Family car exhaust manifold

Abstract

The invention discloses a family car exhaust manifold which comprises air inlet pipes, a catalytic converter and an air outlet pipe, wherein the number of the air inlet pipes is 4; lower reaches of the air inlet pipes are connected with the catalytic converter; catalyst is arranged inside the catalytic converter; the lower reach of the catalytic converter is connected with the air outlet pipe; the air inlet pipes, the catalytic converter and the air outlet pipe are independent and formed by welding; the catalytic converter comprises an upper cover I, an upper cover II, a lower cover I and a lower cover II; the upper cover I and the upper cover II are subjected to butt welding; and the lower cover I and the lower cover II are subjected to butt welding. In the technical scheme provided by the invention, the air inlet pipes, the catalytic converter and the air outlet pipe are independent, the catalytic converter comprises the upper cover I, the upper cover II, the lower cover I and the lower cover II, the upper cover I and the upper cover II are subjected to butt welding, and the lower cover I and the lower cover II are subjected to butt welding, therefore, the part structure is simpler and is easier to process, and required processing apparatuses are simple.

Description

technical field [0001] The invention relates to an automobile exhaust manifold, in particular to an exhaust manifold of a family car with simple structure and easy processing, belonging to the technical field of automobile engineering. Background technique [0002] In the existing automobile engineering technology, the automobile exhaust pipe is a common device, which usually includes an air intake pipe, a catalytic converter, and an air outlet pipe; there are four air intake pipes, and the downstream of the air intake pipe is connected with a catalytic converter, and the catalytic converter A catalyst is arranged in the middle; the downstream of the catalytic converter is connected with an air outlet pipe; the air intake pipe, catalytic converter and air outlet pipe are integrated, and are formed by one stamping of a mold; after the automobile exhaust gas passes through the automobile exhaust pipe, harmful substances It can be basically absorbed; it can reduce the pollution...

AI Technical Summary

Problems solved by technology

[0002] In the existing automobile engineering technology, the automobile exhaust pipe is a common device, which usually includes an air intake pipe, a catalytic converter, and an air outlet pipe; there are four air intake pipes, and the downstream of the air intake pipe is connected with a catalytic converter, and the catalytic converter A catalyst is arranged in the middle; the downstream of the catalytic converter is connected with an air outlet pipe; the air intake pipe, catalytic converter and air outlet pipe are integrated, and are formed by one stamping of a mold; after the automobile exhaust gas passes through the automobile exhaust pipe, harmful substances It can be basically absorbed; it can reduce the pollution of automobile exhaust to the environment; however, the processing cost of the automobile exhaust pipe with this structure is high, the equipment requirements are high, and the processing is difficult; the price of a pair of stamping dies reaches hundreds of thousands; Special stamping machine tools are required, so the factory needs to invest heavily

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