Title:
CONTROL METHOD FOR FLUID CLUTCH FOR VEHICLE
Document Type and Number:
Japanese Patent JPH01208238
Kind Code:
A
Abstract:
PURPOSE:To reduce excessive sense of engine brake during deceleration and enhance the driving sense by giving the capacity factor of a fluid clutch a smaller value than in the case of the engine driving condition when the engine is put in driven condition at the time of the car being in deceleration. CONSTITUTION:A capacity factor altering mechanism 300 controls the internal pressure of a fluid coupling 12. This includes a lockup solenoid valve 77, a quick release valve 312 to quickly release the working oil pressure within a working chamber 310 of the fluid coupling 12, and a quick solenoid valve 78 to control the position of this valve 312. When this solenoid valve 78 releases the oil pressure supplied to a valve chamber 342 through an oil path 340 to a drain, a spool 344 moves in the counter-arrow YA direction, and quick release valve 312 releases the working oil in the working chamber 310 to the drain via oil paths 320, 346 and a throttle 348. Thereby the inner pressure of the fluid coupling 12 held till then is sunk, and the capacity factor is lessened.
Inventors:
MORISAWA KUNIO
Application Number:
JP3146088A
Publication Date:
August 22, 1989
Filing Date:
February 12, 1988
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60W10/02; B60W10/04; B60W10/10; B60W10/18; B60W10/184; F16D33/06; F16D33/20; F16H41/26; (IPC1-7): B60K41/02; F16D33/06
Domestic Patent References:
| JP38009367A | ||||
| JPS6044419A | 1985-03-09 |
Attorney, Agent or Firm:
Adachi Tsutomu
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