Gas supply and ignition for gas engines

Abstract

A combustion chamber injection nozzle (12) having a plurality of injection channels (37) for a main fuel gas, a pre-combustion chamber, and a plurality of torch channels (52) for hot combustion gas connected to the pre-combustion chamber (15), the injection channels (37) and the torch channels (52) communicating with peripheral openings arranged next to one another so as to alternate in a circumferential direction.

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...

AI Technical Summary

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 2,799,255 A 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, with continuous supplementation of the main gas by injection. Since the main chamber design, and because the combustion gases flow in 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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