Gas delivery system
AssigneeTranscom Gas Technologies Pty Ltd.
InventorBarry R. Neumann
Life of this patent
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Abstract
A gas delivery system for gas fuelled internal combustion engines, comprising a gas fuel delivery means for delivering a controlled amount of gaseous fuel to a region adjacent a source of ignition. The gas fuel delivery means comprises first and second delivery means for delivering gaseous fuel to a pre-combustion zone and a combustion zone respectively. Gas control means control the relative proportions of gaseous fuel delivered by the first and second delivery means respectively so that combustion in the combustion zone can be achieved with minimum gaseous fuel by initiating ignition of gaseous fuel in the pre-combustion zone. Thus, the fuel/air ratio within the combustion zone can be minimized (lean burn regime) without the onset of engine misfire.
Claims9
A gas delivery system for a gas fuelled internal combustion engine, the system comprising:
- gas fuel delivery means for delivering a controlled amount of gaseous fuel to a region adjacent a source of ignition, said region comprising a pre-combustion zone located in a separate pre-combustion chamber which is located in immediate proximity to said ignition source and which is in direct communication through an orifice with a combustion zone located in a cylinder of the engine, said gas fuel delivery means comprising:
- a single gas injector which is common to said pre-combustion zone and said combustion zone for said cylinder of the engine;
- a first gas delivery line for delivering a controlled amount of gaseous fuel to said pre-combustion zone and a second gas delivery line for delivering a controlled amount of gaseous fuel to said combustion zone, both from said single gas injector common to said pre-combustion zone and said combustion zone for said cylinder, and
- gas control means for controlling the relative proportions of gaseous fuel delivered by said first gas delivery line and said second gas delivery line from said single gas injector common to said pre-combustion zone and said combustion zone for said cylinder,
- whereby, in use, combustion in said combustion zone can be achieved with minimum gaseous fuel by initiating ignition of gaseous fuel in said pre-combustion zone.
Dependencies are inferred from the claim text.