Control of a vehicle automatic transmission

Patent · Tue Jun 02 00:00:00 EDT 1987

OSTI ID:6422924

Matsuoka, T; Kikuchi, T

This patent describes an automatic transmission for motor vehicles which comprises a torque converter having an input member adapted to be connected with an engine and an output member. A transmission gear mechanism has gear trains of different gear ratios. The transmission gear mechanism includes an input member connected with the output member of the torque converter. Hydraulic actuator means select one of the gear trains in the transmission gear mechanism. Electromagnetic means control a supply of hydraulic fluid to the hydraulic actuator means. Sensing means detect vehicle operating conditions and produce an operating condition signal. Control means provide with mode selecting manual switch means for selecting one of operating modes having the same number greater than three of gear stages provided by selecting the gear trains and producing a mode signal depending on an actuated position of the switch means.

• Assignee: Mazda Motor Corp., Hiroshima
• Patent Number(s): US 4669335
• OSTI ID: 6422924
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENGINES
EQUIPMENT
GEARS
HYDRAULIC CONTROL DEVICES
MACHINE PARTS
MAGNETS
MECHANICAL TRANSMISSIONS
SIGNALS
SWITCHES
TORQUE
VEHICLES