CN206617218U - A kind of exhaust manifold of optimization - Google Patents

Abstract

The utility model is a kind of exhaust manifold of optimization, wherein manifold includes forward flange, catalyst converter cylinder, it is arranged at the rear end cap of catalyst converter cylinder back-end, the connecting tube being connected with rear end cap, the rear flange being connected with connecting tube, manifold also includes the manifold assemblies of manifold four, the manifold assemblies of manifold four include upper shell and setting and the lower house below upper shell, upper shell and lower house, which are closed, to be formed two ends and has the cavity of opening, the front end of the manifold assemblies of manifold four is many exhaust branch pipes being connected with forward flange, the rear end of the manifold assemblies of manifold four is the drive end bearing bracket being connected with catalyst converter cylinder, drive end bearing bracket and the lateral surface of exhaust branch pipe junction are provided with first stiffener muscle, drive end bearing bracket and the medial surface of exhaust branch pipe junction are provided with Article 2 stiffener muscle.The exhaust manifold structure of optimization of the present utility model is simple, be not take up spatial volume, and global knots modification is small, integral rigidity is high, can improve the housing fatigue fracture produced by torsion and three-element catalytic carrier comes off.

Description

A kind of exhaust manifold of optimization

Technical field

The utility model is a kind of exhaust manifold of optimization.

Background technology

Exhaust manifold, is connected with engine cylinder block, for the exhaust of each cylinder to be put together into importing exhaust main And the pipeline that band is disagreed.Exhaust manifold is arranged in engine exhaust outlet, and existing exhaust manifold is divided into casting manifold and shell Body formula punching press manifold.Casting manifold structure rigidity is big, and heavier mass, fuel economy is poor.With entering that environmental regulation is required The raising of one step and the requirement of cold start-up exhaust emissions, the position of catalyst converter are increasingly closer to engine exhaust port, at present exhaust Manifold is generally punching press housing component.Punching press housing component quality is lighter than casting, but the rigidity of structure is less than casting structure rigidity, when starting When machine driving frequency is close with stamping parts manifold intrinsic frequency, it may occur that resonance, so as to cause the fracture of manifold assembly or carrier de- Fall.The problem of being come off with carrier is largely broken for the punching press manifold three-element catalytic assembly of Market Feedback, many experiments are being carried out It is the main cause for causing three-element catalytic carrier to come off to find that punching press manifold single order is reversed after test.

In view of above-mentioned defect, the design people is actively studied, to provide a kind of manifold improved new method, The structural behaviour of manifold is improved with this.

Utility model content

In order to solve the above technical problems, the exhaust manifold structure of optimization of the present utility model is simple, be not take up spatial volume, Global knots modification is small, integral rigidity is high, can improve the housing fatigue fracture produced by torsion and three-element catalytic carrier comes off Phenomenon.

The exhaust manifold of optimization of the present utility model, including：Forward flange, catalyst converter cylinder, it is arranged at after catalyst converter cylinder The rear end cap at end, the connecting tube being connected with rear end cap, the rear flange being connected with connecting tube, the exhaust manifold of optimization also include manifold Four manifold assemblies, the manifold assemblies of manifold four include upper shell and the lower house being arranged at below upper shell, upper shell and lower house Closure, which forms two ends, has the cavity of opening, and the front end of the manifold assemblies of manifold four is many exhaust branch pipes being connected with forward flange, The rear end of the manifold assemblies of manifold four is the drive end bearing bracket that is connected with catalyst converter cylinder, the inner chamber of drive end bearing bracket respectively with exhaust branch pipe, urge Change the inner chamber connection of device cylinder, drive end bearing bracket and the lateral surface of exhaust branch pipe junction are provided with first stiffener muscle, drive end bearing bracket Article 2 stiffener muscle is provided with the medial surface of exhaust branch pipe junction.

Further, the exhaust manifold of optimization of the present utility model, sets respectively on the lateral surface and medial surface of drive end bearing bracket There are three punching press concave bars.

Further, the exhaust manifold of optimization of the present utility model, sets respectively on the lateral surface and medial surface of drive end bearing bracket There is solid steel bar.

By such scheme, the utility model at least has advantages below：The exhaust manifold of optimization of the present utility model, its Manifold rigidity after improvement is big, contributes to adjustment structure vibration frequency, it is avoided construction torsion resonant frequency, makes manifold assembly It is not broken and is not fallen off with three-element catalytic carrier.Improvement of the method to manifold is simple, it is easy to accomplish, it is not take up existing space, side Boundary's condition need not be changed.Additional 2 muscle on manifold, it is easy to which later product is improved, do not waste existing mold, and reduction is improved Cost.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below Describe in detail bright as after.

Brief description of the drawings

The exhaust manifold structure schematic diagram of Fig. 1 optimizations of the present utility model；

The exhaust manifold structure schematic diagram of Fig. 2 optimizations of the present utility model

Wherein, 1：Forward flange；2：The branch pipe of outlet 4 band catalyst converter protecgulum upper half shell；3：Under the branch pipe of outlet 4 band catalyst converter protecgulum Half-shell；4th, first stiffener muscle；5 lambda sensor installation bolt holes；6：Catalyst converter cylinder；7：Rear end cap；8th, mounting hole；9th, even Adapter；10：Rear flange；11：First punching press concave bar； 12：First punching press concave bar；13：First punching press concave bar；14：First stamped female Muscle；15：First punching press concave bar；16：First punching press concave bar；17：Article 2 stiffener muscle；

Embodiment

With reference to the accompanying drawings and examples, the embodiment to the exhaust manifold of optimization of the present utility model is made into one Step is described in detail.Following examples are used to illustrate the utility model, but are not limited to scope of the present utility model.

Referring to Fig. 1 to Fig. 2, forward flange 1 is connected by bolt with engine exhaust outlet, before the branch pipe of outlet 4 band catalyst converter The cavity of opening before and after half-shell 2 is welded to form with the branch pipe of outlet 4 with catalyst converter protecgulum lower half shell 3 is covered, lambda sensor installs spiral shell Keyhole 5 is opened on the branch pipe of outlet 4 band catalyst converter protecgulum upper half shell, and catalyst converter cylinder 6 is connected with catalyst converter rear end cap 7, catalyst converter Rear end cap is connected by connecting tube 9 with rear flange 10.The branch pipe of the outlet 4 band upper and lower half-shell of catalyst converter protecgulum constitutes exhaust manifold 4 4 branch pipes of cylinder machine and the drive end bearing bracket of three-element catalytic ceramic monolith housing.In the branch pipe of the outlet 4 band upper and lower half-shell of catalyst converter protecgulum Meet adds the first punching press concave bar 11 shown in Fig. 1 and Fig. 2, the first punching press concave bar 12, the first punching press concave bar 13, the first stamped female Muscle 14, the first punching press concave bar 15, the first punching press concave bar 16 and first strengthen solid steel bar 4, Article 2 stiffener muscle 17.

Preferably, the first punching press concave bar 11, the first punching press concave bar 12, the first punching press concave bar 13, the first punching press concave bar 14, First punching press concave bar 15, the first punching press concave bar use arc transition angle, and muscle is difficult too high.

Preferably, the exhaust manifold of new optimization of the present utility model, first stiffener muscle 4, Article 2 stiffener Muscle is welded at lower half shell most thin closing waist, and muscle length to upper-lower casing welding edge, rear end cap is provided with mounting hole 8.

Punching press muscle and first stiffener muscle, Article 2 stiffener muscle set the exhaust for adding optimization of the present utility model The intensity of manifold so that manifold assembly is not easy to break, three-way catalytic converter carrier is difficult for drop-off.First stiffener muscle, Article 2 Stiffener muscle forms first stiffener muscle and Article 2 stiffener muscle respectively.

It the above is only preferred embodiment of the present utility model, be not limited to the utility model, it is noted that for For those skilled in the art, on the premise of the utility model technical principle is not departed from, if can also make Dry improvement and modification, these improvement and modification also should be regarded as protection domain of the present utility model.

Claims (3)

1. a kind of exhaust manifold of optimization, including forward flange, catalyst converter cylinder, the rear end cap for being arranged at catalyst converter cylinder back-end, The connecting tube being connected with rear end cap, the rear flange being connected with connecting tube, the exhaust manifold of optimization also include the manifold assemblies of manifold four, The manifold assemblies of manifold four include upper shell and the lower house being arranged at below upper shell, and upper shell and lower house close to form two ends Cavity with opening, the front end of the manifold assemblies of manifold four is many exhaust branch pipes being connected with forward flange, the branch pipe group of manifold four The rear end of part is the drive end bearing bracket that is connected with catalyst converter cylinder, the inner chamber of drive end bearing bracket respectively with exhaust branch pipe, catalyst converter cylinder Chamber is connected, and drive end bearing bracket and the lateral surface of exhaust branch pipe junction connect provided with first stiffener muscle, drive end bearing bracket and exhaust branch pipe The medial surface for meeting place is provided with Article 2 stiffener muscle.

2. exhaust manifold according to claim 1, it is characterised in that：Set respectively on the lateral surface and medial surface of drive end bearing bracket There are three punching press concave bars.

3. exhaust manifold according to claim 1, it is characterised in that：Set respectively on the lateral surface and medial surface of drive end bearing bracket There is 1 additional solid steel bar.