JPS6469859A - Control device for automatic speed change gear - Google Patents

Control device for automatic speed change gear

Info

Publication number
JPS6469859A
JPS6469859A JP22472887A JP22472887A JPS6469859A JP S6469859 A JPS6469859 A JP S6469859A JP 22472887 A JP22472887 A JP 22472887A JP 22472887 A JP22472887 A JP 22472887A JP S6469859 A JPS6469859 A JP S6469859A
Authority
JP
Japan
Prior art keywords
power
lockup
control
fastening force
operation mode
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
JP22472887A
Other languages
Japanese (ja)
Inventor
Keiji Bota
Kenji Sawa
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.)
Mazda Motor Corp
Original Assignee
Mazda 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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP22472887A priority Critical patent/JPS6469859A/en
Priority to US07/242,282 priority patent/US4957194A/en
Publication of JPS6469859A publication Critical patent/JPS6469859A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Fluid Gearings (AREA)

Abstract

PURPOSE:To improve power performance during selection of a power mode, by a method wherein, during selection of a power mode detected by an operation mode detecting means, control of the fastening force of the lockup means of a torque converter is prohibited. CONSTITUTION:The fastening force of a lockup means 5 of a torque converter 2 is controlled to a target value by a control means 20, and an engine power is excellently transmitted to a drive shaft through the lockup means 5 as transmission of the fluctuation in torque of an engine is effectively suppressed. In this case, when it is detected by an operation mode detecting means 21 that an operation mode is selected as a power mode, during demand of power performance, control of the fastening force of the lockup means 5 by means of the control means 20 is forcibly prohibited by a prohibiting means 22, the lockup means 5 is completely released, and the loss of an engine power is relieved by an amount equivalent to that of the lockup means 5. This constitution enables improvement of power performance during selection of power mode as vibration of a car body during normal running is reduced and fuel consumption is improved.
JP22472887A 1987-09-08 1987-09-08 Control device for automatic speed change gear Pending JPS6469859A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP22472887A JPS6469859A (en) 1987-09-08 1987-09-08 Control device for automatic speed change gear
US07/242,282 US4957194A (en) 1987-09-08 1988-09-08 Torque converter slip control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22472887A JPS6469859A (en) 1987-09-08 1987-09-08 Control device for automatic speed change gear

Publications (1)

Publication Number Publication Date
JPS6469859A true JPS6469859A (en) 1989-03-15

Family

ID=16818313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22472887A Pending JPS6469859A (en) 1987-09-08 1987-09-08 Control device for automatic speed change gear

Country Status (1)

Country Link
JP (1) JPS6469859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028710A1 (en) * 1989-09-09 1991-03-28 Jatco Corp CONTROL DEVICE FOR THE BRIDGE CLUTCH IN AN AUTOMATIC CHANGEOVER GEARBOX

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733253A (en) * 1980-08-04 1982-02-23 Mitsubishi Motors Corp Torque transmitter
JPS5924555B2 (en) * 1975-12-22 1984-06-09 株式会社日立製作所 Hikariketsugohandoutaisouchinojitsusohouhou
JPS63195465A (en) * 1987-02-09 1988-08-12 Honda Motor Co Ltd Method for controlling the operation of a clutch for a fluid torque converter in a vehicle transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5924555B2 (en) * 1975-12-22 1984-06-09 株式会社日立製作所 Hikariketsugohandoutaisouchinojitsusohouhou
JPS5733253A (en) * 1980-08-04 1982-02-23 Mitsubishi Motors Corp Torque transmitter
JPS63195465A (en) * 1987-02-09 1988-08-12 Honda Motor Co Ltd Method for controlling the operation of a clutch for a fluid torque converter in a vehicle transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028710A1 (en) * 1989-09-09 1991-03-28 Jatco Corp CONTROL DEVICE FOR THE BRIDGE CLUTCH IN AN AUTOMATIC CHANGEOVER GEARBOX
US5086894A (en) * 1989-09-09 1992-02-11 Jatco Corporation Lock-up clutch control system for automatic power transmission
DE4028710C2 (en) * 1989-09-09 1996-12-12 Jatco Corp Control device for a slip-controllable lock-up clutch of a hydrodynamic torque converter of a motor vehicle automatic transmission

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