Automobile performance measurement and digital display system - uses counters and periodically updates and displays fuel consumption and speed reference signal

摘要

The automobile digital display system is designed to selectively calculate from data representing certain parameters, the instantaneous fuel consumption, average fuel consumption as a function of distance and the vehicle average speed from a reference instant. The calculator data is selectively displayed and automatically brought up to date in a periodic fashion. The system measures from a reference signal instantaneous fuel flow and by means of a counter adds a unit each time a set quantity of fuel has been consumed. The distance travelled is evaluated from the reference signal and a second counter adds a unit for each set distance travelled. Time is evaluated from the reference signal and a third counter adds a unit for each set time interval passed. The system selectively and periodically calculates a first quotient by dividing the total of the first counter by the total of the second counter. A record quotient is selectively and periodically calculated by dividing the total of the second counter by the total of the third counter. The first and second quotients are then displayed.