Motor vehicle fuel-waste indicator

Details Motor vehicle fuel-waste indicator Motor vehicle fuel-waste indicator

1981-02-06

1982-06-01

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340 52D, 340407, 340669, 200 83N, 200 865, G08B 2100

Patent

active

043330703

ABSTRACT:
A method and electro-mechanical device, for use on motor vehicles, which signals the driver to ease up on the gas pedal whenever he is applying excessive pedal pressure which causes fuel waste. The device utilizes a vacuum-operated electric switch that detects any drop in engine intake-manifold-vacuum below a pre-selected level, caused by excess foot-pressure on the gas pedal, and applies voltage to an electric vibrator which is coupled to the gas pedal. On feeling the gas pedal vibrating, the driver reduces his pedal pressure sufficiently to allow engine vacuum to rise above the pre-selected level, thereby causing the vacuum-switch to cut off electric current to the pedal vibrator. This cessation of vibration serves as a feed-back signal to the driver that his pedal pressure, and hence vehicle performance, is restored to an economical level.

REFERENCES:
patent: 2128250 (1938-08-01), Howard et al.
patent: 3911393 (1975-10-01), Biggs

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