Patent ID: 7264181
Filing Date: 2007-09-04
Classification: F02M,Y10S

Abstract:
1. In an internal combustion engine comprising: a fuel injector adapted to inject a fuel spray into a cylinder, wherein an injection hole is provided in said fuel injector to face to an inner portion of said cylinder to inject said fuel spray into said cylinder, ignition means for igniting injected fuel, wherein said ignition means is provided in said inner portion of said cylinder and has an ignition part, and a piston provided in said inner portion of said cylinder which carries out a reciprocating motion; wherein, in a cross-section of said fuel spray, taken perpendicular to a center axis of said injection hole, said fuel spray has a substantially horseshoe-shaped profile, which includes a region having a concentrated spray density located along the horseshoe-shaped profile and a region having a thin spray density forming an open area of the horseshoe-shaped profile; and wherein said fuel injector is installed at a top portion of a cylinder head to direct said thin fuel spray region toward a side of an ignition plug.