JPS57140952A - Speed reduction shock reducing method for car - Google Patents

Speed reduction shock reducing method for car

Info

Publication number
JPS57140952A
JPS57140952A JP56026381A JP2638181A JPS57140952A JP S57140952 A JPS57140952 A JP S57140952A JP 56026381 A JP56026381 A JP 56026381A JP 2638181 A JP2638181 A JP 2638181A JP S57140952 A JPS57140952 A JP S57140952A
Authority
JP
Japan
Prior art keywords
speed
engine
engine speed
car
during
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
JP56026381A
Other languages
Japanese (ja)
Other versions
JPH0313095B2 (en
Inventor
Yoshio Asayama
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP56026381A priority Critical patent/JPS57140952A/en
Publication of JPS57140952A publication Critical patent/JPS57140952A/en
Publication of JPH0313095B2 publication Critical patent/JPH0313095B2/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

Abstract

PURPOSE:To reduce the speed reduction shock by blocking the shift-down control signal, during the decelleration of brake, and controlling the rotation of an engine. CONSTITUTION:Under braking operation, the control of engine speed is stopped at the shift down while the engine speed is controlled for predetermined time at the lock-up control then the engine speed and the torque controller output speed are combined to reduce the speed reduction shock. Assuming the gear ratio of the reduction gear is 1.3 while the torque converter output speed at the shift down is 1,300rpm, the engine speed must be brought to 1,690rpm (Curve II) during the speed change time DELTAT in order to prevent the variation of the car speed. While under the speed reduction through the brake operation, the car speed will drop during the time DELTAT (Curve III), thereby the increase of the engine speed will cause the acceleration during the speed change thus to produce the speed change shock. Consequently, in this case, the increase control of the engine speed is stopped.
JP56026381A 1981-02-25 1981-02-25 Speed reduction shock reducing method for car Granted JPS57140952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56026381A JPS57140952A (en) 1981-02-25 1981-02-25 Speed reduction shock reducing method for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56026381A JPS57140952A (en) 1981-02-25 1981-02-25 Speed reduction shock reducing method for car

Publications (2)

Publication Number Publication Date
JPS57140952A true JPS57140952A (en) 1982-08-31
JPH0313095B2 JPH0313095B2 (en) 1991-02-21

Family

ID=12191940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56026381A Granted JPS57140952A (en) 1981-02-25 1981-02-25 Speed reduction shock reducing method for car

Country Status (1)

Country Link
JP (1) JPS57140952A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956877A (en) * 1982-09-24 1984-04-02 Secoh Giken Inc Automatic transmission
JPS61113526A (en) * 1984-11-09 1986-05-31 Toyota Motor Corp Automatic transmission controlling device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562229A (en) * 1979-06-08 1981-01-10 Peugeot Transmission mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562229A (en) * 1979-06-08 1981-01-10 Peugeot Transmission mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956877A (en) * 1982-09-24 1984-04-02 Secoh Giken Inc Automatic transmission
JPS61113526A (en) * 1984-11-09 1986-05-31 Toyota Motor Corp Automatic transmission controlling device
JPH0422740B2 (en) * 1984-11-09 1992-04-20 Toyota Motor Co Ltd

Also Published As

Publication number Publication date
JPH0313095B2 (en) 1991-02-21

Similar Documents

Publication Publication Date Title
JPS5747056A (en) Oil pressure control device for automatic transmission
CA2129815A1 (en) Control System/Method for Engine Brake Assisted Shifting
EP0397330A3 (en) Vehicle traction control method
EP0384413A3 (en) Control system for vehicle with automatic transmission
ES8103818A1 (en) Electronic device for controlling the lock-up of a hydrodynamic torque converter, and method of operation.
ES8304282A1 (en) Clutch control means.
JPS57140952A (en) Speed reduction shock reducing method for car
JPS55155949A (en) Line pressure controller in automatic speed change gear
JPS57184752A (en) Control system of automatic speed changer for vehicle
JPS5743050A (en) Lock up type automatic transmission control unit for engine vehicle having fuel cut device
JPS6485844A (en) Control device for driving system of engine and automatic transmission
FR2318355A1 (en) Vehicle drive with optional regenerative braking - uses engine or flywheel only and engine and flywheel modes with automatic control
JPS55129646A (en) Speed change controller of automatic transmission
JPS5653945A (en) Antiskid controller
JPS5757959A (en) Lock-up control method of torque converter for rolling stock
EP0384300A3 (en) Engine torque control system for vehicle with automatic transmission
JPS5657525A (en) Safety apparatus for car with automatic speed change gear
JPS5758518A (en) Speed0change controlling system for car rquipped with hydraulic transmission gear
JPS55145027A (en) Method and apparatus for controlling neutral travelling
JPS5229026A (en) Method of controlling stepless transmission
JPS57932A (en) Antiskid apparatus
JPS5670162A (en) Transmission device
JPS6449747A (en) Returning device for controlling coasting time of automatic transmission of vehicle
JPS5757957A (en) Lock-up controller for automatic change gear
JPS5779360A (en) Lock-up controller for automatic speed change gear