Patent ID: 6612282
Filing Date: 2003-09-02
Classification: F02B,F02F,Y02T

Abstract:
A direct-injection spark-ignited engine comprising:a combustion chamber formed between a lower surface of a cylinder head and an upper surface of a piston; an intake and an exhaust valve respectively disposed in an intake port and an exhaust port that are respectively disposed on each side of said cylinder head; a spark plug disposed in said cylinder head; and a fuel injector for directly injecting fuel into said combustion chamber, wherein said lower surface of said cylinder head defines a first intake-valve-side slanted surface and a first exhaust-valve-side slanted surface, said upper surface of said piston defines a second intake-valve-side slanted surface corresponding to said first intake-valve-side slanted surface and a second exhaust-valve-side slanted surface corresponding to said first exhaust-valve-side slanted surface, and wherein a bowl is formed in the upper surface of the piston, said bowl extending from said second exhaust-valve-side slanted surface to said second intake-valve-side slanted surface, said bowl having a depth increasing on approach to said second intake-valve-side slanted surface.