Method of controlling transmission for vehicle

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Details

74866, B60K 4118, G06F 1520, F16H 566

Patent

active

049263285

ABSTRACT:
The present invention is directed to a method and apparatus for controlling an automatic transmission. A selector selects a first speed change range or a second speed change range in which the first and second speed change ranges effect speed changes at different points as a function of vehicle operating conditions. A microprocessor having a memory stores predetermined speed change patterns for the first and second speed change ranges and sensors are coupled to the microprocessor for sensing at least two vehicle operating conditions. The microprocessor controls the operation of the transmission in accordance with the vehicle operating conditions and the state of the selector. A selectively operable inhibiting device inhibits the transmission from operating in the maximum speed stage when the transmission is operating in the second speed change range.

REFERENCES:
patent: 4391166 (1983-07-01), Kubo et al.
patent: 4468987 (1984-09-01), Miller
patent: 4523281 (1985-06-01), Noda et al.
patent: 4669335 (1987-06-01), Matsuoka et al.
patent: 4698763 (1987-11-01), Smyth
patent: 4726262 (1988-02-01), Hayakawa et al.
patent: 4733580 (1988-03-01), Kubo et al.
patent: 4777848 (1988-10-01), Taga et al.
1984 Toyota-Camry Owners Manual, pp. 48, 49 of interest.

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