CN106004877A - Method and system for operating car in sailing mode - Google Patents

Method and system for operating car in sailing mode Download PDF

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Publication number
CN106004877A
CN106004877A CN201610380224.9A CN201610380224A CN106004877A CN 106004877 A CN106004877 A CN 106004877A CN 201610380224 A CN201610380224 A CN 201610380224A CN 106004877 A CN106004877 A CN 106004877A
Authority
CN
China
Prior art keywords
variator
clutch
combustion engine
internal combustion
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610380224.9A
Other languages
Chinese (zh)
Inventor
G·布鲁内蒂
C·鲁布萨姆
P·拉明杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Publication of CN106004877A publication Critical patent/CN106004877A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36Inputs being a function of speed
    • F16H59/38Inputs being a function of speed of gearing elements
    • F16H59/42Input shaft speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/14Adaptive cruise control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08Interaction between the driver and the control system
    • B60W50/14Means for informing the driver, warning the driver or prompting a driver intervention
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18072Coasting
    • B60W2030/1809Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2510/00Input parameters relating to a particular sub-units
    • B60W2510/10Change speed gearings
    • B60W2510/1015Input shaft speed, e.g. turbine speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2520/00Input parameters relating to overall vehicle dynamics
    • B60W2520/10Longitudinal speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18072Coasting
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Control Of Transmission Device (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a method and system for operating a car in a sailing mode. A car with a transmission (31-38), a driven wheel (40) coupled to transmission (31-38), a combustion engine (10) and a clutch (20) for coupling transmission (31-38) and engine (10) has a sailing mode where, if an input speed (n31) of transmission (31-38) is less than a predetermined threshold (nmin,1, nmin,2)(S20, S40) then clutch (20) is automatically engaged (S30) and/or engine (10) is run (S30) and/or a signal (S50) is given to select a predetermined gear.

Description

The method and system of vehicle is operated under cruise mode
Technical field
The present invention relates to a kind of method for operating vehicle under cruise mode, a kind of for operating under cruise mode The system of vehicle, particularly performs the system of described method, and includes the vehicle of described system, particularly passenger vehicle.
Background technology
From the point of view of practice, in order to reduce fuel consumption, the clutch being automatically separated electric power operation when cruise is known, Described clutch couples internal combustion engine and the manual transmission of vehicle.Similarly, in practice it is known that can oneself when cruise Dynamic cut out internal combustion engine, particularly when clutch separation or when not having gear to be engaged in variator, (such as variator is in sky Shelves).
In this cruise mode, the rotating speed of the power shaft of variator can exceedingly slow down, and particularly drops to substantially It is zero, although vehicle is still travelling, if such as variator is in neutral state and/or power shaft by still with certain speed Engine brake in operating.
If driver enters low gear in this condition, the synchronizer of variator can be under pressure, and it is necessary Compensated at the slow-speed of revolution of power shaft of reduction of speed and the gear of the driven pulley of vehicle that is connected in traveling by big gear ratio Speed difference between high rotating speed, or in another kind of variator, described synchronizer must be compensated for being connected to the defeated of reduction of speed Speed difference between the high speed of the output shaft of the slow-speed of revolution entering the gear of axle and the driven pulley being connected to driving vehicle.
Under cruise mode, driver can continue through the gear cruise engaged, clutch separation and internal combustion engine Close.In this case, the rotating speed of power shaft can also excessively slow down, and particularly drops to the rotating speed of below idling for internal combustion engine, The most about 700rpm.Driver subsequently can gently oil supply to exit cruise mode, and by internal combustion engine obtain vehicle promotion Power.When the rotating speed of power shaft is less than the idling of internal combustion engine, the speed sync of the both sides of clutch is made to may require that the biggest effect Power, consume friction material and/or make comfort of driving and reduce.
Summary of the invention
Therefore it is an object of the invention to improve the operation to vehicle.
Described purpose solves for operating the method for vehicle especially by providing a kind of, described vehicle have variator, At least one is connected to the driven pulley of variator, internal combustion engine and for coupling the clutch of variator and internal combustion engine, described side In method, under cruise mode, if it is determined that the input speed of variator is less than predetermined threshold, then clutch engages automatically, and/or Internal combustion engine operation, and/or send the information engaging predetermined gear.For said purpose, the present invention also proposes a kind of for operating The system of vehicle, described vehicle have variator, at least one be connected to the driven pulley of described variator, internal combustion engine, for joining Connecing the clutch of variator and internal combustion engine, described system includes the input speed (n for determining variator31) less than predetermined threshold (nMin, 1, nMin, 2) equipment;It is for if it is determined that the input speed (n of variator31) less than predetermined threshold (nMin, 2), then certainly The dynamic equipment engaging clutch;And/or for if it is determined that the input speed (n of variator31) less than predetermined threshold (nMin, 2), The most automatically operate the equipment of internal combustion engine;And/or for if it is determined that the input speed (n of variator31) less than predetermined threshold (nMin, 1), then automatically send the equipment of the information engaging predetermined gear.For said purpose, the present invention also proposes a kind of vehicle, Particularly passenger vehicle, it include variator, at least one be connected to the driven pulley of described variator, internal combustion engine, for coupling Variator and the clutch of internal combustion engine, and described equipment.The invention allows for advantageous embodiment.
According to an aspect of the present invention, a kind of vehicle, including variator, one or more driven pulleys, it is specially permanent Be connected to described variator, be specially connected to the one or more output shaft of described variator, internal combustion engine, and clutch, This clutch is used for making variator (specially its power shaft) and internal combustion engine be coupled to each other.
According to an embodiment, variator is included for being coupled the power shaft of internal combustion engine by clutch and being connected to At least one output shaft of one or more driven pulleys, specifically, at least one output shaft described aligns with power shaft or parallel. The input speed of variator can especially one speed, the specifically power shaft of variator rotate or rotate speed.
According to an embodiment, variator be have at least two, preferably have at least four and particularly have to The manual transmission of the forward with different gear ratio of few five, wherein, the gear constituting bigger gear ratio is usual Being referred to as relatively low-grade location, described gear ratio is the speed speed divided by the output shaft of variator of the power shaft of variator.Such as, One gear constitutes bigger gear ratio than the second gear.
According to an embodiment, described gear can manually be braked speed change loader (specifically gear lever) and distinguish Engage, or engaged.According to embodiment, variator mechanically or electronically is operated.
According to an embodiment, variator includes two or more, and especially at least four or five are arranged in power shaft On different gears, it can be, optionally, coupled to power shaft by synchronizer.Described gear is permissible, specifically for forever Ground, embeds (cog) or interacts respectively with the corresponding different gears being pivotally affixed to countershaft, and described countershaft can be special The output shaft of variator it is connected to by other gear trains.Alternatively, the gear of power shaft can be permanently embedded especially or Interact respectively with the corresponding different gear being pivotally affixed to output shaft itself.Therefore, by alternately through same Step equipment makes the different gears on power shaft be connected to described axle, it is alternatively possible to engage different gears, thus constitutes difference Gear ratio.
According to another embodiment, variator includes two or more, and especially at least four or five are arranged in one Or the different gears on multiple output shaft, it can be, optionally, coupled to corresponding output shaft by synchronizer.Described gear Of course, the most for good and all, embed or distinguish phase with the corresponding different gear of the power shaft being pivotally affixed to variator Interaction.Therefore, by making the different gear being connected on power shaft be connected on described axle by synchronizer alternatively, It is alternatively possible to engage different gears, thus constitute different gear ratio.
Gear at variator is not engaged, and/or the power shaft of variator and output shaft separated from one another in the case of, Especially, variator is referred to as being in neutral.
According to an embodiment, clutch is operated electrically, i.e. described clutch is electric clutch, especially electricity Magnet clutch (especially " e-clutch " or " EM ").
According to an aspect of the present invention, if it is determined that the input speed of variator is respectively smaller than or is less than predetermined threshold, exist Under cruise mode, engage the information of predetermined gear automatically, the most visually, audibly and/or sense of touch ground send to drive Member.
Described predetermined gear can determine based on the current gear engaged.Specifically, lower one than the current gear engaged Or the gear of multiple rank or quantity can be determined that described predetermined gear.Such as, if currently engaging sixth speed position, pass through Respectively from sixth speed potential drop one or two rank low, the 5th or fourth speed position can be determined that predetermined gear.Therefore, according to One embodiment, predetermined gear is the gear more relatively low than the current gear engaged, and particularly closes on relatively low gear.
Predetermined gear is also based on the present speed of vehicle or the current rotating speed of the output shaft of variator and determines, especially When being not have gear to be engaged, i.e. variator is in neutral gear.Such as, if the speed of vehicle is between 40km/h and 45km/h, Then fifth speed position is confirmed as predetermined gear, and if the speed of vehicle between 35km/h and 40km/h time, then fourth speed position It is confirmed as predetermined gear.In one embodiment, if the speed of vehicle is relatively low speed, the most predetermined gear is low or first gear Position.
By the low gear specified by engagement signal, in one embodiment, power shaft will be traveling one of vehicle Or multiple driven pulley accelerates, thus reduce the possible pressure of synchronizer, this pressure due to power shaft and gear thereon it Between or speed difference the most excessive between output shaft and gear thereon.Therefore, according to an embodiment, cruise mode Time and cycle can be correspondingly advantageously extended.
According to a further aspect in the invention, in cruise mode, if it is determined that the input speed of variator is less than or is less than Identical or another predetermined threshold, then clutch automatically engages, and the clutch particularly separated is re-engaged, or the clutch engaged Device remains engaged with, and/or internal combustion engine operation, and the internal combustion engine particularly shut down is activated, or the internal combustion engine of operating keeps fortune Turn.
Operating internal combustion engine, particularly starts the internal combustion engine that shuts down, can add the defeated of speed transmission in one embodiment Entering axle, this is to be realized by drag torque (drag torque), if clutch separation, or more directly by connecing Close or be re-engaged clutch to realize.This acceleration can advantageously reduce the possible pressure of synchronizer in one embodiment Power, this pressure is due to the biggest between power shaft and gear thereon or between output shaft and gear thereon Speed difference.
And, by engaging clutch, especially it is re-engaged the clutch of separation, can be the most favourable Ground reduces the possible pressure of synchronizer.
Especially, as described above, the internal combustion engine making power shaft be connected to operate by engaging clutch can be one Power shaft is directly accelerated by individual embodiment.
Additionally or alternatively, at internal combustion engine operation or in the case of shutting down, engaging clutch can be an enforcement In example, advantageously speed at power shaft becomes at a fairly low to such an extent as to engages the gear of low speed and may (exceedingly) compressing synchronization set For terminating cruise mode before.
Especially, if engaged gear under cruise mode, engage or be re-engaged clutch and will make to be connected to internal combustion engine Vehicle deceleration or again slow down, thus directly transmit signal to driver so that it is according to similar with traditional manual transmission Mode downshift.Therefore, according to an embodiment, driver advantageously need not be suitable for patrolling by his or her driving style Model plane formula.
Additionally or alternatively, if it is determined that the input speed of variator is less than predetermined threshold, engages or is re-engaged clutch Device can advantageously be avoided making internal combustion engine stall or flame-out in one embodiment.
In particular, it was found that in cruise mode, driver is more likely shifted to from neutral gear rather than from high gear Inadequate low gear (and therefore possible (exceedingly) compressing synchronizer).In one embodiment, owing to being shifted to sky Shelves by make no longer by vehicle one or more driven pulleys drive power shaft rotating speed reduce, thus be shifted to neutral gear and because of This increases and is shifted to the probability of inadequate low gear subsequently, whereby may can be a reality to the compressing of synchronizer Execute the input speed being determined by variator in example to detect less than predetermined threshold.Engage the most in this case or again connect Close clutch and thus terminate cruise mode, can the most advantageously reduce be shifted to subsequently inadequate low The probability of speed gear, and reduce the compressing to synchronizer of the possibility (exceedingly) therefore.
According to an embodiment, when variator is in neutral, if or when clutch joint and internal combustion engine are in operating Time, cruise mode can be kept: if determine the input speed of variator (when especially internal combustion engine cuts out) when neutral gear cruises Less than predetermined threshold, according to an embodiment, then internal combustion engine is started by trigger, and clutch is engaged, and is particularly rising After dynamic internal combustion engine.Therefore, the power shaft of variator is driven under the idling (idle sailing) of the internal combustion engine operated Dynamic.This state can remain " idling cruise ", because the danger exceedingly oppressing synchronizer is restricted.
Above-mentioned two aspects can be implemented separately or together.Therefore, in an embodiment, if it is determined that the input speed of variator Less than the first predetermined threshold, the most automatically send the information engaging predetermined gear, and, if it is determined that the input speed of variator Less than the second predetermined threshold, it is less than or less than the first predetermined threshold, then clutch engages and/or internal combustion engine operation.
So, according to an embodiment, driver advantageously been proposed in cruise mode by engaging clutch and/or fortune Before forwarding motivation to terminate, downshift is to extend cruise mode time or cycle.
According to an embodiment, predetermined threshold, the specifically first and/or second predetermined threshold, can idle from internal combustion engine Speed deviation is less than 10%, especially no more than 5%.This can optimize cruise mode time or cycle and/or favourable especially Cruise in idling.According to another embodiment, predetermined threshold, the specifically first and/or second predetermined threshold, can be from internal combustion engine Idling deviation at least 15%, particular at least 20%.This can reduce the probability of (excessively) compressing synchronizer especially. Preferably, predetermined threshold is more than or less than or is equal to the idling of internal combustion engine.Additionally or alternatively, the first and second predetermined thresholds can Offset with one another less than 10%, in particular according to an embodiment less than 5%.This time that can optimize cruise mode or week Phase.According to another embodiment, the first and second predetermined thresholds can offset with one another at least 15%, particular at least 20%.This The time to informational response can be extended.
According to an embodiment, internal combustion engine operation, the internal combustion engine particularly shut down is by engaging clutch start.Special Not, if engaged gear, engaging clutch can start internal combustion engine advantageous by the kinetic energy of driving vehicle.Additionally or can Selection of land, internal combustion engine can operate, and the internal combustion engine particularly shut down can be started by trigger, particularly due to input When rotating speed is in before engaging clutch less than predetermined threshold in neutral cruise.
According to an embodiment, operate internal combustion engine, particularly starts the internal combustion engine that shuts down, alternatively or selectivity ground In the gear of the speed of vehicle and/or the joint of variator respectively by engaging clutch or being performed by starter.Special Not, if the speed of vehicle exceedes predetermined threshold, it can reduce numerical value or increase the gear ratio of gear engaged, and such as the The gear ratio of five gears is more than the gear ratio of sixth speed position, and according to embodiment, internal combustion engine operation, especially by engaging clutch Start, because enough moments of torsion are input to power shaft and the internal combustion engine of variator by this.Therefore, if the speed of vehicle determines low In predetermined threshold, internal combustion engine operation, start by trigger in particular according to embodiment because determine joint clutch will no longer by Enough moments of torsion are input to power shaft and the internal combustion engine of variator.According to an embodiment, if variator is in neutral, start The internal combustion engine shut down is performed by trigger.
According to an embodiment, if clutch engages and/or internal combustion engine operation, cruise mode terminates, especially because Determine that the input speed of variator is less than predetermined (second) threshold value.When cruise mode terminates, the auto-speed of vehicle controls phase It is activated or starts with answering, being particularly useful for the speed the maintaining vehicle speed when cruise mode terminates.Implement according to another Example, if variator is in neutral to maintain idling cruise, if clutch engages and internal combustion engine operation, especially because really The input speed determining variator is less than predetermined (second) threshold value, then cruise mode is maintained.If it is determined that driver starts gear shift Gear outside neutral gear, clutch can be automatically separated to allow this gear shift.
According to an embodiment, if cruise mode is unlocked, when the vehicle is running, clutch is separated and/or internal combustion Machine is closed or turns off, and is based particularly on speed input, particularly bend the throttle.
As from aforementioned clearly visible, the feature of cruise mode can be, vehicle travels, and advances especially and/or place In at least minimum speed, and clutch the most automatically, be based preferably on speed input and separate.Additionally or alternatively, patrol The feature of model plane formula can be, vehicle travels, and particularly advances and/or is at least minimum speed, and internal combustion engine is special It not automatically, be based preferably on speed input and close or shut down.Cruise mode is further characterized in that variator Being in neutral, particularly clutch engages or separates.In another embodiment, the feature of cruise mode can be to be different from Neutral, forward is engaged.According to an embodiment, when the output shaft of electromotor maintains static or idling, particularly when When clutch engages, closedown or the internal combustion engine that shuts down be provided without fuel and/or igniting.
According to an aspect of the present invention, for operating the system of vehicle, described vehicle has variator, at least one connection To the driven pulley of described variator, internal combustion engine and for coupling the clutch of variator and internal combustion engine, described system include for Determine that transmission input is less than the equipment of predetermined threshold, and at least one of which equipment is for if it is determined that variator is fast Degree, less than predetermined threshold, engages clutch the most automatically, for if it is determined that speed, transmission is less than predetermined threshold, particularly certainly Before dynamic joint clutch, the equipment of the internal combustion engine that the most automatically operates, and for if it is determined that speed, transmission is less than predetermined threshold Value, then aut sign is to engage the equipment of predetermined gear.
According to an embodiment, include for engaging clutch and/or opening according to the described equipment of one aspect of the invention The equipment of dynamic device.
Additionally or alternatively, described equipment according to an aspect of the present invention includes for if it is determined that the input of variator Rotating speed is less than the first predetermined threshold, then aut sign is to engage the equipment of predetermined gear, and for if it is determined that speed change Device speed is less than the second predetermined threshold, and this second predetermined threshold is less than the first predetermined threshold, the most automatically engages clutch and/or fortune Turn the equipment of internal combustion engine.
Additionally or alternatively, if described equipment according to an aspect of the present invention includes engaging and/or interior for clutch Combustion engine operates, then terminate the equipment of cruise mode.Additionally or alternatively, if described equipment can include connecing for clutch Conjunction, internal combustion engine operation and variator are in neutral (" idling cruise "), then maintain the equipment of cruise mode.Described equipment is all right Including for determine driver start to engage neutral outside the equipment of gear, and for if it is determined that driver starts to engage Gear outside neutral, divides the equipment of clutch the most automatically.
According to an embodiment, these equipment can include for when neutral is cruised, if it is determined that the input of variator Rotating speed is less than predetermined threshold, then first pass through starter and start internal combustion engine, the most automatically engage clutch and maintain cruise mode Equipment.
Additionally or alternatively, if described equipment according to an aspect of the present invention includes terminating for cruise mode, then rise The equipment that dynamic auto-speed controls.
Additionally or alternatively, if described equipment according to an aspect of the present invention includes being risen for cruise mode Dynamic, be based particularly on speed input, when vehicle the most in motion, then separate clutch and/or close the equipment of internal combustion engine.
Equipment according to an aspect of the present invention can be realized by lower panel element: software, particularly computer program or Computer program module;And/or hardware, especially for the computer or the CPU that perform methods described herein;One Or multiple sensor and/or the executor that communicates, particularly by described computer or central processing unit controls;Or meter Calculation machine program product, particularly data medium and data storage device, including when running on computer or CPU Time can realize the program code of method described herein.Computer program or computer program module can be respectively stored in number According in carrier and data storage device, the most in nonvolatile manner.
Described equipment can realize especially in equipment, the most in the controller and/or in driver assistance.
This system may also be understood to be the functional module including being effected or carried out by computer program or computer program module The equipment of structure.
According to an aspect of the present invention, vehicle, especially passenger vehicle, including variator, at least one be connected to institute State the driven pulley of variator, internal combustion engine, for coupling the clutch of variator and internal combustion engine, and there is equipment described herein System.According to an aspect of the present invention, equipment as herein described is configured to perform method described herein.
Accompanying drawing explanation
The further feature of the present invention is disclosed in dependent claims and following description of preferred embodiments. In the accompanying drawings, partly, schematically show:
Fig. 1 illustrates vehicle according to embodiments of the present invention;
Fig. 2 illustrates the input speed of the variator of the vehicle relative to changes in vehicle speed;
Fig. 3 illustrates method according to embodiments of the present invention, and the method is real by computer program or computer program module Existing.
Detailed description of the invention
Fig. 1 shows vehicle according to an embodiment of the invention, and it includes manual transmission 31-38, is connected to described change Speed two driven pulleys 40 of device 31-38, internal combustion engine 10, for making the electric power behaviour that variator 31-38 and internal combustion engine 10 be coupled to each other The clutch 20 made, and for performing with reference to Fig. 2, the equipment of method according to an embodiment of the invention described by 3, its tool There are computer or the form of ECU 50, described equipment and internal combustion engine 10, the clutch 20 of electric power operation and determine variator The input speed n of 31-3831Sensor communication.
Described variator includes the power shaft 31 for being coupled internal combustion engine 10 by clutch 20, and described power shaft is with input Rotating speed n31Rotating, described variator also includes the output shaft 38 being directed at power shaft 31 being connected to driven pulley 40.Variator bag Include the forward with different gear ratio, illustrate the 5th and sixth speed position or high tap position the most for illustrative purposes.
Fifth speed position is made up of gear 32, and gear 32 can be connected to power shaft 31 by synchronizer 34, and engages Being fixed to the gear 35 of countershaft 37, described countershaft 37 is connected to the output shaft 38 of variator by another group gear.Equally, the 6th Gear is made up of gear 33, and gear 33 can be connected to power shaft 31 by synchronizer 34, can be connected to the 5th alternatively The gear 32 of gear, and engage the gear 36 being fixed to countershaft 37.
Schematic variator 31-38 is only used as an embodiment and is understood.In another unshowned embodiment, axle 37 May be constructed gear 35,36 and be fixed to power shaft thereon.Described power shaft 37 subsequently can be alternately through clutch 20 Receive internal combustion engine 10.In this embodiment, axle 31 constitutes one of an output shaft or two possible output shafts, institute therewith State the differential gear that output shaft can be directly coupled to be represented by circle in Fig. 1.Axle 38 does not exists, or and axle 31 are integrally formed.
With reference to Fig. 2,3, describe in further detail the method performed by ECU 50 according to embodiments of the present invention.
At time point t0(see Fig. 2), when ECU 50 starts cruise mode based on bend the throttle (not shown), car Travel on sixth speed position (representing in Fig. 2) with " VI ".Because this cruise or the cruise mode of indication are known in the present invention , so no longer it being described in more detail.In cruise mode, clutch 20 separates and internal combustion engine 10 cuts out.
Sixth speed position remains engaged with, and i.e. remains coupled to power shaft tooth at cruise mode lower gear 33 by synchronizer 34 Wheel 31.When car speed v reduces due to the factor such as aerodynamic drag, friction, the input speed n of power shaft 3131Also reduce, such as figure Shown in thick line in 2 and right side arrow.
If the gear that driver downshifts the lowest (such as first or second gear), then with input speed n31Fall Low, dangerous increase.The gear of these low gear can be connected to power shaft 31 alternately through synchronizer 34, for example, Citing has been described above with reference to the gear 32,33 of the 5th and sixth speed, and the gear of these low or first gears is due to by big speed change Ratio couples with driven pulley 40, so still can be with high-speed rotation.Therefore, synchronizer 34 must be compensated at the fastest gear rotated The input speed n of the reduction with power shaft 3131Between bigger speed difference.In an alternative embodiment, axle 31 constitutes output shaft, axle 37 constitute power shaft (in Fig. 1, axle 38 is omitted or is integrally forming with axle 31, and variator rotates 180 °), and synchronizer 34 must Must compensate output shaft 31 and with input speed n31Bigger speed difference between the gear of this low gear coupled.
In order to avoid the pressure by possible (excessively) of synchronizer 34, according to embodiments of the invention, ECU 50 holds Row following methods.
In step slo, determine whether vehicle is in cruise mode.If not in cruise mode (S10: " N "), should Method returns step S10 until being in cruise mode.Be in cruise mode or be not at cruise mode can be by an embodiment Middle labellings etc. represent.
If being in cruise mode (S10: " Y "), then the method performs step S20.In step S20, determine that input turns Speed n31Whether less than predetermined Second Threshold nMin, 2
If it is determined that input speed n31Not less than predetermined Second Threshold nMin, 2(S20: " N "), then the method performs step S40。
Determine input speed n in step s 4031Whether less than predetermined first threshold nMin, 1, this predetermined first threshold is more than Or higher than predetermined Second Threshold nMin, 2, described Second Threshold and first threshold are represented by dotted line and chain line the most respectively.
If it is determined that input speed n31Nor less than predetermined first threshold nMin, 1(S40: " N "), the method returns step S10。
If determining input speed n in step S4031Less than predetermined first threshold nMin, 1(S40: " Y "), then the method is held Row step S50.
In step s 50, the information of predetermined gear of engaging is sent.As in Fig. 2 it can be seen that, at time point t1, input Rotating speed n31Drop to predetermined first threshold nMin, 1Below.Therefore at this time point, the information (S50: " V of fifth speed position is engaged!”) It is sent to driver.The method returns step S10 subsequently.
In the exemplary embodiment of Fig. 2, above-mentioned information is made a response and downshifts at time point t2 by driver Five gears (are indicated by " V "), thick line in Fig. 2 and right side arrow upwards represent.
Power shaft 31 and input speed n thereof are accelerated in this operation31, as in figure 2 it is shown, because now power shaft 31 is by the 5th The bigger gear ratio of gear is connected to driven pulley 40.Therefore cruise mode is at t2Can well be kept later.
Reduce further due to the factor such as aerodynamic drag, friction along with car speed v, the input speed n of power shaft 3131Again Secondary reduction, if Fig. 2 is from time point t2Shown in the thick line extended and left arrow.
Therefore, in step s 50, rotating speed n is simply entered31Again drop to predetermined first threshold nMin, 1Hereinafter, just transmission connects Close the information of predetermined gear.Predetermined gear indicated by signal can be close on less than the fifth speed position that engaged at present or Fourth speed position based on vehicle present speed (not shown).
In the illustrative examples of Fig. 2, driver does not reacts to that, and the fourth speed position that do not downshifts.Therefore, with Car speed v and reduce further due to the factor such as aerodynamic drag, friction, the input speed n of power shaft 3131Final at time point t3It is down to predetermined Second Threshold nMin, 2Below.
Therefore, now in step S20, determine input speed n31Less than predetermined Second Threshold nMin, 2(S20: " Y ").Cause And, the method performs step S30.
In step s 30, the gear that present speed v and variator 31-38 based on vehicle is engaged, ECU 50 is electrically The clutch 20 making separation is re-engaged (S30: " 20=" 1 " "), and alternately through engaging clutch 20 or by activating Starter (not shown) starts the internal combustion engine 10 (S30: " 10=" 1 " ") shut down.In the exemplary embodiment of Fig. 2, speed Degree v exceedes the predetermined threshold of fifth speed position.Accordingly, because enough moments of torsion be passed to variator power shaft 31 and and its The internal combustion engine 10 coupled, so internal combustion engine 10 starts by engaging clutch 20.
Owing to fifth speed position is engaged, the clutch 20 of joint makes vehicle deceleration (not shown in Fig. 2), thus directly to driving The person of sailing sends the signal of downshift further, by the mode being familiar with traditional manual transmission.Therefore, driver is advantageously not required to Its driving habits is made to be adapted to cruise mode.
In step s 30, cruise mode terminates (S30: " S=" 0 " "), and the auto-speed of vehicle controls in step S60 In activated, to be maintained at the speed v (t of vehicle when cruise mode terminates3).By auto-speed control, can again build Vertical cruise mode (S10: " S=" 1 " ").
As understood from above illustrative examples, if the gear engaged under cruise mode is enough Time, driver obtains good suggestion (Fig. 2: t before downshift1;Fig. 3: S50).If it is not this is reacted by he or she and defeated Enter the input speed n of axle 3131It is reduced to the second predetermined threshold nMin, 2Below (Fig. 2: t3;Fig. 3: S20 " Y " "), then cruise mode Terminating, clutch 20 is re-engaged, and internal combustion engine 10 is started by the joint of trigger or clutch 20.Accordingly, because it is right The low input speed n of power shaft 3131The tooth of the relatively low gear on (reducing due to the higher gear of joint) and power shaft 31 Bigger speed difference between the high rotating speed of wheel is compensated, the probability of the pressure by possible (excessively) of synchronizer 34 It is minimized.
ECU 50 can include the digital CPU (CPU) communicated with memory system and bus interface or process Device.Replacing ECU, this system can have the different types of processor for providing electronic logic, such as, can be only fitted to car Embedded controller, car-mounted computer or arbitrary processing module in.CPU is configured to execution and is stored in memory system The instruction as program, and send a signal to bus interface and from bus interface receive signal.Memory system can include respectively Plant type of memory, including optical memory, magnetic memory, solid-state memory and other non-transitory memory.Bus interface can To be configured to send, receive and modulate simulation and/or digital signal between various sensors and control equipment.Described journey Sequence can implement method disclosed herein, thus allows CPU to perform the step in this control method.
The program being stored in memory system via cable or is wirelessly transmitted from the external world.At its exterior, described Program is visible usually used as computer program, and it is also referred to as the temporary or meter of non-transitory in the prior art Calculation machine computer-readable recording medium or machine readable media, and it should be understood to the computer program code that is previously stored on carrier, this load Body is substantially preferably temporary or non-transitory, thus described computer program is it is believed that be substantially temporary transient Property or non-transitory.
Temporary computer program e.g. signal, such as electromagnetic signal (such as optical signalling), its be by based on The temporary carrier of calculation machine program code.Permissible by traditional modulation technique (QPSK as numerical data) modulated signal Deliver this computer program code, such as, represent that the binary data of described computer program code is at temporary electromagnetism Transmitted on signal.When being wirelessly connected to notebook computer transmission computer program code by WiFi, this letter Number used.
In the case of non-transitory computer program, computer program code is embedded in tangible storage media In.Storage medium is then above-mentioned non-transitory carrier so that computer program code is in recoverable mode permanently Be nonpermanently stored on this storage medium or in.Described storage medium can be known tradition in computer technology Type, such as flash memory, Asic, CD etc..
When at least one exemplary embodiment is given in above-mentioned summary of the invention and detailed description of the invention, Ying Yi Know to there is substantial amounts of modification.
Especially, as has been described, variator can have different structures, particularly in, axle 37 constitute gear 35, 36 power shafts being fixed to the upper, this power shaft is, optionally, coupled to internal combustion engine 10 by clutch 20, and, do not deposit at axle 38 Or when being integrally formed with axle 31, axle 31 constitutes the output shaft of differential gear that can be directly coupled to be represented by circle in Fig. 1. In this case, synchronizer 34 must be compensated for being permanently attached to such as the 32 of power shaft 37,33 by gear 35,36 Gear and the output shaft 31 being permanently attached to driven pulley between speed difference.
According to an alternative embodiment, in step s 30, if variator is in neutral gear, can not executive termination cruise Pattern (" S=" 0 " ").Instead, start internal combustion engine 10 (S30: " 10=" 1 " ") in first passage trigger, and engage subsequently After clutch 20 (S30: " 20=" 1 " "), cruise mode (S30: " S=" 1 " ") can be kept.When determining that driver attempts to change Shelves are to the gear outside neutral gear, and clutch 20 can be separated to allow this speed-change and gearshift automatically.
Should be further appreciated that illustrative embodiments or multiple illustrative embodiments are only examples, and be not intended to appoint Where formula limits the scope of the present invention, applies or construct.On the contrary, previously described summary of the invention and detailed description of the invention will be to these Skilled person provides and is used for implementing the convenient route map of at least one embodiment, it will be understood that, can be to being embodied as The layout of the element described in example and function carry out various change, without deviating from claims and their legal equivalent The scope illustrated.
Reference
10 internal combustion engines
20 clutches
31 power shafts (variator)
The gear of five/sixth speed position on 32/33 power shaft
34 synchronizers
The gear of 35/36 countershaft
37 countershafts
38 output shafts (variator)
40 driven pulleys
50 ECU (for operating the equipment of vehicle)
n31Input speed
nMin, 1/nMin, 2First/second predetermined threshold
V car speed

Claims (15)

1. for the method that operates vehicle, described vehicle have variator (31-38), at least one be connected to described speed change The driven pulley (40) of device (31-38), internal combustion engine (10) and be used for coupling variator (31-38) and the clutch of internal combustion engine (10) (20), wherein, in cruise mode, if it is determined that the input speed (n of variator (31-38)31) less than predetermined threshold (nMin, 1, nMin, 2) (S20, S40), then clutch (20) engages (S30) automatically, and/or internal combustion engine (10) operating (S30), and/or, send Engage the information (S50) of predetermined gear.
2. according to the method described in aforementioned claim, wherein, internal combustion engine (10) is by by engaging clutch (20) or starter And starting operation (S30), it is based particularly on the speed (v) of vehicle and/or the gear of the joint of variator (31-38).
3. according to a described method of aforementioned claim, wherein, if it is determined that the input speed of variator (31-38) (n31) less than the first predetermined threshold (nMin, 1) (S40), the then information (S50) of the predetermined gear of transmission joint, and wherein, if really Determine the input speed (n of variator (31-38)31) less than the second predetermined threshold (nMin, 2) (S20), this second predetermined threshold (nMin, 2) less than the first predetermined threshold (nMin, 1), then clutch (20) engages (S30) and/or internal combustion engine (10) operating (S30).
4. according to a described method of aforementioned claim, wherein, if clutch (20) engages and/or internal combustion engine (10) Operating, then cruise mode terminates (S30), and/or wherein, if clutch (20) engages and internal combustion engine (10) operates and variator (31-38) be in neutral, then cruise mode keeps.
5. according to the method described in aforementioned claim, wherein, if cruise mode terminates, then start auto-speed and control (S60)。
6. according to a described method of aforementioned claim, wherein, clutch (20) is operated electrically.
7. according to a described method of aforementioned claim, wherein, if cruise mode starts (S10), it is based particularly on Speed inputs, then travel the time-division luxuriant clutch (20) at vehicle and/or close internal combustion engine (10).
8. one kind for operating the system (50) of vehicle, described vehicle have variator (31-38), at least one be connected to described The driven pulley (40) of variator (31-38), internal combustion engine (10), it is used for coupling variator (31-38) and the clutch of internal combustion engine (10) Device (20), described system includes:
Equipment (50), its input speed (n being used for determining variator (31-38)31) less than predetermined threshold (nMin, 1, nMin, 2);With
Equipment (50), it is for if it is determined that the input speed (n of variator (31-38)31) less than predetermined threshold (nMin, 2), then certainly Dynamic joint clutch (20);And/or
Equipment (50), it is for if it is determined that the input speed (n of variator (31-38)31) less than predetermined threshold (nMin, 2), then certainly Dynamic operating internal combustion engine (10);And/or
Equipment (50), it is for if it is determined that the input speed (n of variator (31-38)31) less than predetermined threshold (nMin, 1), then certainly The dynamic information sending the predetermined gear of joint.
9., according to the system (50) described in aforementioned claim, it includes for engaging setting of clutch (20) and/or starter Standby (50).
10. according to a described system (50) of aforementioned claim, including:
Equipment (50), it is for if it is determined that the input speed (n of variator (31-38)31) less than the first predetermined threshold (nMin, 1), Then automatically send the information engaging predetermined gear, and
Equipment (50), it is for if it is determined that the input speed (n of variator (31-38)31) less than the second predetermined threshold (nMin, 2), This second predetermined threshold is less than the first predetermined threshold (nMin, 1), the most automatically engage clutch (20) and/or operating internal combustion engine (10).
11. according to a described system (50) of aforementioned claim, including
Equipment (50), if it engages for clutch (20) and/or internal combustion engine (10) operating, then terminates cruise mode, and/or
Equipment (50), if it engages for clutch (20) and internal combustion engine (10) operates and variator (31-38) is in neutral, Then maintain cruise mode.
12. according to a described system (50) of aforementioned claim, including equipment (50), if this equipment is for cruise mould Formula terminates, then start auto-speed and control.
13. according to a described system (50) of aforementioned claim, and wherein, clutch (20) is the clutch of electric power operation Device.
14. according to a described system (50) of aforementioned claim, and it includes equipment (50), if this equipment is for cruise Pattern starts, and is based particularly on speed input, is then travelling the time-division luxuriant clutch (20) at vehicle and/or closing internal combustion engine (10)。
15. 1 kinds of vehicles, particularly passenger vehicles, it include variator (31-38), at least one be connected to described variator (31-38) driven pulley (40), internal combustion engine (10), it is used for coupling the clutch (20) of variator (31-38) and internal combustion engine (10), And a described equipment (50) according to aforementioned claim.
CN201610380224.9A 2015-03-26 2016-03-25 Method and system for operating car in sailing mode Pending CN106004877A (en)

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GB1505233.5A GB2536704A (en) 2015-03-26 2015-03-26 Method and system for operating a car in a sailing mode

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Application publication date: 20161012