CN103362664B - Method for producing controlled output from the clutch position detecting system of motor vehicles - Google Patents

Method for producing controlled output from the clutch position detecting system of motor vehicles Download PDF

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Publication number
CN103362664B
CN103362664B CN201310117172.2A CN201310117172A CN103362664B CN 103362664 B CN103362664 B CN 103362664B CN 201310117172 A CN201310117172 A CN 201310117172A CN 103362664 B CN103362664 B CN 103362664B
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CN
China
Prior art keywords
clutch pedal
clutch
state
pedal position
movable threshold
Prior art date
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Active
Application number
CN201310117172.2A
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Chinese (zh)
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CN103362664A (en
Inventor
T·P·彼得里迪斯
C·E·派德勒
D·海斯凯兹
I·哈莱罗恩
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Ford Global Technologies LLC
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Ford Global Technologies LLC
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Publication of CN103362664A publication Critical patent/CN103362664A/en
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Classifications

    • 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
    • F02N11/0822—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to action of the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18018—Start-stop drive, e.g. in a traffic jam
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/08—Regulating clutch take-up on starting
    • 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
    • B60W2540/14—Clutch pedal position
    • 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
    • F02N2200/0802—Transmission state, e.g. gear ratio or neutral state
    • 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
    • F02N2200/10—Parameters used for control of starting apparatus said parameters being related to driver demands or status
    • F02N2200/103—Clutch pedal position
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/31413—Clutch pedal position
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/31413—Clutch pedal position
    • F16D2500/3142—Clutch pedal position rate
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70422—Clutch parameters
    • F16D2500/70424—Outputting a clutch engaged-disengaged signal
    • 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

Abstract

The present invention discloses a kind of method, wherein when the position of clutch pedal is defined in the travel of clutch transition zone that clutch pedal position can be one of state of forcing down and release shape, movable threshold is on the side of the clutch pedal position state opposite with current clutch pedal state away from the small distance of the side one of clutch pedal position.If clutch pedal position is moved and by the movable threshold towards movable threshold by this way, state will change to another state from current state.If clutch pedal position moves away the threshold value, the threshold value will follow clutch pedal in the way of trailing.

Description

Method for producing controlled output from the clutch position detecting system of motor vehicles
Technical field
The present invention relates to the motor vehicles with explosive motor, more particularly to based in part on clutch Engagement state is automatically stopped and starts the motor vehicles of the system of the explosive motor.
Background technology
It is known to provide the motor vehicles with manual transmission, and it has motor-driven for being automatically stopped and being activated in this Vehicle provides the stop-start system of the explosive motor of driving force.
Whenever judging to have an opportunity to stop explosive motor, stop-start system will be automatically stopped explosive motor, with Just improve fuel consumption and reduce the emission from engine.
For manual transmission start-stop application, " clutch pedal forces down/clutch pedal release " threshold value is generally used To represent driver drives away car when clutch is depressed intention, therefore start-stop system can start engine and rise It is dynamic.Same threshold value can also be used to indicate when that driver has been detached from clutch pedal and wants remains stationary foot It is enough long to cause that start-stop system allows hand over engine to closing, to save fuel.
Clutch pedal release conditions be typically used as start-stop system run it is related to the stop-start system true The condition that reality/reasonability (plausibility) is checked.This authenticity test setting is into before start-stop is enabled Be must pass through once in each crucial-circulation (key-cycle).One example of this authenticity test is, for known Gearratio, checks gear sensor signal and the estimation to current driven gear according to the ratio between engine speed and car speed It is whether consistent.If this test passes through, represent that gear sensor correctly works.
When being tested in order to continuously carry out it is this compare test, between clutch disk must without slide, That is, clutch must be engaged.Represent that the condition that power train is fully engaged is to check whether clutch pedal is released through to sting Chalaza (bite-point).Therefore, as long as " clutch pedal forces down/clutch pedal release " threshold value is disposed relative to occlusion More-the position of releasing the pedal of point, clutch pedal release conditions can serve as carrying out the condition of the test.
Being forced down using this fixed clutch pedal/clutch pedal release threshold value in the case of its problem be to deposit It is compromise with cornering ability attribute in the threshold value starting/stopping availability according to calibration.In order to force down clutch in driver Time starting engine as much as possible is provided during pedal, it is desirable to pedal travel as high as possible is set, for example, forces down 10%.This It is not force down the very remote position of clutch pedal from fully released position to start engine starting driver.It is this to set Put the motor starting characteristic or the serious hope to starting for improving and being aware of.Threshold value is located very close to the top of pedal travel A problem be that its pin is shelved on clutch by many drivers (actual test shows about 35% to 40% order of magnitude) On pedal, sometimes it is called control/pin and parks (riding) clutch, or in the case where clutch is fully engaged in gear During traveling and/or when clutch engagement and decelerator are in stationary vehicle in the case of neutral, and therefore will always exceed threshold Value.
Fig. 2 shows three kinds of clutch states, discharges, forces down (press) and pressure (depress), and between state Switching threshold.These three states are generally used in neutral parking start-stop application now.
In " R " area, clutch pedal is considered as release, that is to say, that clutch is necessarily engaged, in " D " area, clutch Device pedal be considered as pressure and clutch necessarily depart from, and be considered as being depressed and root in " P " area clutch pedal Position clutch according to clutch in " P " area can depart from or engage.
Most significant threshold value is being forced down and release conditions between, by ThRPRepresent.
Four kinds of possible situations are considered now, in the first situation ThRPClutch steps on stroke 10% is configured to, Two kinds of situation ThRPIt is configured to clutch and steps on stroke dynamic 30% and driver completely to remove its pin from clutch pedal, In the third situation ThRPIt is configured to clutch and steps on 10% and driver the control clutch pedal of stroke so that it keeps pressure Low clutch steps on the 25% of stroke, in the 4th kind of situation ThRPIt is configured to 30% and the driver control that clutch steps on stroke Clutch pedal causes that it keeps forcing down clutch steps on stroke 25%.
Start in the first scenario by rapidly and can obtain for authenticity test time；
Starting in the latter case not to respond to, because in order to realize that starting clutch pedal must be depressed 30%.But there is the complete time to be tested for authenticity；
Engine will not stop in a third case, because will not generally cross threshold value ThRPAnd therefore can not send out Raw authenticity examination；And
In the fourth case will start will rapidly and have the time for authenticity test.
Therefore, the problem that situation is present in second and the 3rd is to can result in one or more of poor being aware of Stop-start performance, such as workability of the pressure of start-stop operation and authenticity are tested and can not cause stop-start The deactivation of system, then may cause driver to obscure.
The content of the invention
It is an object of the present invention to provide a kind of for controlling to be arranged on the motor vehicles with manual transmission The improved method and equipment of the stop-start operation of engine, issue noted above is minimized or eliminated and carried above by it The problem for arriving.
According to the first aspect of the invention, there is provided a kind of method that controlled output is produced from clutch position detecting system, Wherein the method includes the position of the clutch pedal of monitoring motor vehicles, what restriction was limited by the scope of clutch pedal position Transition zone, the controlled output described in the transition zone is to force down state by clutch pedal release conditions and clutch pedal to constitute Two kinds of alternating clutch pedal position states in one kind, set and offset with the movable threshold of clutch pedal starting position, If passing through the threshold value, when the clutch pedal position is in the transition zone, clutch pedal position shape will be caused The change of state, and if the movable threshold is through, then change to another shape the controlled output from current state State.
The method can also include setting the peak excursion of the movable threshold and the clutch pedal position.
If the state of the clutch pedal is the release conditions, institute at the clutch pedal starting position Stating the amplitude of movable threshold can be more than the amplitude of the clutch pedal starting position.
If the state of the clutch pedal is described to force down state, institute at the clutch pedal starting position Stating the amplitude of movable threshold can be less than the amplitude of the clutch pedal starting position.
If clutch pedal position is in transition zone, if the method can also include final clutch pedal position Less than movable threshold, then it is release to define the clutch pedal position state.
If clutch pedal position is in transition zone, if the method can also include final clutch pedal position More than or equal to movable threshold, then the clutch pedal position state is defined to force down.
When the clutch pedal position and the movable threshold both of which are in the transition zone, the method can be with If moving away the movable threshold from the clutch pedal starting position including the clutch pedal position, move The movable threshold is to keep the predetermined migration with the clutch pedal position.
It is described if moved towards the movable threshold from clutch pedal starting position from the clutch pedal position The amplitude of movable threshold can keep identical, make a reservation for until the clutch pedal position has moved out the movable threshold Distance and position.
The lower end of the transition zone can be defined by clutch pedal position lower limit, and upper end can be by clutch pedal position The upper limit is put to define.
Release area can by one end by clutch fully released position define and upper end by gauge under clutch pedal position Fixed clutch pedal position scope is limited, and when the clutch pedal position is in the release area, the control System output can always indicate release clutch pedal position state, and force down area can by one end by clutch pedal position Put that the upper limit is defined and clutch pedal position scope of the opposite end by fixing that upper threshold value is limited is limited, and whenever the clutch In described forcing down in area, the controlled output can always indicate the clutch pedal position state forced down to pedal position.
Pressure area can be by one end by fixing upper threshold value to define and opposite end is defined by clutch pedal fully depressed position Clutch pedal position scope limit, and when the clutch pedal position is in the pressure area, the control Output can always indicate the clutch pedal position state of pressure.
The movable threshold can be limited at one end by the movable threshold with the skew of the clutch pedal starting position The conversion window that the position of value is defined and clutch position is defined by described in opposite end, and the conversion window is total It is the side for being located at the clutch position area in the beginning clutch position towards another clutch position state.
The method can also include whenever the movable threshold is calculated, just adjusting one amount of very little of the movable threshold To allow unintentional clutch pedal position to change.
Adjusting the movable threshold can include, whenever the movable threshold is calculated, be increased by being stepped on from the clutch Amount of the plate starting position to the skew very little of the movable threshold.
If the amplitude of the movable threshold is more than the beginning clutch position, institute is added to by by the amount of the very little The currency of movable threshold is stated, the skew can be increased.
Alternatively, if the amplitude of the movable threshold be less than the beginning clutch position, by from it is described can The currency of dynamic threshold value subtracts the amount of the very little, and the skew can be increased.
The amount of the very little can be less than the 1% of the value of the skew.
The method can also include for the controlled output being supplied to motor vehicles from the clutch position detecting system Stop-start system, stopping and starting for controlling the engine of the motor vehicles.
According to the second aspect of the invention, there is provided a kind of clutch pedal position and offer for detecting motor vehicles refers to Show the clutch position detecting system of the controlled output of the location status of the clutch pedal, the system includes that providing instruction works as The electricity of the signal of position detecting device and treatment from the position detecting device of the signal of front clutch pedal position Sub- clutch pedal position processor, if wherein the clutch pedal position is in the fixed lower limit by clutch pedal position In the transition zone defined with the fixed upper limit of clutch pedal position, in the transition zone, the clutch pedal position State is to discharge and force down one of them, and the electric clutch pedal position processor can be run so as to set and clutch The movable threshold of pedal starting position, if the movable threshold is through, when the clutch pedal position is in the conversion The change of clutch pedal position state will be caused when in area, and if the movable threshold is through, then by the control Output is another clutch pedal position state of instruction from current clutch pedal position state change is indicated.
If described at the clutch pedal at the clutch pedal starting position in the release conditions Electric clutch pedal position processor can be run so as to set the movable threshold to have more than the clutch The amplitude of device pedal starting position amplitude, and if at the clutch pedal at the clutch pedal starting position Described to force down state, then the electric clutch pedal position processor can be run so as to set the movable threshold To have the amplitude less than clutch pedal starting position amplitude.
The electric clutch pedal position processor can run so as to set the movable threshold with it is described from The peak excursion of clutch pedal position.
The electric clutch pedal position processor can be can run so as to whenever calculating the movable threshold When, described one amount of very little of movable threshold is adjusted, to allow unintentional clutch pedal position to change.
Adjusting the movable threshold can include, whenever the movable threshold is calculated, be increased by being stepped on from the clutch Amount of the plate starting position to the skew very little of the movable threshold.
If the amplitude of the movable threshold is more than the beginning clutch position, institute is added to by by the amount of the very little The currency of movable threshold is stated, the skew can be increased.
Alternatively, if the amplitude of the movable threshold be less than the beginning clutch position, by from it is described can The currency of dynamic threshold value subtracts the amount of the very little, and the skew can be increased.
The amount of the very little can be less than the 1% of the value of the skew.
The electric clutch pedal position processor can be run so as to by the controlled output from the clutch Device position detecting system is supplied to the stop-start system of motor vehicles, and the engine for controlling the motor vehicles stops Only and start.
According to the third aspect of the invention we, there is provided a kind of motor vehicles, the motor vehicles have engine, engagement state by The clutch of clutch pedal control, the change in location according at least to the clutch pedal are automatically stopped and start the engine System and second aspect according to the present invention are configured to detect the clutch pedal inspection of the clutch pedal position Examining system.
Brief description of the drawings
The present invention is described by way of example below with reference to the accompanying drawings, wherein：
Figure 1A is the schematic diagram of the motor vehicles with stop-start system of the invention；
Figure 1B is the schematic diagram of the clutch actuation system of a part for the stop-start system to form Figure 1A；
Fig. 2 is showing for the opereating specification of the clutch pedal motion for showing three predetermined areas according to prior art It is intended to；
Fig. 3 is the signal of the opereating specification of the clutch pedal motion for showing four predetermined areas of the invention Figure；
Fig. 4 is the first implementation for showing the method from clutch position detecting system of the invention generation controlled output The flow chart of example；
Fig. 5 is the second implementation for showing the method from clutch position detecting system of the invention generation controlled output The flow chart of example；
Fig. 6 is the schematic diagram for showing six clutch position changes and the State Transferring for causing.
Specific embodiment
The motor vehicles 5 with the engine 10 for driving multi-speed transmission 11 are shown with reference to Figure 1A and 1B, Figure 1A and 1B.Should Speed changer 11 is driveably connected to engine 10 by clutch 8 (Figure 1A is not shown), and the clutch 8 is by motor vehicles 5 Driver manually engages or discharges and with gear selector (not shown).The gear selector is between several positions It is movable, several positions include selected at least one position of gear for the part for forming multi-speed transmission and do not have There is the neutral gear position of the gear of selection multi-speed transmission.When gear selector moves to neutral gear position, the quilt of multi-speed transmission 11 It is said to be and is in neutral position state, being driven in neutral position state can not be transmitted by multi-speed transmission, and when gear selector is moved to During transmission gear, multi-speed transmission 11 is said to be and is in gear (in gear) state, and being driven in range state can be by multi-speed Speed changer is transmitted.
The engine primer of the form of integrated actuating device-generator 13 is driveably connected to engine 10 and this In the case of the bent axle of engine 10 is connected to by the flexible actuator of drive belt or the form of chain drive 14.The starter- Generator 13 is connected to the power supply of the form of battery 15 and for starting engine 10, and when it is used as generator operation The power supply is recharged by starter-generator.The invention is not restricted to utilize starter-generator 13 and starter-generator 13 can be used the starter replacement for starting engine 10.
It should be understood that during the starting of engine 10, starter-generator 13 drives the bent axle of engine 10, and In other times, the starter-generator is driven to produce electric energy by engine 10.
The exercisable on/off device of driver of the key operated form of key 17 is used for controlling the total of engine 10 Operation.That is, engine 10 runs when key 17 is in " key-connection " position, and work as key 17 and be in " key During spoon-disconnect " position, engine 10 can not run.Key 17 also includes the 3rd moment position for manual-start engine 10 Put.It is understood that, it is possible to use other devices provide this feature and the invention is not restricted to utilize key.
Electronic control unit 16 is connected to starter-generator 13, engine 10, is in neutral for monitoring the speed changer Or the gear selector sensor 12 of gear, the vehicle speed sensor 21 of rotary speed for measuring wheel 20, for monitoring system The brake pedal position sensor 24 of the position of dynamic pedal 23, the clutch pedal position of the position for monitoring clutch pedal 25 Put detecting system and the TPS 19 for monitoring the position of accelerator pedal 18.The accelerator pedal 18 Driver's input on the desired power output from engine 10 is provided.If accelerator pedal 18 is from rest position Put movement, it is considered that accelerator pedal 18 is in depressed position or is in the state of forcing down.
Although describing the measurement of motor vehicle speed above with reference to wheel detector 21, because this sensor is made For the part of anti-lock braking system is typically already existed on motor vehicles, it should be appreciated therefore that, it is possible to use other are suitable Device determine the speed of motor vehicles 5, for example measure the sensor of the rotary speed of the output shaft from speed changer 11.
It should be understood that term gear selector sensor is not limited to the sensor of the position for monitoring the gear selector, and Can be that any device that speed changer 11 is the feedback in gear or neutral gear can be provided.
Equally, term brake pedal sensor is not limited to monitor the sensor of brake pedal position, and can be to provide machine Whether the operator of motor-car 5 applies pressure to apply motor vehicles 5 any of the feedback of braking to brake pedal 23 Device.For example, brake pedal sensor can monitor the pressure of fluid in one or more brake pipings.When brake pedal 23 Forced down to apply during braking completely, it is considered that brake pedal is in and forces down lower state or be in depressed position.
In this case, clutch pedal position detecting system includes the physical location for being used for monitoring clutch pedal 25 Linear position sensor 26 and for the position signalling from clutch position sensor 26 is processed into by using being stored in The EC3P of the controlled output that the electronic control unit 16 of the logic in electric clutch pedal position processor (EC3P) 16C is used 16C。
Clutch position sensor 26 can include one or more position sensors, such as rotating potentiometer.
As the clutch pedal 25 that forces down or discharge state determination by forming the part of electronic control unit 16 EC3P 16C are carried out using the clutch position signal received from position sensor 26.The clutch position signal represents clutch The current location (CP) of pedal 25.
As shown in Figure 1B, in this case, clutch actuation system is by clutch pedal 25, hydraulic main cylinder 27, hydraulic pressure Secondary cylinder 28 and formed via the engagement of release bearing 9 and the clutch trip lever 29 of releasing clutch 8.However, it should be understood that can With with other devices by the motion of clutch pedal 25 be converted into clutch 8 out of engagement with and the invention is not restricted to profit Use hydraulic clutch actuating system.
It should also be appreciated that electric clutch pedal position processor (EC3P) 16C can be single unit and can be with It is not formed as the part of main stop-start electronic control unit 16.
Electronic control unit 16 receives some signals from engine 10, including from velocity sensor (not shown) Represent the signal of the rotary speed of engine 10, and send a signal to engine, for control engine 10 shutdown and Start.In this case, engine 10 be spark ignition engine 10 and from electronic control unit 16 send signal For controlling the fuel feed system (not shown) of engine 10 and the ignition system (not shown) of engine 10.If engine 10 is Diesel engine, then only the fuel of supply engine will be controlled.Electronic control unit 16 is made up of various elements, Including CPU, storage device, timer and signal processing apparatus, it will be from being connected to the electronic control unit 16 The signal of sensor be converted into the data used by the electronic control unit 16, to control the operation of engine 10, specifically Say being automatically stopped and starting for control engine 10.
During normal engine runs, the electronic control unit 16 is operable to, to control the combustion to engine Material is supplied and adjusts ignition system so that spark is desired to produce at the correct moment from spark plug supply engine 10 Motor torque.
Electronic control unit 16 controls the operation of the engine 10 run with both of which, i.e., first or be automatically stopped-rise Dynamic operational mode and second or continuous operation mode.However, it should be understood that one or more single electronic controllers can be with Normal operation and electronic control unit 16 for controlling engine 10 can only control engine 10 to run mould at two kinds Conversion and engine 10 between formula being automatically stopped and starting.
Electronic control unit 16 is further operable, with before allowing to run in the first pattern by checking one or more Multiple engine operating parameters determine whether to be adapted to run engine 10 in the first pattern.
These engine operating parameters include the ECT any catalytic conversion agent relevant with the engine Whether whether ignition and engine rotate in predetermined speed range.For example, if coolant temperature is less than, such as, 65 DEG C Or catalytic conversion agent is nonflammable or engine speed is more than, such as, then 1100 turns (RPM) per minute prevent from entering first Pattern, and electronic control unit 16 can be run so as to warming-up mode operation engine 10, the engine 10 in warming-up pattern Continuous operation is currently running or static regardless of motor vehicles 5.
In the presence of the stopping of one or more preset engines and starting conditions, as long as upon it is determined that engine operating condition It has been met that, just the stop-start system has been arranged in the first operational mode.
These engine stops and starting conditions are used for according to by the electronic control unit 16 from gear selector sensor Stopping of the signal that 12 and EC3P 16C are received in neutral system.If the controlled output from EC3P 16C represents that clutch is stepped on Plate 25 is not depressed and the signal from gear selector sensor 12 represents that neutral is selected, then engine 10 stops Only, and when the controlled output from EC3P 16C represents that clutch pedal 25 is depressed, then engine 10 is reset, or Person starts or is started when gear selector sensor represents that neutral is no longer chosen immediately.
It should be understood that being whether motor vehicles 5 are moving by another operating mode that many systems are utilized.In this feelings Under condition, if the speed of motor vehicles 5 is higher than predetermined low speed, operation in the first pattern is prohibited.
With reference now to Fig. 3, Fig. 3 shows EC3P 16C how according to the percentage of position being fully depressed by a schematic manner By in the signal transacting from clutch pedal position sensor 26 to Operational Zone.
In " R " area, the controlled output from EC3P 16C would indicate that clutch pedal 25 is released, that is to say, that clutch 8 are engaged.
In " D " area, the controlled output from EC3P 16C would indicate that clutch pedal 25 is depressed (depress), and Clutch 8 is departed from.
In " P " area that the biting point of clutch 8 is located therein, the controlled output from EC3P 16C would indicate that clutch is stepped on Plate 25 is depressed (press).
In transition zone " P or R ", the controlled output from EC3P 16C by according to depend on clutch pedal 25 position and Motion.
Release area " R " by 0% lower limit and in this case be 10% predetermined fixed upper limit limit.
Pressure area " D " by 100% the upper limit and be in this case that the 70% predetermined fixed threshold Th2 of Th2 determines.
Transition zone " P or R " is true by predetermined fixed lower limit L1 and by being in this case 30% predetermined fixed upper limit Lu It is fixed.The predetermined fixed upper limit Lu is chosen to it to be had the expected biting point less than clutch 8 but is greater than due to by driving The person's of sailing control (ride) clutch pedal 25 makes the positional value of positional value caused by the displacement of clutch pedal 25.
Area " P " is forced down to be determined by predetermined fixed lower limit Lu and predetermined fixed threshold Th2.
Another movable tracking threshold value Th1 runs and is limited by lower limit L1 and upper limit Lu in transition zone " P or R ". That is.Lu≥Th1≥L1.
With reference now to the numbering on Fig. 3, it is the total of six kinds of exemplary State Transferring explanation EC3P 16C that " A " arrives " F " Operation.
State Transferring " A " is showing along the direction of release in the conversion in the clutch pedal position forced down (CP). To cause change of the controlled output state from EC3P16C from forcing down to discharging through the upper limit Lu of transition zone along this direction Change.
Clutch pedal position moves to from transition zone to be forced down the State Transferring " C " in area and will always cause and force down output.When It is to discharge or force down that whether generating state change will be dependent on original state when fixed upper limit Lu is through.
Clutch pedal position CP causes from EC3P from release area to transition zone through the State Transferring " E " of lower limit L1 The controlled output of 16C is changed from release area to area is forced down.
State Transferring " F " shows that the conversion for exceeding transition zone passes through fixed lower limit L1 along release direction.If originally State is to force down state, then will always cause the control from EC3P 16C through the fixed lower limit L1 of transition zone along this direction System output is changed from state of forcing down to release conditions, or it is release that the state is kept if original state is release conditions State.
State Transferring " B " shows that after the clutch pedal pressure of such as clutch conversion " A " is reduced, clutch is stepped on Board position is in transition zone towards the motion (pressure increases) of depressing position.That is, clutch is released to clutch stepping on Board position X0, wherein X0 represent the clutch pedal position most discharged in the border of transition zone, and now along opposite Direction is moved, therefore clutch pedal pressure increases.X1 is the final stop place of clutch pedal, and " X " is clutch The displacement of pedal.
Conversion window (Fig. 3 is not shown) forces down side positioned at clutch pedal position X0's, in this case changing window The width of mouth is predetermined a small amount of " w ", the skew of " w " between original position X0 and tracking threshold value Th1 in a small amount.Turn The position for changing window is to be because tracking threshold value Th1 follows or trail the amount of the position of clutch pedal 25 in the side of forcing down of X0 The skew " w ", and it is from forcing down towards release to reach the motion of X0.In the example shown, shown X1 is illustrated from X0 The distance " X " equal to " w " is moved, so it is located at threshold value Th1, and because tracking threshold value Th1 is not through, clutch state Keep release conditions.If tracking threshold value Th1 has been through, that is to say, that " X ">" w ", due to tracking threshold value Th1 by To be changed to through the then state and forced down.
Clutch pedal position along with identical direction discussed above continue move not mobile tracking threshold value Th1, until clutch pedal position has been moved more than the present bit by tracking threshold value Th1 along clutch pressure direction The width " W " of the conversion window put.It should be pointed out that then conversion window will overturn (flip) to track threshold value Th1 upon quilt Through the release side for being located in clutch pedal position.
Due to being present in the release side of clutch pedal position X0 without conversion window, so if clutch pedal position Continue to move from position X0, then there is no state change.Tracking threshold value Th1 will fall behind a distance " w " and follow it, so as to The side of forcing down of clutch pedal position keeps small conversion window.
State Transferring " D " shows that (pressure subtracts towards the motion of off-position for clutch pedal position in transition zone It is few), it follows the motion of such as " d " towards depressed state.
In this case, conversion window will be located at the side of the release of clutch pedal position Z0.Because it from More off-position is moved towards less off-position, and in this case, first tracking threshold value is worn Cross, cause the state to be to force down state.If clutch pedal moved from Z0 to Z1 along clutch release direction " Z " away from From, then will there is no state change because " Z "=" w " in this case, wherein " w " be release end by tracking threshold The width of the conversion window of value Th1 deckles circle.But, if " Z " is increased above " w ", that is to say, that wear clutch pedal position Tracking threshold value Th1 is crossed, then state will change from forcing down to release, and conversion window will be located at the pressure of clutch pedal position Low side.
Clutch pedal position along with equidirectional discussed above continue move not mobile tracking threshold value Th1, Moved along clutch release direction until clutch pedal position and exceed tracking threshold value Th1 more than the width " w " of conversion window Current location.
It is present in the side forced down of clutch pedal position Z0 due to no conversion window, therefore, such as clutch pedal Position is forced down direction and is moved from position Z0 along this, will not have state change.Tracking threshold value Th1 will fall behind a distance " w " follows it, to keep small conversion window in the side of the release of clutch pedal position, until the value for tracking threshold value is equal to Fixed upper limit Lu.It should be understood that fixed upper limit Lu will be without influence, because the state has been to force down shape in this case State.
Thus, movable tracking threshold value Th1 is arranged to follow clutch when driver is forced down with release the clutch pedal 25 The physical location (CP in Fig. 4 and Fig. 5) of device pedal 25, and when small clutch pedal position change along with first clutch When the reverse opposite direction of device pedal occurs, this tracking is used while clutch pedal position is maintained in transition zone Threshold value Th1 is influenceing the change of state.
By the way that the skew for tracking threshold value Th1 to be arranged to such as total clutch pedal position is moved 5% a small amount of, clutch The smaller change of device pedal position can be used for influenceing clutch pedal position state change.
When clutch pedal position moves from trailing threshold value Th1, tracking threshold value Th1 follows clutch pedal position quilt The referred to as fixed range of transition deviation " W ".Moved when clutch pedal position and exceeded first trailing threshold more than skew " W " During value Th1, the trailing threshold value Th1 will start to track clutch pedal position.Movable threshold Th1 is limited in all of time To be maintained between lower limit L1 and upper limit Lu.
For the driver of the motor vehicles of control/clutch pedal 25, clutch pedal 25 is (logical towards the motion forced down Be commonly used to start engine by stop-start system to start) be consistent distance (w%) that pedal is moved away, with due to Clutch caused by the control/pin to clutch pedal 25 of (such as 15 to 25%) is parked in normal expected scope The actual margin of pedal pressure is unrelated.
Therefore, the improvement of the operation of stop-start system can trail threshold value Th1 and clutch pedal position by setting One of w% small value of controlling value skew such as clutch pedal position produce, the change of state is caused if being through.
It is 5% that the value of w% can be selected for example, and this value is for avoiding drawing by signal noise or by by vibration or switching The wrong conversion that the pin movement of the casual driver for rising is excited is sufficiently large, but for providing engine to driver Feeling for the demand of starting is sufficiently small.
It should be pointed out that repeating to change in order to avoid quick, there is provided pass across the border hysteresis to prevent from quickly shaking between states Swing (flip-flopping).That is, there is provided two are trailed threshold value rather than one discussed above.
Further improvement is adaptively to learn X0 and Z0.This is used for the pin of the driver when attempting to keep pedal static (creep) is wriggled along any one direction.Casual clutch pedal position change is generally termed clutch position wriggling. Utilization learns element based on the time, and X0 and Z0 can lentamente adapt to help prevent unnecessary State Transferring.With This mode, start-stop system can be distinguished in the pin of fatigue and clearly between driver intention.Expression hope pull-off, The clearly driver intention for further forcing down or releasing the pedal for changing gear or being fully engaged clutch will be defined as working as Had been detected by very short predetermined amount of time more than w% motion amplitude when.
With reference now to Fig. 6, Fig. 6 illustrates in greater detail six kinds of clutch position changes and how to set trailing threshold value Th1, To limit one end of conversion window so that the opposite end at clutch pedal position is used to set trails threshold value Th1. The movement of the clutch pedal position in conversion window will not produce the change of clutch pedal position state and will not move The movable position for trailing threshold value Th1.
It should be understood that the state of all determinations is supplied to electronic control unit 16 as the output from EC3P 16C, use In the stop-start system of control motor vehicles 5.
Conversion T1 is started with CP=100% and is terminated with CP=24%.When the size of CP is less than corresponding to fixed threshold Th2 70% when, state is from depressed state to forcing down state change.Because the size of clutch pedal position CP continues to reduce, The state remains the state of forcing down until fixed upper limit Lu is through at 30%, this point state change to release conditions simultaneously And will stay in the release conditions until it reaches the end of its change in location that clutch pedal position is 24%.Should refer to Go out, in this case, conversion window is located at the side forced down of clutch pedal position CP=24%, and the trailing threshold Value Th1 offsets 5% distance, therefore Th1=29% towards the direction forced down.
Conversion window is always located in causing from release conditions to forcing down state or from state of forcing down to the shape of release conditions The side of the clutch pedal position that state changes.
Conversion T2 is to move and follow conversion T1 from 24% to 0% clutch pedal position.In this case, will not have Stateful change, because the state has been release conditions and clutch pedal position being moved towards the position for discharging completely. Conversion window by towards release location following clutch pedal position, but because trailing threshold value Th1 is stepped on positioned at clutch The side forced down of Board position, therefore no state change threshold value is through.
Conversion T3 is to move and follow conversion T1 from 24% to 100% clutch pedal position.
Amplitude with clutch pedal position increases, and does not have state change, until clutch pedal position is more than trailing The position of threshold value Th1.That is, state will change to pressure from release conditions when clutch pedal position CP is more than 29% Low state.As the amplitude of clutch pedal position CP continues to increase, the state will keep forcing down state until fixed threshold Th2 It is through 70%.Higher than 70%, the state will change to depressed state and keep this state until clutch pedal position Reach 100%.
Conversion T4 is started with CP=0% and is terminated with CP=24%.Once 10% through fixed lower limit, state just from Release conditions change to state of forcing down and will remain in the state of forcing down until clutch pedal position reaches 24%.Due to clutch Device pedal position is moved from release conditions towards depressed state, and the conversion window is located at the release of clutch pedal position CP Side and trail threshold value Th1 from clutch pedal position towards release conditions skew 5%.Thus while clutch pedal position It is identical to put with conversion T1, but the position of conversion window is on the relative side of clutch pedal position CP.
Conversion T5 is, from 24% to 0%, and to follow T4.
Clutch pedal position state is initially forced down after T4 is changed, with the T1 to 24% for producing release conditions Result is different.
Amplitude with clutch pedal position reduces, and the state keeps identical state to be reached until trailing threshold value Th1 19%.It is changed to release conditions and will stay on the identical state when trailing threshold value Th1 has just been through the state, until Clutch pedal position reaches 0%, the complete depressed position of clutch pedal 25.
When clutch pedal position falls when less than current trailing threshold value Th1, it will cause trailing threshold value Th1 to be turned to The side forced down of the clutch pedal position, and moved more than 5% by formerly setting in clutch pedal position Trailing threshold value Th1 after, the trailing threshold value will fall behind 5% track clutch pedal position CP, until trail threshold value Th1 reach Lower limit L1.
Conversion T6 follows conversion T4.
The initial conversion is state of forcing down and keeps this state to be through 70% until fixed threshold Th2, afterwards, It reaches depressed state and is protected because clutch pedal is further depressed the fully depressed position with 100% amplitude Hold in the depressed state.It should be pointed out that due to trailing the side that threshold value Th1 is located at the release of clutch pedal position, it can not It is through.But when the amplitude of clutch pedal position increases from 24%, trailing threshold value Th1 will follow until that ought reach fixation It reaches 30% maximum predetermined value during upper limit Lu.
The position of conversion window and the position of threshold value Th1 is therefore trailed always in the side of clutch pedal position, such as Fruit trailing threshold value Th1 is through and clutch pedal position will produce the shape from state of forcing down to release conditions in transition zone The change of state, or vice versa it is as the same.
With reference now to Fig. 4, Fig. 4 is shown for being produced from EC3P 16C using dynamic clutch function of the invention Controlled output method first embodiment.
The upper limit Lu that the method is briefly included in its preset range initially sets movable threshold Th1.Then repeatedly The function is performed, and is being performed every time, the new position (Thresh_tmp) of movable threshold is calculated as constant offset, this In the case of the constant offset be the current location (CP) 5% for leaving clutch pedal.If the new position (Thresh_ for calculating Tmp) closer clutch pedal position (CP), then the new position be taken as to be discharged into and force down threshold position (Th1), otherwise The value of first threshold value Th1 is retained.No matter which kind of situation, the value of threshold value Th1 is limited at upper limit Lu and lower limit L1, this In the case of upper and lower bound be respectively 30% and 10%.
In detail, the method starts in step 100, is not run in step 100 motor vehicles 5, then in step 105, Key ON event occurs, and is that motor vehicle systems connect electric power, especially for electronic control unit 16, clutch pedal is sensed Device 26 connects electric power with EC3P 16C.
Then in step 110, by setting Th1 equal to fixed upper limit Lu, i.e. 30%, EC3P 16C are initialised, and this leads to Often before the method can suitably start, realized by ensuring the fully pressure of clutch pedal 25.That is, Actually there is another step 107 (not shown), in this step, whether the method test clutch pedal 25 is complete Ground pressure, without being fully depressed by, the method returns to step 105, and if be fully depressed by, is trailing threshold The method proceeds to step 110 in the case that value is set to Lu.After step 110, the method proceeds to determination step 115.
In determination step 115, current clutch pedal position (CP) is compared with movable threshold Th1.If CP's Amplitude is equal to or more than Th1, and then result is to proceed to step 120, and if the amplitude of CP is less than Th1, result is to proceed to Step 130.
Treatment CP is more than or equal to the situation of movable threshold Th1 first, and the method continues in step 120, to CP and to press The Th2 of the lower threshold in lower area is compared.If CP is more than or equal to Th2, the state being decided to be in step 124 " pressure " and corresponding controlled output is provided to electronic control unit 16, and if CP is less than Th2, the state is in step 122 are confirmed as " forcing down ", and corresponding controlled output is provided to electronic control unit 16..The property of controlled output will It is decided by the specific design of EC3P 16C, but it is defeated to may, for example, be 2 bits with following mark (designation) Go out：[00] the clutch pedal position state of release is represented；[01] the clutch position state forced down is represented；[11] pressure is represented Clutch pedal position state.
Then the method proceeds to step 125 from step 122 and 124, and in step 125, Temp Threshold Thresh_tmp sets It is set to and subtracts the transition deviation (w%) equal to CP.
Then method proceeds to step 126, in the value of step 126 Temp Threshold Thresh_tmp and tracking threshold value Th1 It is compared, and if the value of Thresh_tmp is more than Th1, the method proceeds to step 128, is arranged in 128, Th1 Thresh_tmp, and if Thresh_tmp is not more than Th1, then in step 127, Th1 keeps constant.
Step 130 is returned to, is confirmed as " release conditions " in 130 states and corresponding controlled output is from CE3P 16C is supplied to electronic control unit 16, and the method proceeds to 132 from 130.
In step 132, Temp Threshold Thresh_tmp is set equal to CP plus the transition deviation (w%).
The method proceeds to step 134, enters with the currency of tracking threshold value Th1 in 134 Temp Threshold Thresh_tmp Row compares, and if the value of Thresh_tmp is less than Th1, the method proceeds to step 138, is arranged in 138, Th1 Thresh_tmp, and if Thresh_tmp is not less than Th1, then in step 136, Th1 keeps constant.
From any one continuation of step 127,128,136 and 138, the method proceeds to step 140, in 140 the method Ensure the value of the Th1 produced from process step 127 or 128 or 136 or 138 above respectively in upper limit Lu and lower limit L1. That is, if Th1 is more than Lu, its value is reduced to equal to Lu, and if equally the value of Th1 is less than L1, and its value increases to In L1.
Whether still then the method proceeds to step 150 from step 140, in 150 the method test " key ON " state So exist.Continue to remain up as " key ON state " is still present expression electric power, then method returns to step 115, and And repeat step 115 to 150, otherwise the method terminate in step 160.As long as electric power continues to remain up, the method step 115 To 150 each perform 20 to 50 milliseconds respectively.
The conversion statement that many examples of the method operating procedure shown in Fig. 4 are given below with respect to Fig. 6.
Conversion T1s of the CP from 100% to 24%
Wherein：
CP*=100%CP* is the clutch pedal position value for calculating institute's foundation.In this case, clutch pedal position Value is put with 100 amplitude.
(due to limitation (clipping) step 140, Th1 can not be more than 30%) for Th1=30%.
Th2=70%L1=10% Lu=30%
Skew " w "=5%
Step number Test is acted As a result
115 100≥30 "Yes" proceeds to 120
120 100≥70 "Yes" proceeds to 124
124 State=D Output state is depressed
125 100-5 Thresh_tmp=95
126 95>30 "Yes" proceeds to 128
128 Th1=95 is set Th1=95
140 Restricted T h1 Th1=30
Conversion T1s of the CP from 100% to 50%
Wherein：
CP*=50%
(due to conditioning step 140, Th1 can not be more than 30%) for Th1=30%
Th2=70%Ll=10% Lu=30%
Skew " W "=5%
Conversion T1 of the amplitude of CP from 50% to 24%
Wherein：
CP*=24%
(due to conditioning step 140, Th1 can not be more than 30%) for Th1=30%
Th2=70% Ll=10% Lu=30%
Skew " W "=5%
Step number Test is acted As a result
115 24≥30 "No" proceeds to 130
130 State=R Output state discharges
132 24+5 Thresh_tmp=29
134 29<30 "Yes" proceeds to 138
138 Th1=29 is set Th1=29
Therefore, at the end of conversion T1, clutch state is release conditions, and clutch pedal position is 24%, changing window Mouthful be located at the side forced down of the clutch pedal position, trail threshold value Th1 be located at the clutch pedal position 5% away from From.
Conversion T2s of the CP from 24% to 20%
Wherein：
CP*=20%
Th1=29% Th2=70% Ll=10%
Lu=30% offsets " w "=5%
Step number Test is acted As a result
115 20≥29 "No" proceeds to 130
130 State=R Output state discharges (being release conditions)
132 20+5 Thresh_tmp=25
134 25<29 "Yes" proceeds to 138
138 Th1=25 is set Th1=25
Therefore without state change, but tracking threshold value follow clutch pedal position so as in conversion window in clutch 5% skew is kept in the case of the side forced down of pedal position.
Conversion T2s of the CP from 20% to 0%
Wherein
CP*=0% Th1=25% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 0≥25 "No" proceeds to 130
130 State=R Output state discharges
132 0+5 Thresh_tmp=5
134 5<25 "Yes" proceeds to 138
138 Th1=5 is set Th1=5
140 Restricted T h1 Th1=10
Therefore, no state change and track threshold value Th1 and be prevented from down dropping below 10%, conversion window is protected Hold in the side forced down of clutch pedal position, but due to the restriction effect of conditioning step 140, be located in this case At 10% distance.
Conversion T3s of the CP from 24% to 28%
Wherein：
CP*=28% Th1=29% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 28≥29 "No" proceeds to 130
130 State=R Output state discharges
132 28+5 Thresh_tmp=33
134 33<29 "No" proceeds to 136
136 Th1=Th1 is set Th1=29
Therefore no state change and track threshold value Th1 and do not move, but be positioned in this case 1% away from From place.
Conversion T3s of the CP from 28% to 29.5%
Wherein：
CP*=29.5% Th1=29% Th2=70%
Ll=10% Lu=30% offset " w "=5%
State is varied and tracks threshold value Th1 and has kept identical.Conversion window is from clutch pedal position The side forced down be turned to clutch pedal position release side, therefore tracking threshold value be maintained at clutch pedal position The side, if wherein it is through changes generating state.
It should be understood that in this case, tracking threshold value is located at 0.5% distance.In practice, in tracking threshold value It is located at such as when in 3% tracking threshold value when clutch pedal position after being through, using hysteresis band preventing vibration (flip-flopping)。
CP proceeds to 50% conversion T3 from 29.5%
Wherein：
CP*=50% Th1=29% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 50≥29 "Yes" proceeds to 120
120 50≥70 "No" proceeds to 122
122 State=P The state of showing is forced down
125 50-5 Thresh_tmp=45
126 45>29 "Yes" proceeds to 128
128 Th1=45 is set Th1=45
140 Restricted T h1 Th1=30
There is no state change and track threshold value Th1 to be already confined to 30.Conversion window is maintained at clutch pedal position The release side put, therefore tracking threshold value is maintained at the side of clutch pedal position, wherein if tracking threshold value is through Generating state is changed.
Conversion T3s of the CP from 50% to 100%
Wherein：
CP*=100% Th1=30% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 100≥30 "Yes" proceeds to 120
120 100≥70 "Yes" proceeds to 124
124 State=D Output state is depressed
125 100-5 Thresh_tmp=95
126 95>30 "Yes" proceeds to 128
128 Th1=95 is set Th1=95
140 Restricted T h1 Th1=30
State changes to pressure from forcing down, because fixed upper threshold value Th2 has been through and has tracked threshold value It is restricted to 30.Conversion window is maintained on the side of clutch pedal position, wherein the generating state if conversion window is through Change.
Conversion T4s of the CP from 0% to 14%
Wherein：
CP*=14% Th1=10% (due to limitation)
Th2=70% Ll=10% Lu=30%
Skew " w "=5%
State is changed to from release and forced down, because lower limit L1 has been through and has tracked threshold value Th1 is maintained at 10. Conversion window is maintained on the side of clutch pedal position, wherein will occur as conversion window is through state change, but Inverted compared with its original position, it is now currently located in the side of the release of clutch pedal position.
Conversion T4s of the CP from 14% to 18%
Wherein：
CP*=18% Th1=10% (due to limitation)
Th2=70% Ll=10% Lu=30%
Skew " w "=5%
Step number Test is acted As a result
115 18≥10 "Yes" proceeds to 120
120 18≥70 "No" proceeds to 122
122 State=P Output state is forced down
125 18-5 Thresh_tmp=13
126 13>10 "Yes" proceeds to 128
128 Th1=13 is set Th1=13
Because clutch position moves away tracking threshold value Th1, tracking threshold value is not through, so clutch pedal State keep force down state.Threshold value Th1 is spaced apart 5% with clutch pedal position now, in clutch pedal position The side, if passed through, causes state change.
Conversion T4s of the CP from 18% to 24%
Wherein：
CP*=24% Th1=13% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 24≥13 "Yes" proceeds to 120
120 24≥70 "No" proceeds to 122
122 State=P Output state is forced down
125 24-5 Thresh_tmp=19
126 19>13 "Yes" proceeds to 128
128 Th1=19 is set Th1=19
The state of clutch pedal position keep constant and trail threshold value tracked clutch pedal position with it Keep 5% skew.Conversion window is located at the side of the release of clutch pedal position.
It should be understood that trailing threshold value is located at the release of clutch pedal position in 19% place one in this case Side, and for identical position in the case of conversion 1, the trailing threshold value is located at clutch pedal position in 29% place The side forced down.
Conversion T5s of the CP from 24% to 18%
Wherein
CP*=18% Th1=19% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 18≥19 "No" proceeds to 130
130 State=R Output state discharges
132 18+5 Thresh_tmp=23
134 23<19 "No" proceeds to 136
136 Th1=Th1 is set Th1=19
Because trail threshold value Th1 being through, the state is from forcing down state change to release conditions, but threshold value Without mobile because clutch pedal position is lower than current trailing threshold position to be not more than 5%.It should be pointed out that when trailing threshold value Conversion window is now currently located in the side forced down of inverted clutch pedal position when Th1 is through.It should be understood that in reality Trample middle by offer hysteresis band, therefore will not cause vibration towards the small change for forcing down state return.
Conversion T5s of the CP from 18% to 12%
Wherein：
CP*=12% Th1=19% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 12≥19 "No" proceeds to 130
130 State=R Output state discharges
132 12+5 Thresh_tmp=17
134 17<19 "Yes" proceeds to 138
138 Th1=17 is set Th1=17
There is no generating state change and conversion window is maintained at the side forced down of clutch pedal position, but trail Threshold value have begun to tracking clutch pedal position so as to lag behind it 5%.
Conversion T5s of the CP from 12% to 0%
Wherein：
CP*=0% Th1=17% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 0≥17 "No" proceeds to 130
130 State=R Output state discharges
132 0+5 Thresh_tmp=5
134 5<17 "Yes" proceeds to 138
138 Th1=5 is set Th1=5
140 Restricted T h1 Th1=10
The state of clutch pedal position is not changed in and conversion window is maintained at forcing down for clutch pedal position Side, but trail threshold value and be limited to be maintained at 10%.
Conversion T6s of the CP from 24% to 28%
Wherein：
CP*=28% Th1=19% Th2=70%
Ll=10% Lu=30% offset " w "=5%
There is no state change but trail threshold value and moved to track clutch pedal position.
From 28% to 50% conversion T6
Wherein：
CP*=50% Th1=23% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 50≥23 "Yes" proceeds to 120
120 50≥70 "No" proceeds to 122
122 State=P Output state is forced down
125 50-5 Thresh_tmp=45
126 45>23 "Yes" proceeds to 128
128 Th1=45 is set Th1=45
140 Restricted T h1 Th1=30
There is no state change, conversion window is still located on the release side of clutch pedal position, but due to upset tail It is fixed on upper limit Lu now with threshold value.
Conversion T6s of the CP from 50% to 100%
Wherein：
CP*=100% Th1=30% Th2=70%
Ll=10% Lu=30% offset " w "=5%
Step number Test is acted As a result
115 100≥30 "Yes" proceeds to 120
120 100≥70 "Yes" proceeds to 124
124 State=D Output state is depressed
125 100-5 Thresh_tmp=95
126 95>30 "Yes" proceeds to 128
128 Th1=95 is set Th1=95
140 Restricted T h1 Th1=30
Trail threshold value Th1 and be constrained on upper limit Lu still through limitation, but because clutch pedal position is solid through this Determine upper threshold value Th2 and stateful change.
According to the second embodiment of the present invention, behavior is generally entered for the position of threshold value (Th1) in each execution circulation 0.01% minor adjustment (δ) is removed with by threshold value from current clutch position (CP).It is this to be intended that increase movable threshold Th1 And the interval between current clutch position CP is to deviant, if the pin of such as driver is towards movable threshold Th1 Lentamente move (wriggling).Casual clutch pedal position change is commonly referred to as clutch pedal " wriggling ".With it is normal The change that causes of pedal movement be insignificant compared to the effect of this regulation, but prevent due to it is gradual wriggle rather than The incorrect state change that positive driver intention causes occurs.
Flow chart in Fig. 5 is shown in greater detail in the side using dynamic clutch function in the case that addition " wriggling " is adjusted The second embodiment of method.
Start in step 200 in method, wherein motor vehicles 5 do not run, then sent out in step 205 key ON event It is raw, it is that motor vehicle systems connect power, it is specifically electronic control unit 16, clutch pedal sensor 26 and EC3P 16C。
Then in step 210, EC3P 16C are initialized by setting Th1 equal to fixed upper limit Lu i.e. 30%, and this is logical Cross ensured that clutch pedal 25 has been fully depressed by realizing before it normally can start the method.That is, in practice In also have another step 207 (not shown), in this step, the method test clutch pedal 25 whether by fully Pressure, without being fully depressed by, the method returns to step 205, and if be fully depressed by, is trailing threshold The method proceeds to step 210 in the case that value is set to Lu.After step 210, the method proceeds to determination step 215.
In determination step 215, current clutch pedal position (CP) is compared with movable threshold Th1.If CP etc. In or more than Th1, then result is to proceed to step 220, and if CP is less than Th1, the method proceeds to step 230.
Treatment CP is more than or equal to the situation of movable threshold Th1 first, and the method continues in step 220, compares CP with pressure The Th2 of lower area lower threshold value.If CP is more than or equal to Th2, the state is decided to be " pressure " and corresponding in step 224 Controlled output is provided to electronic control unit 16, and if CP is less than Th2, the state is confirmed as " forcing down " in step 222, And corresponding controlled output is provided to electronic control unit 16.
Then the method proceeds to step 225 from step 222 and 224, and in step 225, Temp Threshold Thresh_tmp sets It is set to and subtracts the transition deviation (W%) equal to CP.
Then method proceeds to step 227, in working as step 227 Temp Threshold Thresh_tmp and tracking threshold value Th1 Preceding value subtracts wriggling regulation δ and is compared, and if the value of Thresh_tmp subtracts δ more than Th1, the method proceeds to step 229, It is arranged to Thresh_tmp in 229, Th1, and if being not more than Th1 in step 227Thresh_tmp subtracts δ, then in step 228, Th1 are arranged to Thh1 subtracts δ.
Step 230 is returned to, is confirmed as " release " in 230 states and corresponding controlled output is carried from CE3P 16C Electronic control unit 16 is supplied, then the method proceeds to 232 from 230.
In step 232, Temp Threshold Thresh_tmp is set equal to CP plus the transition deviation (W%).
The method proceeds to step 235, adds with the currency of tracking threshold value Th1 in 235 Temp Threshold Thresh_tmp Regulation δ of wriggling is compared, and if the value of Thresh_tmp adds wriggling regulation δ less than Th1, the method proceeds to step 239, it is arranged to Thresh_tmp in 239, Th1, and if in step 235, the value of Thresh_tmp adds δ not less than Th1, so Afterwards in step 237, Th1 is arranged to Th1 plus δ.
From any one continuation of step 228,229,237 and 239, the method proceeds to step 240, in 240 the method Ensure the value of the Th1 produced from process step 228 or 229 or 237 or 239 above respectively in upper limit Lu and lower limit L1. That is, if Th1 is more than Lu, its value is reduced to equal to Lu, and if equally the value of Th1 is less than L1, and its value increases to In L1.
Whether still then the method proceeds to step 250 from step 240, in 150 the method test key on-states In the presence of.Continue to remain up as " key ON " state is still present expression electric power, then method returns to step 215, and Repeat step 215 to 250, otherwise the method terminate in step 260.As long as electric power continues to remain up, the method step 215 is arrived 250 each perform 20 to 50 milliseconds respectively.
This area it is understood that, although describe the present invention by reference to one or more embodiments, but this hair It is bright to be not limited to disclosed embodiment, and can construct without departing from the scope of the present invention for disclosed embodiment or optional One or more modifications of embodiment.
For example, the engagement state of clutch directly can not infer from clutch pedal, but from clutch trip lever Or the miscellaneous part of clutch release mechanism is inferred.
Although the simple single value above on the threshold value between on forcing down and discharging area describes this hair It is bright, but it should be apparent to a person skilled in the art that according to above-mentioned deduction, higher than movable threshold single value can advantageously by Replace as delayed two values to working.By this way, be discharged into force down threshold value with force down release threshold value will slightly not Together, and if pedal remains close to movable threshold, this will prevent the clutch pedal position for indicating between discharging and forcing down Quick change, or vice versa it is as the same.
Also, although used with reference to particularly advantageous in terms of the stop-start system of motor vehicles The present invention is described, it is to be understood that the system that other motor vehicles are based on can require that clutch pedal position indicates And the present invention can be applied to require that any this motor vehicles of clutch pedal position state are used.

Claims (22)

1. a kind of method that controlled output is produced from clutch position detecting system, wherein the method includes：Monitoring motor vehicles Clutch pedal position, the transition zone that is limited by the scope of clutch pedal position of restriction, the control described in the transition zone System output is that two kinds of alternating clutch pedal position that state is constituted are forced down by clutch pedal release conditions and clutch pedal One kind in state, sets the movable threshold with the skew of clutch pedal starting position, if the movable threshold is through, when When the clutch pedal position is in the transition zone, the change of clutch pedal position state, and if institute will be caused State movable threshold to be through, then change to another alternating state the controlled output from current state.
2. method according to claim 1, wherein methods described also include setting the movable threshold and the clutch The peak excursion of pedal position.
3. method according to claim 1 and 2, if wherein at the clutch pedal starting position clutch The state of pedal is the release conditions, then the amplitude of the movable threshold will be greater than the width of the clutch pedal starting position Degree.
4. method according to claim 1, if wherein the clutch is stepped at the clutch pedal starting position The state of plate be it is described force down state, then the amplitude of the movable threshold will be less than the clutch pedal starting position width Degree.
5. method according to claim 1, wherein when the clutch pedal position and the movable threshold both of which exist When in the transition zone, if the method is also moved including the clutch pedal position from the clutch pedal starting position The movable threshold is left, then moves the movable threshold to keep the predetermined migration with the clutch pedal position.
6. method according to claim 1, if wherein the clutch pedal position is from clutch pedal starting position Towards the movable threshold movement, then the movable threshold amplitude keep it is identical, until the clutch pedal position Move out the preset distance of the movable threshold.
7. method according to claim 1, wherein the lower end of the transition zone is defined by clutch pedal position lower limit, and Defined by the clutch pedal position upper limit upper end.
8. method according to claim 7, wherein release area is defined and another by one end by clutch fully released position The clutch pedal position scope that end is defined by the clutch pedal position lower limit is limited, and whenever the clutch pedal When position is in the release area, the controlled output always indicates the clutch pedal position state of release, and forces down area Defined by the clutch pedal position upper limit by one end and opposite end is by fixing the clutch pedal position model that upper threshold value is limited Restriction is enclosed, and when the clutch pedal position is in described forcing down in area, the controlled output always indicates what is forced down Clutch pedal position state.
9. method according to claim 8, wherein pressure area by one end by fix upper threshold value to define and opposite end by clutch The clutch pedal position scope that device pedal fully depressed position is defined is limited, and whenever the clutch pedal position is in institute State when in pressure area, the controlled output always indicates the clutch pedal position state of pressure.
10. method according to claim 8 or claim 9, wherein the movable threshold and the clutch pedal starting position What offset qualification was defined by the position of the movable threshold and defined by clutch position described in opposite end at one end Conversion window, and the conversion window is always located in the beginning clutch position towards another clutch position state Clutch position area side.
11. methods according to claim 1, wherein the method also include whenever the movable threshold is calculated, just adjusting One amount of very little of the movable threshold is allowing unintentional clutch pedal position to change.
12. methods according to claim 11, wherein adjust the movable threshold include, whenever the calculating movable threshold When, it is increased by the amount of the skew very little from the clutch pedal starting position to the movable threshold.
13. methods according to claim 12, if wherein the amplitude of the movable threshold is more than the beginning clutch Position, by the way that the amount of the very little to be added to the currency of the movable threshold, the skew is increased.
14. methods according to claim 12, if wherein the amplitude of the movable threshold is less than the beginning clutch Position, then by subtracting the amount of the very little from the currency of the movable threshold, the skew is increased.
15. methods according to claim 11, wherein the amount of the very little is less than the 1% of the value of the skew.
16. methods according to claim 1, wherein the method are also included the controlled output from the clutch position Detecting system is supplied to the stop-start system of motor vehicles, for controlling the stopping of the engine of the motor vehicles and rising It is dynamic.
A kind of 17. clutch pedal position for detecting motor vehicles simultaneously provide the location status for indicating the clutch pedal Controlled output clutch position detecting system, the system includes providing the position of the signal for indicating current clutch pedal position The electric clutch pedal position processor of the signal of detection means and treatment from the position detecting device is put, wherein If the clutch pedal position is in the fixed lower limit and the fixed upper limit of clutch pedal position by clutch pedal position In the transition zone for defining, in the transition zone, the state of the clutch pedal position is to discharge and force down one of them, institute Stating electric clutch pedal position processor can run so as to set the movable threshold offset with clutch pedal starting position, If the movable threshold is through, clutch pedal position will be caused when the clutch pedal position is in the transition zone The change of configuration state, and if the movable threshold is through, then by the controlled output from the current clutch pedal of instruction Location status are changed to indicate that another clutch pedal position state.
18. systems according to claim 17, if wherein at the clutch pedal starting position clutch Pedal is in the release conditions, then the electric clutch pedal position processor can run described movable so as to set Threshold value if starts to have the amplitude more than clutch pedal starting position amplitude in the clutch pedal At position the clutch pedal be in it is described force down state, then the electric clutch pedal position processor can run So as to set the movable threshold to have the amplitude less than clutch pedal starting position amplitude.
19. system according to claim 17 or 18, wherein the electric clutch pedal position processor can run So as to set the peak excursion of the movable threshold and the clutch pedal position.
20. systems according to claim 17, wherein the electric clutch pedal position processor can also run from And, whenever the movable threshold is calculated, described one amount of very little of movable threshold is adjusted, to allow unintentional clutch to step on Board position changes.
21. systems according to claim 17, wherein the electric clutch pedal position processor can run so as to The controlled output is supplied to the stop-start system of motor vehicles from the clutch position detecting system, for controlling The stopping and starting of the engine of the motor vehicles.
A kind of 22. motor vehicles, the motor vehicles have the clutch that engine, engagement state control by clutch pedal, The system of the engine is automatically stopped and started according at least to the change in location of the clutch pedal and according to claim The clutch position detecting system for detecting the clutch pedal position described in 17 to 21 any one.
CN201310117172.2A 2012-04-05 2013-04-07 Method for producing controlled output from the clutch position detecting system of motor vehicles Active CN103362664B (en)

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RU2013115132A (en) 2014-10-10
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RU2627952C2 (en) 2017-08-14
GB201206179D0 (en) 2012-05-23

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