Shifting timing indicating system for a vehicle

Details Shifting timing indicating system for a vehicle Shifting timing indicating system for a vehicle

1985-07-01

1987-07-28

Crosland, Donnie L.

Communications: electrical

Selective

Having indication or alarm

340520, 340 62, 74DIG7, 434 71, 180282, 36443107, B60Q 100, G08B 904

Patent

active

046834559

ABSTRACT:
A shifting timing indicating system for a vehicle includes a control circuit having an engine rpm sensor for detecting the engine rpm and a rpm comparator which receives the output of the engine rpm sensor and determines whether the engine rpm exceeds a preset value. The control circuit outputs a shift-up signal when the engine rpm exceeds the preset value. A shift-up indicator receives the shift-up signal from the control circuit and makes a shift-up display to direct the operator of the vehicle to shift up. An acceleration detecting circuit detects the rate of increase in engine load and the shift-up indicator is inhibited from making the shift-up display for a predetermined time interval which is extended with increase in the rate of increase in engine load.

REFERENCES:
patent: 4267545 (1981-05-01), Drone et al.
patent: 4438423 (1984-03-01), Stier
patent: 4555691 (1985-11-01), Hosaka et al.

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