Diesel engines modified to be fueled with gaseous fuels experience problems with knocking and pre-ignition, limiting the compression ratio and efficiency of the engine. A new combustion chamber for a gaseous fueled internal combustion engine, in which the combustion chamber is defined by a cylinder head, a bore in a cylinder block and a piston reciprocating in the bore, comprises a piston portion of the combustion chamber defined by a recessed shape in a piston crown; and a head portion of the combustion chamber defined by a recessed surface in the cylinder head. A ratio between the piston portion of combustion chamber volume and the head portion of combustion chamber volume is in a range of 0.7 to 1.3.

Provided is a high pressure fuel pump that smoothly achieves fuel supply while running and quickly relieves vapor generated during a restart by a piston operation of a high pressure fuel pump to improve a startup delay phenomenon, and an LPDI system including the same.

Provided is a high pressure fuel pump that smoothly achieves fuel supply while running and quickly relieves vapor generated during a restart by a piston operation of a high pressure fuel pump to improve a startup delay phenomenon, and an LPDI system including the same.

The present invention relates to a method and apparatus for operating an engine having a cylinder and a piston reciprocable therein on compressed gas. The apparatus comprises a source of compressed gas connected to a distributor which distributes the compressed gas to the cylinder. A valve is provided to selectively admit compressed gas to the cylinder when the piston is in an approximately top dead center position. Compressed gas is provided by a compressor comprising a axial compressor, a deflector blade which is located downstream of the axial compressor, a radial compressor which is located downstream of the deflector blade and a housing with a which encloses the axial compressor, deflector blade, and radial compressor.

The present invention relates to a method and apparatus for operating an engine having a cylinder and a piston reciprocable therein on compressed gas. The apparatus comprises a source of compressed gas connected to a distributor which distributes the compressed gas to the cylinder. A valve is provided to selectively admit compressed gas to the cylinder when the piston is in an approximately top dead center position. Compressed gas is provided by a compressor comprising a axial compressor, a deflector blade which is located downstream of the axial compressor, a radial compressor which is located downstream of the deflector blade and a housing with a which encloses the axial compressor, deflector blade, and radial compressor.

A hydrogen intake assembly for a hydrogen internal combustion engine characterized in that the hydrogen intake assembly includes at least one air intake manifold comprising an air intake pipe comprising at least one air inlet and air outlets, air intake runners comprising air inlets and air outlets, a spacer having a wall defining an inner chamber receiving a mixture of air, water and hydrogen and comprising air inlets and mixture outlets delivering said mixture, a water rail comprising at least one water inlet and water outlets, said water outlets being embedded in the wall of the spacer and a hydrogen rail comprising at least a hydrogen inlet and hydrogen outlets.

A hydrogen intake assembly for a hydrogen internal combustion engine characterized in that the hydrogen intake assembly includes at least one air intake manifold comprising an air intake pipe comprising at least one air inlet and air outlets, air intake runners comprising air inlets and air outlets, a spacer having a wall defining an inner chamber receiving a mixture of air, water and hydrogen and comprising air inlets and mixture outlets delivering said mixture, a water rail comprising at least one water inlet and water outlets, said water outlets being embedded in the wall of the spacer and a hydrogen rail comprising at least a hydrogen inlet and hydrogen outlets.

A movable electrical generation system includes a generator operable to produce a supply of electrical energy, a prime mover operable to drive the generator, a first fuel, a second fuel different from the first fuel, and a fuel selector valve assembly operable to selectively deliver the first fuel and the second fuel to the prime mover, wherein in response to a transition from delivery of the first fuel to the prime mover to delivery of the second fuel to the prime mover, both the first and second fuels are delivered to the prime mover before cessation of delivery of the first fuel.

A movable electrical generation system includes a generator operable to produce a supply of electrical energy, a prime mover operable to drive the generator, a first fuel, a second fuel different from the first fuel, and a fuel selector valve assembly operable to selectively deliver the first fuel and the second fuel to the prime mover, wherein in response to a transition from delivery of the first fuel to the prime mover to delivery of the second fuel to the prime mover, both the first and second fuels are delivered to the prime mover before cessation of delivery of the first fuel.

The present invention relates to a method and apparatus for operating an engine having a cylinder and a piston reciprocable therein on compressed gas. The apparatus comprises a source of compressed gas connected to a distributor which distributes the compressed gas to the cylinder. A valve is provided to selectively admit compressed gas to the cylinder when the piston is in an approximately top dead center position. Compressed gas is provided by a compressor comprising a axial compressor, a deflector blade which is located downstream of the axial compressor, a radial compressor which is located downstream of the deflector blade and a housing with a which encloses the axial compressor, deflector blade, and radial compressor.