Rotary piston internal combustion engine of trochoidal construction

Claim 1

A rotary piston internal combustion engine of trochoidal construction, comprising inlet channel means, fuel injection means for injecting fuel into the inlet channel means approximately transversely to the flow of the sucked-in combustion air, a first and second throttle valve means disposed in said inlet channel means, said first and second throttle valve means being provided for producing sufficient turbulence within the area of the injected fuel, for achieving a good mixture preparation of the injected fuel under all operating conditions and for substantially preventing a wall wetting of the inlet channel means with fuel, said first and second throttle valve means bEing arranged one on each side of the injection means, wherein the throttle valve means located downstream of the injection means substantially closes the inlet channel means in the idling position, and an idling channel means provided in a wall portion forming the inlet channel means disposed substantially opposite the injection means, the lower half of said last-mentioned throttle valve means being provided with idling bore means for the passage of fuel, whereby the fuel injected from said injection means impinges with its principal portion against the lower half of said last-mentioned throttle valve means in the idling position while the remaining portion of the fuel is injected directly against the wall of the inlet channel means within the area of the inlet opening of said idling channel means.