Electric auxiliary heating type waste gas recirculation mixer

Abstract

The invention discloses an electric auxiliary heating type waste gas recirculation mixer, and belongs to the technical field of engine waste gas reutilization. The electric auxiliary heating type waste gas recirculation mixer comprises a mixer body. A gas inlet and a gas outlet are formed in the mixer body. A containing cavity formed around a mixing cavity of the mixer body is formed in a shell ofthe mixer body, and an electric heating device arranged around the mixing cavity of the mixer body is arranged on the cavity wall of the containing cavity. The electric auxiliary heating type waste gas recirculation mixer is reasonable in structural design, the heating function is integrated on the mixer, the mixer shell is subjected to electric auxiliary heating through the electric heating device, the phenomenon of freezing in an EGR mixer is avoided, ice in the mixer can be effectively and rapidly removed, the reliability of an EGR system is improved, and the problem of flameout caused byfreezing of the EGR mixer can be solved.

Description

technical field [0001] The invention relates to engine exhaust gas recycling technology, more specifically, it relates to an electrified auxiliary heating exhaust gas recirculation mixer. Background technique [0002] At present, in order to meet the National VI emission regulations, the gas engine adopts the technical route of equivalent combustion. However, due to the high combustion temperature in the cylinder of this technical route, EGR (exhaust gas recirculation) gas must be introduced to reduce the combustion temperature in the cylinder and improve the reliability of the engine. performance. EGR gas is mainly composed of CO2 and H2O, of which H2O mainly exists in gaseous form. However, when EGR gas passes through the EGR system pipeline and mixer, due to the temperature drop, the gaseous water will condense into liquid water and remain in the EGR mixer. In cold regions, the liquid water will freeze and become solid, which will block the EGR mixer, cause poor ventilat...

AI Technical Summary

Problems solved by technology

EGR gas is mainly composed of CO2 and H2O, of which H2O mainly exists in gaseous form. However, when EGR gas passes through the EGR system pipeline and mixer, due to the temperature drop, the gaseous water will condense into liquid water and remain in the EGR mixer. In cold regions, the liquid water will freeze and become solid, which will block the EGR mixer, cause poor ventilation, and cause the engine to fail to start or stall

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