Three-way catalyst with flow rectifier

Abstract

The invention relates to a three-way catalyst with a flow rectifier. The three-way catalyst comprises a shell, a catalyst carrier, a liner, an inlet passage and an exhaust passage, wherein the inlet passage is connected with one end of the shell, and the exhaust passage is connected with the other end of the shell. The three-way catalyst also comprises a catalyst flange. The catalyst flange is connected with the inlet passage; the flow rectifier is arranged in the catalyst flange and is located in the air inlet of the inlet passage. The flow rectifier comprises an electromagnetic ring device, an electronic control unit and a plurality of blades, wherein the electromagnetic ring device is coaxial with the catalyst flange; the electronic control unit is connected with the electromagnetic ring device and is used for controlling the electromagnetic ring device to work; the blades are arranged along the circumferential direction of the electromagnetic ring device and are controlled by the electromagnetic ring device to rotate; each blade is connected with the electromagnetic ring device by a connecting rod. According to the three-way catalyst provided by the invention, the blades can be changed within a certain rotation angle range, and are completely matched with all instantaneous conditions of an engine, and therefore, the conversion efficiency and the use ratio of the three-way catalyst are effectively improved, and moreover, maximum effective power is output by the engine.

Description

technical field [0001] The invention relates to a three-way catalytic converter with a flow equalizing device, which belongs to the field of engine emission pollution control. Background technique [0002] The three-way catalytic converter plays a vital role in automobile exhaust emissions. It can effectively promote the secondary reaction of toxic and harmful gases generated during the combustion process, and convert them into non-toxic gases and discharge them into the atmosphere. With the continuous improvement of emission laws and regulations, improving the efficiency and prolonging the service life of the three-way catalytic converter has become the focus of research at this stage. Among them, the internal flow uniformity of the three-way catalytic converter is one of the important indicators to measure the effectiveness of the three-way catalytic converter. . In the existing three-way catalytic converter, due to structural factors, when the exhaust gas flows through t...

AI Technical Summary

Problems solved by technology

However, these structures are fixed and cannot be applied to different engine operating conditions

Under certain working conditions, it will cause a decline in uniformity and a substantial increase in exhaust back pressure, affecting engine power

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