Fuel gas and EGR (exhaust gas recirculation) integrated mixer

A technology of gas mixer and mixer, which is applied in the direction of exhaust gas recirculation, combustion engine, machine/engine, etc. It can solve the problems of high reliability requirements of electrical sensors, low accuracy of EGR rate, and many electrical sensors, etc., and achieve simple structure , good followability and high control precision

Inactive Publication Date: 2016-03-23
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Gas engines with engine exhaust circulation on the market now mainly adopt the separate design of EGR mixer and gas mixer, and add Venturi mixer, differential pressure sensor, pressure sensor and temperature sensor to measure EGR rate on the pipeline of engine exhaust circulation , this method has the following disadvantages: the EGR mixer and the gas mixer are designed separately, the integration is poor, and gaskets need to be added to the joints of each part, which is easy to cause air leakage; Differential sensors, pressure sensors and temperature sensors are used to measure the EGR rate, but in the process of engine transient operating conditions, the calculation of the EGR rate has low accuracy, and there are many electrical sensors, and the exhaust temperature in the engine exhaust cycle is high, among which It also contains corrosive gas, which requires high reliability of electrical sensors

Method used

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  • Fuel gas and EGR (exhaust gas recirculation) integrated mixer
  • Fuel gas and EGR (exhaust gas recirculation) integrated mixer
  • Fuel gas and EGR (exhaust gas recirculation) integrated mixer

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Embodiment 1

[0021] The specific embodiment of the present invention is as Figures 1 to 3 As shown, a mixer integrating gas and EGR, including an integrated and connected EGR mixer 2 and a gas mixer 4, has a simple structure, is compact and reasonable, occupies a small space, is easy to disassemble and assemble, and has a relatively low manufacturing cost. Low. The left side of the EGR mixer 2 is provided with an integrated mixer inlet 1 for connecting to the engine throttle; the right side of the gas mixer 4 is provided with an integrated mixer outlet 6 for connecting to the engine intake pipe. It has high integration, good transient response, good followability of mixed gas concentration control, and high mixing uniformity of exhaust gas, fresh air and gas.

[0022] The upper part of the EGR mixer 2 is provided with an engine exhaust inlet 3 for connecting with the EGR valve.

[0023] The upper part of the gas mixer 4 is provided with a gas inlet 5 for connecting with a gas injection ...

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PUM

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Abstract

The invention discloses a fuel gas and EGR (exhaust gas recirculation) integrated mixer. The mixer comprises an EGR mixer and a fuel gas mixer which are integrated and communicated with each other, wherein an integration mixer inlet used for being connected with a throttle gate is formed in the EGR mixer; an integration mixer outlet used for being connected with an engine intake duct is formed in the fuel gas mixer. According to the fuel gas and EGR (exhaust gas recirculation) integrated mixer, provided by the invention, the integration level is high, transient state response is good, the gas mixture concentration control following performance is good, the mixing uniformity of exhaust, fresh air and fuel gas is high, the structure is simple and reasonable, the occupied space is small, the disassembly and assembly is convenient, and the manufacturing cost is lower.

Description

technical field [0001] The invention relates to the field of engine gas mixing, in particular to a mixer integrating gas and EGR. Background technique [0002] Gas engines with engine exhaust circulation on the market now mainly adopt the separate design of EGR mixer and gas mixer, and add Venturi mixer, differential pressure sensor, pressure sensor and temperature sensor to measure EGR rate on the pipeline of engine exhaust circulation , this method has the following disadvantages: the EGR mixer and the gas mixer are designed separately, the integration is poor, and gaskets need to be added to the joints of each part, which is easy to cause air leakage; Differential sensors, pressure sensors and temperature sensors are used to measure the EGR rate, but in the process of engine transient operating conditions, the calculation of the EGR rate has low accuracy, and there are many electrical sensors, and the exhaust temperature in the engine exhaust cycle is high, among which I...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F02M26/13F02M26/51F02M26/46F02M26/47F02M21/04
CPCF02M21/04Y02T10/30
Inventor宁德忠刘志治陈欢公旭刘肖毅盛利莫员黄林王家祥朱赞
OwnerGUANGXI YUCHAI MASCH CO LTD