Pre-combustion chamber structure of fuel gas engine

Abstract

The invention discloses a pre-combustion chamber structure of a fuel gas engine. The pre-combustion chamber structure of the fuel gas engine comprises a high-voltage guide wire sleeve, a pre-combustion chamber body, a spark plug, a one-way valve and a spray nozzle, wherein the lower end of the pre-combustion chamber body is provided with a pre-combustion chamber upper cavity; a spark plug mountinghole is formed in one side above the pre-combustion chamber upper cavity; a one-way valve mounting hole is formed in the other side above the pre-combustion chamber; the one-way valve mounting hole communicates with the pre-combustion chamber upper cavity through a gas inlet channel; the high-voltage guide wire sleeve is fixedly arranged at the upper end of the pre-combustion chamber body; the upper end of the spray nozzle is provided with a pre-combustion chamber lower cavity; the spray nozzle is arranged at the lower end of the pre-combustion chamber body; the pre-combustion chamber lower cavity and the pre-combustion chamber upper cavity of the pre-combustion chamber body define a pre-combustion chamber cavity; and the lower end of the spray nozzle is provided with a spray channel which communicates with the pre-combustion chamber lower cavity. The pre-combustion chamber structure of the fuel gas engine forms relatively great ignition energy through combustion of a high-concentration natural air mixture to ignite the relatively thin gas mixture in a primary combustion chamber, so that the purpose of improving power and heating efficiency of the whole machine is achieved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a gas engine pre-combustion chamber structure. Background technique [0002] At present, most domestic high-power gas engines adopt the traditional spark plug ignition method, and the ignition energy is low, resulting in the slow burning speed of the mixed gas and the limited concentration of the mixed gas. In the end, the power of the whole machine can only reach 75% to 75% of the prototype diesel engine with the same displacement. 80%, the overall effective thermal efficiency is generally less than 40%, and for high-speed engines or when the combustible gas contains more flame-retardant gases, the overall power and effective thermal efficiency are lower, and the emissions are worse. [0003] The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any for...

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Problems solved by technology

[0002] At present, most domestic high-power gas engines adopt the traditional spark plug ignition method, and the ignition energy is low, resulting in the slow burning speed of the mixed gas and the limited concentration of the mixed gas. In the end, the power of the whole machine can only reach 75% to 75% of the prototype diesel engine with the same displacement. 80%, the overall effective thermal efficiency is generally less than 40%, and for high-speed engines or when the combustible gas contains more flame-retardant gases, the overall power and effective thermal efficiency are lower, and the emissions are worse

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