Fuel consumption signalling device for a motor vehicle

Details Fuel consumption signalling device for a motor vehicle Fuel consumption signalling device for a motor vehicle

1983-09-30

1985-10-01

Rowland, James L.

Communications: electrical

Selective

Having indication or alarm

73114, 364442, B60Q 100

Patent

active

045449090

ABSTRACT:
A signalling device for providing indications of the fuel consumption of an internal combustion engine of a motor vehicle comprises first and second sensor means which provide electrical signals indicative of the rate of rotation of the engine and the speed of the motor vehicle, respectively. The first sensor means are connected to a first processing circuit which provides an information signal proportional to the rate of rotation of the engine. A second processing circuit connected to the second sensor means provides a second information signal which is directly proportional to the speed of the vehicle when this speed is less than a predetermined value and which is zero when the speed is greater than the predetermined value. A first adding circuit is connected to the processing circuits and provides a sum signal corresponding to the sum of the first and second information signals. The amplitude of this first sum signal is indicative of the fuel consumption. Comparison circuit means compare the amplitude of the first sum signal with a plurality of ranges of predetermined values and provide the signalling means with control signals indicative of the range of values in which the instantaneous value of the amplitude of the first sum signal falls.

REFERENCES:
patent: 3983533 (1976-09-01), Goszyk et al.
patent: 4384479 (1983-05-01), Handtmann
patent: 4419654 (1983-12-01), Funk
patent: 4444047 (1984-04-01), Kern
patent: 4492112 (1985-01-01), Igarashi et al.

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