CN105383278A - 具有发动机起动和再生制动模式的动力总成 - Google Patents
具有发动机起动和再生制动模式的动力总成 Download PDFInfo
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- CN105383278A CN105383278A CN201510446662.6A CN201510446662A CN105383278A CN 105383278 A CN105383278 A CN 105383278A CN 201510446662 A CN201510446662 A CN 201510446662A CN 105383278 A CN105383278 A CN 105383278A
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- motor
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- torque
- torque transmitter
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- 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
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- 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
- B60K6/38—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 driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
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- 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
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- 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
- B60K6/26—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 motors or the generators
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- 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
- B60K6/48—Parallel type
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- 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
- B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
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- 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
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- 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
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- 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
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- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
- B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
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- 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
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
- B60W20/16—Control strategies specially adapted for achieving a particular effect for reducing engine exhaust emissions
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- 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
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- 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
- B60W30/18127—Regenerative braking
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- 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
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- B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
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- 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
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
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- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing
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- 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
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- 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
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Abstract
提供了一种动力总成,该动力总成具有包括可旋转曲轴的发动机。动力总成具有包括变速器输入构件和变速器输出构件的变速器。主减速器操作地连接到变速器输出构件,并且包括驱动轴。发动机离合器具有操作地连接发动机曲轴与变速器输入构件的接合状态,并且具有操作地将发动机曲轴与变速器输入构件断开的脱离状态。提供电动机/发电机,并且第一扭矩传递装置具有选择接合状态,其中第一扭矩传递装置独立于发动机、曲轴和发动机离合器在电动机/发电机和变速器输出构件之间传递扭矩。第二扭矩传递装置具有选择接合状态,其中第二扭矩传递装置独立于第一扭矩传递装置和发动机离合器在电动机/发电机和曲轴之间传递扭矩。
Description
技术领域
本教导总体包括动力总成,其具有可操作来起动发动并且重获车辆制动能量的电动机/发电机。
背景技术
一些混合动力车辆使用连接到发动机曲轴的BAS(皮带驱动交流发电机起动机)进行发动机起动和再生制动。BAS布置要求发动机曲轴在交流发电机起动机从再生制动产生电力或提供电动推进力时必须旋转。如果没有提供气门停用技术,则在这些时间期间旋转发动机产生由于发动机摩擦以及发动机泵气损失造成的机械损失,将一些能量从有用能量转移。
已经提出强混合动力结构以将电动机/发电机直接地或间接地联接到变速器输入、变速器输出或变速器内的中间轴(例如副轴)。但是,该电动机/发电机的同一连接(即到变速器输入、变速器输出或中间轴的直接或间接连接)还用于起动发电机,这将电动机-发电机和发动机之间的有利的传动比限制为远低于由起动机齿环和小齿轮提供的水平。例如,具有直接联接到变速器输出轴的电动机-发电机的混合动力结构仅具有最低变速器速比的倒数,这可能为约2:1的比率,以将来自电动机-发电机的扭矩倍增以起动发电机,而通常的起动机齿环和小齿轮可能具有10:1或更大的比率。
发明内容
本发明提供一种动力总成,包括:
发动机,具有可旋转曲轴;
变速器,具有变速器输入构件和变速器输出构件;
主减速器,操作地连接到变速器输出构件,并且包括驱动轴;
电动机/发电机;
发动机离合器,具有操作地连接发动机曲轴与变速器输入构件的接合状态,并且具有操作地将发动机曲轴与变速器输入构件断开的脱离状态;
第一扭矩传递装置,具有选择接合状态,在该状态中,第一扭矩传递装置独立于发动机、曲轴和发动机离合器在电动机/发电机和变速器输出构件之间传递扭矩;和
第二扭矩传递装置,具有选择接合状态,在该状态中,第二扭矩传递装置独立于第一扭矩传递装置和发动机离合器在电动机/发电机和曲轴之间传递扭矩。
在上文的动力总成中,还包括:
至少一个电子控制器,操作地连接到电动机/发电机、发动机离合器以及第一和第二扭矩传递装置,以控制电动机/发电机来用作电动机或发电机,并且控制发动机离合器以及第一和第二扭矩传递装置的状态;
其中,动力总成在第一扭矩传递装置接合、第二扭矩传递装置脱离、并且电动机/发电机用作发电机时建立再生制动模式,以捕获再生制动能量;并且
其中,动力总成在第二扭矩传递装置接合、第一扭矩传递装置脱离、并且电动机/发电机被控制为用作电动机时建立发动机起动模式,以起动发动机。
在上文的动力总成中,所述至少一个电子控制器控制发动机离合器以在再生制动模式期间以及在发动机起动模式期间建立脱离状态。
在上文的动力总成中,所述至少一个电子控制器控制发动机离合器处于接合状态,第一扭矩传递装置处于接合状态,第二扭矩传递装置处于脱离状态,并且电动机/发电机用作电动机以辅助发动机推进驱动轴。
在上文的动力总成中,所述至少一个电子控制器控制发动机离合器处于脱离状态,第一扭矩传递装置处于接合状态,第二扭矩传递装置处于脱离状态,并且电动机/发电机用作电动机以推进驱动轴。
在上文的动力总成中,在发动机通过电动机/发电机起动之后,电子控制器控制发动机离合器以滑移发动机离合器,以将发动机曲轴的速度与变速器输入构件的速度同步。
在上文的动力总成中,还包括:
从电动机/发电机到发动机曲轴的齿轮系,该齿轮系在第二扭矩传递装置接合时具有大于1的第一扭矩倍增比率;
其中,主减速器在第一扭矩传递装置接合时建立从电动机/发电机到驱动轴的大于1的第二扭矩倍增比率;并且
其中,第一扭矩倍增比率与第二扭矩倍增比率不同。
在上文的动力总成中,与至少一个电气车辆附件组合,该至少一个电气车辆附件操作地连接到电动机/发电机,并且由捕获的再生制动能量供能。
在上文的动力总成中,其中,电动机/发电机为唯一的电动机/发电机,其可操作为提供扭矩到驱动轴并且捕获再生制动能量。
在上文的动力总成中,电动机/发电机具有不小于4千瓦并且不大于12千瓦的额定功率,提供20到60牛顿米的扭矩,并且具有不小于12伏特且不大于48伏特的标称电压。
在上文的动力总成中,电动机/发电机为双轴电动机/发电机,具有转子、沿第一方向从转子延伸的第一电动机轴、和沿相反的第二方向从转子延伸的第二电动机轴;并且所述动力总成进一步包括:
环齿轮,安装在曲轴上;
动力传动系,具有安装在变速器输出轴上的第一齿轮、和与第一齿轮啮合的第二齿轮;
其中,当处于接合状态时,第一扭矩传递装置与第二齿轮接合,以从第一电动机轴传递扭矩到变速器输出轴;
其中,第二扭矩传递装置为滑动小齿轮,该滑动小齿轮与第一电动机轴同轴安装,并且在处于接合状态时与环齿轮啮合以从第二电动机轴传递扭矩到曲轴。
在上文的动力总成中,变速器为无级变速器;其中,变速器输出轴为输出皮带轮轴;其中,电动机/发电机具有电动机轴;并且所述动力总成还包括:
环齿轮,安装在曲轴上;
小齿轮,安装在电动机轴上;
其中,第二扭矩传递装置为滑动惰齿轮,其在从脱离位置移动到接合位置时与环齿轮和小齿轮两者啮合,以建立接合状态,从而从电动机/发电机传递扭矩到曲轴。
在上文的动力总成中,变速器具有变速器壳体;并且
其中,第一扭矩传递装置在变速器壳体内。
在上文的动力总成中,变速器为双离合器变速器;其中,变速器输入构件为第一输入轴;其中,变速器包括与第一输入轴同心的第二输入轴;
其中,发动机离合器具有与曲轴一起旋转的离合器壳体;其中,发动机离合器的接合状态为第一接合状态,在该状态中曲轴连接为与第一输入轴一起旋转,并且不与第二输入轴连接;其中,发动机离合器具有第二接合状态,在该状态中曲轴连接为与第二输入轴一起旋转,并且不连接为与第一输入轴一起旋转;
其中,变速器输出构件为与第一和第二输入轴平行的输出轴;
环齿轮,安装在离合器壳体上;
小齿轮,安装在电动机轴上;
其中,第二扭矩传递装置为滑动惰齿轮,该滑动惰齿轮在从脱离位置移动到接合位置时与环齿轮和小齿轮二者啮合,以建立接合状态,从而从电动机/发电机传送扭矩到曲轴。
本发明还涉及一种车辆,包括:
发动机,具有可旋转曲轴;
变速器,具有输入构件和输出构件;
主减速器,操作地连接到变速器输出构件,并且包括驱动轴;
第一和第二车轮,由驱动轴可旋转地驱动;
第一机械制动系统,安装在第一车轮处,并且可操作为将第一车轮减慢;
第二机械制动系统,安装在第二车轮处,并且可操作为将第二车轮减慢;
电动机/发电机;
发动机离合器,具有操作地连接发动机曲轴与变速器输入构件的接合状态,并且具有操作地将发动机曲轴与变速器输入构件断开的脱离状态;
第一扭矩传递装置,具有选择接合状态,在该状态中,第一扭矩传递装置独立于发动机、曲轴和发动机离合器在电动机/发电机和变速器输出构件之间传递扭矩;
第二扭矩传递装置,具有选择接合状态,在该状态中,第二扭矩传递装置独立于第一扭矩传递装置和发动机离合器在电动机/发电机和曲轴之间传递扭矩;
至少一个电子控制器,操作地连接到第一和第二制动系统、电动机/发电机、发动机离合器以及第一和第二扭矩传递装置,以控制电动机/发动机来用作电动机或发电机,并且控制发动机离合器以及第一和第二扭矩传递装置的状态;
其中,动力总成在第一扭矩传递装置接合、第二扭矩传递装置脱离、并且电动机/发电机用作发电机时建立再生制动模式,以捕获再生制动能量;并且
其中,控制器可操作以协调由机械制动系统提供的制动能量和由电动机/发电机捕获的再生制动能量,以满足制动能量需求。
在上文的车辆中,再生制动模式发生在发动机关闭时和发动机开动时二者。
在上文的车辆中,动力总成在第二扭矩传递装置接合、第一扭矩传递装置脱离、并且电动机/发电机被控制为用作电动机时建立自动起动模式,以起动发动机。
在上文的车辆中,所述至少一个电子控制器控制发动机离合器以在再生制动模式期间和自动起动模式期间建立脱离状态。
在上文的车辆中,所述至少一个电子控制器控制发动机离合器处于接合状态、第一扭矩传递装置处于接合状态、第二扭矩传递装置处于脱离状态、并且电动机/发电机用作电动机以辅助发动机推进驱动轴;并且
其中,所述至少一个电子控制器控制发动机离合器处于脱离状态、第一扭矩传递装置处于接合状态、第二扭矩传递装置处于脱离状态、并且电动机/发电机用作电动机以推进驱动轴。
在上文的车辆中,还包括:
至少一个电气车辆附件,其操作地连接到电动机/发电机,并且由捕获的再生制动能量供能。
提供一种动力总成,其允许单个电动机/发电机收集再生制动能量而不转移为发动机损失,并且使用该能量的一些用于电推进而不转移为发动机损失。动力总成具有包括可旋转曲轴的发动机,和包括变速器输入构件和变速器输出构件的变速器。变速器可以是多速自动变速器、无级变速器、双离合器变速器或其他适当变速器。主减速器(finaldrive)操作地连接到变速器输出构件,并且包括驱动轴。发动机离合器具有操作地连接发动机曲轴与变速器输入构件的接合状态,并且具有操作地将发动机曲轴与变速器输入构件断开的脱离状态。提供一种电动机/发电机,并且第一扭矩传递装置具有选择接合状态,其中第一扭矩传递装置独立于发动机、曲轴和发动机离合器在电动机/发电机和变速器输出构件之间传递扭矩。第二扭矩传递装置具有选择接合状态,其中第二扭矩传递装置独立于第一扭矩传递装置和发动机离合器在电动机/发电机和曲轴之间传递扭矩。
通过接合第二扭矩传递装置建立到发动机曲轴的可选择连接的能力允许发动机经由电动机/发电机起动,包括当发动机离合器脱离时的自动起动。到驱动轴的单独的可选择连接通过第一扭矩传递装置的接合建立,其中由于脱离第二扭矩传递装置和发动机离合器的能力,到驱动轴的连接独立于发动机的起动。因此,在再生制动模式中,电动机/发电机可被控制为用作发电机,以捕获制动能量,而与发动机是否正在旋转无关。控制器可实现由再生制动提供的制动和由机械制动系统提供的制动的混和。当发动机离合器和第一扭矩传递装置接合时,实现扭矩辅助模式,在该模式中,电动机/发电机在驱动轴处辅助发动机提供扭矩。当第一扭矩传递装置接合并且发动机离合器和第二扭矩传递装置脱离时,提供扭矩模式,在该模式中,电动机/发电机在发动机断开的情况下用作电动机以推进驱动轴。
当结合附图理解时,本教导的上述特征和优点以及其他特征和优点从下面用于实施本教导的较佳模式的详细描述变得显而易见。
附图说明
图1是具有第一动力总成的第一车辆的一部分的示意性平面视图。
图2是根据本教导的替代方面的具有第二动力总成的第二车辆的一部分的示意性平面视图。
图3是根据本教导的另一替代方面的具有第三动力总成的第三车辆的一部分的示意性平面视图。
具体实施方式
参照附图,其中,全部视图中,相似的附图标记指代相似的部件,图1-3显示了具有不同动力总成实施例的车辆,所述不同动力总成实施例可使用仅单个电动机/发电机并且在再生制动期间无需发动机旋转而实现发动机自动起动和再生制动。参照图1,车辆10具有动力总成12,动力总成12包括具有可旋转曲轴的发动机(E)14。发动机14可以是内燃发动机,内燃发动机为火花点火发动机、压燃发动机或其他类型的动力装置。
动力总成12还包括变速器18,变速器18操作地连接到发动机14以将牵引扭矩提供到第一和第二车辆车轮20A,20B,车辆车轮20A,20B具有安装到其的相应的轮胎22A,22B。更具体地,变速器18为无级变速器,但是可以使用其他类型的变速器。变速器18具有壳体24、至少部分地容纳在壳体24中的变速器输入构件26和变速器输出构件28。输入皮带轮30具有安装到变速器输入构件26上的皮带轮槽轮,输出皮带轮32具有安装到变速器输出构件28上的皮带轮槽轮。皮带34以从输入构件26到输出构件28的可变比率下传递扭矩,该可变比率取决于皮带轮半体的相对位置,如本领域技术人员所理解的。
扭矩经由主减速器36从变速器输出构件28传送到车轮20A,20B。主减速器36包括扭矩倍增多级齿轮系,其具有安装到输出构件28上以随其旋转的第一齿轮38、与第一齿轮38啮合并且直径大于第一齿轮38的第二齿轮40。第三齿轮42与第二齿轮40操作地连接以与第二齿轮40在相同的速度下旋转。第二和第三齿轮40,42可以是一体的台阶齿轮。第三齿轮42与第四齿轮44啮合,第四齿轮44为差速器46的环齿轮(ringgear)。扭矩被从差速器46传送到驱动轴48,驱动轴48具有两个半轴48A,48B。多个恒速万向节50被示出。第一机械制动系统52A被安装到第一车轮20A,第二机械制动系统52B被安装到第二车轮20B。机械制动系统52A,52B仅示意性地显示,并且可以是任何适当的制动系统,例如摩擦盘制动系统,如本领域技术人员所理解的。制动系统52A,52B被控制为制动车轮20A,20B,如本文进一步描述的。
动力总成12具有混合动力功能性,因为其具有单个电动机/发电机(M)54,该单个电动机/发电机可控制为在一些车辆操作条件下用作电动机并且在其他车辆操作条件下用作发电机。在一个实施例中,并且通过非限制性示例的方式,电动机/发电机54在不可旋转电动机壳体60内部具有环形定子56和由定子56围绕的转子58。定子56和转子58由在壳体60内部的隐藏线表示。定子56固定到壳体60,并且可接收来自一体的电动机控制器功率逆变器模块(MPIM)66的电流,该一体的电动机控制器功率逆变器模块(MPIM)66经由传送导体62从存储在能量存储装置64(B)中的能量接收电流。能量存储装置可以是电池或电池组,并且在本文中也可以被称为电池。
动力总成12包括至少一个电子控制器,其控制本文所述的多个部件的运行,以建立不同的操作模式。在图1的实施例中,存在彼此通信的两个电子控制器。一个控制器包括在安装到电动机/发电机54并且与电动机/发电机54一体的MPIM66中。MPIM66基于从单独的电子控制器(C)68接收的控制输入而控制电动机/发电机54用作电动机或发电机,该单独的电子控制器(C)68从多个其他部件接收指示车辆操作条件的操作输入信号,如本文所讨论的。
如果电动机/发电机54利用交变电流,例如如果其具有三相绕组,则MPIP66将从能量存储装置64提供的直流电流转变为给定子56供能所需的交变电流。替代地,功率逆变器可集成在控制器68中,并且控制器68可以是唯一的电子控制器。
动力总成12具有策略上定位的扭矩传递装置和离合器,其能够以能效高的方式实现期望的操作模式。首先,发动机离合器70定位在变速器壳体24内,并且可响应于来自控制器68的控制信号选择地接合和脱离,以分别连接曲轴16用于与变速器输入构件26共同旋转、以及将曲轴16从与变速器输入构件26的共同旋转断开。发动机离合器70可电致动或液压致动,并且可以为常接合的或常脱离的。如本文所使用的,当两个部件通过例如离合器等扭矩传递装置连接到彼此以在相同的速度下旋转时,两个部件被配置为“共同旋转”或被连接用于“共同旋转”。在所示的实施例中,曲轴16到变速器输入构件26的连接是间接的,因为该连接经由液力联接变矩器72。变矩器72经由液力联接逐渐增加从曲轴16到发动机离合器输入轴74的扭矩传送,如本领域技术人员所理解的。当变矩器72完全联接曲轴16与离合器输入轴74时,发动机离合器70的接合能够使变速器输入构件26与曲轴16以相同的速度旋转。发动机离合器70因而具有接合状态,并且具有脱离状态,接合状态操作地联接发动机曲轴16与变速器输入构件26,脱离状态将曲轴16从变速器输入构件26操作地断开。发动机离合器70可以是摩擦盘离合器或其他适当类型的离合器。
另外,动力总成12包括第一扭矩传递装置76,其响应于来自控制器68的控制信号而选择地可接合和可脱离,从而分别连接电动机轴78以与变速器输入构件28共同旋转、和将电动机轴78从与变速器输入构件28的共同旋转断开。电动机轴78从转子58延伸并且与转子58共同旋转。第一扭矩传递装置76因而具有选择接合状态,在该状态中,扭矩在电动机/发电机54和变速器输出构件28之间被传递。电动机/发电机54和变速器输出构件28之间的连接独立于发动机14、曲轴16和发动机离合器70。换句话说,从电动机轴78到变速器输出构件28的扭矩传递发生在第一扭矩传递装置76被接合时,而与是否发动机14开动并且曲轴16旋转无关,并且与发动机离合器70是否接合状态或脱离状态无关。
动力总成12还具有第二扭矩传递装置80,其具有选择接合状态,在该状态中,第二扭矩传递装置80在电动机/发电机54与曲轴16之间传递扭矩。在所示的实施例中,第二扭矩传递装置80为安装到轴84的滑动惰齿轮82,轴84被轴承或类似物(未示出)支撑用于绕轴线85旋转。轴84和齿轮82可由致动器87沿箭头86的方向从所示的脱离状态移动到以虚线所示的位置88,从而建立接合状态。致动器87可以是由来自控制器68的电控制信号激励的电磁螺线管,用于使滑动惰齿轮82移动。在接合状态中,惰齿轮82与环齿轮80和小齿轮92二者都啮合。环齿轮90被安装到曲轴16上,以与曲轴16共同旋转。小齿轮92安装在电动机轴78上,以与电动机轴78共同旋转。因此,当惰齿轮82处于接合位置中时,从电动机/发电机54到曲轴16的扭矩传递路径被建立。扭矩传送可独立于第一扭矩传递装置76并且独立于发动机离合器70的状态而发生。换句话说,从电动机轴78到曲轴16的扭矩传递在第二扭矩传递装置80被接合时发生,而与是否发动机14被发动机离合器70连接用于到变速器18的扭矩传递无关,并且与是否电动机/发电机54由第二扭矩传递装置80连接用于与变速器18的扭矩传递无关。
在动力总成12以该方式布置的情况下,控制器68可控制动力总成12来根据车辆操作条件并且全部使用单个电动机/发电机54提供再生制动模式、发动机自动起动模式和扭矩辅助模式。控制器68具有处理器,处理器具有存储的算法,处理器可包括再生制动模块、发动机自动起动模块和扭矩辅助模块,其每一个基于例如通过来自传感器的传感器信号作为数据输入到控制器68的车辆操作条件而建立相应的操作模式,包括关于离合器70以及扭矩传递机构76和80的操作状态的数据、关于发动机14的状态的数据(例如是否发动机14开动(即正被供给燃料)、是否曲轴16正在旋转)、关于能量存储装置64的操作状态、电动机/发电机54的操作状态和车辆操作者需求(例如来自制动输入装置(例如制动踏板)的制动需求或来自扭矩输入装置(例如加速器踏板)的扭矩需求)的数据。
具体地,当控制器68接收指示车辆减速的操作条件时,控制器68可建立再生制动模式,其中减慢车轮20A,20B的制动能量通过控制电动机/发电机54用作发电机来提供,由此将车轮20A,20B的动能转变为存储在能量存储装置64中的电能。控制器68可还接收来自连接到能量存储装置64的传感器或电池控制器(未示出)的信号,其指示能量存储装置64的充电状态和/或能量存储装置64的其他操作条件,以确保用于建立再生制动模式的预定要求被满足。例如,再生制动模式的建立也可取决于能量存储装置64的充电状态小于预定充电状态。另外,由控制器68的处理器执行的存储的算法可包括制动混和(brakeblending)模块,其中由机械制动系统52A,52B提供的制动能量与由再生制动提供的制动能量组合,以满足作为输入到控制器68的车辆操作条件而接收的预定制动扭矩需求,例如来自制动踏板的下压和/或车辆减速信号。
如果控制器68确定车辆操作条件指示再生制动模式应被建立,则控制器68发送控制信号,如果第一扭矩传递装置76还没有接合,则该信号使第一扭矩传递装置76接合,如果第二扭矩传递装置80处于接合状态,则该信号使第二扭矩传递装置80脱离,并且该信号使电动机/发电机54用作发电机。另外,在再生制动模式期间,控制器68控制发动机离合器70建立脱离状态。由于曲轴16在再生制动模式中没有操作地连接到电动机/发电机54,因此从电动机轴78到变速器输出构件28的扭矩传递发生,而与是否发动机14开动且曲轴16正在旋转无关。如果扭矩流动路径经由再生制动模式通过发动机14则会发生的由于发动机摩擦和发动机泵气损失造成的机械损失因而被避免。
动力总成12可还使用单个电动机/发电机54来建立发动机起动模式,其中发动机14被起动,无论是作为初始冷起动还是作为自动起动。控制器68发送建立发动机起动模式的控制信号。当控制器68接收指示车辆扭矩需求的请求的车辆操作条件时,例如可通过制动踏板的释放或加速器踏板输入信号指示。在发动机起动模式中,电动机/发电机54被控制为用作电动机,以提供扭矩给曲轴16,从而起动发动机14。如果控制器68确定车辆操作条件指示发动机起动模式应被建立,则控制器68发送控制信号,该控制信号使第二扭矩传递装置80处于接合状态,第一扭矩传递装置76处于脱离状态,并且电动机/发电机54用作电动机以转动曲轴16,从而起动发动机14。另外,控制器68控制发动机离合器70以在发动机起动模式期间建立脱离状态。可任选地,电子控制器68可控制发动机离合器70滑移(slip),以在发动机14通过电动机/发电机54起动之后将发动机曲轴16的速度与变速器输入构件26的速度同步。受控滑移在没有提供变矩器72的实施例中可能特别有用。
动力总成12也可在推进模式中使用单个电动机/发电机54来用作电动机,以辅助发动机14在驱动轴48处提供扭矩,从而推进车辆10。该推进模式可被称为扭矩辅助模式,其中电子控制器68控制发动机离合器70处于接合状态,第一扭矩传递装置76处于接合状态,并且第二扭矩传递装置80处于脱离状态。在第二扭矩传递装置80脱离的情况下,电动机轴78可以等于变速器输出构件28的速度的速度旋转,而发动机曲轴16以等于变速器输入构件26的速度的速度旋转。小齿轮92到滑动惰齿轮82或滑动惰齿轮82到环齿轮90的传动比不影响电动机轴78的速度或曲轴16的速度。扭矩辅助模式可因而在无级变速器被控制为改变输入皮带轮30和输出皮带轮32之间的变速器速比时发生。
当在巡航模式(也被称为航行模式)过程中,控制器接收到扭矩需求时,控制器68可还控制电动机/发电机54在推进模式中用作电动机,以提供扭矩来推进车辆10。在巡航模式中,发动机14关闭(即燃料没有提供给发动机14)并且发动机离合器70处于脱离状态。如果控制器68接收到对扭矩的需求而同时处于巡航模式中,例如通过相对轻地下压加速器踏板,则所请求的扭矩可在可能由电动机/发电机54单独满足的水平,并且电动机/发电机54被控制为用作电动机经由主减速器36推进驱动轴48。在该模式中,第一扭矩传递装置76处于接合状态,并且发动机离合器70和第二扭矩传递装置80处于脱离状态。
动力总成12还能够使电动机/发电机54相对小,因为足够的扭矩倍增在发动机起动模式中以及推进模式中提供。在一个实施例中,电动机/发电机54可具有不小于4千瓦且不大于12千瓦的额定功率,并且可提供20到60牛顿米的扭矩,并且可具有不小于12伏特且不大于48伏特的标称电压。例如,小齿轮92、滑动惰齿轮82和环齿轮90建立扭矩倍增齿轮系,当第二扭矩传递装置80被接合时,扭矩被通过该扭矩倍增齿轮系从电动机/发电机54传送到发动机曲轴16。齿轮系92、82、90减速并且以大于1的扭矩倍增比率倍增从转子58到曲轴16的扭矩,因为环齿轮90的直径和齿数大于小齿轮92的直径和齿数、并且优选地为小齿轮92的直径和齿数的三倍或更大的倍数。
类似地,主减速器36为两级主减速器,其在第一扭矩传递装置76接合并且电动机/发电机54被控制为电动机以在驱动轴48处提供扭矩时,建立从电动机/发电机54到驱动轴48的大于1的第二扭矩倍增比率,无论推进是由电动机/发电机54单独进行还是在扭矩辅助模式中由发动机14和电动机/发电机54二者进行。主减速器36为齿轮系,具有从第一齿轮38到第二齿轮40的第一级扭矩倍增,和从第三齿轮42到第四齿轮44的第二级齿轮倍增。第二齿轮40具有比第一齿轮38更大的直径和齿数,并且第四齿轮44具有比第三齿轮42更大的直径和齿数。因此,第二扭矩倍增比率大于1,并且优选地比1大很多倍,例如6:1的比率。
从电动机/发电机54到曲轴16的第一扭矩倍增比率与从电动机/发电机54到驱动轴48的第二扭矩倍增比率不同。这允许在发动机起动期间,电动机/发电机54在有效的速度下运转,例如最小化转换损失的速度,同时提供曲轴16的期望的旋转速度,并且允许电动机/发电机54在变速器输出构件28的速度的一定范围下运转,同时提供足够的扭矩用于推进。
由于动力总成12能够在再生制动模式下操作而与发动机14的操作状态无关,因此再生机会是足够的以使得能够实现一个或多个电驱动车辆附件(A)94的使用。例如,车辆附件94可包括空调系统、一个或多个发动机或变速器冷却泵或其他附件。通过转变为电功率并且存储在能量存储装置(B)64的重获的制动能量给这些附件供能而不是具有发动机驱动的附件可通过降低发动机载荷而改善燃料经济性。
图2显示了第二车辆110的实施例,其具有在本教导范围内的第二动力总成112。车辆110和动力总成112的很多部件与图1的车辆10和动力总成12相同,并且如关于图1的车辆10和动力总成12所描述地运行,因此标记有相似的附图标记。动力总成112包括双离合器变速器118,其可操作地连接到发动机14以提供牵引扭矩给第一和第二车辆车轮20A,20B。变速器118具有壳体124、至少部分地容纳在壳体124内的第一变速器输入构件126A、第二变速器输入构件126B和变速器输出构件128。更具体地,变速器118具有第一变速器输入构件126A,本文中也称为第一输入轴126A,和第二变速器输入构件126B,本文中也被称为第二输入轴126B。第二输入轴126B与第一输入轴126A同心。第二输入轴126B为套筒轴,其同中心地围绕第一输入轴126A。
动力总成112具有发动机离合器170,该发动机离合器170具有操作地连接发动机曲轴16以与第一输入轴126A共同旋转的第一接合状态、操作地连接曲轴16以与第二输入轴126B共同旋转的第二接合状态、和操作地将曲轴16与输入轴126A,126B二者断开的脱离状态。更具体地,发动机离合器170具有离合器壳体171,离合器壳体171从曲轴16延伸并且与曲轴16共同旋转(即以与曲轴16相同的速度)。在第一接合状态,第一致动器(未示出),例如电动或液压致动施加盘接合离合器壳体171,以与第一输入轴126A一起旋转,并且不与第二输入轴126B一起旋转。在第二接合状态,第二致动器(未示出),例如电动或液压致动施加盘接合离合器壳体171,以与第二输入轴126B一起旋转,并且不与第一输入轴126A一起旋转。
变速器118具有变速器输出构件,其为与第一和第二输入轴126A,126B平行的输出轴128。通过不同的相互啮合的齿轮对,其每一个包括安装用于在第一输入轴126A上或在第二输入轴126B上旋转的输入齿轮和安装用于在输出轴128上旋转的输出齿轮,可在第一输入轴126A和输出轴128之间以及第二输入轴126B和输出轴128之间建立多个不同的传动比。选择器137由第二电子控制器(C2)168B致动,以接合适当的输入齿轮以与输入轴126A或126B共同旋转,从而建立适当的传动比,如本领域技术人员所理解的。输入齿轮131A安装用于在第二输入轴126B上旋转,并且与安装用于在输出轴128上旋转的输出齿轮135A啮合,以当选择器137接合输入齿轮131A且第二输入轴126B一致地旋转时建立第一传动比。输入齿轮131B安装用于在第一输入轴126A上旋转,并且与安装用于在输出轴128上旋转的输出齿轮135B啮合,以当选择器137接合输入齿轮131B且第一输入轴126A一致地旋转时建立第二传动比。输入齿轮131C安装用于在第二输入轴126B上旋转,并且与安装用于在输出轴128上旋转的输出齿轮135C啮合,以当选择器137接合输入齿轮131C且第二输入轴126B一致地旋转时建立第三传动比。输入齿轮131D安装用于在第一输入轴126A上旋转,并且与安装用于在输出轴128上旋转的输出齿轮135D啮合,以当选择器137接合输入齿轮131D且第一输入轴126A一致地旋转时建立第四传动比。输入齿轮131E安装用于在第二输入轴126B上旋转,并且与安装用于在输出轴128上旋转的输出齿轮135E啮合,以当选择器137接合输入齿轮131E且第二输入轴126B一致地旋转时建立第五传动比。输出轴128与输入轴126A或126B的扭矩的数值比率从第一传动比到第五传动比而减小。主减速器136包括相互啮合的扭矩倍增齿轮对,其包括输出齿轮135E,该输出齿轮135E与安装为与差速器46的壳体一起旋转的环齿轮139啮合并且驱动该环齿轮139。主减速器136将扭矩从输出轴128传送到驱动轴48。
变速器118包括第一扭矩传递装置176,其具有选择接合状态,在该状态中,第一扭矩传递装置176在电动机/发电机54和变速器输出轴128之间传递扭矩,而独立于发动机14、曲轴16和发动机离合器170的状态。
第二扭矩传递装置180为滑动小齿轮182,其例如通过花键安装为与电动机轴78一起旋转,但是当通过例如电磁螺线管等致动器187致动时在电动机轴78上滑动,以沿箭头186的方向从所示的脱离位置移动到以虚线所示的接合位置。在脱离位置中,第二扭矩传递装置180处于脱离状态。在接合位置中,滑动小齿轮182与环齿轮190啮合以建立接合状态,环齿轮190安装在离合器壳体171上以与第二输入轴126B共同旋转。在接合状态,扭矩以由小齿轮182和环齿轮190的齿数确定的扭矩倍增比率从电动机/发电机54传送到曲轴16。
在所示的实施例中,除了在MPIM66中的控制器,两个电子控制器(C1)168A和(C2)168B用于控制动力总成12。第一电子控制器(C1)168A操作地连接到第一扭矩传递装置176、第二扭矩传递装置180、MPIM66和机械制动系统52A,52B(为了图中清楚,连接部未示出)。第二电子控制器(C2)168B操作地连接到发动机离合器170以及连接到选择器137。控制器(C1)168A和(C2)168B从这些部件以及多个其他部件接收指示车辆操作条件的操作输入信号,如本文中讨论的。
控制器(C1)168A,(C2)168B控制动力总成112,以建立再生制动模式、发动机起动模式(可以为自动起动)、推进模式(单独从电动机/发电机54或以扭矩辅助模式从电动机/发电机54和发动机14二者提供扭矩到驱动轴48)。操作模式以关于图1的动力总成12描述的相同的方式被建立,其中,关于相应的接合或脱离状态,发动机离合器170被以与发动机离合器70相同的方式控制,第一扭矩传递装置176被以与第一扭矩传递装置76相同的方式控制,并且第二扭矩传递装置180被以与第二扭矩传递装置80相同的方式控制,以根据车辆操作条件建立相应的模式。具体地,在发动机起动模式,第二扭矩传递装置180处于接合状态,第一扭矩传递装置176和发动机离合器170处于脱离状态,且电动机/发电机54被控制为用作电动机。在再生制动模式中,第一扭矩传递装置176处于接合状态,第二扭矩传递装置180和发动机离合器170处于脱离状态,且电动机/发电机54被控制为用作发电机。在推进模式中,第一扭矩传递装置176处于接合状态,第二扭矩传递装置180处于脱离状态,且电动机/发电机54被控制为用作电动机,其中发动机离合器170脱离,或在扭矩辅助模式中发动机离合器170接合。可任选地,在发动机14通过电动机/发电机54起动之后,第二电子控制器(C2)168B可控制发动机离合器170滑移,以将发动机曲轴16的速度与变速器输入轴126A或126B的速度同步。另外,与动力总成12一样,由控制器168A,168B的处理器执行的存储的算法可包括制动混和模块,其中由机械制动系统52A,52B提供的制动能量与由再生制动提供的制动能量组合,以满足作为输入到控制器168A,168B的车辆操作条件接收的预定制动扭矩需求,例如来自制动踏板的下压,和/或车辆加速信号。
类似动力总成12,再生制动模式可独立于发动机14的状态在动力总成112中建立。再生制动模式可取决于另外的车辆操作条件,例如能量存储装置(B)64的充电状态。由于动力总成112可以再生制动模式操作,而与发动机14的操作状态无关,因此再生机会是足够的以使得能够实现一个或多个电驱动车辆附件(A)94的使用。另外,电动机/发电机54为用于动力总成中的唯一的电动机/发电机,用于建立操作模式、用于提供扭矩到驱动轴48、以及用于捕获再生制动能量。
图3显示了具有在本教导范围内的第三动力总成212的第三车辆210的实施例。车辆210和动力总成212的很多部件与图1中的车辆10和动力总成12相同,并且如关于图1的车辆10和动力总成12所描述地操作,并且因此标记有相似的附图标记。动力总成212包括多速变速器218,其可操作地连接到发动机(E)14,以提供牵引扭矩到第一和第二车辆车轮20A,20B。变速器218以纵向后轮驱动布置方式布置,因为变速器218具有彼此同轴的变速器输入构件226和变速器输出构件228。变速器218具有变速器壳体224,其容纳多个可选择接合的扭矩传递装置和相互啮合的齿轮,例如行星齿轮组,可控制为在变速器输入构件226和变速器输出构件228之间建立多个不同的传动比,如本领域技术人员所理解的。
动力总成212具有发动机离合器270,该发动机离合器具有操作地连接发动机曲轴216以与变速器输入构件226共同旋转的第一接合状态,和操作地将曲轴216与输入构件226断开的脱离状态。更具体地,发动机离合器270具有致动器(未示出),例如电动或液压致动施加盘,其通过来自控制器(C)68的控制信号激活,以接合离合器盘组从而建立接合状态,如本领域技术人员所理解的。
主减速器236包括小锥齿轮235,其与输出构件228一起旋转,并且与安装以与差速器46的壳体一起旋转的环锥齿轮(ringbevelgear)239啮合,以从变速器输出构件228传送扭矩到驱动轴248,驱动轴248包括半轴248A和248B。驱动轴248为后驱动轴。锥齿轮235,239的齿数可配置具有扭矩倍增比率,以增加从变速器输出构件228到驱动轴248的扭矩。
动力总成212包括电动机/发电机54A,其在所有方面与关于图1描述的电动机/发电机54相似,不同之处在于,电动机/发电机54A配置为双轴电动机/发电机,其具有沿第一方向从转子58延伸的第一电动机轴78A,和沿相反的第二方向从转子58延伸的第二电动机轴78B。如图3显而易见的,第一方向朝向轴248,并且第二方向朝向发动机14。电动机轴78A,78B与曲轴216、变速器输入构件226和变速器输出构件228平行或基本上平行。
动力传动系包括安装在变速器输出构件228上的第一齿轮238,和与第一齿轮238啮合的第二齿轮237。第二齿轮237由例如车架(未示出)等固定构件支撑在轴承上。第一扭矩传递装置276包括施加构件277,施加构件277可响应于来自控制器68的控制信号由例如电磁螺线管等电激活的致动器279移动,以与第二齿轮237的面接合,以使第一电动机轴78A和第二齿轮237一致旋转,并且扭矩在电动机/发电机54A和变速器输出构件228之间传递。通过接合的第一扭矩传递装置276的扭矩传送独立于发动机14、曲轴216和发动机离合器270的状态。替代地,代替第一扭矩传递装置276定位为在电动机轴78A和第二齿轮237之间操作,第一扭矩传递装置276可定位为在第一齿轮238和变速器输出构件228之间操作。
替代地,代替相互啮合的齿轮237,238,链和链轮(chainandsprocket)动力传动系可被用于从第一电动机轴78A传送扭矩到变速器输出构件228。具体地,第一链轮可安装为与变速器输出构件228一起旋转,并且可通过链连接到第二链轮。当通过第一扭矩传递装置276与第一电动机轴78A接合时,第二链轮可由第一电动机轴78A驱动。由于链轮将沿相同的方向旋转,因此在该情况下,第一和第二电动机轴78A,78B将沿与变速器输出构件228相同的方向旋转。惰齿轮将因此在小齿轮282和环齿轮290之间是必要的,以对于每一种操作模式(除了倒车)保持电动机/发电机54A的相同的旋转方向。
动力总成212包括第二扭矩传递装置280,其为滑动小齿轮282,例如通过花键同轴安装以与第二电动机轴78B一起旋转,但是当由例如电磁螺线管等致动器287致动时在第二电动机轴78B上滑动,以从所示的脱离位置移动到以虚线所示的接合位置。在脱离位置中,第二扭矩传递装置280处于脱离状态。在接合位置中,滑动小齿轮282与安装为与曲轴216共同旋转的环齿轮290啮合。在接合状态,扭矩被以由小齿轮282和环齿轮290的齿数确定的扭矩倍增比率从电动机/发电机54A传送到曲轴216。
在所示的实施例中,除了MPIM(M)66中的控制器,电子控制器68被用于控制动力总成212。电子控制器(C)68操作地连接到第一扭矩传递装置276、第二扭矩传递装置280、发动机离合器270、MPIM66和机械制动系统52A,52B。为了图中清楚,控制器(C)68到发动机离合器270以及到机械制动系统52A、52B的连接部未示出。控制器(C)68从这些部件以及其他部件接收指示车辆操作条件的操作输入信号,如本文所讨论的。
控制器(C)68控制动力总成212,以建立再生制动模式、发动机起动模式(可以为自动起动)、推进模式(单独从电动机/发电机54A或以扭矩辅助模式从电动机/发电机54A和发动机14二者提供扭矩到驱动轴248)。操作模式以关于图1的动力总成12描述的相同的方式建立,其中,关于相应的接合或脱离状态,发动机离合器270被以与发动机离合器70相同的方式控制,第一扭矩传递装置276被以与第一扭矩传递装置76相同的方式控制,并且第二扭矩传递装置280被以与第二扭矩传递装置80相同的方式控制,以根据车辆操作条件建立相应的模式。具体地,在发动机起动模式,第二扭矩传递装置280处于接合状态,第一扭矩传递装置276和发动机离合器270处于脱离状态,且电动机/发电机54A被控制为用作电动机。在再生制动模式,第一扭矩传递装置276处于接合状态,并且第二扭矩传递装置280和发动机离合器270处于脱离状态,且电动机/发电机54A被控制为用作发电机。在推进模式,第一扭矩传递装置276处于接合状态,第二扭矩传递装置280处于脱离状态,且电动机/发电机54A被控制为用作电动机,其中发动机离合器270处于脱离状态,或在扭矩辅助模式中发动机离合器270接合。可任选地,在发动机14通过电动机/发电机54A起动之后,电子控制器68可控制发动机离合器270滑移,以将发动机曲轴216的速度与变速器输入构件226的速度同步。另外,与图1的动力总成12一样,由控制器(C)68的处理器执行的存储的算法可包括制动混和模块,其中由机械制动系统52A,52B提供的制动能量与由再生制动提供的制动能量组合,以满足作为输入到控制器(C)68的车辆操作条件接收的预定制动扭矩需求,例如从制动踏板的下压,和/或车辆减速信号。
类似动力总成12,再生制动模式可独立于发动机14的状态在动力总成212中建立。再生制动模式可取决于另外的车辆操作条件,例如能量存储装置(B)64的充电状态。由于动力总成212可以再生制动模式操作,而与发动机14的操作状态无关,因此再生机会是足够的以使得能够实现一个或多个电驱动车辆附件(A)94的使用。另外,电动机/发电机54A为用于动力总成中唯一的电动机/发电机,以建立操作模式、以提供扭矩到驱动轴248、以及以捕获再生制动能量。
尽管已经对执行本发明的较佳模式进行了详尽的描述,但是本领域技术人员可得知在所附的权利要求的范围内的用来实施本发明的许多替换设计和实施例。
Claims (10)
1.一种动力总成,包括:
发动机,具有可旋转曲轴;
变速器,具有变速器输入构件和变速器输出构件;
主减速器,操作地连接到变速器输出构件,并且包括驱动轴;
电动机/发电机;
发动机离合器,具有操作地连接发动机曲轴与变速器输入构件的接合状态,并且具有操作地将发动机曲轴与变速器输入构件断开的脱离状态;
第一扭矩传递装置,具有选择接合状态,在该状态中,第一扭矩传递装置独立于发动机、曲轴和发动机离合器在电动机/发电机和变速器输出构件之间传递扭矩;和
第二扭矩传递装置,具有选择接合状态,在该状态中,第二扭矩传递装置独立于第一扭矩传递装置和发动机离合器在电动机/发电机和曲轴之间传递扭矩。
2.根据权利要求1所述的动力总成,还包括:
至少一个电子控制器,操作地连接到电动机/发电机、发动机离合器以及第一和第二扭矩传递装置,以控制电动机/发电机来用作电动机或发电机,并且控制发动机离合器以及第一和第二扭矩传递装置的状态;
其中,动力总成在第一扭矩传递装置接合、第二扭矩传递装置脱离、并且电动机/发电机用作发电机时建立再生制动模式,以捕获再生制动能量;并且
其中,动力总成在第二扭矩传递装置接合、第一扭矩传递装置脱离、并且电动机/发电机被控制为用作电动机时建立发动机起动模式,以起动发动机。
3.根据权利要求2所述的动力总成,其中,所述至少一个电子控制器控制发动机离合器以在再生制动模式期间以及在发动机起动模式期间建立脱离状态。
4.根据权利要求2所述的动力总成,其中,所述至少一个电子控制器控制发动机离合器处于接合状态,第一扭矩传递装置处于接合状态,第二扭矩传递装置处于脱离状态,并且电动机/发电机用作电动机以辅助发动机推进驱动轴。
5.根据权利要求2所述的动力总成,其中,所述至少一个电子控制器控制发动机离合器处于脱离状态,第一扭矩传递装置处于接合状态,第二扭矩传递装置处于脱离状态,并且电动机/发电机用作电动机以推进驱动轴。
6.根据权利要求2所述的动力总成,还包括:
从电动机/发电机到发动机曲轴的齿轮系,该齿轮系在第二扭矩传递装置接合时具有大于1的第一扭矩倍增比率;
其中,主减速器在第一扭矩传递装置接合时建立从电动机/发电机到驱动轴的大于1的第二扭矩倍增比率;并且
其中,第一扭矩倍增比率与第二扭矩倍增比率不同。
7.根据权利要求1所述的动力总成,其中,电动机/发电机为唯一的电动机/发电机,其可操作为提供扭矩到驱动轴并且捕获再生制动能量。
8.根据权利要求1所述的动力总成,其中,电动机/发电机为双轴电动机/发电机,具有转子、沿第一方向从转子延伸的第一电动机轴、和沿相反的第二方向从转子延伸的第二电动机轴;并且所述动力总成进一步包括:
环齿轮,安装在曲轴上;
动力传动系,具有安装在变速器输出轴上的第一齿轮、和与第一齿轮啮合的第二齿轮;
其中,当处于接合状态时,第一扭矩传递装置与第二齿轮接合,以从第一电动机轴传递扭矩到变速器输出轴;
其中,第二扭矩传递装置为滑动小齿轮,该滑动小齿轮与第一电动机轴同轴安装,并且在处于接合状态时与环齿轮啮合以从第二电动机轴传递扭矩到曲轴。
9.根据权利要求1所述的动力总成,其中,变速器为无级变速器;其中,变速器输出轴为输出皮带轮轴;其中,电动机/发电机具有电动机轴;并且所述动力总成还包括:
环齿轮,安装在曲轴上;
小齿轮,安装在电动机轴上;
其中,第二扭矩传递装置为滑动惰齿轮,其在从脱离位置移动到接合位置时与环齿轮和小齿轮两者啮合,以建立接合状态,从而从电动机/发电机传递扭矩到曲轴。
10.根据权利要求1所述的动力总成,其中,变速器为双离合器变速器;其中,变速器输入构件为第一输入轴;其中,变速器包括与第一输入轴同心的第二输入轴;
其中,发动机离合器具有与曲轴一起旋转的离合器壳体;其中,发动机离合器的接合状态为第一接合状态,在该状态中曲轴连接为与第一输入轴一起旋转,并且不与第二输入轴连接;其中,发动机离合器具有第二接合状态,在该状态中曲轴连接为与第二输入轴一起旋转,并且不连接为与第一输入轴一起旋转;
其中,变速器输出构件为与第一和第二输入轴平行的输出轴;
环齿轮,安装在离合器壳体上;
小齿轮,安装在电动机轴上;
其中,第二扭矩传递装置为滑动惰齿轮,该滑动惰齿轮在从脱离位置移动到接合位置时与环齿轮和小齿轮二者啮合,以建立接合状态,从而从电动机/发电机传送扭矩到曲轴。
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US20160052382A1 (en) | 2016-02-25 |
US9527375B2 (en) | 2016-12-27 |
DE102015113318A1 (de) | 2016-02-25 |
CN105383278B (zh) | 2018-06-29 |
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