An improved three-way catalytic converter for automobile exhaust gas treatment

Abstract

The invention relates to the technical field of intelligent automobiles, and discloses an improved three-way catalytic converter for automobile exhaust gas treatment, which includes a sandwich jacket, a heat-insulating jacket, a sandwich inner jacket, a liner and a ceramic carrier, and the inner wall of the sandwich jacket is fixedly socketed There is a heat-insulating interlayer, and the inner wall of the heat-insulating interlayer is fixedly sleeved with an interlayer inner sleeve. In the present invention, by installing the return solenoid valve and the exhaust solenoid valve, the temperature sensor device detects the working temperature and controls the opening and closing of the return solenoid valve and the exhaust solenoid valve, so that the exhaust gas that has not been purified in the initial stage of the work is guided by the return pipe to the recovery chamber, and then into the reaction sleeve for re-purification treatment, this cycle until the temperature detected by the temperature sensor device reaches the initial working temperature, the exhaust solenoid valve is turned on, the return solenoid valve is closed, and the traditional three-way catalytic converter is restored The normal working condition solves the problem that the unpurified tail gas is directly discharged to the atmosphere in the initial stage of the exhaust work.

Description

technical field [0001] The invention relates to the technical field of intelligent automobiles, in particular to an improved three-way catalytic converter for automobile tail gas treatment. Background technique [0002] The three-way catalytic converter is the most important external purification device in the automobile exhaust system. It is often installed between the automobile exhaust manifold and the muffler to remove harmful substances in the automobile exhaust, such as CO and NO. X , HC, etc. into N 2 , CO 2 、HO 2 and other harmless substances. [0003] Such as figure 1 As shown, the traditional three-way catalytic converter includes a sandwich jacket (1), a heat insulating jacket (2), a sandwich inner jacket (3), a liner (4) and a ceramic carrier (5), and the outer jacket of the sandwich jacket (1) is covered with a stainless steel shell body, the heat-insulating interlayer (2) is used for thermal insulation, the liner (4) is used for thermal expansion to provid...

AI Technical Summary

Problems solved by technology

[0008] In view of the shortcomings of the existing three-way catalytic converter in the exhaust gas purification treatment process proposed in the background technology, the present invention provides an improved three-way catalytic converter for automobile exhaust gas treatment, which has exhaust gas backflow purification in the initial stage and sufficient oxygen supply to ensure oxidation. The advantage of complete reaction solves the problem that the exhaust gas is directly discharged without purification treatment in the initial stage of the exhaust gas proposed in the background technology

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