Internal combustion engine
AssigneeJCB Research
InventorsKevin Browne, Paul McCarthy
Life of this patent
Estimating the term…
Abstract
An internal combustion engine for use with hydrogen fuel, the engine having at least one cylinder assembly which includes a combustion chamber having a cylinder, a cylinder head and a reciprocating piston assembly, the cylinder defining a cylinder longitudinal axis; a fuel injector for injecting fuel into the combustion chamber, the fuel injector defining an injector longitudinal axis; and a fuel flow director, wherein the fuel flow director is located in the fuel flow path between an outlet of the fuel injector and the combustion chamber. The fuel injector is oriented such that the injector longitudinal axis extends at a first angle; and the fuel flow director is configured to direct fuel flow into the combustion chamber at a second angle, different to the first angle.
Claims19
An internal combustion engine for use with hydrogen fuel, the engine having at least one cylinder assembly, the or each cylinder assembly comprising:
- a combustion chamber comprising a cylinder, a cylinder head and a reciprocating piston assembly, the cylinder defining a cylinder longitudinal axis;
- a fuel injector for injecting fuel into the combustion chamber, the fuel injector defining an injector longitudinal axis;
- and
- a fuel flow director, wherein the fuel flow director is located in a fuel flow path between an outlet of the fuel injector and the combustion chamber;
- wherein the fuel injector is oriented such that the injector longitudinal axis extends at a first angle;
- and
- wherein the fuel flow director is configured to direct fuel flow into the combustion chamber at a second angle, different than the first angle;
- and
- further including a chamber disposed between the outlet of the fuel injector and an outlet aperture of the fuel flow director through which fuel leaves the chamber;
- and further wherein the chamber has a volume and the outlet aperture of the fuel flow director has a cross-sectional area, and wherein a ratio of the volume of the chamber to the cross-sectional area of the outlet aperture area is in a range of 16:1 to 21:1.
An internal combustion engine for use with hydrogen fuel, the engine having at least one cylinder assembly, the or each cylinder assembly comprising:
- a combustion chamber comprising a cylinder, a cylinder head and a reciprocating piston assembly, the cylinder defining a cylinder longitudinal axis;
- a fuel injector for injecting fuel into the combustion chamber, the fuel injector defining an injector longitudinal axis;
- wherein the fuel injector is oriented such that the injector longitudinal axis extends at a first angle;
- and
- a fuel flow director, wherein the fuel flow director is located in the fuel flow path between an outlet of the fuel injector and the combustion chamber;
- wherein the cylinder assembly further comprises a sleeve surrounding the fuel injector, and wherein the sleeve comprises the fuel flow director;
- wherein the sleeve has a first end that extends over the fuel injector, and a second end that extends beyond an outlet of the fuel injector, wherein the second end of the sleeve comprises the fuel flow director;
- wherein the second end of the sleeve defines a chamber between the fuel injector outlet and the fuel flow director, and an outlet aperture by which fuel leaves the chamber;
- and
- wherein a ratio of the chamber volume to a cross-sectional area of the outlet aperture is in the range of 16:1 to 21:1.
An internal combustion engine for use with hydrogen fuel, the engine having at least one cylinder assembly, the or each cylinder assembly comprising:
- a combustion chamber comprising a cylinder, a cylinder head and a reciprocating piston assembly, the cylinder defining a cylinder longitudinal axis;
- a fuel injector for injecting fuel into the combustion chamber, the fuel injector defining an injector longitudinal axis;
- and
- a fuel flow director, wherein the fuel flow director is located in the fuel flow path between an outlet of the fuel injector and the combustion chamber;
- wherein the fuel flow director is integral to the cylinder head;
- wherein the cylinder head defines a chamber between the fuel injector outlet and the fuel flow director, and an outlet aperture by which fuel leaves the chamber;
- and
- wherein the ratio of the chamber volume to the cross-sectional area of the outlet aperture is in the range of 16:1 to 21:1.
Dependencies are inferred from the claim text.