Control system for automatic transmission

Details Control system for automatic transmission Control system for automatic transmission

1993-07-09

1995-12-12

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477121, 477148, F16H 6106

Patent

active

054745080

ABSTRACT:
A control system for an automatic transmission includes a shift gear mechanism for shifting respective shift gear stages, a shift line map including upshift lines and downshift lines, and a device for detecting a shift timing at which an shift operation should be carried out based on an engine load on the shift line map and a possibility is estimated that a driving condition will return back to the previous shift gear stage. The system also includes an engine load detecting device for detecting a stable condition of the engine load, and a controller for controlling the shift gear mechanism based on the shift line map after the engine load detecting device detects the stable condition of the engine load at the shift timing detected by the shift timing detecting device.

REFERENCES:
patent: 4881627 (1989-11-01), Ishii
patent: 4996893 (1991-03-01), Nakamura et al.
patent: 5016495 (1991-05-01), Takizawa
patent: 5054336 (1991-10-01), Takizawa
patent: 5097725 (1992-03-01), Sawa
patent: 5203235 (1993-04-01), Iizuka
Thermodynamics--3rd Edition, Kenneth Wark (pp. 538-539).

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