Patent ID: 6276338
Filing Date: 2001-08-21
Classification: F02B,F02D,F05C,Y02T

Abstract:
A direct fuel injected, internal combustion engine comprising a cylinder body defining at least one cylinder bore in which a piston reciprocates, a cylinder head affixed to an end of said cylinder body for closing said cylinder bore and defining a combustion chamber together with said piston and said cylinder bore, said cylinder head defining an aperture opened to said combustion chamber, a fuel injector placed within said aperture and arranged to directly spray fuel into said combustion chamber, said fuel injector including a main body and a nozzle extending from said main body toward said combustion chamber, said nozzle having an outer diameter smaller than an outer diameter of said main body, said aperture including a main body holding section and a nozzle holding section, said main body holding section having an inner diameter larger than the outer diameter of said main body so as to define a buffer space between an outer surface of said main body and an inner surface of said main body holding section, said main body holding section and said nozzle holding section together defining a step therebetween, and a heat insulator disposed at said step, said main body being seated on said step via said heat insulator in positioning said nozzle within said nozzle holding section and in forming said buffer space.