CN201554536U

CN201554536U - Exhaust manifold assembly

Info

Publication number: CN201554536U
Application number: CN2009202075187U
Authority: CN
Inventors: 陶忆; 陈生超; 赵文芳; 杜潇; 叶天行
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2009-12-04
Filing date: 2009-12-04
Publication date: 2010-08-18
Anticipated expiration: 2019-12-04

Abstract

The utility model discloses an exhaust manifold assembly. The exhaust manifold assembly comprises an exhaust manifold collecting air passage, an oxygen sensor, an outlet ring flange and an air outlet pipe, wherein the exhaust manifold collecting air passage is formed by welding an upper casing and a lower casing; the oxygen sensor is arranged at the right part of the exhaust manifold collecting air passage; the outlet ring flange and the air outlet pipe are connected at the right end of the exhaust manifold collecting air passage; one end of one of four bent air passages is connected with the left end of the exhaust manifold collecting air passage; one end of each of the other three bent air passages is connected with one side of the exhaust manifold collecting air passage; and the other end of each of the four bent air passages is connected with an air intake ring flange. The utility model has the advantages that the problem that emission requirement cannot be met during cold starting due to low discharge temperature is solved; the 'Europe four' standards for four-cylinder small and medium-displacement automobile engines can be met; the product can be light; the manufacture bottleneck that complete-robot welding during assembly welding cannot be realized is solved; the manufacturability of the product is improved; and the reliability of the product is also improved in the aspect of manufacture.

Description

A kind of exhaust manifold assembly

Technical field

The utility model relates to the motor car engine annex, is specifically related to a kind of exhaust manifold assembly.

Background technique

Along with people are more and more stricter to automobile emissions standards to the pay attention to day by day and the country of environmental protection, this just requires three-way catalytic converter ignition fast, solves during the cold starting because temperature is crossed the low problem that can't satisfy emission standard.And for the vertical motor of putting that is used for minicar, vibrate during work greatly, arrangement space is little, requires gas exhaust manifold that higher reliability is arranged; Simultaneously, product will have better manufacturability, can realize that manifold removes the thermal shield support and body portion is realized full robot welding.The gas exhaust manifold body portion of existing exhaust manifold assembly adopts two punching presses, half shell to be welded, whole punching press causes the material reduction higher, and this scheme can't adopt robot welding (welding gun and manifold half shell are interfered) at air flue and inlet flange part, thereby efficient is not high on making, and can produce harmful effect to product reliability.

Summary of the invention

The purpose of this utility model provides a kind of exhaust manifold assembly, and its compact structure, anufacturability are good, can realize full robot welding, enhance productivity, and can satisfy the requirement of motor high standard discharging, can improve the reliability of product itself again.

A kind of exhaust manifold assembly described in the utility model, comprise that the gas exhaust manifold that is welded by upper shell and lower shell body gathers air flue, be located at gas exhaust manifold and gather the lambda sensor of air flue right part, be connected gas exhaust manifold and gather the outlet(discharge) flange dish and the steam outlet pipe of air flue right-hand member, it is characterized in that: an end of one in four bend pipe air flues is connected with the left end that gas exhaust manifold gathers air flue, an end of three is connected with the side that gas exhaust manifold gathers air flue respectively, and the other end of four bend pipe air flues is connected with air inlet flange disks.

Described a kind of exhaust manifold assembly comprises that also two the thermal shield mounting brackets, the end that are located on the upper shell are connected the reinforcing bracket that the other end is connected with air inlet flange disks with upper shell.

Described a kind of exhaust manifold assembly, its described upper shell and lower shell body are the stainless steel stamping part.This exhaust manifold assembly adopts stainless steel material to make, because the thin 10mm of the medicine of the relative cast iron of stainless steel manifold airway walls, the absorption heat is few, can guarantee the arrival ternary catalyzing unit front end that heat is fast as far as possible during engine start, make it reach initiation temperature as early as possible, do not reach the problem of emission request during with the solution cold starting owing to delivery temperature is low.

Described a kind of exhaust manifold assembly, its described air inlet flange disks and outlet(discharge) flange dish are the punching type thin flange, to alleviate the weight of product.

The utility model is compared with prior art and is had the following advantages: owing to adopt stainless steel material to make, do not reach the problem of emission request when having solved cold starting because of delivery temperature is low, satisfied the medium and small discharge capacity motor car engine of the four cylinders requirement of Ou Si emission standard; Adopt the punching type thin flange, realized the lightweight of product; By adopting the design of half shell and bend pipe welding, can't realize the manufacturing bottleneck of full robot welding when having solved the assembly welding, improved manufacturing process and product, also improved reliability of products from manufacture view.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the right elevation of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Embodiment

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

Referring to Fig. 1, Fig. 2 and a kind of exhaust manifold assembly shown in Figure 3, comprise that the gas exhaust manifold that is welded by upper shell 3 and lower shell body 2 gathers air flue, be located at gas exhaust manifold and gather the lambda sensor 6 of air flue right part, be connected outlet(discharge) flange dish 8 and steam outlet pipe 9 that gas exhaust manifold gathers the air flue right-hand member;

An end of one in four bend pipe air flues 4 is connected with the left end that gas exhaust manifold gathers air flue, an end of three is connected with the side that gas exhaust manifold gathers air flue respectively, and the other end of four bend pipe air flues is connected with air inlet flange disks 1;

Comprise that also two the thermal shield mounting brackets 5, the end that are located on the upper shell 3 are connected the reinforcing bracket 7 that the other end is connected with air inlet flange disks 1 with upper shell 3.

Upper shell 3 and lower shell body 2 are the stainless steel stamping part, and air inlet flange disks 1 and outlet(discharge) flange dish 8 are the punching type thin flange.

Upper shell 3 of the present utility model is welded into gas exhaust manifold with lower shell body 2 and gathers air flue, be welded into the gas exhaust manifold body with bend pipe air flue 4 again, then successively with inlet flange 1, thermal shield mounting bracket 5, lambda sensor 6, reinforcing bracket 7, go out pipe 9, outlet(discharge) flange dish 8 is welded into exhaust manifold assembly, whole welding process adopts manual welding during except welding thermal shield mounting bracket, and other operations all adopt robot welding.

Claims

1. exhaust manifold assembly, comprise that the gas exhaust manifold that is welded by upper shell (3) and lower shell body (2) gathers air flue, be located at gas exhaust manifold and gather the lambda sensor (6) of air flue right part, be connected gas exhaust manifold and gather the outlet(discharge) flange dish (8) and the steam outlet pipe (9) of air flue right-hand member, it is characterized in that: an end of one in four bend pipe air flues (4) is connected with the left end that gas exhaust manifold gathers air flue, an end of three is connected with the side that gas exhaust manifold gathers air flue respectively, and the other end of four bend pipe air flues is connected with air inlet flange disks (1).

2. a kind of exhaust manifold assembly according to claim 1 is characterized in that: comprise that also two the thermal shield mounting brackets (5), the end that are located on the upper shell (3) are connected the reinforcing bracket (7) that the other end is connected with air inlet flange disks (1) with upper shell (3).

3. a kind of exhaust manifold assembly according to claim 1 and 2 is characterized in that: described upper shell (3) and lower shell body (2) are the stainless steel stamping part.

4. a kind of exhaust manifold assembly according to claim 1 and 2 is characterized in that: described air inlet flange disks (1) and outlet(discharge) flange dish (8) are the punching type thin flange.