Shock wave combustion-supporting pre-combustion chamber structure of gas engine

A technology of gas engine and pre-combustion chamber, which is applied in the direction of combustion engine, machine/engine, internal combustion piston engine, etc. It can solve the problems of poor gas and air premixing effect, power drop, and slow combustion speed of the mixture, so as to improve ignition The effect of stability and overall thermal efficiency

Inactive Publication Date: 2021-01-12
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0003] In the current pre-chamber lean-burn gas engine, the premixing effect of gas and air is relatively poor, which hinders the smooth ignition in the pre-chamber of the gas engine
At the same time, there is also the slow combustion speed of the mixture in the pre-combustion chamber, resulting in a decrease in power and low overall thermal efficiency.

Method used

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  • Shock wave combustion-supporting pre-combustion chamber structure of gas engine
  • Shock wave combustion-supporting pre-combustion chamber structure of gas engine

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present specification shall have ordinary meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in one or more embodiments of the present specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "con...

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Abstract

The invention aims to provide a shock wave combustion-supporting pre-combustion chamber structure of a gas engine and belongs to the technical field of engines. The shock wave combustion-supporting pre-combustion chamber structure comprises a gas injection valve, a gas injection valve mounting seat, a pre-combustion chamber and a spark plug. The gas injection valve is mounted on the gas injectionvalve mounting seat through a gas valve pressing plate; a fuel gas inlet is formed in the gas injection mounting seat; one end of the pre-combustion chamber is connected with an outlet of the gas injection valve, a pre-combustion chamber spray hole outlet is formed in the other end of the pre-combustion chamber, and the diameter of the middle of the pre-combustion chamber is smaller than that of the two ends of the pre-combustion chamber; the spark plug is installed in the middle of the pre-combustion chamber, and a spark plug lead is led out through a cylinder cover inner through hole. According to the shock wave combustion-supporting pre-combustion chamber structure, multi-stage reflection superposition of gas jet shock waves in the pre-combustion chamber is achieved, mixing of gas and the air is promoted, combustion flames are promoted to be sprayed into a main combustion chamber, and the ignition stability of the gas engine and the heat efficiency of the whole engine are improved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a gas engine shock wave combustion-supporting pre-combustion chamber structure. Background technique [0002] Gas engine has become one of the important development directions of national energy saving and emission reduction. With the continuous development of gas engine technology, the number of gas engines using pre-chamber combustors is increasing. This is because compared with direct injection combustors, Under the condition of the same average effective pressure, the high-pressure gas of the pre-combustion chamber enters the main combustion chamber through the through hole, the through hole has a small cross-section and a strong throttling effect, so that the pressure in the main combustion chamber rises slowly, and the maximum combustion pressure is low. The concentration of pollutants in the product is low, which can effectively reduce mechanical load and combustion noise....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B19/10F02B19/12
CPCF02B19/1004F02B19/108F02B19/12Y02T10/12
Inventor 李越刘冰冰王明雨张少君刘刚
Owner SHANDONG JIAOTONG UNIV
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