Automatic transmission system for vehicles

Patent · Tue Feb 24 04:00:00 EST 1987

OSTI ID:7082328

Takefuta, H

An automatic transmission system is described for vehicles having a friction clutch coupled to an internal combustion engine, a speed-change-gear type transmission coupled to the clutch, a first actuator for operating the clutch in response to an electric signal, and a second actuator for operating the transmission in response to an electric signal. A means is also included for producing at least one condition data indicative of the condition of operation of the vehicle and a control means responsive to at least the condition data for controlling the operation of the first and second actuators in order to carry out the gear change operation of the transmission. The control means includes: (1) a storing means for storing a first data representing a first gear change map showing gear change characteristics for obtaining economical running and a second data representing a second gear change map showing gear change characteristics for obtaining high-power-output running; (2) a signal generating means which has an operation lever movable along a predetermined gear shift pattern used for manual operation and generates a command signal indicative of the position of the operation lever on the gear shift pattern; and (3) means responsive to the command signal and the condition data for controlling the first and second actuators so as to carry out a gear change operation in one mode among a first control mode in which the transmission is shifted to the gear position corresponding to the position of the operation lever.

• Assignee: Diesel Kiki Co., Ltd.
• Patent Number(s): US 4645045
• OSTI ID: 7082328
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
ACTUATORS
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DATA PROCESSING
ENGINES
EQUIPMENT
FRICTION
GEARS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MEMORY DEVICES
PROCESSING
SIGNALS
SPEED REGULATORS
VEHICLES