Process for displaying oil change information in an internal combustion engine

Claim 1

A process for diplaying engine oil change information for an internal combustion engine equipped with an electronic injection calculator linked by a connecting wire to an onboard computer provided with a display device, said calculator supplying the onboard computer with pulses (I') of period (T) corresponding to the fuel consumption comprising the following steps; calculation, by the electronic calculator, a fixed number N of weighted kilometers corresponding to the actual kilometers traveled by the vehicle and corrected by a coefficient which is a function of certain parameters of engine operation; reduction, by the electronic calculator, of the initial period T of pulses I' by period d at each calculation of N weighted kilometers, to a minimum threshold (T o ) with a pulse period corresponding to (M.N.) weighted kilometers; resetting, by the electronic calculator, the period of pulses (I') to its initial value (T); storage by the onboard computer of (M.N.) weighted kilomters; substraction by the onboard computer of these (M.N.) weighted kilometers from the actual kilometers remaining to be traveled before oil change, stored during the preceding calculation; displaying of the actual kilometers remaining to be traveled before oil change.