Fuel supply system for a rotary piston engine

A rotary piston engine comprising a casing composed of a rotor housing having a trochoidal inner peripheral surface and side housings which close opposite ends of said rotor housing, a polygonal rotor adapted to rotate eccentrically in said casing with apex portions thereof sliding over said trochoidal surface thereby defining a plurality of combustion chambers between said trochoidal surface and the individual flanks of said polygonal rotor, an intake port which opens in the inner wall of said casing, an intake manifold connected to said intake port for supplying air therethrough, a fuel injection means for injecting fuel into said intake manifold, means for detecting the intake air flow rate and for dispatching a first signal showing the intake air flow rate, means for detecting the rotation of said rotor and for dispatching a second signal showing the rotational timing of said rotor, a computer which operates, depending upon said first and second signals, to produce a series of fuel injection signals for actuating said fuel injection means in a manner such that the duration and timing of the fuel injection are determined by said first and second signals, respectively, and that the duration is further modified to be relatively long or short with respect to individual fuel injections according to a predetermined order so as to selectively produce a relatively rich fuel-air mixture of about 11-12 air/fuel ratio or a relatively lean fuel-air mixture of about 18-19 air/fuel ratio.