CN202431350U - Novel exhaust manifold close coupling catalyst structure - Google Patents

Abstract

The utility model relates to a novel exhaust manifold close coupling catalyst structure, which comprises a gas inlet end flange, a gas outlet end flange, a catalyst, an exhaust manifold left shell and an exhaust manifold right shell, wherein the exhaust manifold left shell and the exhaust manifold right shell are welded through punching to form an exhaust manifold; each branch pipe of the exhaust manifold is arranged in a plane; the exhaust manifold right shell is connected with the catalyst; and the lower end of the exhaust manifold is connected with the gas inlet end flange. The integrated catalyst structure is simple and rational in design, the packaging cost of the catalyst is reduced, each branch pipe of the exhaust manifold is in a plane, and the condition that the waste gas discharged by an engine does not reach the standard caused by reduced exhaust temperature due to overlong catalyst pipeline can be effectively avoided.

Description

A new exhaust manifold close-coupled catalytic converter structure

technical field

The utility model relates to a novel exhaust manifold tightly coupled catalyst structure, which belongs to the technical field of engine exhaust and emission control. the

Background technique

At present, the branch pipes and collecting pipes of the exhaust manifold occupy a large space, and the corresponding catalytic converter has a small space. Usually, the catalytic carrier is divided into two parts to meet the space layout requirements. The disadvantage of this structure is that the space of the exhaust manifold catalytic converter is too small, the catalytic converter needs to be divided into two parts for packaging, and the overall cost is high. When the high-temperature exhaust gas exhausted from each branch port of the exhaust manifold passes through a long pipeline, the temperature of the exhaust gas drops, and part of the exhaust gas does not chemically react with the catalyst on the catalytic converter, so that the exhaust gas emitted by the engine does not meet the standard. the

Contents of the invention

The purpose of this utility model is to overcome the deficiencies in the above-mentioned technologies, provide a simple structure, reasonable design, which can optimize the structure of the exhaust manifold tightly coupled catalytic converter, reduce the packaging cost of the catalytic converter, and solve the problems caused by multi-stage catalytic converters. The structure of the new exhaust manifold is closely coupled with the catalytic converter, which has an excessively long exhaust pipe and reduces the temperature of the exhaust gas without chemical reaction with the catalyst. In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: including the inlet flange, the outlet flange, the catalytic converter, the left casing of the exhaust manifold, the right casing of the exhaust manifold, the exhaust The left casing of the manifold and the right casing of the exhaust manifold are stamped and welded to form the exhaust manifold. Connected to the inlet flange. The utility model has the advantages of: The integrated catalytic converter is simple in structure and reasonable in design, which reduces the packaging cost of the catalytic converter. Causes the exhaust gas emitted by the engine to fail to meet the standard. the

BRIEF DESCRIPTION OF THE DRAWINGS [0004] Figure 1 is a schematic structural view of the utility model.

DETAILED DESCRIPTION [0005] Below in conjunction with the accompanying drawings, the embodiments of the present utility model will be further described in detail. As can be seen from Fig. 1, the utility model includes an inlet flange 5, an outlet flange 1, a catalytic converter 2, an exhaust manifold left housing 4, an exhaust manifold right housing 3, and the exhaust manifold The left casing 4 of the pipe and the right casing 3 of the exhaust manifold are stamped and welded to form an exhaust manifold. The lower end of the manifold is connected with the inlet flange 5 . Each branch pipe of the exhaust manifold corresponds to an intake flange 5 . The structure of the new exhaust manifold of the utility model is closely coupled with the catalytic converter, which comprises an inlet flange 5, an air outlet flange 1, a catalytic converter 2, an exhaust manifold left housing 4, an exhaust manifold right housing 3, The exhaust manifold left casing 4 and the exhaust manifold right casing 3 are stamped and welded to form an exhaust manifold. The length of the gas manifold, so as to avoid the situation that the exhaust gas exhausted by the engine does not meet the standard due to the decrease of the exhaust gas temperature caused by the excessively long catalytic converter pipeline. The right casing 3 of the exhaust manifold is connected with the catalytic converter 2 , and the lower end of the exhaust manifold is connected with the flange 5 of the intake end. Each branch pipe of the exhaust manifold corresponds to an inlet flange 5 to ensure that it can be assembled.

Claims (2)

1. novel exhaust manifold close coupling catalyst converter structure; Comprise inlet end flange (5), outlet side flange (1), catalyst converter (2); Gas exhaust manifold left shell (4); Gas exhaust manifold right shell body (3) is characterized in that: described gas exhaust manifold left shell (4), gas exhaust manifold right shell body (3) form gas exhaust manifold through the punching press welding, and each arm of gas exhaust manifold is in a plane; Gas exhaust manifold right shell body (3) links to each other with catalyst converter (2), and the gas exhaust manifold lower end is connected with inlet end flange (5).

2. a kind of novel exhaust manifold close coupling catalyst converter structure according to claim 1 is characterized in that: all corresponding inlet end flange (5) of each root arm of described gas exhaust manifold.

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