Direct-coupling clutch control device for a torque converter in vehicular automatic transmission

Patent · Tue Jan 21 04:00:00 EST 1986

OSTI ID:5901642

Nishikawa, M; Sakurai, Y

This patent describes a direct coupling clutch control device for a torque converter which is utilized in vehicular automatic transmissions. The appartus consists of a number of interactive components operating together to form a functional control device. The first member of the device described in the patent is a fluid-type torque converter equipped with an output element. Coupled to the torque converter is an auxiliary transmission which is capable of selecting any of a number of multi-staged transmission gear ratios. A hydraulic direct-coupling clutch is characterized in the patent as being located between the input and output members and functioning to mechanically couple these components. Closely associated with the clutch is a gear shift control modality which is discussed in detail in the patent in relation to its design function, of selecting any one transmission gear ratio in an automatic or manual fashion with the capacity for switching transmission modes engineered into the device. A direct-coupling clutch modality is depicted in the patent as possessing a variable characteristic by means of which the vehicle speed for commencing the actuation of the clutch is shifted with oil pressure magnitude to the lower speed side in correspondence with an automatic gear shift position of the gear shift control means and to the high speed side in accordance with a manual gear shift position.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4565267
• OSTI ID: 5901642
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
AMPLITUDES
AUTOMATION
AUXILIARY SYSTEMS
CONTROL EQUIPMENT
ENERGY TRANSFER
EQUIPMENT
FABRICATION
FLUIDS
GEARS
HYDRAULIC FLUIDS
JOINING
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MODIFICATIONS
POSITIONING
SURFACE AREA
SURFACE PROPERTIES
TORQUE
VEHICLES
VELOCITY
WORKING FLUIDS