Patent ID: 6854440
Filing Date: 2005-02-15
Classification: F02B,F02F,Y02T

Abstract:
1. An Internal combustion engine comprising at least one cylinder with a reciprocating piston to provide said engine with at least one combustion chamber, said combustion chamber further comprising a delivery injector for injecting fuel directly into said combustion chamber, said engine further comprising at least one valved inlet air duct for delivering combustion air into said combustion chamber, wherein at least said inlet air duct and/or its valve is arranged to provide a low tumble inlet port to said at least one combustion chamber, said combustion chamber, in use, being quiescent through having low in-cylinder tumble gas motion of said combustion air and wherein said low in-cylinder tumble gas motion of said combustion air reduces over-enleanment of fuel in end gas regions of said combustion chamber, wherein said engine is arranged for spray-guided combustion.