Control apparatus for automatic transmission gear system for vehicle

Patent · Tue Dec 27 04:00:00 EST 1988

OSTI ID:6362979

Hiramatsu, T; Tanaka, Y; Nakamura, H

A control apparatus is described for an automatic transmission gear system for vehicle, comprising: an input shaft to which a driving force of an engine is transmitted; selectively engageable first and second engaging elements; a control device having; engaging element switching means for engaging the first engaging element and for disengaging the second engaging element so as to achieve gearshift from a relatively high speed ratio to a relatively low speed ratio; controlling means for controlling engaging forces of the first and second engaging elements during the gearshift; instructing means for generating an instruction signal for starting the gearshift; input shaft rotation speed detecting means for detecting rotation speed of the input shaft; and changing rate detecting means for detecting changing rate of the rotation speed of the input shaft.

• Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4793216
• OSTI ID: 6362979
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
ANGULAR VELOCITY
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OPERATION
VEHICLES
VELOCITY