Internal combustion engines and control
First Claim
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.
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Accused Products
Abstract
Disclosed is 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, 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.
34 Citations
39 Claims
- 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.
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34. Internal combustion engine comprising at least one combustion chamber having an inlet port with an associated inlet valve for inlet of combustion air to said chamber generally along a first axis, an ignition device and at least one fuel delivery means communicating fuel directly to said chamber in a direction generally parallel to said first axis and in the vicinity of said ignition device,
wherein said generally parallel direction of said inlet air and said fuel reduces over-enleanment of fuel in end gas regions of said combustion chamber, and wherein said generally parallel direction is axial to said combustion chamber, wherein said engine is arranged for spray-guided combustion.
- 37. Internal combustion engine comprising at least one combustion chamber with a fuel delivery injector and an ignition means arranged for spray guided injection of fuel 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 whereby low tumble gas motion is produced to achieve quiescence within said combustion chamber such as to reduce over-enleanment of fuel in end gas regions of said spray guided fuel.
Specification