Electronically controlled automatic transmission control system

Patent · Tue Dec 30 00:00:00 EST 1986

OSTI ID:6812287

Miki, N; Sakaguchi, Y; Mandokoro, K; Kubo, S

This patent describes an electronically controlled automatic transmission control system for controlling an automatic transmission for a vehicle comprising: an electronic controller which receives and functions in response to input signals corresponding to the running conditions of the vehicle, such as running speed of the vehicle and degree of throttle opening and; a hydraulic controller including a fluid pressure source, shift control valves for changing over connection of the fluid pressure source to respective hydraulic servomotors of frictional engaging mechanisms which engage, release or fix components of a gear train. The controller also includes solenoid valves adapted to be controlled by the electronic controller to change input signal pressures to the shift control valve and a manual selector valve capable of moving through predetermined set positions, namely, a neutral position (N-position), a drive position (D-position) and a reverse position (R-position). This is adapted to connect the fluid pressure source selectively to the shift valves or the hydraulic servomotors; and adapted to control the automatic transmission according to running of the vehicle including the set position of the manual selector valve. The solenoid valves are a first solenoid valve and a second solenoid valve, the shift control valves being first, second and third shift control valves.

• Assignee: Aisin-Warner K.K., Anjo
• Patent Number(s): US 4631982
• OSTI ID: 6812287
• Resource Relation: Patent File Date: Filed date 18 Nov 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
MECHANICAL TRANSMISSIONS
CONTROL SYSTEMS
VEHICLES
ELECTRIC MOTORS
ELECTRONIC EQUIPMENT
HYDRAULIC CONTROL DEVICES
HYDRAULIC FLUIDS
POSITIONING
PRESSURE CONTROL
PRESSURIZING
SERVOMECHANISMS
SIGNALS
SOLENOIDS
VALVES
VELOCITY
CONTROL
CONTROL EQUIPMENT
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FLUIDS
MACHINE PARTS
MOTORS
WORKING FLUIDS
330602* - Vehicle Design Factors- Engine-Transmission Matching