System for controlling an electro-magnetic clutch for automobile

Details System for controlling an electro-magnetic clutch for automobile System for controlling an electro-magnetic clutch for automobile

1981-05-11

1984-11-27

Krizmanich, George H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 215, B60K 4122

Patent

active

044846720

ABSTRACT:
A system for controlling an electro-magnetic clutch of an internal combustion engine mounted on a vehicle, which is capable of eliminating residual magnetism during operation of a shift lever of a transmission. The electro-magnetic clutch has a drive member secured to a crankshaft of the internal combustion engine, a magnetizing coil provided in the drive member and a driven member adjacent said drive member. A neutral switch is provided for detecting when the shift lever is in a neutral position and a shift lever switch is provided for producing a signal during operation of the shift lever for the transmission. Both signals of the neutral switch and the shift lever switch are fed to a control circuit. The control circuit is so arranged that the current flowing through the magnetizing coil is inverted in dependency on the output signals of the neutral switch and shift lever switch, so that the residual magnetism in the clutch may be eliminated.

REFERENCES:
patent: 2688388 (1959-09-01), Gill
patent: 3730317 (1973-05-01), Jaeschke
patent: 3752284 (1973-08-01), Brittain et al.
patent: 4086994 (1978-05-01), Hirosawa et al.

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