Patent ID: 6575132
Filing Date: 2003-06-10
Classification: F02B,Y02T

Abstract:
A direct injection gasoline engine, comprising:a combustion chamber delimited in each cylinder by a longitudinally movable piston and an inner wall of a cylinder head; an injector having an injection nozzle configured to inject fuel into the combustion chamber in a cone-shaped manner to form an ignitable fuel/air mixture with separately supplied combustion air; and a spark plug having electrodes arranged outside a lateral surface of the cone of fuel injected by the injection nozzle and located in an area of and protruding into a mixture vortex; wherein the injection nozzle is configured to inject fuel in a hollow, cone-shaped free jet substantially unaffected by a combustion chamber boundary; wherein a cone angle of the fuel cone is between 70Â° and 110Â°; and wherein the injector includes an injection nozzle opening to an outside so that fuel vortices are formed substantially independently of the combustion chamber shape, emerge from the lateral surface of the injected fuel and are concentrated in the combustion chamber in a torus shape.