CN109667926A - A kind of low speed of wet type double-clutch automatic gearbox is put into gear method in advance - Google Patents

A kind of low speed of wet type double-clutch automatic gearbox is put into gear method in advance Download PDF

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Publication number
CN109667926A
CN109667926A CN201910061701.9A CN201910061701A CN109667926A CN 109667926 A CN109667926 A CN 109667926A CN 201910061701 A CN201910061701 A CN 201910061701A CN 109667926 A CN109667926 A CN 109667926A
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Prior art keywords
gear
hung
kept
strategy
executes
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CN201910061701.9A
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CN109667926B (en
Inventor
向光军
黄辉
韩涌波
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Chongqing Changan Automobile Co Ltd
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Chongqing Changan Automobile Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control 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
    • F16H61/02—Control 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
    • F16H61/0202—Control 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
    • F16H61/0204—Control 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/0208—Selector apparatus with means for suppression of vibrations or reduction of noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control 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
    • F16H2061/0075—Control 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 a particular control method

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

It puts into gear in advance method the invention discloses a kind of low speed of wet type double-clutch automatic gearbox, this method are as follows: calculate shift lever position and judged, if gear lever is kept off in P, P gear pre-hung strategy is then executed, if gear lever is kept off in R, executes R gear pre-hung strategy, if gear lever is kept off in N, N gear pre-hung strategy is then executed, if gear lever is kept off in D, executes D gear pre-hung strategy；When R keeps off and running, if R keeps off vehicle velocity VRGreater than the First Speed threshold value V of settingR1, then 1 gear is exited, if moving back frequency threshold value b and R the gear vehicle velocity V that gear number is less than setting in the time threshold T of settingRLess than the second speed threshold value V of settingR2, then 1 gear is hung up, if moving back gear number in T is greater than or equal to b, no longer hangs 1 gear；In 1 gear operation, if 1 gear vehicle velocity V1Greater than third speed threshold value VDAnd R gear is being kept off, then moves back R gear；The present invention can solve the problems, such as while guaranteeing the response time because running at a low speed pre-hung gear bring knock.

Description

A kind of low speed of wet type double-clutch automatic gearbox is put into gear method in advance
Technical field
The invention belongs to wet type double-clutch automatic gearbox fields, and in particular to a kind of wet type double-clutch automatic gearbox Low speed is put into gear method in advance.
Background technique
Gear pre-hung be in order to promoted shift speed reduce it is unnecessary into keep off and move back gear operation and propose a technology. Common shift logic be driver have shift wish when start to put into gear, then shift complete, and put into gear in advance be driver without Shift wish is the technology that driver hangs up gear when still having shift possibility in advance.Become automatically in the double clutches of wet type In the application process of fast device, in 1 gear operation (i.e. low speed operation), creeps and start to walk to be promoted to reverse gear after 1 gear Brake stop Response, need pre-hung to reverse gear；If when running at a low speed, by 1 gear and pre-hung always of reversing gear, creep in 1 gear and reversing gear or When person starts to walk, it just will appear the gear bring knock for not transmitting torque because of pre-hung, although solving response problem in this way, But it will cause very big complaint of the client to abnormal sound sound.
Summary of the invention
It puts into gear in advance method the object of the present invention is to provide a kind of low speed of wet type double-clutch automatic gearbox, to guarantee to ring While between seasonable, solve the problems, such as because running at a low speed pre-hung gear bring knock.
The low speed of wet type double-clutch automatic gearbox of the present invention is put into gear method in advance, this method are as follows: calculates gear lever Position is simultaneously judged, if gear lever is kept off in P, executes P gear pre-hung strategy, if gear lever is kept off in R, it is pre- to execute R gear Strategy is hung, if gear lever is kept off in N, executes N gear pre-hung strategy, if gear lever is kept off in D, executes D gear pre-hung strategy.
Wherein, the R keeps off pre-hung strategy are as follows:
The first step, setting move back gear number and are equal to 0 and start timing, then judge whether R gear is keeping off, if it is, executing second Otherwise step hangs R gear, then executes second step；
Second step judges whether timing time is greater than the time threshold T of setting, if it is, terminating, otherwise executes third step；
Third step judges whether 1 gear is keeping off, if it is, executing the 4th step, otherwise executes the 5th step；
4th step judges that R keeps off vehicle velocity VRWhether the First Speed threshold value V of setting is greater thanR1, if it is, moving back 1 gear, and move back gear Then number plus 1 returns and executes second step, otherwise directly return and execute second step；
5th step judges whether to move back frequency threshold value b and R the gear vehicle velocity V that gear number is less than settingRLess than the second speed threshold of setting Value VR2, if it is, hanging 1 gear, then return and execute second step, otherwise directly return and execute second step.
Wherein, the D keeps off pre-hung strategy are as follows:
The first step judges whether 1 gear is keeping off, if it is, executing second step, otherwise hangs 1 gear, then executes second step；
Second step judges whether 1 gear vehicle velocity V1Greater than third speed threshold value VDAnd R gear is being kept off, if it is, moving back R gear, is then tied Otherwise beam directly terminates.
Wherein, the P keeps off pre-hung strategy are as follows: first determines whether 1 gear is keeping off, if 1 gear is being kept off, 1 gear is kept to keep off State hangs 1 gear if 1 gear or not；Then judge whether R gear is keeping off, if R gear is being kept off, move back R gear, if R gear is not It is keeping off, is then keeping R gear not in gear state.In P gear, in such a way that the gear of pre-hung 1 moves back R gear, the response time of starting ensure that.
Wherein, the N keeps off pre-hung strategy are as follows: and judge whether 1 gear is keeping off, if 1 gear is being kept off, keeps 1 to keep off in gear state, If 1 gear or not, 1 gear is hung.In N gear, in such a way that pre-hung 1 is kept off, the response time of starting is also ensured.
The present invention has the effect that
When R keeps off and running, if R keeps off vehicle velocity VRGreater than the First Speed threshold value V of settingR1, then 1 gear is exited, if in setting Frequency threshold value b and R the gear vehicle velocity V that gear number is less than setting are moved back in time threshold TRLess than the second speed threshold value V of settingR2, then 1 gear is hung up, if moving back the frequency threshold value b that gear number is greater than or equal to setting in the time threshold T of setting, no longer hangs 1 gear； In 1 gear operation, if 1 gear vehicle velocity V1Greater than third speed threshold value VDAnd R gear is being kept off, then moves back R gear；This method ensure that R While the response time of gear and 1 gear, reduce unnecessary 1 gear and R gear into keeping off, move back gear number, effective solution is wet Percussion problem when formula double-clutch automatic gearbox low speed is run.
Detailed description of the invention
Fig. 1 is the logical flow chart of embodiment.
Fig. 2 is the flow chart for executing R in embodiment and keeping off pre-hung strategy.
Fig. 3 is the flow chart for executing D in embodiment and keeping off pre-hung strategy.
Fig. 4 is the flow chart for executing P in embodiment and keeping off pre-hung strategy.
Fig. 5 is the flow chart for executing N in embodiment and keeping off pre-hung strategy.
Specific embodiment
It elaborates with reference to the accompanying drawing to the present invention.
The low speed of wet type double-clutch automatic gearbox as shown in Figures 1 to 5 is put into gear method in advance are as follows: calculates shift lever position And judged, if gear lever is kept off in P, P gear pre-hung strategy is executed, if gear lever is kept off in R, executes R gear pre-hung plan Slightly, if gear lever is kept off in N, N gear pre-hung strategy is executed, if gear lever is kept off in D, executes D gear pre-hung strategy.
As shown in Fig. 2, R keeps off pre-hung strategy are as follows:
The first step, setting move back gear number and are equal to 0 and start timing, then judge whether R gear is keeping off, if it is, R gear is kept to exist Gear state, and second step is executed, R gear is otherwise hung, second step is then executed；
Second step judges whether timing time is greater than the time threshold T of setting, if it is, terminating, otherwise executes third step；
Third step judges whether 1 gear is keeping off, if it is, keeping 1 gear in gear state, and executes the 4th step, otherwise executes the 5th Step；
4th step judges that R keeps off vehicle velocity VRWhether the First Speed threshold value V of setting is greater thanR1, if it is, moving back 1 gear, and move back gear Then number plus 1 returns and executes second step, otherwise directly return and execute second step；
5th step judges whether to move back frequency threshold value b and R the gear vehicle velocity V that gear number is less than settingRLess than the second speed threshold of setting Value VR2, if it is, hanging 1 gear, then return and execute second step, otherwise directly return and execute second step；I.e. if in setting The frequency threshold value b that gear number is greater than or equal to setting is moved back in time threshold T, then no longer hangs 1 gear.
As shown in figure 3, D keeps off pre-hung strategy are as follows:
The first step judges whether 1 gear is keeping off, if it is, keeping 1 gear in gear state, and executes second step, otherwise hangs 1 gear, so After execute second step；
Second step judges whether 1 gear vehicle velocity V1Greater than third speed threshold value VDAnd R gear is being kept off, if it is, moving back R gear, is then tied Otherwise beam directly terminates.
It first determines whether 1 gear is keeping off, if 1 gear is being kept off, keeps 1 gear in gear state, if 1 gear or not, Hang 1 gear；Then vehicle velocity V is kept off 11Greater than third speed threshold value VDWhen, judge whether R gear is keeping off, if R gear is being kept off, move back R gear, If R gear or not, keep R gear not in gear state.
As shown in figure 4, P keeps off pre-hung strategy are as follows:
The first step judges whether 1 gear is keeping off, if it is, keeping 1 gear in gear state, and executes second step, otherwise hangs 1 gear, so After execute second step；
Second step judges whether R gear is keeping off, if it is, moving back R gear, then terminates, otherwise directly terminates.
It first determines whether 1 gear is keeping off, if 1 gear is being kept off, keeps 1 gear in gear state, if 1 gear or not, Hang 1 gear；Then judge whether R gear is keeping off, if R gear is being kept off, move back R gear, if R gear or not, keep R gear not in gear shape State.
As shown in figure 5, N keeps off pre-hung strategy are as follows: judge whether 1 gear is keeping off, if it is, keeping 1 gear in gear state, and tie Otherwise beam is hung 1 gear, is then terminated.Judge whether 1 gear is keeping off, if 1 gear is being kept off, keeps 1 gear in gear state, if 1 gear It is not keeping off, is then hanging 1 gear.

Claims (3)

  1. A kind of method 1. low speed of wet type double-clutch automatic gearbox is put into gear in advance, this method are as follows: calculate shift lever position and carry out Judgement executes P gear pre-hung strategy if gear lever is kept off in P, if gear lever is kept off in R, executes R gear pre-hung strategy, if Gear lever is kept off in N, then executes N gear pre-hung strategy, if gear lever is kept off in D, executes D gear pre-hung strategy；It is characterized in that,
    The R keeps off pre-hung strategy are as follows:
    The first step, setting move back gear number and are equal to 0 and start timing, then judge whether R gear is keeping off, if it is, executing second Otherwise step hangs R gear, then executes second step；
    Second step judges whether timing time is greater than the time threshold T of setting, if it is, terminating, otherwise executes third step；
    Third step judges whether 1 gear is keeping off, if it is, executing the 4th step, otherwise executes the 5th step；
    4th step judges that R keeps off vehicle velocity VRWhether the First Speed threshold value V of setting is greater thanR1, if it is, moving back 1 gear, and move back gear Then number plus 1 returns and executes second step, otherwise directly return and execute second step；
    5th step judges whether to move back frequency threshold value b and R the gear vehicle velocity V that gear number is less than settingRLess than the second speed threshold of setting Value VR2, if it is, hanging 1 gear, then return and execute second step, otherwise directly return and execute second step；
    The D keeps off pre-hung strategy are as follows:
    The first step judges whether 1 gear is keeping off, if it is, executing second step, otherwise hangs 1 gear, then executes second step；
    Second step judges whether 1 gear vehicle velocity V1Greater than third speed threshold value VDAnd R gear is being kept off, if it is, moving back R gear, is then tied Otherwise beam directly terminates.
  2. The method 2. low speed of wet type automatic transmission according to claim 1 is put into gear in advance, which is characterized in that the P gear is pre- Hang strategy are as follows: first determine whether 1 gear is keeping off, if 1 gear is being kept off, 1 gear is kept to hang in gear state if 1 gear or not 1 gear；Then judge whether R gear is keeping off, if R gear is being kept off, move back R gear, if R gear or not, keep R gear not in gear shape State.
  3. The method 3. low speed of wet type double-clutch automatic gearbox according to claim 1 or 2 is put into gear in advance, which is characterized in that The N keeps off pre-hung strategy are as follows: judges whether 1 gear is keeping off, if 1 gear is being kept off, keeps 1 gear in gear state, if 1 gear does not exist Gear then hangs 1 gear.
CN201910061701.9A 2019-01-23 2019-01-23 Low-speed pre-gear-shifting method of wet type double-clutch automatic transmission Active CN109667926B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114151540A (en) * 2021-12-01 2022-03-08 中国第一汽车股份有限公司 Pre-gear-engagement control method and system for dual-clutch automatic transmission and vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150000445A1 (en) * 2013-06-26 2015-01-01 Delta Kogyo Co., Ltd. Automatic transmission shifter
EP2921745A1 (en) * 2014-02-28 2015-09-23 Aisin Seiki Kabushiki Kaisha Automatic transmission for vehicle
JP2015190602A (en) * 2014-03-28 2015-11-02 富士重工業株式会社 Control device of forward/reverse changeover device and control method
CN105042063A (en) * 2015-07-13 2015-11-11 安徽江淮汽车股份有限公司 Positive torque sequence downshift control method of wet double-clutch transmission
JP2016150675A (en) * 2015-02-18 2016-08-22 トヨタ自動車株式会社 Hybrid vehicle
CN107246472A (en) * 2017-06-15 2017-10-13 中国第汽车股份有限公司 For the gear shifting force self-learning method without synchronizer speed variator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150000445A1 (en) * 2013-06-26 2015-01-01 Delta Kogyo Co., Ltd. Automatic transmission shifter
EP2921745A1 (en) * 2014-02-28 2015-09-23 Aisin Seiki Kabushiki Kaisha Automatic transmission for vehicle
JP2015190602A (en) * 2014-03-28 2015-11-02 富士重工業株式会社 Control device of forward/reverse changeover device and control method
JP2016150675A (en) * 2015-02-18 2016-08-22 トヨタ自動車株式会社 Hybrid vehicle
CN105042063A (en) * 2015-07-13 2015-11-11 安徽江淮汽车股份有限公司 Positive torque sequence downshift control method of wet double-clutch transmission
CN107246472A (en) * 2017-06-15 2017-10-13 中国第汽车股份有限公司 For the gear shifting force self-learning method without synchronizer speed variator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114151540A (en) * 2021-12-01 2022-03-08 中国第一汽车股份有限公司 Pre-gear-engagement control method and system for dual-clutch automatic transmission and vehicle

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