Title:
MAGNETIC POWDER CLUTCH CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS6184422
Kind Code:
A
Abstract:
PURPOSE:To make it possible to effect engine brake even a low speed range with the use of a magnetic powder clutch disposed between a drive source and a stepless speed change gear unit, by controlling a speed at which the above-mentioned clutch is disengaged, in accordance with the judgement on whether it is the time when engine brake is necessary, or not, upon gear shift operation. CONSTITUTION:In such an arrangement that a magnetic powder clutch 2 which couples magnetic powder 8 in a chain-like pattern upon energization of an exciting coil 5 to transmit the torque of a drive member 6 is transmitted to a driven member 7, is disposed between a crank shaft 1 and a stepless speed change gear unit 4, the exciting coil 8 is controlled by means of a clutch control device 9 in accordance with the operating condition, that is, it is controlled to be engaged when a vehicle speed detected by a vehicle speed detector exceeds a predetermined value. Further, when the output of an accelerator depressing condition detector 27 indicates that the accelerator is returned and the detected vehicle speed becomes lower than a predetermined vehicle speed in accordance with the output of a shift position detector 25, the clutch is controlled to be in its half-clutch condition, and when the detected vehicle speed is lower than the predetermined vehicle speed while the accelerator is returned, the clutch is controlled to be in its disengaged condition.
Inventors:
MIYAURA YASUHIKO
MACHIDA TAKASHI
MACHIDA TAKASHI
Application Number:
JP20498784A
Publication Date:
April 30, 1986
Filing Date:
September 29, 1984
Export Citation:
Assignee:
NIPPON SEIKO KK
International Classes:
B60W10/02; B60W10/10; B60W10/109; F16D37/02; F16D48/06; F16H15/38; F16H61/18; (IPC1-7): F16D37/02
Domestic Patent References:
| JPS5969563A | 1984-04-19 | |||
| JPS5899546A | 1983-06-13 |