Exhaust gas recirculation gas inlet device

Abstract

The invention relates to the technical field of vehicle equipment, and discloses an exhaust gas recirculation gas inlet device. The exhaust gas recirculation gas inlet device comprises a separator main body, a liquid container and a valve body, wherein the separator main body comprises a separation inner pipe and a separation outer pipe, the separation outer pipe is provided with an exhaust gas inlet communicating with an exhaust gas recirculation valve, the separation outer pipe is arranged on the separation inner pipe in a sealing and sleeve mode, a fresh gas inlet and a mixed gas outlet are formed in the two ends of the separation inner pipe correspondingly, the mixed gas outlet communicates with an air compressor, a heat exchange rib plate and a separation hole are arranged on the separation inner pipe, the heat exchange rib plate and the separation hole are both formed in the separation outer pipe, the separation outer pipe communicates with the separation inner pipe through the separation hole, a liquid inlet of the liquid container communicates with the separation outer pipe, the liquid container is used for collecting liquid in the separation outer pipe, and the valve body is arranged at the liquid outlet position of the liquid container. By means of the structure, the exhaust gas recirculation gas inlet device can effectively separate water vapor in exhaust gas, the damage risk of the gas compressor is reduced, and the use working condition range of exhaust gas recirculation can be widened.

Description

technical field [0001] The invention relates to the technical field of vehicle equipment, in particular to an exhaust gas recirculation intake device. Background technique [0002] Exhaust gas recirculation means that part of the exhaust gas after the combustion of the internal combustion engine re-enters the combustion chamber. Its main purpose is to reduce the emission of nitrogen oxides and improve the fuel economy of the internal combustion engine at low and medium loads. However, for a gasoline engine that uses air intake supercharging, because it uses a low-pressure exhaust gas recirculation system, after the exhaust gas is mixed with fresh intake air, a large amount of water will be precipitated under certain operating conditions, which will cause damage to the compressor. Damage, so the range of operating conditions suitable for exhaust gas recirculation is small. Contents of the invention [0003] The purpose of the present invention is to provide an exhaust gas ...

AI Technical Summary

Problems solved by technology

However, for a gasoline engine that uses air intake supercharging, because it uses a low-pressure exhaust gas recirculation system, after the exhaust gas is mixed with fresh intake air, a large amount of water will be precipitated under certain operating conditions, which will cause damage to the compressor. Damaged, therefore suitable for use with exhaust gas recirculation in a narrow range of operating conditions

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