Combustion gas feeding and ignition device for a gas engine

Abstract

In order to achieve reliable, well-controlled and fast diffusion combustion in an air-intake gas engine, a combustion chamber injection nozzle (12) is proposed over whose periphery is distributed a plurality of torch channels (52) for hot combustion gas, wherein the torch channels are connected to the pre-combustion chamber (15).

Description

technical field [0001] The invention relates to a gas supply and ignition device for a gas engine, which includes a combustion chamber nozzle, a plurality of injection channels for main gas are distributed on the circumference of the combustion chamber nozzle, the injection channels are connected with the connected to the main gas supply line of the main gas, and in addition a pre-chamber is provided in the gas supply and ignition device, into which the ignition fuel supply line leads, several torch channels for the hot combustion gas Distributed on the circumference of the nozzle of the combustion chamber and connected to the pre-chamber. [0002] The gas engine mentioned in the present invention refers to an internal combustion engine with a piston, especially a reciprocating piston, that is, a piston engine. Background technique [0003] The known combustion methods of externally ignited gas engines are all based on the principle that either a combustible mixture is supp...

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Problems solved by technology

[0004] These tried-and-true and largely robust combustion methods have disadvantages: all have a tendency to misfire or pre-ignite at unfavorable fuel-to-air ratios, which can lead to high noxious emissions, poor efficiency and / or extreme mechanical Such misfires or pre-ignitions can threaten the safe and reliable operation of gas engines. Rapid load changes are especially likely to cause the above-mentioned adverse changes in the fuel-air ratio

[0009] The problem with the gas engine described in US 2,799,255A is that the combustion chamber design provided is not conducive to diffusion combustion. Combustion during diffusion combustion takes place in the main combustion chamber at the interface of the main gas flow, the main gas is continuously supplemented by injection. Since The design of the main combustion chamber, and because of the inflow of combustion gases from the pre-chamber, still produces locally restricted combustion

This also leads to a suboptimal utilization of the oxygen available for combustion. Only unreliable, relatively slow and partially incomplete combustion thus takes place, which in turn leads to increased emissions of harmful substances and reduced efficiency.

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