Automatic transmission controller for automobiles

Details Automatic transmission controller for automobiles Automatic transmission controller for automobiles

1982-07-21

1985-06-11

Gruber, Felix D.

Boots, shoes, and leggings

74866, 192 0033, 192 354, F16H 566, B60K 4106, B60K 4122, G06F 1520

Patent

active

045232814

ABSTRACT:
An electronic automatic transmission control system for an automobile comprises speed sensor means for detecting the speed of the automobile, load sensor means for detecting engine load, solenoids for controlling the automatic transmission including a lock-up clutch of a torque converter and a computer for receiving signals from the sensor means and for controlling the solenoids, the computer having a memory RAM and ROM for storing shift pattern data representing a plurality of lock-up patterns comprising three sorts of modes, i.e., power mode, economy mode and normal mode, in addition to a plurality of shift patterns comprising three sorts of modes, i.e., power mode, economy mode and normal mode. Any shift pattern and lock-up pattern is selected in one of three sorts of modes from a plurality of the shift patterns and lock-up patterns in accordance with correlation of the running speed and the engine load, and a combined pattern of the shift solenoid and the lock-up solenoid is selected according to the selected shift pattern and lock-up pattern, thereby gear shift and lock-up can be controlled. Safety provisions include dual speed sensors (speedometer) and (transmission output shaft) and fault detecting circuitry to maintain safe operation.

REFERENCES:
patent: 3448640 (1969-06-01), Nelson
patent: 4208925 (1980-06-01), Miller et al.
patent: 4208929 (1980-06-01), Heino et al.
patent: 4253348 (1981-03-01), Will et al.
patent: 4262335 (1981-04-01), Ahlen et al.
patent: 4335428 (1982-06-01), Miki et al.
patent: 4373619 (1983-02-01), Schritt et al.
patent: 4393467 (1983-07-01), Miki et al.
patent: 4393732 (1983-07-01), Suzuki et al.
patent: 4414863 (1983-11-01), Heino

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