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EGR (Exhaust Gas Recirculation) gas mixer

A gas mixer and shell technology, applied in the field of EGR gas mixer, can solve the problems of affecting the NVH performance of automobiles, difficult engine layout, no compressor noise reduction, etc., to improve the mixing uniformity and mixing efficiency, and the structure is simple. Small, highly usable effect

Inactive Publication Date: 2011-11-02
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional EGR gas mixer relies on a large volume or a long mixing distance to achieve the purpose of EGR gas mixing, which makes the engine layout difficult, not compact, and has no noise reduction function for the compressor, which affects the NVH performance of the car

Method used

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  • EGR (Exhaust Gas Recirculation) gas mixer
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  • EGR (Exhaust Gas Recirculation) gas mixer

Examples

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Embodiment 1

[0019] Such as figure 1 , 2 , 3, the EGR gas mixer of the present embodiment comprises a hollow housing 1 of T-shaped structure, and the housing 1 is provided with an air inlet 2, an exhaust gas inlet 3 and an air outlet 4 communicating with its inner cavity, The air inlet of the casing shell is provided with a blade 5 with a rotation direction connected with a power source and driven by the power source, and the rotation direction of the blade 5 is the same as that of the compressor impeller.

[0020] The air inlet 2 is provided with a flange 6, which is connected with the intake pipeline; the exhaust gas intake 3 is provided with a flange 7, which is connected with the EGR pipeline; the air outlet 4 is provided with a flange 8, which is assembled on the compressor housing.

[0021] The directions of the air inlet 2 and the exhaust gas inlet 3 are vertical and adjacent, which is conducive to improving the mixing uniformity and mixing efficiency of exhaust gas and fresh air. ...

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Abstract

The invention provides an EGR (Exhaust Gas Recirculation) gas mixer which can realize the purpose of evenly mixing EGR in a pipeline with shorter distance and smaller volume, and has certain denoising action on noise caused by the uneven air admission of a gas compressor. The EGR gas mixer comprises a hollow shell, wherein the shell is provided with an air inlet, a waste gas inlet and an air outlet which are communicated with the inner cavity of the shell; and the shell is also provided with a handedness vane which is connected with a power source and rotates under the driving of the power source. When the engine works, fresh air is sucked into the shell via the air inlet and rotates under the prerotation action force or the vane flow guidance to be changed into rotary airflow; and when the EGR waste gas is introduced in via the waste gas inlet, the EGR waste gas rotates under the action force of the rotary airflow so as to be evenly mixed with the fresh air. Because the gas compressor rotates to the same direction of turning of the air compressor vane during air inlet, airflow separation on the air compressor vane is weakened so as to improve the air compressor surge zone of a turbosupercharger, thereby lowering noise.

Description

technical field [0001] The invention belongs to the technical field of automobile engine manufacture, and in particular relates to an EGR gas mixer used in an internal combustion engine with an exhaust gas recirculation device (EGR). Background technique [0002] Exhaust Gas Recirculation (Exhaust Gas Recirculation) is a technology that separates part of the exhaust gas after combustion in a small internal combustion engine for automobiles, and introduces it into the intake side for recombustion, which can reduce nitrogen oxides (NOx) and Increase fuel consumption rate. However, the use of remote EGR technology will cause the intake air temperature of the turbocharger compressor to rise and the intake air distribution will be uneven, which will affect the life of the turbocharger compressor impeller, and may also cause the airflow separation of the compressor impeller to generate noise. Therefore it is necessary to set the EGR gas mixer before the compressor. [0003] The ...

Claims

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Application Information

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IPC IPC(8): F02M25/07F02M26/19
CPCY02T10/121Y02T10/12
Inventor 王钦庆
Owner CHERY AUTOMOBILE CO LTD
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