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Fuel gas injecting and mixing device applied to multi-point injection fuel gas engine

A gas engine, injection mixing technology, applied in combustion engines, internal combustion piston engines, engine components, etc., can solve problems such as uneven fuel mixing and leakage, improve performance and life, improve safety, and solve uneven fuel mixing. and the effect of leakage

Active Publication Date: 2014-10-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above problems, and proposes a gas engine injection mixing system with multi-point injection in the intake manifold. Realize the purpose of sweeping away the residual gas in the annular mixing chamber, and can solve the problems of uneven fuel mixing and leakage

Method used

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  • Fuel gas injecting and mixing device applied to multi-point injection fuel gas engine
  • Fuel gas injecting and mixing device applied to multi-point injection fuel gas engine
  • Fuel gas injecting and mixing device applied to multi-point injection fuel gas engine

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0024] As shown in Fig. 1 (a)-(c), the gas injection mixing device comprises: gas injection valve 6, its function is according to the operating condition of engine, the injection pressure gas of timing and quantity, and ring groove-porous gas mixer 4 , its function is to realize the uniform mixing of gas and air through the primary mixing method of the annular primary mixing chamber 7 and the secondary mixing method of the small nozzle hole 9, so as to prevent the formation of a local area of ​​excessive heat load inside the combustion chamber due to uneven gas mixing, so as to improve the performance of the engine. The performance and service life of the fuel tank are improved, and by controlling the injection time, the air at the end of the air intake can sweep away the gas in the annular mixing chamber, so as to prevent the gas from escaping into the intake...

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Abstract

The invention discloses a fuel gas injecting and mixing device applied to a multi-point injection fuel gas engine. The fuel gas injecting and mixing device comprises an annular groove-multi-hole fuel gas mixer, a connecting tube and a fuel gas injection valve, wherein the annular groove-multi-hole fuel gas mixer is matched with one end of the connecting tube, the other end of the connecting tube is matched with the fuel gas injection valve, the annular groove-multi-hole fuel gas mixer is communicated with the fuel gas injection valve through the connecting tube, and fuel gas entering the fuel gas injection valve enters the annular groove-multi-hole fuel gas mixer through the connecting tube. The fuel gas injecting and mixing device has the advantages that fuel gas in an annular mixing cavity is swept by air in the last gas inlet stage by controlling the injection moment, the fuel gas is prevented from escaping to a gas inlet tube, the flue gas remaining in the annular mixing cavity is swept, safety performance can be improved, and the problem that fuel is not evenly mixed and leaks is solved.

Description

technical field [0001] The invention relates to gas engine manufacturing technology and engine modification technology for changing various diesel engines to natural gas fuel, in particular to a gas injection mixing device applied to an intake manifold multi-point injection gas engine. Background technique [0002] As a clean energy, gas has the advantages of wide sources and low price, and is an ideal alternative fuel for internal combustion engines. In order to alleviate the contradiction between the shortage of petroleum resources and the demand in our country, and realize the long-term sustainable economic development and environmental protection of our country, it is necessary to develop gas engines to partially replace petroleum-based fuels. [0003] At present, most of the gas engines manufactured in my country and gas engines modified from diesel engines use the fuel supply method of single-point mixing in the intake manifold. When the power drops, there will be prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/04
CPCY02T10/30
Inventor 张强李娜史振盛于华马相明许自顺
Owner SHANDONG UNIV
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