JPS57179460A - Method of controlling automatic transmission for vehicle - Google Patents

Method of controlling automatic transmission for vehicle

Info

Publication number
JPS57179460A
JPS57179460A JP56065884A JP6588481A JPS57179460A JP S57179460 A JPS57179460 A JP S57179460A JP 56065884 A JP56065884 A JP 56065884A JP 6588481 A JP6588481 A JP 6588481A JP S57179460 A JPS57179460 A JP S57179460A
Authority
JP
Japan
Prior art keywords
speed
shift
speed change
stage
requirement
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.)
Granted
Application number
JP56065884A
Other languages
Japanese (ja)
Other versions
JPS621142B2 (en
Inventor
Hiroshi Ito
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP56065884A priority Critical patent/JPS57179460A/en
Publication of JPS57179460A publication Critical patent/JPS57179460A/en
Publication of JPS621142B2 publication Critical patent/JPS621142B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/0437—Smoothing ratio shift by using electrical signals
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0444—Smoothing ratio shift during fast shifting over two gearsteps, e.g. jumping from fourth to second gear
    • F16H2061/0448—Smoothing ratio shift during fast shifting over two gearsteps, e.g. jumping from fourth to second gear using a particular sequence of gear ratios or friction members

Abstract

PURPOSE:To prevent occurrence of speed change shock by first shifting down the speed to one step lower stage and then shifting it up when the speed change gear is shifted down to the stage on which engine brake acts. CONSTITUTION:When shift range is set to D range so as to set speed change stage, it is judged whether or not requirement for D1 is achieved. The requirement D1 means that the speed change stage should be shifted down to the third speed from over-drive when the opening of a throttle is zero. When the requirement D1 is satisfied, command D1 is generated. The object of this command D1 is not to shift down the speed change stage from over drive directly to the third speed, but to shift the speed first down to the second speed and then shift it up to the third speed after a predetermined set time elapses.
JP56065884A 1981-04-30 1981-04-30 Method of controlling automatic transmission for vehicle Granted JPS57179460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065884A JPS57179460A (en) 1981-04-30 1981-04-30 Method of controlling automatic transmission for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065884A JPS57179460A (en) 1981-04-30 1981-04-30 Method of controlling automatic transmission for vehicle

Publications (2)

Publication Number Publication Date
JPS57179460A true JPS57179460A (en) 1982-11-05
JPS621142B2 JPS621142B2 (en) 1987-01-12

Family

ID=13299842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065884A Granted JPS57179460A (en) 1981-04-30 1981-04-30 Method of controlling automatic transmission for vehicle

Country Status (1)

Country Link
JP (1) JPS57179460A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109942A (en) * 1984-10-31 1986-05-28 Mazda Motor Corp Control device for automatic speed change gear
JPS6277245A (en) * 1985-09-30 1987-04-09 Aisin Seiki Co Ltd Automatic transmission
JPS6323062A (en) * 1986-07-15 1988-01-30 Aisin Seiki Co Ltd Lock-up clutch control method for vehicle automatic transmission unit
US4790215A (en) * 1985-06-26 1988-12-13 Toyota Jidosha Kabushiki Kaisha Method and system for control of two part type transmission providing limited time for auxiliary transmission overdrive engagement with main transmission speed reduction engagement
US4939955A (en) * 1987-07-28 1990-07-10 Nissan Motor Co., Ltd. Planetary gearing for automatic transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4923585B2 (en) * 2006-01-23 2012-04-25 スズキ株式会社 Shift control device for stepped automatic transmission

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109942A (en) * 1984-10-31 1986-05-28 Mazda Motor Corp Control device for automatic speed change gear
JPH0473021B2 (en) * 1984-10-31 1992-11-19 Mazda Motor
US4790215A (en) * 1985-06-26 1988-12-13 Toyota Jidosha Kabushiki Kaisha Method and system for control of two part type transmission providing limited time for auxiliary transmission overdrive engagement with main transmission speed reduction engagement
JPS6277245A (en) * 1985-09-30 1987-04-09 Aisin Seiki Co Ltd Automatic transmission
JPS6323062A (en) * 1986-07-15 1988-01-30 Aisin Seiki Co Ltd Lock-up clutch control method for vehicle automatic transmission unit
US4939955A (en) * 1987-07-28 1990-07-10 Nissan Motor Co., Ltd. Planetary gearing for automatic transmission

Also Published As

Publication number Publication date
JPS621142B2 (en) 1987-01-12

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