Display unit of fuel consumption meter for automobile

Patent · Tue Mar 03 04:00:00 EST 1987

OSTI ID:7085285

Teshima, T; Funaoka, F; Robert, P H

This patent describes a display unit of a fuel consumption meter for an automobile, comprising: a proper fuel consumption operational circuit capable of transmitting output signals indicative of proper fuel consumption according to automobile speed; an actual fuel consumption operational circuit capable of transmitting output signals indicative of actual fuel consumption; a comparing circuit for comparing the amplitudes of the output signals of the proper fuel consumption operational circuit and the actual fuel consumption operational circuit; bar graph decoders receiving the output signals from the proper fuel consumption operational circuit and the actual fuel consumption operation circuit; and EX-OR circuit having an input coupled to a respective bar graph decoder and having an output; an OR circuit having an input coupled to a respective bar graph decoder and having an output; selector means coupled to the output of the EX-OR circuit and the output of the OR circuit and controlled by an output of the comparing circuit for connecting a selective one of the EX-OR and OR circuits to an output of the selector means; and a bar graph display comprising display segments and a driving circuit for activating selected of the segments.

• Assignee: Regie Nationale des Usines Renault, Boulogne-Billancourt
• Patent Number(s): US 4647902
• OSTI ID: 7085285
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320203* -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
AMPLITUDES
AUTOMOBILES
COMPARATOR CIRCUITS
COMPUTER GRAPHICS
DISPLAY DEVICES
ELECTRONIC CIRCUITS
ENERGY CONSUMPTION
FUEL CONSUMPTION
FUEL GAGES
LOGIC CIRCUITS
MEASURING INSTRUMENTS
SIGNALS
VEHICLES
VELOCITY