EGR valve with throttle valve

Abstract

The invention discloses an EGR valve with a throttle valve, comprising an EGR valve body, wherein the lower part of the EGR valve body is provided with a valve chamber, a valve body is arranged outside the valve chamber, an exhaust gas inlet passage is arranged in the valve body, the upper part of the valve body is provided with a valve core, and one side of the valve body is provided with a throttle valve device; and the throttle valve device comprises a gas inlet, a mixed gas outlet at the side opposite to the gas inlet, a throttle valve body, a valve plate arranged in the throttle valve body and a drive shaft connected with the valve plate, a drive valve component connected with the drive shaft is also arranged outside the throttle valve body, an air connection pipe orifice is designed on the EGR valve body, the valve plate playing the role of throttling is installed in a cavity of the valve body, a structure designed at the side of the valve body is connected with a bracket of the drive valve so as to drive a shaft of the EGR valve and the valve plate to rotate, and the EGR valve is integrated with the throttle valve, thereby achieving the purposes of compact structure, reasonable layout and low cost.

Description

technical field [0001] The invention relates to a combination device of an EGR valve and a throttle valve in an engine tail gas exhaust gas recirculation system (EGR system), and belongs to the technical field of engine tail gas emission control devices. Background technique [0002] The EGR valve plays the role of regulating and controlling the recirculated exhaust gas flow in the engine exhaust gas recirculation system (EGR system). The main function of the EGR valve is to change the magnitude of the magnetic field force by changing the current of the coil of the vacuum electromagnetic regulator that controls the vacuum degree of EGR to achieve different vacuum degrees, so as to promote the opening and closing of the EGR valve inlet port, thereby adjusting the flow of exhaust gas after mixing with air. Return to cylinder for recirculation for NO reduction X emissions. [0003] The throttle valve controls the amount of intake air according to the load of the engine. The ...

AI Technical Summary

Problems solved by technology

[0004] The EGR valve and the throttle used in the current automobile engine are two independent bodies to realize their respective functions. Due to the limited volume on the engine, the separate settings of the EGR valve and the throttle hinder the structural optimization of the engine part.

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