System for controlling the clutch torque of an electromagnetic clutch for vehicles

Patent · Tue Apr 28 04:00:00 EDT 1987

OSTI ID:6455610

Sakakiyama, R

A system is described for controlling clutch torque for an electromagnetic clutch for a vehicle having an accelerator pedal for accelerating an engine to drive the vehicle, comprising: accelerator switch means for producing a first signal of one logic level when the accelerator pedal is released and for producing a second signal of another logic level when the accelerator pedal is depressed; switching means for controlling clutch current passing through a coil of the electromagnetic clutch so as to control clutch torque thereof; first means responsive to the first signal of the accelerator switch means for producing a first control signal for controlling the switching means so as to decrease the clutch torque to a first low value greater than zero; second means responsive to the second signal for producing a second control signal which controls the switching means so as to decrease the clutch torque to a second low value lower than the first low value, and thereafter to gradually increase the clutch torque to a rated value.

• Assignee: Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP
• Patent Number(s): US 4660699
• OSTI ID: 6455610
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
ACCELERATION
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
MACHINE PARTS
MAGNETS
MECHANICAL TRANSMISSIONS
SIGNALS
SPEED REGULATORS
SWITCHING CIRCUITS
TORQUE
VEHICLES