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System for controlling an electromagnetic clutch for a vehicle

Patent ·
OSTI ID:6340801
;
A system is described for controlling an electromagnetic clutch for a motor vehicle having an infinitely variable belt-drive transmission which has a drive reverse, and a neutral range, and a lever for selecting the ranges, the system comprising: vehicle speed detecting means for producing a vehicle speed signal; first switch means for detecting the position of the selector lever and for producing output signals depending on the reverse range, drive range and a neutral range; second switch means for producing output signals dependent on depression and release of an accelerator pedal of the vehicle; first means for producing a reverse clutch current signal dependent on a signal of the first switch means indicative of a neutral position of the selector lever; second means for producing a vehicle start clutch current signal dependent on the signal from the second switch means at the depression of the accelerator pedal and on a signal from the vehicle speed detecting means at a low vehicle speed; third means for producing a small drag current signal dependent on the signal at low vehicle speed and on the signal from the second switch means at the release of the accelerator pedal; fourth means for producing a lock-up engage current signal dependent on the signal at middle and high vehicle speed; and output decision means applied with each of the current signals for controlling the current passing through a coil in the electromagnetic clutch in dependency on the applied current signal.
Assignee:
Fuji Jukogyo Kabushiki Kaisha, Tokyo
Patent Number(s):
US 4680712
OSTI ID:
6340801
Country of Publication:
United States
Language:
English

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Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DRAG
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MACHINE PARTS
MAGNETS
MEASURING INSTRUMENTS
MECHANICAL TRANSMISSIONS
SIGNALS
SPEED REGULATORS
SWITCHES
VEHICLES
VELOCIMETERS
VELOCITY