Patent ID: 6301958
Filing Date: 2001-10-16
Classification: G01F

Abstract:
A process for determining at least one of fuel consumption and operating status of combustion engines having a fuel injection pump, a supply line connecting a fuel supply container and the fuel injection pump, and a return line connecting the fuel injection pump and the fuel supply container, said process comprising the steps of:providing a measuring device in the supply line and a measuring device in the return line for recording a flowing fuel volume in the supply line and in the return line, the measuring device in the supply line and the measuring device in the return line each having a signal emitter or sensor sending signals that are allocated respectively to the measuring device in the supply line and to the measuring device in the return line, the measuring device in the return line having at least two signal emitters or sensors;emitting signals from the measuring device in the return line that are a function of respective forward and reverse flow directions;supplying the signals obtained from the forward and reverse flow directions to a signal selector;adding the signals from respective equivalent flow directions;subtracting the signals obtained from one flow direction from the signals obtained from another flow direction to form a signal difference; andusing the signal difference thus obtained for fuel consumption counting or display.