的需求决定何时启动和停止内燃机14。
所述ECM23可操作地连接到发动机14，并通过总体表示为集合线35的多个分散的线路起到从各种传感器获得数据并分别控制多个致动器和发动机14的作用。为简单起见，ECM23通常具有通过集合线35与发动机14连接的双向接口。通过ECM23获得的各种其他的参数包括发动机冷却剂的温度，发动机输入速度，Ni，至轴12通往变速器，进气歧管压力，环境气温和环境压力。由ECM23控制的各种致动器包括燃料喷射器，点火模块，和节气门控制模块。ECM23对发动机的操作包括能够在车辆正在进行的操作期间停止和启动发动机。所述ECM23优选接收来自HCP5的命令启动和停止所述发动机。
所述TCM17可操作地连接到变速器10并起到从各种传感器获得数据以及提供至变速器的控制信号的作用。从所述HCP5到所述TCM的输出包括用于每个离合器Cl，C2，C3，和，C4的促动或不启动和输出轴64的转速，No，的控制。所述TCM可操作来监测在变速器液压回路中的各种压力传感器(未显示)，并产生和执行用于控制液压回路中各种压力控制螺线管和流量电磁阀的控制信号。
所述BPCM21信号连接至一个或多个传感器，传感器可操作来监测ESD74的电流或电压参数以提供有关电池状态的信息给所述HCP5。这样的信息包括电池的状态充电，电池组电压和可利用的电能。
所述变速器功率变换器模块(TPIM)19包括一对功率变换器和电动机控制模块，电机控制模块配置成接收电机控制命令并控制电流换向器的状态借此提供电机驱动或再生的功能。所述TPIM19可操作来基于来自所述HCP5的输入产生用于MG-A56andMG-B72的扭矩命令，HCP5由操作者通过用户界面13的输入和系统工作参数驱动。所述用于MG-A和MG-B的电机转矩命令通过包括TPIM19的控制系统执行，以控制MG-A和MG-B。MG-A和MG-B各自的电机转速信号分别通过TPIM19从电机的相位信息或传统的转动传感器导出。所述TPIM19确定且与所述HCP5交流电机转速。电能存储装置74是通过直流线路27直流耦合至所述TPIM19的高电压。根据所述ESD74是否正在充电或放电电流向或从所述TPIM19转移。TPIM19确定并与所述HCP5交流MG-A和MG-B的工作温度，优选地利用车载温度传感器(未显示)。所述TPIM19可操作地与辅助油泵110的控制装置，也就是TAOP130连接在一起。
上述的每个控制模块优选为一通用数字计算机，所述通用数字计算机通常包括微处理器或中央处理器，存储介质，高速时钟，模拟-数字(A/D)和数字-模拟(D/A)电路，和输入/输出电路与器件(I/O)以及适当的信号调节和缓冲电路，存储介质包括只读存储器(ROM)，随机存取存储器(RAM)，电可编程序只读存储器(EPROM)。每个控制模块具有一组控制算法，包括保存在只读存储器中并执行来提供每个计算机各自起作用的常驻程序指令和校准。在各种计算机之间的信息传递优选利用上述的局域网6完成。
在每一控制模块中用于控制和状态估计的算法通常在预定循环过程中被执行，这样每个算法在每个循环周期中至少被执行一次。保存在非易失性存储器装置中的算法由一个中央处理器执行并可操作来监测来自传感器的输入以及执行控制和诊断程序进而利用预置校准控制各个装置的操作。通常每隔一段时间执行一次循环，例如在发动机和车辆操作正在进行期间每3.125，6.25，12.5，25和100毫秒执行一次循环。可选择地，算法可能响应于一事件的发生而被执行。
响应于操作者的动作，也就是通过用户界面13获得的，所述监控HCP控制模块5和一个或多个其他控制模块确定轴64上需求的变速器输出转矩。可选择地被操作的变速器10的部件被适当地控制和操作以响应于操作者的需求。例如，在图1和2所示的示例性实施例中，当操作者已经选择一前进驱动档并操作加速踏板或制动踏板时，所述HCP5确定用于变速器的输出转矩，该输出转矩实现车辆如何以及何时加速或减速。最后的车辆加速作用受其他因素的影响，包括，例如，道路阻力，道路坡度，以及车辆质量。所述HCP5监测扭矩产生装置的状态参数，并确定达到理想扭矩输出所需的变速器的输出。在HCP5的控制下，变速器10在一从慢到快的输出速度范围内运行以便符合操作者的需求。
所述双模式复合分配的机电变速器，包括输出元件64，输出元件64通过变速器10内两套不同的传动机构接收输出功率，并操作为各种变速器工作方式，下面结合图1和表1进行说明。
表1
Figure C20071010456600121
在表格中描述的各种变速器操作模式指出了那个具体的离合器Cl，C2，C3，C4为每一种操作模式被结合或促动。另外，在各种变速器操作模式中，MG-A和MG-B的每一个都可以操作为电动机以产生驱动扭矩，或操作为发电机以产生电能。当所述扭矩分配装置70为了将第三行星齿轮组28的外齿轮元件46与机架固定而被促动时，一第一连续可变模式，或传动机构被选择。当离合器Cl 70被释放且离合器C2 62被同时地促动以将轴60连接至第三行星齿轮组28的保持架52时，第二连续变速模式或传动机构被选中。当MG-A和MG-B56，72作为电机和发电机时，超出本发明范围的其他因素发生影响，且不在此论述。
所述控制系统，主要如图2所示，在每个运行模式中是可操作来提供从相对慢到相对快的大范围的轴64的变速器输出转速，No。在每个模式中双向模式与慢至快的输出速度范围的结合允许变速器10从静止状态至高速推进推动所述车辆，并满足上述的各种其他的需求。另外，控制系统并列操作变速器10以便允许在上述模式之间同步换档。
现参见图3-7，现在描述所述示例性动力系统和控制系统的操作，包括用于控制主要液压泵88和辅助液压泵的方法和系统，每个泵可操作来给变速器的液压回路提供液压流体。所述方法包括确定一在液压回路中的主要压力和确定一在所述液压回路中的理想主要压力。辅助液压泵的操作基于所述主要压力，所述理想主要压力，和至主泵的输入被控制。现在进行详细论述。
参见图3，显示了一示意图，该示意图提供了用于控制示例性变速器中液压流体流动的示例性控制系统的详细说明，该说明包括主要液压泵88和辅助液压泵110的操作。如上结合图1所述，所述主要液压泵88由齿轮82和84驱动，齿轮82和84可操作地从来自发动机10的输入轴上脱离。所述主要液压泵88接收来自发动机的输入扭矩并最初通过调节阀140从油箱中输出液压流体至变速器的液压回路。所述辅助泵110可操作地由TAOP130控制，TAOP130由TPIM19控制。辅助泵110优选包括一适当大小和容量的电动泵以在操作时向液压系统提供足够流量的加压液压流体。所述TPIM优选产生一固定频率的脉冲宽度调制信号和一工作循环，所述工作循环可以依靠所述泵的理想输出在低位值和高位值之间变化。所述泵110接收所述信号并从油箱中吸取液压流体输出到所述液压回路，所述液压回路流向调节阀140，140′。
所述控制阀包括第一实施例140和第二实施例140′中的任何一个，第一实施例140被认为是一异-或逻辑(XOR)方案，第二实施例140′被认为是混合方案。在第一，异或实施例中，依靠来自每个泵的压力和流量，调节阀140被机械化以通过允许加压流体至变速器液压回路的流动控制来自辅助泵和主泵的液压流体的流量，所述液压流体流量实质上单独地从辅助泵或者主泵流出。在第二，混合实施例，所述调节阀140′被构造成混合从辅助泵和主泵流至变速器液压回路的加压流体的流量，优选地当来自所述泵的压力和流量具有足够克服位于调节阀140′内部的阀和弹簧的压力时。流量控制阀实施例中流量控制阀的具体设计细节和选择超出了本发明的范围。所述异-或逻辑(′XOR′)方案优选与后轮驱动车辆的动力系统一起使用。所述混合方案优选与前轮驱动式车辆的动力系统一起使用。
不管实施例中应用什么样的控制阀，流入变速器的液压回路142的加压液压流体，可分配至一系列装置，包括离合器Cl 70，C2 62，C3 73，和C4 75，用于机器MG-A和MG-B的冷却回路，以及用于冷却和润滑变速器10的回路。流至上述每个装置和回路的液压流体的流量通过选择性地促动压力控制螺线管和流动电磁阀实现，压力控制螺线管和流动电磁阀位于液压回路142内，并由TCM17控制。
参见图4，显示了一用于控制至辅助泵110的命令的控制原理图200，优选地作为一个或多个算法和预置校准值被所述TPIM执行。在所述控制原理图中，用于发动机转速的参数，NI，和辅助泵速度参数，Nx，被输入至液压模型(块210)。所述液压模型包括一公知的数学模型，该数学模型被执行来为具体的液压系统确定一用于变速器液压系统中的主要液压力的一估计的参数值。换句话说，液压力可以利用公知的压力传感器直接地测量。所述直接地估计或测量的主要的液压力，被输入主要压力控制模块(块220)。至主要压力控制模块的其他输入包括：发动机起/停状态，起/停状态表明了所述内燃机处于工作状态或停止状态；理想的离合器压力，离合器压力由离合器转矩容许载荷和选择的指令驱动，所述选择指令用于促动变速器离合器，即：C1，C2，C3，和C4；用于冷却电机MG-A和MG-B56和72的命令，优选为由测量到的工作温度驱动；和，变速器冷却和润滑的需要。主要压力控制模块的目的在于产生一用于理想主要压力，也就是P_desired的参数值。本领域技术人员可以设计一个方案，该方案作为一个算法被执行来基于具体的变速器应用和具体的工作特性计算用于理想主要压力的参数值。所述期望主要压力被用作至泵控制模块(块230)的一个输入。
泵控制模块利用发动机转速Ni，期望的主要压力，P_desired，和所述估计的主要压力，P_main_pump，基于实施例中利用的控制阀，也就是异或阀140或混合阀140’，来计算一用于辅助液压泵操作的命令，所述阀的操作在下文中描述。
参见图5，6，和7所示的图表，示例性系统的操作结合附图1，2，3已经进行了详细的描述，其中图4中的控制方案被执行。参见图5所示的图表，描述了当发动机输入速度Ni，降低而期望压力，P_desired保持一恒定值，例如当发动机14关闭而车辆继续在操作在发动机停止-启动的状态时的示例性系统的相关操作。这个操作结合一利用异或泵控制阀140的系统进行描述。当所述发动机14是停止时，来自所述主泵的流量，Flow_mam_pump和主要的压力，P_main_pump都减少。当所述主要压力低于一水平，优选为大于期望压力加上一预定压力偏移量时，所述TPIM命令所述TAOP130操作110至一足够获得期望压力，P_desired的工作速度。当来自辅助泵110的压力大于来自主泵的压力时，所述异或控制阀140变换流量，这样在发动机关闭之前加压流体从辅助泵提供到变速器的液压回路142。来自辅助泵110的具体的命令工作速度取决于具体的泵的速度/压力/流量特性，优选校准到所述TPIM。
参见图6所示的图表，描述了示例性系统当发动机输入速度NI，增加而期望压力，P_desired，保持在一恒定值，例如当发动机开启而车辆继续操作，在发动机停止-启动状态又发生时相关的操作。这个操作结合一利用异或泵控制阀140的系统进行描述。当所述发动机14启动时，来自主泵的流量F_main_pump，增加，作为主要压力，P_main_pump。在这个图表开始时，已经确定一用于期望压力，P_desired，的参数值，且辅助泵已经启动，并被控制至一工作速度，如RPM_AUX所示。至变速器的输入速度，NI，为零，表明主泵没有运行，进一步由流速证明，F_main_pump，是零，并且压力，P_main_pump是零。在一时间点，至变速器的输入速度，Ni，开始增加，也就是发动机启动导致的。所述输入速度增加稳定地，同样所述流速，F_main_pump和主泵压力，P_main_pump也增加。在随后的时间点，主泵压力，P_main_pump，达到期望压力，P_desired。当所述主泵压力时，P_main_pump，超过所述期望压力，P_desired，一预定偏移值时，认为主泵能维持系统压力，也就是，满足所述期望压力，P_desired。至辅助泵的控制信号随后关闭。辅助泵关闭的动作，以及来自辅助泵压力的相应降低，导致所述异或控制阀140变换流量至主泵。
参见图7所示的图表，描述了结合图1，2，3进行说明的示例性系统与上述混合控制阀140′的操作，其中图4中的控制方案被执行。在这个图表开始时，已经确定一用于期望压力，P_desired的参数值，并且辅助泵已经启动，且已经命令至一工作速度如RPM_AUX所示，和相应的流量Flow_Aux。至变速器的输入速度，NI，为零，表明主泵没有运行，进一步由流速证明，F_main_pump，是零，并且主泵压力，P_mam_pump是零。如前所述，至变速器的输入速度，Ni，开始增加。所述输入速度稳定地增加，同样所述流速，F_main_pump和主泵压力，P_main_pump也增加。在后来的时间点，通过混合控制阀140′来自主泵的流量由来自辅助泵的流量补充。由于发动机转速，Ni，的增加而导致来自主泵的流量增加时，所述控制方案减少辅助泵的速度和流量。当所述主泵压力时，P_main_pump，超过所述期望压力，P_desired，一预定偏移值时，认为主泵能维持系统压力，也就是，满足所述期望压力，P_desired。所述辅助泵被完全关闭。从此刻开始主泵泵送所有的液压流体流量。
本发明已经结合具体实施例和相应的改进进行了具体的论述。他人可以在阅读和理解说明书的基础上进行进一步地改进和变型。其包括目前为止所有的改进和变型，因为它们落入本发明的范围。

Claims (21)

1.用于控制动力系统的方法，所述动力系统包括一可操作地连接到变速器的发动机，所述变速器具有主液压泵和辅助液压泵，每个泵都可操作来提供至变速器液压回路的液压流体，包括：
确定液压回路中的主要压力；
确定液压回路中的期望主要压力；
基于所述主要压力，所述期望主要压力，和至主泵的输入控制辅助液压泵的操作。
2.如权利要求1所述的方法，其特征在于确定液压回路中的主要压力包括基于发动机的速度和辅助液压泵的速度估计变速器液压回路中的液压力。
3.如权利要求1所述的方法，其中确定液压回路中的期望主要压力包括：
确定发动机的操作状态；
监测液压流体的温度；
确定用于变速器的扭矩传递离合器的期望压力；
以及，基于上述参数产生一用于期望主要压力的参数值。
4.如权利要求3所述的方法，其中确定液压回路中的期望主要压力进一步包括监测可操作地连接到变速器的电机的温度。
5、如权利要求1所述的方法，其中控制辅助泵的操作包括控制所述辅助泵至一工作速度。
6.如权利要求1所述的方法，其中基于主要压力，期望主要压力，和至主泵的输入控制所述辅助液压泵的操作包括当主要压力小于所述期望压力加上一预定偏移量时命令所述辅助泵操作。
7.如权利要求6所述的方法，其中基于主要压力，期望主要压力，和至主泵的输入控制所述辅助液压泵的操作进一步地包括当主要压力大于所述期望压力加上一预定偏移量时停止所述辅助泵操作。
8.如权利要求6所述的方法，其中控制辅助液压泵的操作包括当主要压力实质上小于期望压力加上所述预定偏移量时操作所述辅助泵以补偿主泵的操作。
9.一种产品，包括其中具有计算机程序编码的存储介质，该计算机程序编码用于控制一动力系统，该动力系统包括可操作连接至变速器的发动机，所述变速器具有主液压泵和辅助液压泵，每个泵都可操作来提供至变速器液压回路的液压流体，所述计算机程序包括：
确定液压回路中主要压力的代码；
确定液压回路中期望主要压力的代码；
基于所述主要压力，所述期望主要压力，和至主泵的输入控制辅助液压泵操作的代码。
10.如权利要求9所述的产品，其中所述基于所述主要压力，所述期望主要压力，和至所述主泵的输入控制所述辅助液压泵的操作的代码包括当所述主要压力小于期望压力加上一预定偏移量时命令辅助泵操作的代码。
11.如权利要求10所述的产品，其中基于所述主要压力，所述期望主要压力，和至主泵的输入控制辅助液压泵的操作的代码进一步地包括当所述主要压力大于所述期望压力加上所述预定偏移量时停止辅助泵操作的代码。
12.如权利要求9所述的产品，其中基于所述主要压力，所述期望主要压力，至主泵的输入控制辅助液压泵操作的代码包括当所述主要压力小于一预定水平时命令辅助泵操作的代码。
13.如权利要求12所述的产品，其中控制辅助液压泵操作的代码包括当所述主要压力小于所述预定水平时操作辅助泵补充主泵操作的代码。
14.如权利要求9所述的产品，其中变速器的液压回路包括选择性地可操作连接到多个扭矩传递离合器的回路。
15.用于动力系统的控制系统，所述动力系统包括可操作连接至变速器的发动机，该变速器具有主液压泵和辅助液压泵，每个泵都可操作来选择性地提供至变速器液压回路的加压流体，所述控制系统包括可操作来执行一控制方案的分布式控制模块系统，该控制方案可操作来：
确定液压回路中的压力；
确定液压回路的期望压力，以及
基于所述液压力，所述期望液压力，和至主泵的控制输入控制辅助液压泵的操作。
16.如权利要求15所述的控制系统，其中所述变速器包括具有四个扭矩传递离合器的双模复合分配模式的机电变速器和两电机。
17.如权利要求16所述的控制系统，进一步地包括所述控制系统可操作来选择性地促动所述四个扭矩传递离合器进而以四固定档和两连续可变模式之一操作所述变速器。
18.如权利要求15所述的控制系统，其中所述主液压泵利用一源于发动机的输入轴驱动。
19.如权利要求15所述的控制系统，其中所述辅助泵包括一电动泵，该电动泵可操作地被分布式控制模块系统的控制模块控制。
20.如权利要求15所述的控制系统，其中每个泵可操作来选择性地提供至变速器液压回路的加压流体，每个泵进一步地包括一控制阀，该控制阀流体连通地连接到所述主泵和辅助泵输出端从而完全地控制从所述主泵和所述辅助泵中的任何一个流至所述液压回路的液压流体流量。
21.如权利要求15所述的控制系统，其中每个泵可操作来选择性地提供至变速器液压回路的加压流体，每个泵进一步地包括一控制阀，该控制阀具有流体连通的输入端，该输入端流体连通地连接到所述主泵和辅助泵输出端从而控制从所述主泵和所述辅助泵流至所述液压回路的液压流体流量。
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