Fuel control apparatus

Claim 1

A fuel control apparatus which comprises: a first means for supplying a fuel to an internal combustion engine depending on the operation of a fuel control valve, a hot-wire type intake air quantity sensor disposed in an air intake passage for the internal combustion engine to detect the quantity of air passing therethrough, and a second means for calculating the quantity of the fuel required to operate the combustion engine based on an output of said hot-wire type intake air quantity sensor and controlling the first means based on a calculated value so that an optimum quantity of the fuel is supplied to said combustion engine by controlling said fuel control valve, said second means comprising a memory which gives a setting condition when said combustion engine is operated under a given condition for a given time after a predetermined time has passed from the starting of the combustion engine, and said combustion engine is warmed up to reach a predetermined temperature, wherein a hot wire is heated at a temperature higher than a temperature in the normal operation of said engine when said memory is in the set condition after said combustion engine has been stopped to thereby burn-off a deposit on said hot wire.