CN103991451A - Control method of hybrid vehicle - Google Patents
Control method of hybrid vehicle Download PDFInfo
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- CN103991451A CN103991451A CN201410052147.5A CN201410052147A CN103991451A CN 103991451 A CN103991451 A CN 103991451A CN 201410052147 A CN201410052147 A CN 201410052147A CN 103991451 A CN103991451 A CN 103991451A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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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
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint 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
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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
- 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
- B60W10/101—Infinitely variable gearings
- B60W10/105—Infinitely variable gearings of electric type
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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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
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- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
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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
- B60K6/42—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
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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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
- B60W2520/105—Longitudinal acceleration
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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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
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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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/16—Ratio selector position
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/30—Wheel torque
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H2059/0239—Up- and down-shift or range or mode selection by repeated movement
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
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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
- 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)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
A hybrid vehicle and an assicuated control method are disclosed, wherein the ratio of engine speed to vehicle speed varies continuously in some operating modes and is controlled to simulate a discrete ratio transmission in other operating modes. The disclosure specifies the method of controlling the engine speed and the combined output torque of the engine and at least one traction motor in each of the operating modes. Transitions among operating modes occur in response to driver movement of a shift lever, driver operation of shift selectors, and changes in vehicle speed.
Description
Technical field
The disclosure relates generally to the output torque of the combination of control engine rotating speed and motor vehicle driven by mixed power in response to chaufeur input.
Background technology
In thering is the vehicle of discrete transmitting ratio change-speed box (discrete ratio transmission), during short intervals while being another transmitting ratio except change-speed box from a gear ratio conversion, the rotating speed of input shaft is constrained to the speed of a motor vehicle proportional by the one group of transmitting ratio limiting.When tor-con is locked, engine speed is also confined to the speed of a motor vehicle proportional.In addition, in having the hybrid electric vehicle of power separation (power-split) framework, change-speed box does not mechanically apply strict relation between engine speed and the speed of a motor vehicle.
Even in having the vehicle of automatic transmission with hydraulic torque converter (conventionally determining the selection of transmitting ratio or engine speed in this vehicle by controller), some chaufeurs also tend to surmount once in a while controller, so that the operation that is similar to hand-operated transmission to be provided.Some vehicles are equipped with shift paddle or other chaufeur interaction feature, it allows chaufeur give a signal request higher or lower transmitting ratio for the transmitting ratio of the automatic selection of vehicle control device, and makes engine speed and vehicle torque that associated change occur.In discrete transmitting ratio change-speed box, controller is that transmitting ratios different in discrete transmitting ratio responds this class instruction by gear shift, and this discrete transmitting ratio correspondingly regulates engine speed and at wheel place, provides associated moment of torsion to amplify.Yet, for example, in thering is the vehicle of toric transmission (CVT) or similar change speed gear box (motor vehicle driven by mixed power of power separation), because change-speed box itself can not provide discrete transmitting ratio to amplify with associated different moment of torsion, so response is more complicated.
Summary of the invention
In a plurality of embodiment, motor vehicle driven by mixed power control policy is implemented four kinds of different operation modes.Vehicle control device is for example, in response to the operation of a plurality of chaufeur interactive elements (comprise shifter bar, finder and the finder that upgrades lower category) and determine in any given time to use which kind of operation mode.In two kinds of operation modes, controller allows chaufeur selection to affect the virtual gear of the array output moment of torsion of engine speed and driving engine and one or more traction motor.According to enabling which kind of operation mode, controller can kill engine by different logics and only pass through driven by power.
In one embodiment, a kind of method of controlling motor vehicle driven by mixed power comprises: under automatic mode, control engine and traction motor, then increase wheel torque, to be transformed into gear preference pattern.Under automatic mode, wheel torque is based on pedal position and the speed of a motor vehicle.Under gear preference pattern, vehicle torque except based on pedal position and the speed of a motor vehicle also based on the revisable virtual shelves item of chaufeur.Under gear preference pattern, wheel torque reduces along with the increase of virtual shelves item.Described method can comprise to be made virtual shelves item increase and in response to the operation of the finder that lowers category, makes virtual shelves item reduce in response to the operation of the finder that upgrades.Being transformed into gear preference pattern can start by the operation of the finder that lowers category.When being transformed into gear preference pattern, described method can comprise the highest virtual shelves item of selecting moment of torsion is increased.
In another embodiment, a kind of controller for motor vehicle driven by mixed power comprises input channel, output channel and control logic.Input channel receives the indication speed of a motor vehicle, the accelerator pedal position of driver's operation, the incoming signal of the driver's operation of the driver's operation of the finder that lowers category and the finder that upgrades.Output channel transmits control signal to driving engine and at least one traction motor.Control logic is configured to control engine and traction motor under automatic mode, then increases wheel torque, to be transformed into gear preference pattern.Under automatic mode, wheel torque is based on pedal position and the speed of a motor vehicle.Under gear preference pattern, wheel torque except based on pedal position and the speed of a motor vehicle also based on the revisable virtual shelves item of chaufeur.Under gear preference pattern, wheel torque reduces along with the increase of virtual shelves item.Described controller can make in response to the operation of the finder that upgrades virtual shelves item increase and in response to the operation of the finder that lowers category, make virtual shelves item reduce.When being converted to gear preference pattern, controller can be selected the highest initial virtual shelves item that causes moment of torsion to increase.
A kind of controller for motor vehicle driven by mixed power comprises input channel, output channel and control logic.Input channel receives the lower category signal of operation of finder of the accelerator pedal position of the speed of a motor vehicle, driver's operation and indication.Output channel is configured to control engine and at least one traction motor.Control logic is configured to control engine and traction motor under automatic mode, to produce wheel torque based on pedal position and the speed of a motor vehicle; Increase wheel torque, to be transformed into gear preference pattern, wherein, wheel torque is based on the revisable virtual shelves item of chaufeur, pedal position and the speed of a motor vehicle.
Described control logic is configured to when the virtual gear given turns round with gear preference pattern, regulates wheel torque, make vehicle torque be less than its at the higher virtual gear of the next one at identical pedal position and the wheel torque under the speed of a motor vehicle.
Described control logic is configured to select available the highest initial virtual shelves item, so that while being transformed into gear preference pattern when in pedal position and the speed of a motor vehicle substantial constant in the situation that, wheel torque increase.
Described controller also comprises control logic, and described control logic is configured to when turning round under gear preference pattern, by increasing wheel torque in response to the operation of the finder that lowers category.
Described controller also comprises: input channel, and the signal of the operation of the finder that upgrades is indicated in reception; Control logic, is configured to when turning round under gear preference pattern, by reducing wheel torque in response to the operation of the finder that upgrades.
In another embodiment, a kind of motor vehicle driven by mixed power comprises compound planet gear and controller.The element of compound planet gear (comprising sun gear, Ring gear and planetary gear carrier) can drive and be connected to driving engine, one group of drive wheel and the first motor.The second motor can drive and be connected to wheel.Controller is configured to control engine and motor under automatic mode, then increases wheel torque, to be transformed into gear preference pattern.Under automatic mode, wheel torque is based on pedal position and the speed of a motor vehicle.Under gear preference pattern, wheel torque except based on pedal position and the speed of a motor vehicle also based on the revisable virtual shelves item of chaufeur.When being transformed into gear preference pattern, controller can be selected the highest initial virtual shelves item that causes moment of torsion to increase.
In another embodiment, a kind of vehicle comprises: compound planet gear, the first element of compound planet gear can drive and be connected to driving engine, and the second element of compound planet gear can drive and be connected to the first motor, and the three element of compound planet gear can drive and be connected to one group of wheel; The second motor, can drive and be connected to one group of wheel; Controller, controller and driving engine, motor, accelerator pedal, upgrade finder and the finder that lowers category communicate, described controller is configured to: under automatic mode, make driving engine and motor rotation, wherein, the clean torque responsive that is sent to one group of wheel is in the change of accelerator pedal position and the speed of a motor vehicle and change; Under gear preference pattern, make driving engine and motor rotation, wherein, the clean moment of torsion that is sent to one group of wheel also changes in response to the revisable virtual shelves item of chaufeur; In response to the operation of the finder that lowers category, from automatic mode, be converted to gear preference pattern, described conversion comprises selects initial virtual shelves item, so that be sent to clean moment of torsion clean moment of torsion increase to one group of wheel with respect to automatic mode underdrive of one group of wheel.
During being converted to gear preference pattern from automatic mode and the initial virtual gear of selecting is selected, so that the clean moment of torsion that will be sent to one group of wheel in the higher virtual shelves item of the next one is lower than be sent to the clean moment of torsion of one group of wheel with identical accelerator pedal position and the speed of a motor vehicle under automatic mode.
According to a plurality of embodiment of the present disclosure, can provide one or more advantage.For example, according to of the present disclosure for the system and method for controlling motor vehicle driven by mixed power have toric transmission or similar change speed gear box motor vehicle driven by mixed power simulation ladder transmitting ratio automatic transmission with hydraulic torque converter manually or gear preference pattern.In addition, a plurality of strategies of the present disclosure provide how mutual control to the chaufeur of motor vehicle driven by mixed power, with manually instruction power drive system rotating speed and acceleration, thereby provide the luxurious feature of improvement and motion to experience.
By the detailed description of preferred embodiment being carried out below in conjunction with accompanying drawing, above-mentioned advantage and other advantage and feature will become apparent.
Accompanying drawing explanation
Fig. 1 is the schematic diagram illustrating according to the vehicle driveline that represents embodiment, controller and the user interaction features of motor vehicle driven by mixed power of the present disclosure;
Fig. 2 is the state transition graph that the system of embodiment of the present disclosure or the operation of method are shown;
Fig. 3 is the diagram of circuit illustrating according to a plurality of embodiment operation of system or method when in normal operation pattern;
Fig. 4 is the diagram of curves illustrating according to the embodiment of representative of the present disclosure relation between the speed of a motor vehicle, accelerator pedal position and wheel torque instruction;
Fig. 5 is the diagram of curves illustrating according to the embodiment of representative of the present disclosure relation between the speed of a motor vehicle, target engine power and engine speed instruction;
Fig. 6 illustrates the diagram of circuit when the operation of system or method when (LID) operation mode is controlled in real-time gear shift according to a plurality of embodiment;
Fig. 7 is the diagram of curves illustrating according to the embodiment of representative of the present disclosure relation between the pedal position of actual accelerator pedal position, virtual shelves item or operation mode and modification;
Fig. 8 is the diagram of curves that relation between the speed of a motor vehicle according to the embodiment of representative of the present disclosure, virtual shelves item and engine power adjustment restriction (engine power clipping limit) is shown;
Fig. 9 is the diagram of circuit illustrating according to embodiment of the present disclosure operation of system or method when in motion operation mode;
Figure 10 be illustrate a plurality of embodiment of the present disclosure in specific operation mode for closing or restart the diagram of circuit of the tactful operation of driving engine; And
Figure 11 is the diagram of circuit illustrating according to a plurality of embodiment of the present disclosure operation of system or method when in SST operation mode.
The specific embodiment
As required, at this, specific embodiment of the present invention is disclosed; However, it should be understood that disclosed embodiment is only example of the present invention, the present invention can implement with multiple and alternative form.Accompanying drawing is not necessarily to scale; Can amplify or minimize some features to show the details of specific features.So concrete structure and function detail disclosed herein should not be construed as restriction, and only for instruction those skilled in the art differently implement representative basis of the present invention.
Fig. 1 schematically shows the power drive system for hybrid electric vehicle.Power drive system comprise can drive be connected to planetary gear carrier 22 explosive motor 20, can drive and be connected to the electrical generator 24 of sun gear 26 and can drive the output shaft 28 that is connected to Ring gear 30.When existing mechanical energy to flow path, can connect them between these elements with driving, substantially proportional so that the rotating speed of element is constrained to.Planetary gear carrier 22 supports one group of planetary wheel 32, and each planetary wheel is engaged in lasting engagement with sun gear 26 and Ring gear 30.Output shaft 28 directly or (for example, by differential assembly) indirectly drive wheel.
Traction motor 34 can drive and be connected to output shaft 28.Electrical generator 24 and traction motor 34 are the reversible electric machines that can convert electrical energy into the mechanical energy of rotation or the mechanical energy of rotation is converted to electric energy.Should think that term " electrical generator " and " motor " only do not limit function or the running of each motor so that describe as label.Electrical generator 24 and traction motor 34 are all electrically connected to battery 36.
The rotating speed of sun gear 26, tooth rest 22 and Ring gear 30 is linearly dependentes, and the rotating speed that makes tooth rest 22 is the weighted mean of the rotating speed of sun gear 26 and Ring gear 30.So, in this arranges, the rotating speed of driving engine 20 is not constrained to the rotating speed of output shaft 28 proportional.Alternately, can be independent of that the speed of a motor vehicle is selected or control engine rotating speed by generator speed is correspondingly set.By mechanical energy, transmit with the combination of delivery of electrical energy and make power transfer to output shaft from driving engine.During some operating modes, ignore loss in efficiency, driving engine 20 can produce than the more power of the power that transfers to output shaft the difference of power is transferred to battery 36.During other operating mode, can supplement with the battery 36 of electrical generator 24 and/or traction motor 34 combinations the power transmitting by driving engine 20, make more power transmissions to output shaft 28.
Driving engine 20, electrical generator 24 and traction motor 34 are all in response to the control signal that carrys out self-controller 38.These control signals are determined the torque capacity producing.Controller also receives from the tach signal of driving engine 20, electrical generator 24 and traction motor 34 and from the state-of-charge signal of battery 36.Controller is from the incoming signal of brake pedal 40, accelerator pedal 42, shifter bar (PRNDS) 44, bearing circle 46, the finder 48 that lowers category, upgrade finder 50 and the control button 51 reception indication driver intentions that cruise.Shifter bar 44 allow chaufeurs select to park shelves, reverse gear, neutral gear, shelves and a motion grade driving mode travel.For example, upgrade finder and the finder that lowers category can be mounted in the plectrum on bearing circle opposite side.Other the finder that upgrades for example, is known and is applicable to the present invention with the finder embodiment (other position of shifter bar) that lowers category.
In some operation mode, with respect to the change of the shift event by discrete, engine speed can change continuously in response to the variation of accelerator pedal position.Such situation (terminology) should not be construed as the use of getting rid of digitial controller (with a large amount of but control signal level of limited amount of time interval controls frequently).
Fig. 2 shows top layer (top level) state of a control.Once controller uses shifter bar 44 to select grade (D) position of travelling from state 60 beginnings and chaufeur, is converted to general mode 62.Diagram of circuit in Fig. 3 shows the running in general mode.General mode is since 64 places.Under general mode, controller repeats the operation that output torque is set, engine mode 68 is set, engine power is set and engine speed is set at 70 places at 69 places at 68 places at 66 places.Under general mode, at step 66 place, use form (for example form shown in Figure 4) to calculate target output torque based on accelerator pedal position and the speed of a motor vehicle.In Fig. 4, curve 202,204,206,208,210 and 212 shows respectively respectively the function as the speed of a motor vehicle in 0%, 20%, 40%, 60%, the 80% and 100% place wheel torque instruction of accelerator pedal position.Can calculate the speed of a motor vehicle from traction motor tachogen or wheel speed sensor.At step 68 place, use the multiple incoming signal engine mode that comprises battery charge state, outputting power instruction, accelerator pedal position and the speed of a motor vehicle be set to running or shut down.If engine mode is operation, in step 69 and 70 places, calculate target engine power and target engine speed, to transmit the output torque of expectation and to keep in the state-of-charge of battery in expectation, consumption of fuel being minimized.If battery charge state approaches target level, target engine power is set to equal by the power that transfers to wheel (can calculate from target wheel torque and the speed of a motor vehicle) so.If battery charge state is lower, target engine power is set to highlyer so, to produce extra power, battery is charged.If battery charge state is high, target engine power is arranged to lower with saving fuel.Use form (example is form as shown in Figure 5) based target engine power and the speed of a motor vehicle to calculate target engine speed.In Fig. 5, curve 214,216,218,220,222,224 and 226 shows respectively functional relation between the speed of a motor vehicle and engine speed instruction when target engine power is different.Finally, regulate the operating parameters of driving engine, electrical generator and traction motor, the target that actual output torque and engine speed trend are selected.
Referring again to Fig. 2, whenever chaufeur is enabled while lowering category finder 48, controller is just converted to real-time gear shift from general mode 62 and controls (LID, Live-In-Drive) mode 72.LID pattern allows chaufeur by selecting virtual shelves item to affect engine speed and wheel torque.By the diagram of circuit of Fig. 6, show the running of LID pattern.Once enter LID pattern, select initial virtual transmitting ratio and repeatedly carry out subsequently in step 76 and 66 ' locate for output torque is set, in step 69 ' and 78 places operation of engine power and engine speed being set and upgrading virtual transmitting ratio in step 80 and 82 at step 74 place controller.Each operation in these operations will at length be discussed hereinafter in addition.As shown in Figure 2, many situations cause controller to convert back general mode 62, and these situations comprise that the speed of a motor vehicle drops to lowering category that low threshold value is following or automatically select.In addition, when detecting to control by cruising when 51 the situation of cruising of enabling indication or the loose accelerator pedal situation of indicating by the decompression of accelerator pedal position and lasting certain schedule time of this situation are measured, controller can trigger conversion.Yet, (for example, can be by large the turning to of bearing circle 46, large driftage, pitching or roll rate such as these working outs if high chaufeur working out detected at step 84 place controller, or high longitudinal or side direction is accelerated indication), the situation of latter a type will not cause conversion.
At step 76 place, use form (example is form as shown in Figure 7) to calculate from the accelerator pedal position of measuring the accelerator pedal position of revising.The accelerator pedal position of this modification for replace step 66 ' actual pedal position to calculate target output torque.In Fig. 7, curve 240,242,244,246,248,250,252 and 254 indicates respectively for first, second, third, fourth, the 5th, the 6th, the 7th and the pedal position of the modification of the actual pedal position function of conduct of the 8th virtual gear.Select curve in Fig. 7 to simulate the unify output torque capacity of discrete transmitting ratio change-speed box of Power Train.Specifically, for the accelerator pedal position of given any non-zero, along with virtual shelves items (being 1 grade to 8 grades in this example) increase, the target output torque of generation reduces.Step 76 and 66 ' combined effect be that the running of driving engine and at least one traction motor makes the output torque of this combination corresponding to the one in a plurality of output torque functions, for the associated speed of a motor vehicle, each output torque function has different output torques at the maxim place of accelerator pedal position.
At step 74 place, select initial virtual gear.About the operation point of Fig. 7 before changing along line 236.Controller is selected the virtual shelves item corresponding to next higher curve in curve 240-254.In other words, the actual pedal position of controller based on current selected virtual shelves item, make the pedal position of revising in the virtual gear of selecting higher than actual pedal position, but the pedal position of revising in the higher virtual gear of the next one will be less than actual pedal position.For example, if operation point is 258 before changing, will select 4 grades to make operation point become a little 260.Once such effect is to guarantee to change LID pattern at constant accelerator position place into from general mode, increases wheel torque.
As shown in Figure 6, in LID mode 72, at step 69 ' locate to calculate target engine power and at step 78 place, calculate target engine speed.At step 78 place, controller uses the virtual shelves item of form (example is form as shown in Figure 8) based on the speed of a motor vehicle and current selection first to calculate the adjustment restriction for engine power.In Fig. 8, curve 262,264,266,268,270,272,274 and 276 shows respectively when virtual shelves item is different, the functional relation between the speed of a motor vehicle and engine power adjustment restriction.In addition, curve 278 represents the maxim of engine power adjustment restriction and the speed of a motor vehicle.For example, if current virtual shelves item is 4, will arranges and adjust restriction according to curve 268.If adjust restriction higher than target engine power, with adjusting restriction, replace target engine power to calculate target engine speed.When use adjusting restriction, the engine speed of lower virtual shelves item will arrange to obtain higher virtual shelves item higher.Equally, when using adjustment restriction, target engine speed can not change with the variation of accelerator pedal position.When adjusting restriction and be less than target engine power (when selecting higher virtual shelves item more likely), identical with general mode of the target engine speed in LID pattern so.Adjusting restriction does not affect the engine power that is conditioned for transmission objectives wheel torque of instruction.
Equally as shown in Figure 6, in step 80, upgrade enabling of finder or the finder that lowers category correspondingly regulate virtual shelves item of controller inspection.In step 82, controller determines whether to need automatically to regulate virtual shelves item.Specifically, can trigger and upgrade by the increase of the speed of a motor vehicle.Similarly, when the speed of a motor vehicle reduces, can indicate and lower category.Yet, as described above, when indicating the Time Controller that automatically lowers category to convert back general mode 62.In this embodiment, the automatic change that calibration autoshift standard makes virtual shelves item is than the gear shift in traditional discrete transmitting ratio automatic transmission with hydraulic torque converter more frequent (common).
Referring again to Fig. 2, when chaufeur moves on to motion (S) position by shifter bar 44, controller is just converted to mode of motion 94 from general mode 62.By the diagram of circuit in Fig. 9, show the operation of mode of motion.Controller repeats 96 and 66 ' ' locate the operation for output torque being set, engine speed being set and engine mode is set at 98 places at 99 places.For accelerator pedal is moved, provide the reaction of motion more, the accelerator pedal position of the modification shown in the heavy line 238 based on as Fig. 7 middle and upper part is calculated target output torque.Select actual accelerator pedal position and the mapping between the accelerator pedal position of modification that its value is equated at minimum value 237 places and maxim 239 places, but the value of modification is higher for all by-level.
As shown in Figure 9, algorithm Offered target engine speed like the class of algorithms of using in the use of step 99 place and general mode.Yet target engine speed for example, with respect to the value of use being increased in proportion to specified amount (10-20%) in general mode.Be different from the algorithm that engine mode is set using in general mode, as the algorithm using in mode of motion in step 98 place indication, only in stationary vehicle and while depressing brake pedal, kill engine.The engine mode that figure 10 illustrates modification arranges algorithm.If place's driving engine is current closes 100, if moving or discharging at 106 place's brake pedals at 104 place's vehicles so, at step 102 place, restart driving engine.Similarly, if driving engine is current, turn round, only at 110 place's vehicles, be static and be depressed and just at step 108 place, kill engine at 112 place's brake pedals.
As shown in Figure 2, if when in mode of motion 94 chaufeur enable upgrade finder or lower category in finder any one, controller is converted to gear speed-changing (SST) pattern 114 of selecting so.In SST pattern, as about LID pattern description, based on virtual shelves item Offered target engine torque and target engine speed.Yet, controller by maintenance SST pattern until chaufeur by controlling gear shift selector 48 or 50, reach the several seconds or travel shelves (D shelves) position and indicative of desired is left this pattern by shifter bar 44 is moved back to.By the diagram of circuit in Figure 11, show the operation of SST pattern.In step 74 ' middle use and the above-described method similarity method using (except initial operation point is along the curve 238 in Fig. 7 rather than along curve 236), initial virtual shelves item is set when entering LID pattern.So controller is selected the highest virtual shelves item, higher than in mode of motion of the pedal position of modification for this grade of item.Once this guarantees to change into SST pattern, increase wheel torque.In SST pattern, in step 80 ' locate, in response to enabling in the mode with identical in LID pattern of lower category finder 48 and the finder 50 that upgrades, regulate virtual shelves item.In addition, controller can regulate automatically in response to the change of the speed of a motor vehicle or accelerator pedal position virtual shelves item, upgrades or lowers category.When vehicle soon stops, the virtual shelves of this automatic feature item is set to 1 grade.Yet chaufeur can this selection of override by operation gear shift selector during when stationary vehicle at step 118 place.In SST pattern, engine mode depends on virtual shelves item, the speed of a motor vehicle and accelerator pedal position.At step 120 place, controller calculation engine is closed the limit, and this limit is lower than this accelerator pedal position, to enable the accelerator pedal position of driven by power (electric drive).Closing the limit is the function of outputting power demand, virtual shelves item and the speed of a motor vehicle.By the black circles in Fig. 7, show at the specific speed of a motor vehicle and outputting power demand place for the limit of closing of a plurality of transmitting ratios.When the one in enabling higher virtual shelves items (being 5-8 shelves) and accelerator pedal position are less than and close the limit, the common engine pattern algorithm 68 of use general mode '.If enable lower virtual shelves item (being 1-4 shelves) if or accelerator position higher than the tail-off limit, use more the motion shelves of addition of constraints and the algorithm 98 of LID pattern '.
As illustrated by the above-described embodiment of representative, according to a plurality of embodiment of the present disclosure, can provide one or more advantages, for example manual the or gear preference pattern of analogue step transmitting ratio automatic transmission with hydraulic torque converter in the motor vehicle driven by mixed power with toric transmission or similar change speed gear box.In addition, a plurality of strategies of the present disclosure provide how mutual control to the chaufeur of motor vehicle driven by mixed power, with manually instruction power drive system rotating speed and acceleration, thereby provide the luxurious feature of improvement and motion to experience.
Although described example embodiment above, and do not meant that these embodiment have described all possible form of the present invention.On the contrary, the word using in specification sheets is the non-limiting word of descriptive words, and should understand without departing from the spirit and scope of the present invention, can make various changes.In addition, the feature of a plurality of execution embodiment capable of being combined is to form the further embodiment of the present invention.Although a plurality of embodiment can be described as advantage being provided or being better than other embodiment for the feature of one or more expectations, but it will be understood by those skilled in the art that, depend on concrete application or enforcement, can compromise to realize to one or more features the system property of expectation.These attributes include but not limited to: the convenience of cost, intensity, durability, life cycle cost, marketability, outward appearance, packing, size, maintainability, weight, manufacturability, assembling etc.Being described to the embodiment described here lower than other embodiment or prior art enforcement for the desirable property of one or more characteristics does not have outside the scope of the present disclosure and can be expected to be useful in special applications.
Claims (6)
1. a method of controlling motor vehicle driven by mixed power, comprising:
Control engine and traction motor under automatic mode, to produce wheel torque based on pedal position and the speed of a motor vehicle;
Increase wheel torque, to be transformed into gear preference pattern, wherein, wheel torque is based on the revisable virtual shelves item of chaufeur, pedal position and the speed of a motor vehicle.
2. the method for claim 1, wherein under gear preference pattern, wheel torque reduces along with the increase of virtual shelves item.
3. method as claimed in claim 2, wherein, described method also comprises, while being transformed into gear preference pattern when in the speed of a motor vehicle and pedal position substantial constant in the situation that, selects the highest initial virtual shelves item, so that wheel torque increases.
The method of claim 1, wherein in response to the finder that lowers category operation and start described conversion.
5. as right will be gone the method as described in 1, wherein, described method also comprises, when turning round under gear preference pattern, in response to the driver's operation of the finder that lowers category, reduces virtual gear and increases wheel torque.
6. the method for claim 1, wherein described method also comprises, when turning round under gear preference pattern, in response to the driver's operation of the finder that upgrades, increases virtual gear and reduces wheel torque.
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| US13/768,068 US9108631B2 (en) | 2012-07-02 | 2013-02-15 | Hybrid vehicle and associated control method |
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| DE102015225529A1 (en) * | 2015-12-17 | 2017-06-22 | Zf Friedrichshafen Ag | Method for operating a continuously variable automatic transmission of a work machine |
| JP7363711B2 (en) * | 2020-08-07 | 2023-10-18 | トヨタ自動車株式会社 | Electric car |
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