Slip control mechanism for friction clutch in torque converter of automatic power transmission

Patent · Tue Feb 03 04:00:00 EST 1987

OSTI ID:7048974

Murasugi, T; Niikura, Y

This patent describes a torque converter with a lock-up friction clutch comprising: an input member driven to rotate by a prime mover; an impeller rotating with the input member; a turbine independently rotatable and cooperative with the impeller to form a toroidal circuit by which torque is exerted on the turbine by the impeller in a hydrodynamic drive mode; an output member freely rotatable and coupled to the turbine to rotate therewith at a variable phase; a friction clutch movable into and out of contact with the input member to establish frictional engagement to a variable degree with the input member in a mechanical drive mode; hydraulic means associated with the friction clutch for moving the latter between a first state of enforcing the mechanical drive mode and a second state enforcing the hydrodynamic drive mode. The hydraulic means includes first and second fluid chambers on opposite sides of the friction clutch for moving the friction clutch in accordance with the fluid pressure difference therebetween; and means establishing fluid communication between the first and second fluid chambers.

• Assignee: Nissan Motor Co., Ltd., Kanagawa
• Patent Number(s): US 4640395
• OSTI ID: 7048974
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL EQUIPMENT
EQUIPMENT
FLOW RATE
FLOW REGULATORS
FLUID MECHANICS
FRICTION
HYDRAULIC CONTROL DEVICES
HYDRAULIC TURBINES
HYDRODYNAMICS
MACHINE PARTS
MACHINERY
MECHANICAL TRANSMISSIONS
MECHANICS
MOTION
PRESSURE DEPENDENCE
ROTATION
SLIP
TORQUE
TURBINES
TURBOMACHINERY
VEHICLES