CN201554535U

CN201554535U - Vehicle engine exhaust manifold assembly with catalyst converter

Info

Publication number: CN201554535U
Application number: CN2009202072992U
Authority: CN
Inventors: 赵文芳; 陶忆; 杜潇; 陈生超; 董腾鲜
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2009-11-24
Filing date: 2009-11-24
Publication date: 2010-08-18
Anticipated expiration: 2019-11-24

Abstract

The utility model discloses a vehicle engine exhaust manifold assembly with a catalyst converter, which comprises an exhaust manifold and a flange, wherein the exhaust manifold comprises an upper shell and a lower shell, the flange is vertically fixedly connected on an input of the exhaust manifold, a three-way catalyst converter and an outlet on the lower shell of the exhaust manifold are fixedly connected into an integrated body through a front conical tube, and an included angle Alpha of an axis line of the three-way catalyst converter and a projection line of a fixing connecting surface of the exhaust manifold is an obtuse angle. The vehicle engine exhaust manifold assembly with the catalyst converter has the advantages that because the catalyst converter and the exhaust manifold are welded into an integrated body, the structure is compact, the National IV discharge standard can be achieved just through first-grade catalysis, thereby meeting the demands of high performance of engines, and reducing the making cost.

Description

A kind of automobile engine to exhaust manifold assembly with catalyst converter

Technical field

The utility model relates to automobile engine exhaust system, is specifically related to a kind of automobile engine to exhaust manifold assembly with catalyst converter.

Background technique

Along with people more and more pay attention to environment, country is also more and more stricter to the requirement of motor vehicle exhaust emission, and the existing vertical state IV engine's exhaust system of putting is limit owing to the space, and catalyst converter generally is arranged under the body platform, is commonly called as chassis type.But it is far away from the gas exhaust manifold outlet that shortcoming is exactly a catalyzer, and single-stage catalysis does not reach the cold start-up requirement of state IV discharging (national quadravalence section vehicular emission standard), need carry out two-stage catalysis, thereby cause the product user cost higher.

Summary of the invention

The purpose of this utility model is to provide a kind of automobile engine to exhaust manifold assembly with catalyst converter, and its compact structure can satisfy the high performance requirement of motor, reach the emission standard of state IV, and cost is lower.

A kind of automobile engine to exhaust manifold assembly with catalyst converter described in the utility model comprises the gas exhaust manifold of being made up of upper shell and lower shell body, the flange plate that is fixedly connected on the gas exhaust manifold ingress, it is characterized in that:

Ternary catalyzing unit is fixedly connected into an integral body by the outlet on the lower shell body of preceding Taper Pipe and gas exhaust manifold;

The shaft axis of ternary catalyzing unit becomes the obtuse angle with the projection line angle α of fixedly connected of gas exhaust manifold.

Described a kind of automobile engine to exhaust manifold assembly with catalyst converter also comprises the first thermal shield support that is connected on the gas exhaust manifold upper shell, the second thermal shield support on the connection gas exhaust manifold lower shell body.

Described a kind of automobile engine to exhaust manifold assembly with catalyst converter, lambda sensor seat before on the preceding Taper Pipe of described ternary catalyzing unit, being provided with, outer pipe at ternary catalyzing unit is provided with the post oxygen sensor seat, and the outer pipe of ternary catalyzing unit is connected with the outlet(discharge) flange dish.

Described a kind of automobile engine to exhaust manifold assembly with catalyst converter also is provided with catalyst converter thermal shield support and catalyst converter auxiliary support frame on described ternary catalyzing unit.

Catalyst converter is welded into an integral body by preceding Taper Pipe and gas exhaust manifold, exports nearest purpose from gas exhaust manifold as far as possible with the catalyzer that reaches in the catalyst converter.

Gas exhaust manifold adopts two semi-stamping butt welding forms, and the gas exhaust manifold face of weld is vertical with the inlet flange dish, the urgent operation of the more convenient gas exhaust manifold construction bolt of this design.

Catalyst converter adopts auxiliary stand to support, and effectively raises the mode of this assembly, avoids gas exhaust manifold and motor to resonate; The ternary catalyzing unit shaft axis becomes the obtuse angle with manifold face of weld projection line angle α, and the exhaust that more helps motor flows to the catalyst center surface equably behind the gas exhaust manifold water conservancy diversion.

The utility model is compared with prior art and is had the following advantages: because catalyst converter and discharge manifold are welded as a whole, so compact structure has only one-level catalysis just can reach the emission standard of state IV, satisfied the high performance requirement of motor, and lower manufacture cost.

Description of drawings

Fig. 1 is a plan view of the present utility model.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

A kind of automobile engine to exhaust manifold assembly with catalyst converter referring to shown in Figure 1 comprises the gas exhaust manifold of being made up of upper shell 2 and lower shell body 3, the flange plate 1 that is fixedly connected on the gas exhaust manifold ingress, and flange plate is connected with gas exhaust manifold inlet vertical fixing; Ternary catalyzing unit 6 is fixedly connected into an integral body by the outlet on the lower shell body of preceding Taper Pipe and gas exhaust manifold; The shaft axis of ternary catalyzing unit 6 becomes the obtuse angle with the projection line angle α of fixedly connected of gas exhaust manifold.Also comprise the first thermal shield support 4 that is connected on the gas exhaust manifold upper shell 2, the second thermal shield support 12 on the connection gas exhaust manifold lower shell body 3.

Lambda sensor seat 5 before being provided with on the preceding Taper Pipe of described ternary catalyzing unit 6 is provided with post oxygen sensor seat 8 at the outer pipe 9 of ternary catalyzing unit 6, and the outer pipe 9 of ternary catalyzing unit 6 is connected with outlet(discharge) flange dish 7;

On described ternary catalyzing unit 6, also be provided with catalyst converter thermal shield support 10 and catalyst converter auxiliary support frame 11.

The upper shell 2 and the lower shell body 3 of gas exhaust manifold strike out shape earlier, then, make an integral body by welding manner and form gas exhaust manifold, are welded on the flange plate 1 again, and flange plate 1 links to each other with engine cylinder-body by 8 M8 bolts.For the ease of the encapsulation of catalyzer, catalyzer is selected for use cylindrical, is encapsulated within catalyst converter 6 housings by liner; The lower shell body 3 of gas exhaust manifold divides employing spherical open design with the inner cone pipe jointing part of catalyst converter 6, makes things convenient for the flange welding; Design auxiliary stand in catalyst converter left side supports 11, to improve the mode of whole gas exhaust manifold band catalytic converter assembly; Gas exhaust manifold and catalyst converter are installed on the gas exhaust manifold band catalytic converter assembly by the thermal shield support, damage peripheral component with the radiation heat that effectively prevents engine exhaust; The lambda sensor seat is surveyed various combustion informations in the catalyst converter by the lambda sensor of installing on it; Final engine exhaust is by among the muffler system that outer pipe 9 imports with outlet(discharge) flange dish 7 is connected.

Claims

1. the automobile engine to exhaust manifold assembly with catalyst converter comprises the gas exhaust manifold of being made up of upper shell (2) and lower shell body (3), the flange plate (1) that is connected the gas exhaust manifold ingress, it is characterized in that:

Flange plate (1) is connected with gas exhaust manifold inlet vertical fixing;

Ternary catalyzing unit (6) is fixedly connected into an integral body by the outlet on the lower shell body (3) of preceding Taper Pipe and gas exhaust manifold;

The shaft axis of ternary catalyzing unit (6) becomes the obtuse angle with the projection line angle α of fixedly connected of gas exhaust manifold.

2. a kind of automobile engine to exhaust manifold assembly with catalyst converter according to claim 1 is characterized in that: also comprise the first thermal shield support (4) that is connected on the gas exhaust manifold upper shell (2), the second thermal shield support (12) on the connection gas exhaust manifold lower shell body (3).

3. a kind of automobile engine to exhaust manifold assembly according to claim 1 and 2 with catalyst converter, it is characterized in that: lambda sensor seat (5) before on the preceding Taper Pipe of described ternary catalyzing unit (6), being provided with, outer pipe (9) in ternary catalyzing unit (6) is provided with post oxygen sensor seat (8), and the outer pipe (9) of ternary catalyzing unit (6) is connected with outlet(discharge) flange dish (7).

4. a kind of automobile engine to exhaust manifold assembly with catalyst converter according to claim 1 and 2 is characterized in that: also be provided with heat insulation support of catalyst converter (10) and catalyst converter auxiliary support frame (11) on described ternary catalyzing unit (6).