CN103072578A - Method for operating motor car, and driving system of the motor car - Google Patents
Method for operating motor car, and driving system of the motor car Download PDFInfo
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- CN103072578A CN103072578A CN2012104117725A CN201210411772A CN103072578A CN 103072578 A CN103072578 A CN 103072578A CN 2012104117725 A CN2012104117725 A CN 2012104117725A CN 201210411772 A CN201210411772 A CN 201210411772A CN 103072578 A CN103072578 A CN 103072578A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims description 30
- 239000007858 starting material Substances 0.000 claims description 26
- 239000000446 fuel Substances 0.000 claims description 19
- 230000009467 reduction Effects 0.000 claims description 18
- 230000001141 propulsive effect Effects 0.000 claims description 16
- 230000004044 response Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 206010012374 Depressed mood Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0833—Vehicle conditions
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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
- 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
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
- B60W2030/1809—Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
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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
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/501—Vehicle speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
- F02N11/0855—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear during engine shutdown or after engine stop before start command, e.g. pre-engagement of pinion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
- F02N2200/0801—Vehicle speed
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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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
In a method for operating a motor car with a driving engine, the driving engine is an internal combustion engine. The method involves detecting the traveling speed of vehicle and an operation of a speed control unit. The driving mode is automatically selected. The sail mode above the minimum speed of the sailing mode during non-operation state of the speed control unit is selected. The roll mode above the maximum speed of sailing mode, during non-operation state of the speed control unit is selected. The invention also relates to a driving system of the motor car.
Description
Technical field
The present invention relates to the method that a kind of operation has the power actuated vehicle that drives driving engine, this driving driving engine is embodied as combustion engine, the invention still further relates to the drive system of this power actuated vehicle.
Background technology
The driving driving engine of power actuated vehicle mainly works to produce propulsive effort, and this propulsive effort is transferred at least one drive wheel to produce the displacing force of power actuated vehicle.Drive driving engine and be embodied as herein combustion engine, for example Spark Ignition Engine or diesel motor.Because combustion engine is not producing propulsive effort when operation consume fuel, people have proposed the consumption of fuel under the travel conditions that the whole bag of tricks reduces demand motive power not.
Therefore, from for example WO 2010/121861A1 is known, control the as a result operational vehicle of the authenticity examination of function or adaptive-feedrate adjustment function and/or other current vehicle operation data or vehicle status data according to the auto-speed under a kind of driving model, under this driving model, frictional engagement in the dynamical system is interrupted, and drives engine idling operation even close.DE 102 21 701 A1 have described a kind of " sliding mode ", and wherein power actuated vehicle travels or slip car with the state of disengaging of clutch, and engine speed roughly or accurately equals idling speed; As suitably, can kill engine.If Das Gaspedal and brake pedal all do not have starting, then select sliding mode; Stop sliding mode by starting braking and/or Das Gaspedal.Yet this ad hoc approach is not all to be optimum under all travel conditions.
On the other hand, slow down in order to make power actuated vehicle, especially when descent run, if drive driving engine by the frictional engagement with drive wheel, can utilize the energy of engine to consume effect.For example from DE 603 06 411 T2 and WO 2005/084995A1 this automatic mode as can be known.These methods are not suitable for all travel conditions that for example occur equally when allowing that power actuated vehicle stops according to speed.
The driving driving engine of power actuated vehicle also needs usually by the electric system supply electric energy of electrical generator to power actuated vehicle.In order to guarantee under steam electric power supply, even when driving tail-off, the energy supply system of corresponding adjustment also is necessary, and this energy supply system comprises for example larger battery and complicated controller.This has increased cost and weight, and has caused the complexity of higher degree.
The result of said method is, may produce the delay of increase between the acceleration that finds of the propulsive effort supply of propulsive effort request and drive system and/or power actuated vehicle.For example, owing to the reaction time of sensor and actuator, owing to the time length of processing signals in the treater and owing to data transmission, produce certain delay.Reset the needed time after sizable contribution of this delay closed from combustion engine, particularly, in some cases, self-starting motor is connected to combustion engine the required time, be used for the required time of starting starter and combustion engine and set up the required time of torque.According to the length and the travel conditions that postpone, this delay may cause driver's unhappiness.The response characteristic of this delay and the weakening followed is always not acceptable.
Summary of the invention
The purpose of this invention is to provide the method that a kind of operation has the power actuated vehicle that drives driving engine, this driving driving engine is embodied as combustion engine, and a kind of drive system of avoiding as much as possible the power actuated vehicle of above-mentioned shortcoming is provided.Particularly, the purpose of this invention is to provide a kind of method and drive system, the method and drive system have reduced consumption of fuel, and the complexity adjustment of energy supply system needn't be arranged, and can not produce the remarkable weakening of the response characteristic of drive system.
Purpose of the present invention realizes by method and the drive system of the following stated:
A kind of operation has the method for the power actuated vehicle that drives driving engine, this driving driving engine is embodied as combustion engine, wherein, detect the speed of power actuated vehicle and the starting of speed control unit, and automatically select driving model, when the speed control unit unstart, when being higher than the minimum velocity of sliding mode, select sliding mode
Wherein
When the speed control unit unstart, when being higher than the maximum speed of sliding mode, select to slip the car pattern.
A kind of drive system of power actuated vehicle, wherein, this drive system has the transmission system that drives driving engine, is used for propulsive effort is transferred at least one drive wheel of power actuated vehicle, wherein, transmission system has the power-transfer clutch that can automatically actuate and the control setup that is used for controlling the power-transfer clutch that drives driving engine and can automatically actuate, wherein, control setup is designed to carry out wherein described method of aforementioned claim.
Power actuated vehicle according to the present invention has the driving driving engine that is embodied as combustion engine.The drive system of power actuated vehicle comprises that also the propulsive effort that combustion engine is produced is transferred to the transmission system of at least one drive wheel, transmission system have for realize in a controlled manner and/or drives interrupts driving engine and drive wheel between the device of frictional engagement, the power-transfer clutch that described device specifically can be actuated automatically.Transmission system also can comprise change-speed box, and this change-speed box may be embodied as hand-operated transmission or automatic transmission with hydraulic torque converter.
According to the present invention, detect the corresponding present speed of power actuated vehicle.In addition, detect the starting of at least one speed control unit, this speed control unit specifically can be for example operator's control element of speed control system of Das Gaspedal or brake pedal or other.The starting of preferred detection Das Gaspedal and brake pedal.The equally by this way unstart of detection speed control setup specifically, namely detects whether unstart Das Gaspedal of driver and/or the brake pedal of power actuated vehicle equally.
According to starting and the unstart of the speed that detects and speed control unit, and (as applicable) basis further parameter, the automatically driving model of selector motor vehicle.In the present invention, when speed is lower than the maximum speed of still-mode, the still-mode of the driving engine stop of selector motor vehicle then.Under still-mode, the frictional engagement that drives between driving engine and the drive wheel is interrupted, specifically by opening the power-transfer clutch that can automatically actuate; In the situation of the automatic transmission with hydraulic torque converter with torque converter, the power-transfer clutch in the transmission system also can be closed.The maximum speed of still-mode specifically can be 0,, only carries out still-mode under the quiescence of power actuated vehicle that is.Yet the maximum speed of still-mode can not be 0 also, can be about 5km/h for example; consequently; even in the situation of travelling very lentamente, if the driving power of demand motive driving engine does not produce or keep the displacing force of power actuated vehicle, power actuated vehicle also is in still-mode.This can be the situation in the startup of brake pedal of haveing nothing to do.
If speed is higher than the minimum velocity of sliding mode, when the speed control unit unstart, select sliding mode.In sliding mode, combustion engine turns round at idling mode, is namely turning round near idling speed at least; Frictionally engaging within this and interrupt in the transmission system, the power-transfer clutch that especially can automatically actuate is opened.Combustion engine also can at least temporarily move under the rotating speed corresponding with the driving engine side drive axle rotating speed of change-speed box, consequently, can realize shockproof (jolt-free) conversion to the driving model with closed frictional engagement.The minimum velocity of sliding mode is higher than the maximum speed of still-mode, and for example, the minimum velocity of sliding mode is higher than about 8km/h, or preferably is higher than about 15km/h.
According to the present invention, when speed is higher than the maximum speed of sliding mode when the speed control unit unstart, specifically, namely when both un-activation Das Gaspedals of driver also un-activation brake pedal, select slide car pattern.Therefore the minimum velocity of car pattern of slipping specifically equals the maximum speed of sliding mode.The maximum speed of sliding mode can be for example about 40 to 90km/h, is preferably about 50km/h, but also can be 108km/h for example.Under slide car pattern, the driving driving engine of power actuated vehicle and the frictional engagement between one or more drive wheel are interrupted; Under slide car pattern, drive engine stop.
When allowing that power actuated vehicle when initial velocity slips car to relatively low terminal velocity or reach quiescence, can use the method according to this invention valuably.Yet when from the quiescence descent run or from initial velocity to relatively high terminal velocity descent run, this method also is useful.Slip car during to halted state when at descent run, and perhaps for example even under other travel conditions of Das Gaspedal unstart, the method according to this invention also can be used valuably.
For the operation of fuel saving pattern, it will be useful as far as possible often and as far as possible longways closing combustion engine; Yet this for example will make by the delay between the perceptible acceleration of the propulsive effort request of starting Das Gaspedal and power actuated vehicle and usually be increased to unacceptable degree.
According to the present invention, if find in the speed range of the maximum speed that is higher than sliding mode, to use the car pattern of slipping, can realize the fuel saving operational mode of power actuated vehicle and the weakening of the response characteristic that do not have to find.Its realization is because driving driving engine at higher speed range closes fully, turns round at idling mode and drive driving engine in the middle speed scope.Obviously, and compare in the middle speed scope, the delay between the supply of higher speed range inner drive request and propulsive effort can be tolerated to a greater extent.
Therefore, for example be lower than in the situation of about 80km/h in speed, can accept to be less than the delay of 100ms, and in the speed range more than about 150km/h, can tolerate the perceptible deterioration that does not have response characteristic greater than the delay of 300ms.Under still-mode, can accept the delay of about 400ms.According to the present invention, delay in the middle speed scope is minimized, this is owing to move at idling mode at this scope Internal Drive Generator, thus after for example by the propulsive effort request of starting Das Gaspedal without any need for the time self-starting motor with make it reach idling speed.On the other hand, the sliding mode in the middle speed scope is so that might be to move in the mode of economy aspect the fuel, and the slide car pattern in the more speed scope is so that might be to move in optimized mode aspect the fuel.
Therefore, according to the present invention, the response characteristic of the drive system of power actuated vehicle is optimized, and considers simultaneously the operational mode of economy aspect fuel.In addition, guarantee under many circumstances the supply of electric energy and need not to change, consequently do not need the complexity adjustment of the electrical energy supply system of power actuated vehicle.Therefore, when power actuated vehicle entered halted state or descent run, the controlling machine motor vehicle even the limited adjustment of electric system is arranged, also can be implemented in the economic especially driving model in fuel aspect and response characteristic and significantly not worsen as follows.
In still-mode and/or the car pattern of slipping, electric starter can be connected to the combustion engine of power actuated vehicle valuably, for example engages by starter power-transfer clutch closure or starter.Therefore, before the switching that enters another driving model occured, electric starter meshed with driving driving engine, and this can be by the start trigger of for example Das Gaspedal.Therefore, when needed, with starter be connected to combustion engine when not required between.This has further improved the response characteristic of drive system.
The maximum speed of still-mode can equal the minimum velocity of sliding mode, when the speed control unit unstart, selects sliding mode more than the speed at this.Yet, a preferred embodiment of the method according to this invention, the minimum velocity of sliding mode is higher than the maximum speed of still-mode, and is higher than the maximum speed of still-mode and during less than the minimum velocity of sliding mode, selects the jogging pattern when speed.In the jogging pattern, between the one or more drive wheels that drive driving engine and power actuated vehicle, there is frictional engagement.Therefore, drive driving engine and move under this pattern, but in the rotating speed operation corresponding to low speed, in addition, this rotating speed may depend on the slip of the torque converter that the transmitting ratio of change-speed box and (as applicable) are depended on Automatic Transmission and the position of Das Gaspedal.This provides particularly advantageous response characteristic when opening throttle.
As selecting substituting of jogging pattern, the further embodiment of the method according to this invention is when speed is higher than the maximum speed of still-mode and during less than the minimum velocity of sliding mode and speed control unit unstart, also can selects to slip the car pattern.This provides driving model economic especially aspect fuel.
The a particularly preferred embodiment of the method according to this invention is when speed is higher than the maximum speed of still-mode and during less than the minimum velocity of sliding mode and speed control unit unstart, selects the involuntary speed reduction pattern.In the involuntary speed reduction pattern, between the one or more drive wheels that drive driving engine and power actuated vehicle, there is frictional engagement; To the fuel supply failure that drives driving engine.Drive driving engine this moment and be higher than the rotating speed operation of idling speed.In this pattern, drive driving engine itself and be used for making power actuated vehicle to slow down.This driving model itself is known, for example " uses the Jake brake of hypervelocity stop control lever valve ".The power-transfer clutch of electric starter is opened.The maximum speed of involuntary speed reduction pattern can be for example about 30 to arrive 70km/h.Because the involuntary speed reduction pattern can realize brake action in simple and gentle mode, especially when driver's unstart Das Gaspedal or brake pedal.
The maximum speed of still-mode can equal the minimum velocity of involuntary speed reduction pattern.Yet the minimum velocity of involuntary speed reduction pattern can be higher than the maximum speed of still-mode valuably; When speed is between the maximum speed of the minimum velocity of involuntary speed reduction pattern and still-mode, can use the jogging pattern in this case.
In preferred mode, speed control unit comprises brake pedal, selects in this case further driving model when brake pedal starts.Even open by the starting brake pedal or the situation of assisted deceleration process under, further driving model is also allowed a kind of driving model especially economic aspect fuel and is not had the complexity adjustment of power actuated vehicle electric system.If the maximum speed of sliding mode determines that this also is particularly useful for being higher than the speed conditions of this speed.
In particularly preferred mode, further driving model is the active deceleration mode.Under this driving model, the driving driving engine of power actuated vehicle and the frictional engagement between one or more drive wheel are closed, and to the fuel supply failure that drives driving engine.Therefore, this driving model is corresponding to the involuntary speed reduction pattern, but brake pedal starts in the case.When brake pedal starts, also can open initiatively deceleration mode, therefore can remain valid, not have the further starting of brake pedal until open further driving model.
As a kind of of this substituted, further driving model also can dispose in the following manner, namely drives frictional engagement between one or more drive wheels of driving engine and power actuated vehicle and interrupts and drive engine stop.This is corresponding to slipping the car pattern, and still in this case, if open further driving model by the starting brake pedal, then brake pedal starts or started.In preferred mode, the starter power-transfer clutch of electric starter is closed under this driving model, and consequently electric starter is connected to the driving driving engine, and, when the request propulsive effort, for example when Das Gaspedal is started, can realize driving the special fast speed starting of driving engine.
Selectively, in further driving model, the frictional engagement that drives between at least one drive wheel of driving engine and power actuated vehicle can be interrupted, and drives driving engine and can turn round at idling mode, that is, and in fact in idling speed.This is corresponding to sliding mode, but in the case, starts simultaneously brake pedal, has perhaps started brake pedal opening further driving model,
As further substituting, further driving model also may be embodied as following mode, namely, specifically by opening the power-transfer clutch that can automatically actuate in the transmission system, interrupt the driving driving engine of power actuated vehicle and the frictional engagement between one or more drive wheel, and the driving driving engine moves under the rotating speed corresponding with the driving engine side drive axle rotating speed of change-speed box.Therefore, under this pattern, can realize the shockproof recovery of frictional engagement or the shockproof closure of power-transfer clutch.
Also can further implement several or all above-mentioned substituting in continuous parameters ground according to speed and (as applicable).Particularly, before the frictional engagement recovery that drives between driving engine and at least one drive wheel, driving driving engine can move under the rotating speed corresponding with the driving engine side drive axle rotating speed of change-speed box.This has realized without the shockproof conversion between the driving model that drives the frictional engagement between driving engine and the drive wheel and the driving model that the frictional engagement between driving driving engine and the drive wheel is arranged.
The drive system of power actuated vehicle of the present invention comprises driving driving engine and transmission system, this transmission system is used at least one the drive wheel transmission propulsive effort to power actuated vehicle, especially to two drive wheels, perhaps in the situation of all-wheel drive vehicles, to all four drive wheel transmission propulsive efforts.Transmission system comprises for interrupting or the closed power-transfer clutch that can automatically actuate that drives the frictional engagement between driving engine and at least one drive wheel.Transmission system also can have change-speed box, and this change-speed box can be hand-operated transmission or automatic transmission with hydraulic torque converter or the automatic stepless speed variator of predefined activation point are arranged for example.
According to the present invention, drive system also comprises control setup, and this control setup is used for the power-transfer clutch that can automatically actuate that control drives driving engine and is designed to carry out method of the present invention.For this purpose, this control setup specifically has signal input, and this signal input is for detection of the signal of the speed of machine representation motor vehicle and represent for example signal that starts of Das Gaspedal and/or brake pedal of at least one speed control unit.Usually in order to show to the driver or detect these signals in order to control other system that these signals can the controlled device utilization.Control setup also comprises processor device and control setup, this processor device is determined driving model according to the starting of speed and at least one speed control unit, and this control setup is used for power-transfer clutch, combustion engine and (as applicable) electric starter and starter power-transfer clutch that starting can be actuated automatically.Control setup also may be embodied as the part of engine controller.
Description of drawings
Illustrate in more detail the present invention below with reference to accompanying drawing with way of example, wherein:
Fig. 1 has showed the set corresponding to the driving strategy of the exemplary embodiment of method of the present invention.
The specific embodiment
Fig. 1 shows five kinds of different driving strategies, and according to the present invention, power actuated vehicle can be according to the operation of this strategy, and the drive system of starter motor vehicle correspondingly.In the accompanying drawings, the present speed of power actuated vehicle is plotted in the top.Show different strategy 1 to 5 on the right side, by the numeral of top, corresponding hurdle.
In all driving strategies, be lower than speed v
1Speed and especially quiescence under, drive drive system in the mode of carrying out still-mode (SSS, " static starting stops ").Still-mode is defined as the frictional engagement interruption of transmission system; In the situation of the automatic transmission with hydraulic torque converter with torque converter, can be by the closed frictional engagement of torque converter.At still-mode, the combustion engine that is used for the driving machine motor vehicle stops; Can disconnect the starter of combustion engine and being connected of combustion engine by opening the starter power-transfer clutch.If the propulsive effort request by the starting Das Gaspedal is arranged, as applicable, after starter power-transfer clutch closure, by the starter cranking internal combustion engine, and the power-transfer clutch of opening in the closed transmission system, and/or can realize the manual closing power-transfer clutch.
According to strategy 1, be higher than the speed v corresponding with the minimum velocity of the maximum speed of still-mode and sliding mode
1, and be lower than the speed v corresponding with the minimum velocity of slide car pattern with the maximum speed of sliding mode
4The time, if sliding mode (SAIL) is then selected in the equal unstart of brake pedal and Das Gaspedal.At sliding mode, the frictional engagement of transmission system is interrupted.Driving driving engine specifically turns round in idling speed.Starter is not connected to the driving driving engine.Be higher than speed v
4The time, if the car pattern of slipping (RSS, " the car starting of slipping stops ") is then used in the equal unstart of brake pedal and Das Gaspedal.Slipping the car pattern, control setup drives drive system as follows, for example interrupts the frictional engagement of transmission system by opening power-transfer clutch, and stops to drive driving engine.For example by closed starter power-transfer clutch or the starter of joint, can make starter be connected to the driving driving engine, so that where necessary, for example when Das Gaspedal was started, starting drove driving engine.Opposite with sliding mode, in slide car pattern, drive engine stop.Can use and slip the car pattern until the maximum speed v of power actuated vehicle
5Under this background, v
5Can be the maximum speed that power actuated vehicle can reach, but v
5Also can be lower.As applicable, at v
5With maximum speed v
MaxBetween also can use further strategy.
Conversion from a driving model to another driving model can occur by change speed, for example, when allowing vehicle stop by slowing down, perhaps during descent run by accelerating.Same, can finish driving model by starting Das Gaspedal or brake pedal, perhaps make economic driving model ineffective treatment to finish driving model by means of the software of vehicle or the switch (for example, starting/stopping, ON/OFF) of operator's control.The reason that can change pattern more than one may be arranged, the for example starting of aforesaid operations person master cock, the charge condition for passenger's traveling comfort setting and/or air-conditioning setting, battery, emission control, highly (sea level elevation), vehicle travel wherein, ambient temperature, engine temperature, and consequently (as applicable) reset and slow down.
According to strategy 2, the maximum speed v of still-mode
1Minimum velocity corresponding to jogging pattern (CREEP); The maximum speed v of jogging pattern
2It is the minimum velocity of sliding mode.Can clearly be seen that among Fig. 1, according to strategy 2, at minimum velocity and the maximum speed v of jogging pattern
1, v
2Between select the jogging pattern.In the jogging pattern, the frictional engagement that drives between driving engine and the drive wheel is closed, drive driving engine in corresponding rotating speed operation, and starter disconnects from driving driving engine.Maximum speed v in the jogging pattern
2More than, it is corresponding with driving tactful 1 to drive strategy 2.
According to strategy 3, be higher than the maximum speed v of still-mode when speed
1But the minimum velocity v less than the sliding mode that is applicable to this situation
3Situation under, if driver's unstart brake pedal or Das Gaspedal are then used involuntary speed reduction pattern (passive DFSO, " deceleration fuel cutoff ").In the involuntary speed reduction pattern, cause frictional engagement in the transmission system by the corresponding power-transfer clutch of closure, consequently, drive the rotating speed of engine running corresponding to present speed and corresponding to the gear or each activation point that engage respectively, as applicable, also consider the slip of the torque converter of automatic transmission with hydraulic torque converter simultaneously.Yet, to the fuel supply failure of combustion engine, therefore the deceleration effect of driving engine occurs, according to strategy 3, use this effect control to enter and stop or descent run.Starter is preferably and is free of attachment to the driving driving engine, but starter also can engage.Be higher than v in speed
3Situation under, it is corresponding with driving tactful 1 to drive strategy 3.
As shown in Figure 1, be higher than speed v when speed
2The time, it is corresponding with driving tactful 3 to drive strategy 4.According to strategy 4, speed v
2Below select jogging pattern, in the case v
2Represent the minimum velocity of involuntary speed reduction pattern, but it is higher than the maximum speed v of still-mode
1
At last, according to strategy 5, at v
1And v
2Between speed range, namely between the minimum velocity of the maximum speed of still-mode and sliding mode, and at v
4Above speed range namely more than the maximum speed of sliding mode, all uses the car pattern of slipping.
At still-mode or be lower than under the low-down speed of 5km/h, relative long delay, for example 400ms between the starting that can tolerate Das Gaspedal and the perceptible acceleration.Therefore, under this driving condition, if the still-mode of the driving tail-off of power actuated vehicle is then used in the equal unstart of Das Gaspedal and brake pedal.
When speed reaches about 60km/h, can accept about 70 to 80ms delay, when speed reaches about 100km/h, can accept to reach the delay of about 160ms, and not have the obvious deterioration of the response characteristic of drive system.Therefore, in this speed range, it is favourable keeping the operation of combustion engine, even demand motive power not.This realizes by means of sliding mode or involuntary speed reduction pattern.Therefore, when resetting, in most of the cases produce the delay that is not more than given value about 50 to 100ms.Like this, reduce consumption of fuel, but avoided the obvious deterioration of response characteristic.
When speed is higher than about 100km/h, relative long delay between the starting that can tolerate Das Gaspedal and the perceptible acceleration, about 260ms when 150km/h for example, about 400ms when 190km/h.Because therefore use slide car pattern can realize consuming optimized driving model, and usually can accept owing to resetting the delay that reaches 450ms that drives the driving engine generation in this speed range.
This has brought a kind of operational mode of power actuated vehicle, and this pattern integral body has the consumption of minimizing, and wherein the response characteristic of drive system does not obviously worsen.In addition, this has reduced the adjustment of necessity of making in order to ensure the energy supply to electric system minimizes.
Speed v
1To v
5In All Policies, need not to be identical.Speed v
1To v
5Also can depend on the further parameter that characterizes corresponding travel conditions.Each strategy can dispose as follows, namely works as speed and equals in the situation of maximum speed or minimum velocity, selects the relatively low or relatively high-speed driving model that distributes.To the situation of relatively high-speed conversion with compare to the situation of relative low velocity conversion, select the speed of another driving model also can be different.
When brake pedal starts, can select respectively the driving model (not shown in figure 1), deceleration mode initiatively for example, initiatively deceleration mode is corresponding with the involuntary speed reduction pattern for this, still comprises the extra braking effect of service brake.Selected driving model also can depend on the further parameter of present speed and (as applicable) vehicle and travel conditions.In addition, the driver specifically can cause to the variation of normal driving pattern (not shown equally among Fig. 1) by the starting Das Gaspedal, in this normal driving pattern, the propulsive effort that produces by the position according to Das Gaspedal accelerates power actuated vehicle, and perhaps power actuated vehicle remains on constant speed.
Claims (13)
1. an operation has the method for the power actuated vehicle that drives driving engine, this driving driving engine is embodied as combustion engine, it is characterized in that, detect the speed of power actuated vehicle and the starting of speed control unit, and automatically select driving model, when the speed control unit unstart, when being higher than the minimum velocity of sliding mode, select sliding mode
Wherein
When the speed control unit unstart, when being higher than the maximum speed of sliding mode, select to slip the car pattern.
2. method according to claim 1,
It is characterized in that
When being lower than the maximum speed of still-mode, select still-mode.
3. method according to claim 1 and 2,
It is characterized in that
In still-mode and/or the car pattern of slipping, electric starter is connected to combustion engine.
4. according to wherein described method of aforementioned claim,
It is characterized in that
When being lower than the minimum velocity of sliding mode in the maximum speed that is higher than still-mode, select jogging pattern or slide car pattern, in described jogging pattern, between at least one drive wheel that drives driving engine and power actuated vehicle, have frictional engagement.
5. according to wherein described method of aforementioned claim,
It is characterized in that
When being lower than the minimum velocity of sliding mode in the maximum speed that is higher than still-mode, when the speed control unit unstart, select the involuntary speed reduction pattern, in this involuntary speed reduction pattern, there is frictional engagement between at least one drive wheel of driving driving engine and power actuated vehicle, and to the fuel supply failure that drives driving engine.
6. according to wherein described method of aforementioned claim,
It is characterized in that
When being lower than the minimum velocity of sliding mode, when the speed control unit unstart, select the involuntary speed reduction pattern, in this involuntary speed reduction pattern, there is frictional engagement between at least one drive wheel of driving driving engine and power actuated vehicle, and to the fuel supply failure that drives driving engine, and, when being higher than the maximum speed of still-mode in the minimum velocity that is lower than the involuntary speed reduction pattern, select the jogging pattern, in this jogging pattern, between at least one drive wheel that drives driving engine and power actuated vehicle, there is frictional engagement.
7. according to wherein described method of aforementioned claim,
It is characterized in that
Speed control unit comprises brake pedal, wherein, selects further driving model when brake pedal starts.
8. according to the described method of aforementioned claim,
It is characterized in that
Described further driving model is the active deceleration mode, wherein, has frictional engagement between at least one drive wheel that drives driving engine and power actuated vehicle, and to the fuel supply failure that drives driving engine.
9. method according to claim 7,
It is characterized in that
In further driving model, the frictional engagement between at least one drive wheel of driving driving engine and power actuated vehicle is interrupted, and drives the engine stop operation.
10. according to the described method of aforementioned claim,
It is characterized in that
In further driving model, electric starter is connected to combustion engine.
11. method according to claim 7,
It is characterized in that
In further driving model, the frictional engagement between at least one drive wheel of driving driving engine and power actuated vehicle is interrupted, and the driving driving engine moves at idling mode.
12. method according to claim 7,
It is characterized in that
In further driving model, the frictional engagement between at least one drive wheel of driving driving engine and power actuated vehicle is interrupted, and the driving driving engine moves under the rotating speed corresponding with the driving engine side drive axle rotating speed of change-speed box.
13. the drive system of a power actuated vehicle, it is characterized in that, this drive system has the transmission system that drives driving engine, is used for propulsive effort is transferred at least one drive wheel of power actuated vehicle, wherein, transmission system has the power-transfer clutch that can automatically actuate and the control setup that is used for controlling the power-transfer clutch that drives driving engine and can automatically actuate, wherein, control setup is designed to carry out wherein described method of aforementioned claim.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011085151.8 | 2011-10-25 | ||
| DE102011085151A DE102011085151A1 (en) | 2011-10-25 | 2011-10-25 | Method of operating motor car, involves selecting sail mode above minimum speed of sailing mode, and selecting roll mode above maximum speed of sail mode, during non-operation state of speed control unit |
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| CN103072578A true CN103072578A (en) | 2013-05-01 |
| CN103072578B CN103072578B (en) | 2016-09-07 |
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| CN104696130A (en) * | 2013-12-06 | 2015-06-10 | 大众汽车有限公司 | Methods for starting a combustion engine of a motor vehicle and motor vehicle |
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| JP6354778B2 (en) * | 2016-03-24 | 2018-07-11 | トヨタ自動車株式会社 | Control device for vehicle power transmission device |
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Also Published As
| Publication number | Publication date |
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| DE102011085151A1 (en) | 2013-04-25 |
| CN103072578B (en) | 2016-09-07 |
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