Automatic transmission system

Patent · Tue Dec 06 04:00:00 EST 1988

OSTI ID:6483266

Kurihara, K; Arai, K

This patent describes an automatic transmission system for a vehicle having a gear-type transmission, a clutch connected to the gear-type transmission and an actuating means responsive to an electric signal for operating the gear-type transmission and the clutch so as to shift the gear-type transmission into a target gear position. The system consists of: means for producing a first signal relating to the vehicle speed; means for producing a second signal relating to the amount of operation of an accelerator pedal; a first means responsive to the second signal for producing a rate signal indicating the rate of the operation of the accelerator pedal per unit time for each depression of the accelerator pedal; a second means responsive to the first signal for producing a maximum acceleration signal indicating the maximum acceleration of the vehicle due to the depression of the accelerator pedal; a third means responsive to the signals from the first and second means for calculating the vehicle load and producing a third signal indicating the calculating vehicle load; and a control means responsive to the first through third signals for producing a control signal for operating the actuating means so as to shift the gear-type transmission into the target gear position determined for the operating condition of the vehicle at that time.

• Assignee: Diesel Kiki Co., Ltd., Tokyo
• Patent Number(s): US 4789936
• OSTI ID: 6483266
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ACTUATORS
AUTOMATION
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DESIGN
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
SIGNALS