Control device for a direct-coupling hydraulic clutch in a hydraulic torque converter

Patent · Mon Nov 17 23:00:00 EST 1986

OSTI ID:7068592

Nishikawa, M

This patent describes an automotive vehicle having a hydraulic torque converter having an input member, an output member, and a hydraulic direct-coupling clutch arranged between the input and output members and being operable to mechanically engage the input and output members with each other, a control device for the hydraulic direct-coupling clutch. The control device comprises: a selector valve electrically actuatable for controlling the supply of operating fluid to the direct-coupling clutch, the selector valve having a valve body and a pressure chamber defined by one end face of the valve body; a pilot fluid pressure source for generating pilot fluid pressure and supplying same to the pressure chamber to act upon the one end face of the valve body of the selector valve and operable to bias the valve body to a position for supplying the operating fluid to the direct-coupling clutch; a drain line communicating the pressure chamber of the selector valve with a zone under a lower pressure; and an electromagnetic valve arranged across the drain line and adapted to open the drain line when energized, to permit the pilot fluid pressure in the pressure chamber of the selector valve to escape to the zone under a lower pressure.

• Assignee: Honda Giken Kogyo K.K., Tokyo
• Patent Number(s): US 4623053
• OSTI ID: 7068592
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL
CONTROL EQUIPMENT
DRAINAGE
ELECTRONIC CIRCUITS
EQUIPMENT
FLOW REGULATORS
FLUIDS
HYDRAULIC CONTROL DEVICES
HYDRAULIC FLUIDS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
PRESSURE CONTROL
PRESSURE DEPENDENCE
PRESSURE REGULATORS
SIGNALS
TORQUE
VALVES
VEHICLES
VELOCITY
WORKING FLUIDS