CN202091000U

CN202091000U - Improved exhaust manifold catalytic reactor assembly

Info

Publication number: CN202091000U
Application number: CN2011201239609U
Authority: CN
Inventors: 陈法献
Original assignee: ZHEJIANG BONDLYE MOTOR ENVIRONMENTAL TECHNOLOGY CO LTD
Current assignee: ZHEJIANG BONDLYE ENVIRONMENTAL TECHNOLOGY CO., LTD.
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2011-12-28
Anticipated expiration: 2021-04-25

Abstract

Provided is an improved exhaust manifold catalytic reactor assembly, belonging to the technical filed of the light-duty gasoline engine exhaust manifold catalytic reactor and comprising an exhaust manifold front flange, an exhaust manifold, a catalytic reactor upper end cover, a catalytic reactor cylindrical shell and a catalytic reactor lower end cover. The catalytic reactor is provided in the catalytic reactor cylindrical shell and is covered by a catalytic reactor liner; two ends of the catalytic reactor are respectively capped by the catalytic reactor upper end cover and the catalytic reactor lower end cover. The exhaust manifold is composed of an exhaust manifold upper housing and an exhaust manifold lower housing which are in fixed connection; the exhaust manifold upper housing is provided with an oxygen sensor connection nut. The catalytic reactor cylindrical shell and the catalytic reactor are arranged in an inclined angle. The exhaust manifold catalytic reactor assembly has the advantages of smooth gas flow, uniform gas distribution, sensitive signal receiving of the oxygen sensor, reduced exhaust backpressure, high endurance and low production cost.

Description

A kind of improved gas exhaust manifold catalytic converter assembly

Technical field

The utility model belongs to light-duty petrol engine gas exhaust manifold catalyst converter technical field, is specifically related to a kind of improved gas exhaust manifold catalytic converter assembly.

Background technique

At present, the environmental problem that motor vehicle exhaust emission brings more and more is subjected to the attention of countries in the world, and the three-element catalytic post-processing technology is mainly adopted in the reduction of NOx in the tail-gas from gasoline automobiles.China has possessed the technology that three-element catalytic is produced in batches, and progressively this technology is applied in the tight lotus root formula gas exhaust manifold catalytic converter assembly, and the exhaust emissions control of gasoline car has been brought up to the level of Europe III and Europe IV.

But, the unreasonable structure of existing tight lotus root formula gas exhaust manifold catalytic converter assembly, cause the catalytic converter assembly internal gas flow obstructed, gas is inhomogeneous, oxygen sensor signal receive insensitive, exhaust back pressure is high, poor durability and cost of production height.

Summary of the invention

Problem at the prior art existence, the purpose of this utility model is to design the technological scheme that a kind of improved gas exhaust manifold catalytic converter assembly is provided, this gas exhaust manifold catalytic converter assembly gas flow is unobstructed, distribution of gas evenly, oxygen sensor signal receives sensitivity, exhaust back pressure reduction, high-durability and produces low cost.

Described a kind of improved gas exhaust manifold catalytic converter assembly, comprise the gas exhaust manifold forward flange, gas exhaust manifold, the catalyst converter upper end cap, catalyst converter cylindrical shell and catalyst converter lower end cap, in the catalyst converter cylindrical shell catalyst converter is set, catalyst converter is wrapped up by the catalyst converter liner, the two ends of catalyst converter cylindrical shell are respectively by catalyst converter upper end cap and the capping of catalyst converter lower end cap, it is characterized in that described gas exhaust manifold is fixedlyed connected with the gas exhaust manifold lower shell body by the gas exhaust manifold upper shell constitutes, the lambda sensor attaching nut is set on the gas exhaust manifold upper shell, and described catalyst converter cylindrical shell and catalyst converter are the angle of inclination and are provided with.

Described a kind of improved gas exhaust manifold catalytic converter assembly is characterized in that described gas exhaust manifold forward flange by the Stainless Sheet Steel impact briquetting, and gas exhaust manifold forward flange and engine cylinder cover exhaust side seal setting by the convex plane structure that is provided with.

Described a kind of improved gas exhaust manifold catalytic converter assembly is characterized in that described fixing by welding by stamping forming gas exhaust manifold upper shell of Stainless Sheet Steel and gas exhaust manifold lower shell body.

Described a kind of improved gas exhaust manifold catalytic converter assembly is characterized in that described lambda sensor attaching nut goes up connection lambda sensor is set.

Described a kind of improved gas exhaust manifold catalytic converter assembly is characterized in that described catalyst converter cylindrical shell and catalyst converter are 10-18 degree angle lapping and tiltedly are provided with.

Described a kind of improved gas exhaust manifold catalytic converter assembly is characterized in that described catalyst converter liner two ends protect by the catalyst converter liner back-up ring that is provided with.

Described a kind of improved gas exhaust manifold catalytic converter assembly, it is characterized in that fixedly connected gas exhaust manifold support in described catalyst converter lower end cap lower end and tail end flange, the gas exhaust manifold support can be connected with engine cylinder-body, and the tail end flange is tightly connected by the stud of setting on it and the exhaust manifold on the cylinder.

Above-mentioned a kind of improved gas exhaust manifold catalytic converter assembly, simple in structure, reasonable in design, take into full account the spatial constraints that motor is installed, realize the convenience that the gas exhaust manifold catalytic converter assembly is installed.The utility model rationalization gas flow reduces exhaust back pressure, and the gas in the uniform distribution catalyst converter has greatly improved the catalytic efficiency of catalyst converter.Welding procedure all adopts the robot welding moulding, has guaranteed the conformity of part production and the durability of using process.

Description of drawings

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

Fig. 2 is a partial sectional view of the present utility model.

Among the figure: 1-gas exhaust manifold forward flange; 2-gas exhaust manifold upper shell; 3-gas exhaust manifold lower shell body; 4-lambda sensor attaching nut; 5-catalyst converter upper end cap; 6-catalyst converter cylindrical shell; The 7-catalyst converter; 8-catalyst converter liner back-up ring; 9-catalyst converter liner; 10-catalyst converter lower end cap; 11-tail end flange; 12-gas exhaust manifold support; The 13-stud.

Embodiment

Further specify the utility model below in conjunction with Figure of description.

As shown in the figure, a kind of improved gas exhaust manifold catalytic converter assembly comprises gas exhaust manifold forward flange 1, gas exhaust manifold, catalyst converter upper end cap 5, catalyst converter cylindrical shell 6, catalyst converter 7 and catalyst converter lower end cap 10.Gas exhaust manifold forward flange 1 is by the Stainless Sheet Steel impact briquetting, and gas exhaust manifold forward flange 1 seals setting with the engine cylinder cover exhaust side by the convex plane structure that is provided with.Gas exhaust manifold fastens welding by stamping forming gas exhaust manifold upper shell 2 of Stainless Sheet Steel and gas exhaust manifold lower shell body 3 and forms.Lambda sensor attaching nut 4 is set on the gas exhaust manifold upper shell 2, and connection is provided with lambda sensor on the lambda sensor attaching nut 4.Above-mentioned design fully takes into account sealing, and air-flow is unobstructed, and low back pressure loss and sensor signal receive problems such as sensitivity, guarantees the performance requirement of motor for gas exhaust manifold.

Catalyst converter cylindrical shell 6 two ends are respectively by catalyst converter

upper end cap

5 and 10 cappings of catalyst converter lower end cap, catalyst converter 7 is set in the catalyst converter cylindrical shell 6, catalyst converter cylindrical shell 6 and catalyst converter 7 are the angle of inclination and arrange in whole motor, the angle of inclination is between the 10-18 degree, center of gravity that like this can this assembly of reasonable Arrangement reduces the vibrational loading of engine luggine butt welded seam and part material.Catalyst converter cylindrical shell 6 and catalyst converter 7 are in tilted layout and can also guarantee the design space of catalyst converter lower end cap 10, and it is more reasonable that exhaust gas is flowed, and the loss that reduces to dam reduces the discharging back pressure.

Damaged under abominable situations such as vibration for preventing ceramic catalytic device carrier; 6 of catalyst converter 7 and catalyst converter cylindrical shells have catalyst converter liner 9; catalyst converter liner 9 two ends are protected it by catalyst converter liner back-up ring 8; in order to avoid by the high-temp waste gas erosion; this measure has guaranteed the durability that catalyst converter uses, and can reduce the cost of catalyst converter liner 9 again.

Catalytic converter assembly is fixed on the engine cylinder-body by the gas exhaust manifold support 12 that is welded on the catalyst converter lower end cap 10, and is tightly connected by the exhaust manifold that is arranged on tail end flange 11 on the catalyst converter lower end cap 10 and stud 13 and motor.

During work, waste gas by the discharge of engine cylinder cap air outlet flue, through gas exhaust manifold forward flange 1, flow into gas exhaust manifold, waste gas in gas exhaust manifold be fixed on lambda sensor attaching nut 4 on lambda sensor fully contact, waste gas is distributed to uniformly and carries out catalytic reduction reaction in the catalyst converter 7 through the diffusion of catalyst converter upper end cap 5, make the reaction of catalyst converter each several part even, improved the reaction efficiency of catalyst converter greatly.

Claims

1. improved gas exhaust manifold catalytic converter assembly, comprise gas exhaust manifold forward flange (1), gas exhaust manifold, catalyst converter upper end cap (5), catalyst converter cylindrical shell (6) and catalyst converter lower end cap (10), catalyst converter (7) is set in the catalyst converter cylindrical shell (6), catalyst converter (7) is wrapped up by catalyst converter liner (9), the two ends of catalyst converter cylindrical shell (6) are respectively by catalyst converter upper end cap (5) and catalyst converter lower end cap (10) capping, it is characterized in that described gas exhaust manifold fixedlys connected formation by gas exhaust manifold upper shell (2) with gas exhaust manifold lower shell body (3), lambda sensor attaching nut (4) is set on the gas exhaust manifold upper shell (2), and described catalyst converter cylindrical shell (6) and catalyst converter (7) are the angle of inclination and are provided with.

2. a kind of improved gas exhaust manifold catalytic converter assembly as claimed in claim 1, it is characterized in that described gas exhaust manifold forward flange (1) by the Stainless Sheet Steel impact briquetting, gas exhaust manifold forward flange (1) seals setting with the engine cylinder cover exhaust side by the convex plane structure that is provided with.

3. a kind of improved gas exhaust manifold catalytic converter assembly as claimed in claim 1 is characterized in that described fixing by welding by stamping forming gas exhaust manifold upper shell of Stainless Sheet Steel (2) and gas exhaust manifold lower shell body (3).

4. a kind of improved gas exhaust manifold catalytic converter assembly as claimed in claim 1 is characterized in that described lambda sensor attaching nut (4) goes up connection lambda sensor is set.

5. a kind of improved gas exhaust manifold catalytic converter assembly as claimed in claim 1 is characterized in that described catalyst converter cylindrical shell (6) and catalyst converter (7) are 10-18 degree angle lapping and tiltedly are provided with.

6. a kind of improved gas exhaust manifold catalytic converter assembly as claimed in claim 1 is characterized in that described catalyst converter liner (9) two ends protect by the catalyst converter liner back-up ring (8) that is provided with.

7. a kind of improved gas exhaust manifold catalytic converter assembly as claimed in claim 1, it is characterized in that described catalyst converter lower end cap (10) fixedly connected gas exhaust manifold support in lower end (12) and tail end flange (11), gas exhaust manifold support (12) can be connected with engine cylinder-body, and tail end flange (11) is tightly connected by the stud (13) of setting on it and the exhaust manifold on the cylinder.