CN207348979U - One kind becomes muscle structure exhaust manifold gasket - Google Patents

Abstract

It the utility model is related to a kind of change muscle structure exhaust manifold gasket, including sealing pad body, sealing pad body lower edges are equipped with bolt connecting hole, multiple air flue holes are set side by side on sealing pad body, bolt connecting hole is located at the both sides in each air flue hole, and the circumferential edge in each air flue hole sets annular seal muscle, and every layer of region beyond air flue hole of sealed muscle of three-decker is to be fixedly connected, setting gap between the two close at air flue hole, first layer sealed muscle is set with second layer sealed muscle mirror image；Third layer sealed muscle is set with second layer sealed muscle mirror image, is fitted positioned at second layer sealed muscle at air flue hole with third layer sealed muscle；The circumferentially upper different zones height of every layer of sealed muscle is different with width, and each layer sealed muscle is identical with width value in longitudinal same area height value.According to joint bolt connecting hole position distribution, by strengthening the screen resilience of sealed muscle, guarantee gasket seal performance to compressing the height of hypodynamic position increase sealed muscle and reducing sealed muscle width.

Description

One kind becomes muscle structure exhaust manifold gasket

Technical field：

It the utility model is related to a kind of automobile engine exhaust manifold gasket structure, and in particular to one kind becomes muscle structure Exhaust manifold gasket.

Background technology：

It is applied to adapt to increasingly stringent passenger car discharge and fuel economy regulation, more advanced technologies on engine, such as The technologies such as supercharging, lean burn, the application of these technologies cause engine exhaust temperature and pressure higher and higher, conventional exhaust discrimination Seal of tube gasket, to its heat-resisting and anti-fatigue performance requirement also higher, is particularly being answered under so severe working environment On engine with supercharging technology, problems are particularly evident, and engine can influence the property of engine as leakage problem occurs Can and security reliability, while the exhaust gas without ternary catalyzing unit processing can cause environmental pollution, and conventional exhaust manifold seal Gasket can not meet the seal request of engine at this stage.

The content of the invention：

The utility model is overcomes drawbacks described above, there is provided one kind becomes muscle structure exhaust manifold gasket, according to flange The distribution situation of the bolt connecting hole of connection, by varying the height and width of partially sealed muscle, keeps the screen resilience of sealed muscle, It is set to be fitted closely with two flange faces, so as to effectively improve sealing performance to adapt to the seal request of engine at this stage.

The technical solution adopted in the utility model is：One kind becomes muscle structure exhaust manifold gasket, including sealing advance capital for Body, the sealing pad body are formed by stacking by three-layer sealed pad, and bolt connecting hole is furnished with sealing pad body lower edges punishment, Uniformly it is equipped with multiple perforative air flue holes side by side on sealing pad body, the bolt connecting hole is respectively positioned at each air flue hole Both sides, are equipped with cricoid sealed muscle at the circumferential edge in each air flue hole on sealing pad body, and the sealed muscle includes the One layer of sealed muscle, second layer sealed muscle and the 3rd sealed muscle, first layer sealed muscle 2.1, second layer sealed muscle 2.2 and third layer are close Region of the muscle 2.3 beyond air flue hole is sealed to be fixedly connected, is being equipped with gap, first layer sealing between the two close at air flue hole Muscle is set with second layer sealed muscle mirror symmetry；Third layer sealed muscle and second layer sealed muscle mirror symmetry are set, and positioned at the Two layers of sealed muscle fit at air flue hole with third layer sealed muscle；Every layer of sealed muscle circumferential direction is equipped with height value and width at three It is worth different region, region is the radian A with bolt connecting hole adjacent respectively positioned at sealed muscle at three, in sealed muscle The radian C of heart line both sides, the radian B between radian A and radian C, and each layer sealed muscle is in the height of longitudinal same area Value is identical with width value, and radian A on every layer of sealed muscle, radian B, the height value H relations at radian C are H_B＞ H_C＞ H_A, every layer close It is K to seal radian A on muscle, radian B, the width value K relations at radian C_A＞ K_C＞ K_B。

Preferably, 3 air flue holes are evenly distributed with the sealing pad body, to adapt to common three-cylinder engine.

Preferably, every layer of gasket is connected by spot welding.

Preferably, the formed number of welds of the spot welding connection is identical with the quantity of bolt connecting hole, and solder joint is distributed in By each bolt connecting hole.

The beneficial effects of the utility model are：By joint bolt connecting hole position distribution situation, to around air flue hole not Height and width with position seals muscle carry out different settings, to compressing the height of hypodynamic position increase sealed muscle and subtracting Small sealed muscle width strengthens the screen resilience of sealed muscle, ensures gasket seal performance.

Brief description of the drawings：

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the sectional view of the sealed muscle A-A in Fig. 1；

Wherein：Seal pad body 1, sealed muscle 2, first layer sealed muscle 2.1, second layer sealed muscle 2.2, third layer sealed muscle 2.3rd, bolt connecting hole 3, air flue hole 4.

Embodiment：

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

Embodiment 1

As shown in Figure 1, a kind of of the utility model becomes muscle structure exhaust manifold gasket, including pad body 1 is sealed, it is described Sealing pad body 1 is formed by stacking by three-layer sealed pad, and every layer of gasket is connected by spot welding, what the spot welding connection was formed Number of welds is identical with the quantity of bolt connecting hole 3, and solder joint is distributed in by each bolt connecting hole 3, it is ensured that sealing pad body 1 Intensity requirement.The bolt connecting hole 3 is located at the both sides in each air flue hole 4 respectively, is adapting to few same of 3 quantity of bolt connecting hole When ensure sealing pad body 1 to the stability of two flanged joints.

Bolt connecting hole 3 is furnished with sealing 1 lower edges of pad body punishment, is uniformly equipped with side by side on sealing pad body 1 Multiple perforative air flue holes 4, the circumferential edge in each air flue hole 4 are equipped with cricoid sealed muscle 2, and the sealed muscle 2 includes the One layer of sealed muscle 2.1,2.2 and the 3rd sealed muscle 2.3 of second layer sealed muscle, first layer sealed muscle 2.1, second layer sealed muscle 2.2 With region of the third layer sealed muscle 2.3 beyond air flue hole 4 to be fixedly connected, first layer sealed muscle 2.1 and second layer sealed muscle 2.2 are being equipped with gap close at air flue hole 4 between the two, and first layer sealed muscle 2.1 is set with 2.2 mirror symmetry of second layer sealed muscle Put；Third layer sealed muscle 2.3 is set with 2.2 mirror symmetry of second layer sealed muscle, and positioned at second layer sealed muscle 2.2 in air flue hole Fit at 4 with third layer sealed muscle 2.3.

As shown in Fig. 2, it is located at air flue hole in first layer sealed muscle 2.1, second layer sealed muscle 2.2, third layer sealed muscle 2.3 Around 3, the structure of the sealed muscle 2 of each layer gasket is identical, circumferential direction different zones height value H and width value K on every layer of sealed muscle 2 It is different, but in vertical direction each layer sealed muscle 2 of same area height H values it is identical with width K values, every layer of sealed muscle 2 weeks Height value and the different region of width value at three are equipped with upwards, and region is with being bolted respectively positioned at sealed muscle 2 at three The radian A of 3 adjacent of hole, the radian C of the center line both sides of sealed muscle 2, the radian B between radian A and radian C, therefore Radian A at qualified 2, radian B at 2, all A-A, B- in radian C at 2, i.e. Fig. 2 are shared on cricoid sealed muscle 2 B, C-C regional seals muscle sectional view overall structure is identical.According to the arrangement of bolt connecting hole in Fig. 13, every layer of sealed muscle 2 Upper radian A, radian B, the height value H relations at radian C are H_B＞ H_C＞ H_A, radian A, radian B, radian C on every layer of sealed muscle 2 The width value K relations at place are K_A＞ K_C＞ K_B, the height and width numerical value of sealed muscle 2 are according to 4 surrounding bolt connecting hole of air flue hole 3 quantity and distance is calculated, and the contrast of 2 screen resilience size of sealed muscle is B ＞ C ＞ A, is sealed exhaust manifold using the design Pad is installed between cylinder cap and air discharging manifold flange being capable of effective leakage problem caused by compensation sealing insufficient pressure.

Embodiment 2

Difference from Example 1 is, as shown in Figure 1, being evenly distributed with 3 air flue holes on the sealing pad body 1 3, to adapt to common three-cylinder engine, similarly, 2 or 4 or more air flues can also be uniformly distributed by sealing on pad body 1 Hole 3, to adapt to the engine of different cylinder numbers.

The course of work：

Head exhaust side flange face and exhaust manifold method are installed in use, hole 3 is bolted and will seal pad body 1 Between blue face, since the sealed muscle 2 on sealing pad body 1 has elasticity, two flange faces by bolt after being tightened, sealed muscle 2 are compressed, and by varying the height and width of partially sealed muscle 2, make the height of the hypodynamic position increase sealed muscle 2 of compression simultaneously Reduce 2 width of sealed muscle to strengthen the screen resilience of sealed muscle., can when the exhaust gas after engine combustion is discharged by air flue hole Leakage problem caused by effective compensation sealing insufficient pressure.Due to first layer sealed muscle 2.1 and second layer sealed muscle 2.2, the Gap is equipped between two layers of sealed muscle 2.2 and third layer sealed muscle 2.3, sealing pad body 1 can be made to be produced in expanded by heating Stress be released so that effectively improve sealing pad body 1 antifatigue and heat resistance.

The above, is only the preferable embodiment of the utility model, these embodiments are all based on this Different implementations under utility model general idea, and the scope of protection of the utility model is not limited thereto, it is any ripe Those skilled in the art are known in the technical scope that the utility model discloses, the change or replacement that can be readily occurred in, all It should cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with claims Subject to protection domain.

Claims (4)

1. one kind becomes muscle structure exhaust manifold gasket, including sealing pad body (1), the sealing pad body (1) is close by three layers Packing is formed by stacking, and bolt connecting hole (3) is evenly distributed with sealing pad body (1) lower edges, in sealing pad body (1) Upper to be uniformly equipped with multiple perforative air flue holes (4) side by side, the bolt connecting hole (3) is located at the two of each air flue hole (4) respectively Side, it is characterised in that：Cricoid sealed muscle is equipped with the circumferential edge of each air flue hole (4) on sealing pad body (1) (2), the sealed muscle (2) includes first layer sealed muscle (2.1), second layer sealed muscle (2.2) and the 3rd sealed muscle (2.3), the One layer of sealed muscle (2.1), second layer sealed muscle (2.2) and region of the third layer sealed muscle (2.3) beyond air flue hole (4) are solid Fixed connection, first layer sealed muscle (2.1) are being equipped with gap between the two with second layer sealed muscle (2.2) close to air flue hole (4) place, First layer sealed muscle (2.1) is set with second layer sealed muscle (2.2) mirror symmetry；Third layer sealed muscle (2.3) and the second layer are close Muscle (2.2) mirror symmetry is sealed to set, and positioned at second layer sealed muscle (2.2) at air flue hole (4) place and third layer sealed muscle (2.3) Fit；Every layer of sealed muscle (2) circumferential direction is equipped with the different region of height value and width value at three, and region is respectively at three Positioned at sealed muscle (2) and the radian A, the radian C of the center line both sides of sealed muscle (2), positioned at arc of bolt connecting hole (3) adjacent The radian B between A and radian C is spent, and each layer sealed muscle is identical with width value in the height value of longitudinal same area, every layer of sealing Radian A on muscle, radian B, the height value H relations at radian C are H_B＞ H_C＞ H_A, radian A, radian B, radian C on every layer of sealed muscle The width value K relations at place are K_A＞ K_C＞ K_B。

A kind of 2. change muscle structure exhaust manifold gasket as claimed in claim 1, it is characterised in that：The sealing pad body (1) 3 air flue holes (4) are evenly distributed with.

A kind of 3. change muscle structure exhaust manifold gasket as claimed in claim 2, it is characterised in that：Every layer of gasket passes through Spot welding connects.

A kind of 4. change muscle structure exhaust manifold gasket as claimed in claim 3, it is characterised in that：The spot welding connection institute shape Into number of welds it is identical with the quantity of bolt connecting hole (3), solder joint is distributed in by each bolt connecting hole.