CN203050868U

CN203050868U - Automobile exhaust manifold assembly

Info

Publication number: CN203050868U
Application number: CN 201320009233
Authority: CN
Inventors: 陆志伟
Original assignee: ZHEJIANG MOTORBACS AUTOPARTS CO Ltd
Current assignee: ZHEJIANG MOTORBACS AUTOPARTS CO Ltd
Priority date: 2013-01-08
Filing date: 2013-01-08
Publication date: 2013-07-10
Anticipated expiration: 2023-01-08

Abstract

An automobile exhaust manifold assembly comprises a pipe body and a three-way catalyst, wherein the pipe body comprises an air inlet end and an air outlet end, and the air inlet end is connected with an exhaust port of an engine cylinder through an air inflow flange with multiple holes. The automobile exhaust manifold assembly is characterized in that the position of the three-way catalyst is set up in advance and is directly connected with the air outlet end of the pipe body in a welding mode to form an integrated structure. The pipe body is formed by welding of two sheet metal parts, the pipe body of an exhaust manifold is obtained, and a pipe connector of the air outlet end is eliminated. Therefore, the distance between the pipe body and the three-way catalyst is shortened, and the interior space of the pipe body formed by welding of the two sheet metal parts is larger than that of an ordinary branch pipe, so that exhausted waste gas from the engine cylinder can fast enter the three-way catalyst through the exhaust manifold, and exhaust efficiency is improved. In addition, by means of the structure, the three-way catalyst can be fast ignited. Meanwhile, the occupied space of the whole exhaust manifold assembly is reduced, and layout requirements of an engine compartment are met.

Description

A kind of automobile exhaust manifold assembly

Technical field

The utility model relates to a kind of automobile exhaust manifold.

Background technique

The automobile exhaust manifold is a kind of complex-shaped various specials structure, and its effect is to make waste gas produce eddy current in pipeline, can forcibly displace waste gas, and improves exhaust velocity.

In order to improve exhaust efficiency, it is that the Chinese model utility " a kind of gas exhaust manifold " of ZL200820166853.2 discloses a kind of like this gas exhaust manifold that prior art has the patent No., and this gas exhaust manifold includes arm, has inlet end and outlet side; Flange is separately positioned on inlet end and the outlet side of described arm, is used for the connection of gas exhaust manifold; Its tube outer surface is coated with one deck aluminium oxide ceramics layer, because the Organizational Structure of this stupalith of aluminium oxide is highly stable, at high temperature can oxidation, and ceramic fusing point is high suitable to high temperature material, makes the gas exhaust manifold that is coated with aluminium oxide to the non-ferrous metal of acid, alkali, salt and fusion stronger resistivity be arranged all; On the other hand, the arrangement outward appearance of gas exhaust manifold that is coated with aluminium oxide is also more attractive in appearance, has further improved the technology capability of gas exhaust manifold product.

But the gas exhaust manifold of above-mentioned patent takes up room bigger, is difficult to be placed put in place in narrow engine compartment.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of automobile exhaust manifold assembly that can reduce to take up room at above-mentioned prior art present situation, the waste gas that it makes engine cylinder discharge can enter ternary catalyzing unit by gas exhaust manifold more rapidly, has improved exhaust and catalytic efficiency.

The utility model solves the problems of the technologies described above the technological scheme that adopts: a kind of automobile exhaust manifold assembly, it includes body and ternary catalyzing unit, described body includes inlet end and outlet side, inlet end links to each other with the relief opening of engine cylinder by the inlet flange of a porous, it is characterized in that: the position of ternary catalyzing unit is arranged in advance, directly weld together with the outlet side of body, constitute integral structure.Can improve exhaust and catalytic efficiency like this.

As improvement, described body is to be welded by two sheet metal parts, obtains the body of gas exhaust manifold, and saves the pipe joint of outlet side.To have shortened the distance of ternary catalyzing unit and body, exhaust and catalytic efficiency have been improved.

Further improve, the body of described gas exhaust manifold is the outer ring welding along the ternary catalyzing unit housing, makes weld seam outside housing.Can prevent effectively that like this other foreign matters such as welding slag from entering ternary catalyzing unit, influences catalytic effect.

At last, described ternary catalyzing unit is made the housing of ternary catalyzing unit by eccentric spinning, and the housing stage casing of described ternary catalyzing unit is a cylinder shell, and two ends are non-axisymmetric conical shells.

Compared with prior art, advantage of the present utility model is: be directly to adopt two sheet metal parts to be welded, and do not need to be soldered to the pipe joint place by many arms as common manifold that saved pipe joint, operation is simple, good airproof performance.Therefore, distance between manifold and the ternary catalyzing unit shortens, the body inner space that other two panel beatings are welded is greater than common arm, this waste gas that just makes engine cylinder discharge can enter ternary catalyzing unit by gas exhaust manifold more rapidly, improved exhaust efficiency, in addition, such structure helps the quick ignition of ternary catalyzing unit, can reach higher exhaust emission standard on the basis that reduces the employed bullion content of ternary catalyzing unit, simultaneously, make the minimizing that takes up space of whole exhaust manifold assembly, satisfy the engine compartment arrangement requirement.

Description of drawings

Fig. 1 is the exhaust manifold assembly perspective view of present embodiment;

Fig. 2 is the ternary catalyzing unit perspective view of present embodiment;

Fig. 3 is the process step schematic representation of present embodiment;

Fig. 4 is traditional exhaust manifold assembly perspective view;

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model is a kind of exhaust manifold assembly 1 of automobile, include body 2 and the ternary catalyzing unit 3 that is connected with it, be provided with lambda sensor interface 2.9 on the body 2, body is welded by two stamping forming sheet metal parts 2.1 and sheet metal part 2.2, include inlet end 2.3 and outlet side 2.4, inlet end 2.3 is communicated with the relief opening of engine cylinder by a porous flange 2.5, and in common gas exhaust manifold, as shown in Figure 4, body 2 includes four arms 2.6, the relief opening of four arms is welded to pipe joint 2.7 places, the pipe joint 2.7 outer single hole flanges 2.8 that are provided with, the suction port of four arms 2.6 is connected to porous flange 2.5, be communicated with the relief opening of engine cylinder then, be compared to common gas exhaust manifold, the body of present embodiment has saved pipe joint, so the distance between the relief opening of engine cylinder and the ternary catalyzing unit 3 shortens, waste gas just can enter ternary catalyzing unit 3 faster, improved exhaust efficiency, simultaneously, such structure helps the quick ignition of ternary catalyzing unit, can reach higher exhaust emission standard on the basis that reduces the employed bullion content of ternary catalyzing unit, improve catalytic efficiency.

As shown in Figure 3, the housing of the ternary catalyzing unit 3 in the present embodiment is to be made by eccentric spinning, the stage casing is a cylinder shell 3.1, the outside is equipped with thermal shield, two ends are non-axisymmetric conical shells 3.2, the nonaxisymmetric shell 3.2 of one end and the outlet side 2.4 of body are welded together, concrete, body 2 is the outer ring welding along ternary catalyzing unit 3 housings, make weld seam outside housing, 2.4 port inner ring closely welds together along the outlet side with it like this, constitutes integral structure, can prevent effectively that like this other foreign matters such as welding slag from entering ternary catalyzing unit 3, influences catalytic effect.

In addition, produce this novel gas exhaust manifold formation technique, comprised following steps:

(1), by to two metal plate punchings, makes it to produce plastic deformation, thereby obtain the sheet metal part of required form and size, and the shape of two sheet metal parts is mated mutually;

(2), with two stamping forming sheet metal part seal weldings together, obtain the body of gas exhaust manifold;

(3), make the housing of ternary catalyzing unit by eccentric spinning, described housing stage casing is a cylinder shell; Two ends are non-axisymmetric conical shells;

(4), the inlet end of body and ternary catalyzing unit is welded, make integrated exhaust manifold assembly.

Therefore, in the common exhaust manifold assembly, be earlier each root arm to be soldered to the pipe joint place, pipe joint and ternary catalyzing unit welded together by flange that the distance between manifold and the ternary catalyzing unit is far away, whole pipeline is also longer, influenced exhaust and the catalytic effect of motor, and exhaust manifold assembly of the present utility model, manifold and ternary catalyzing unit adopt integral structure, saved pipe joint and flange, exhaust efficiency and catalytic efficiency all are improved.

Claims

1. automobile exhaust manifold assembly, it includes body and ternary catalyzing unit, described body includes inlet end and outlet side, inlet end links to each other with the relief opening of engine cylinder by the inlet flange of a porous, it is characterized in that: the position of ternary catalyzing unit is arranged in advance, directly weld together with the outlet side of body, constitute integral structure.

2. automobile exhaust manifold assembly according to claim 1 is characterized in that described body is to be welded by two sheet metal parts, obtains the body of gas exhaust manifold, and saves the pipe joint of outlet side.

3. automobile exhaust manifold assembly according to claim 2, the body that it is characterized in that described gas exhaust manifold are the outer ring welding along the ternary catalyzing unit housing, make weld seam outside housing.

4. automobile exhaust manifold assembly according to claim 3 is characterized in that described ternary catalyzing unit makes the housing of ternary catalyzing unit by eccentric spinning, and the housing stage casing of described ternary catalyzing unit is a cylinder shell, and two ends are non-axisymmetric conical shells.