Manufacturing method for gas discharging pipe assembly of automobile tail gas discharging silencer
A technology of automobile exhaust and manufacturing method, which is applied in the direction of mufflers, exhaust devices, engine components, etc., can solve the problems of noise pollution, muffler muffler effect is not good enough, noise and other problems, to achieve the elimination of emissions, improve the muffler effect, noise reduction effect
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Embodiment 1
[0027] see figure 1 with figure 2 , the present invention provides an automobile exhaust exhaust muffler, comprising: a housing 1, a partition 2, an air intake pipe 3, an air outlet pipe 4, and a connecting pipe 5;
[0028] The number of the partitions 2 is four, and the four partitions are arranged at intervals along the axial direction of the housing 1, and the housing 1 is divided into a first chamber 7 and a second chamber arranged in sequence from front to back. The second chamber 8, the third chamber 9, the fourth chamber 10, the fifth chamber 11, the air inlet pipe 3 is inserted from the front end of the housing 1 and passes through the first chamber 7, the second chamber 8. The third chamber 9 extends into the fourth chamber 10, one end of the connecting pipe 5 is located in the first chamber 7 and the other end extends through the second chamber 8 into the third chamber 9, so The air outlet pipe 4 is inserted into the first chamber 7 from the side wall of the first...
Embodiment 2
[0034] A method for manufacturing an outlet pipe assembly of an automobile exhaust exhaust muffler, the steps are as follows:
[0035] ①, structure and molding
[0036] The air outlet pipe assembly includes two air outlet branch pipes arranged in parallel at intervals, and each air outlet branch pipe includes a horizontal part inserted into the first chamber, an inclined part adjacent to one end of the horizontal part outside the first chamber, and a Catalyst on the horizontal part;
[0037] The outlet branch pipe is made of carbon steel, and the horizontal part and the inclined part are integrally formed; the catalytic converter is prepared according to the existing technology;
[0038] ②, pretreatment
[0039] Soak the outlet branch pipe in the pretreatment solution for at least 5 hours, rinse it with clean water after soaking, and then dry it in an oven at 55°C for 1 hour;
[0040] The components of the pretreatment liquid are: 25 parts of butyl acrylate, 12 parts of but...
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