CN203223282U - Exhaust flange structure of cylinder cover - Google Patents
Exhaust flange structure of cylinder cover Download PDFInfo
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- CN203223282U CN203223282U CN 201320116960 CN201320116960U CN203223282U CN 203223282 U CN203223282 U CN 203223282U CN 201320116960 CN201320116960 CN 201320116960 CN 201320116960 U CN201320116960 U CN 201320116960U CN 203223282 U CN203223282 U CN 203223282U
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- cylinder
- pipe arrangement
- hole
- vent
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model aims to provide an exhaust flange structure of a cylinder cover, which contributes to realizing light weight under the condition of ensuring the sealing property between the exhaust flange structure and an exhaust manifold. According to the exhaust flange structure of the cylinder cover provided by the utility model, a pipe through hole (5) through which an exhaust recirculation pipe passes and of which the opening is larger than the pipe diameter is formed, the edge (5a) of one side, which is opposite to a cylinder exhaust hole (4), of the pipe through hole (5) is formed at a position which is D1 (27+/-1 millimeters) away from the center of the cylinder exhaust hole (4), so that a circular arc of which the radius is the specified distance D1 away from the center of the cylinder exhaust hole (4) is formed.
Description
Technical field
The utility model relates to a kind of exhaust flange structure of cylinder cap.
Background technique
In the internal-combustion engine (motor) of vehicle, be connected with to discharge the exhaust passage (gas exhaust manifold) (for example, with reference to patent documentation 1) from the exhaust of firing chamber.Gas exhaust manifold has the arm corresponding with cylinder number, and is that the arm of the corresponding gas exhaust manifold of flange part (flanged surface) is formed with cylinder vent at the assembly department of motor (cylinder cap).
In addition, adjust the position of arm according to cylinder vent, and gas exhaust manifold is connected the flange part (flanged surface) of cylinder cap by sealing gasket.
In recent years, motor car engine more and more is required lightweight.Wall thickness by reducing parts such as engine cylinder cover etc., and the area at joining portion that reduces and comprise other part of gas exhaust manifold can realize the lightweight of motor.Yet the wall thickness etc. that reduces part can reduce the rigidity of part, and, for example reduce the bonding area with other parts such as gas exhaust manifold, can reduce the sealability of exhaust.
[patent documentation 1] Japanese documentation spy opens flat 9-296733 communique
Model utility technical problem to be solved
The utility model is In view of the foregoing finished, and its purpose is to provide a kind of exhaust flange structure of cylinder cap, its can guarantee and gas exhaust manifold between realize lightweight under the state of sealing.
The model utility content
In order to achieve the above object, the exhaust flange structure of cylinder cap of the present utility model, it is formed on the end face of exhaust passage of 3 cylinder IC engine cylinder caps, and engage with the attachment face of gas exhaust manifold side, it is characterized in that, possess: cylinder vent, it is corresponding with cylinder number equidistantly to be formed at 3 places; The pipe arrangement through hole, the above-mentioned cylinder vent of itself and end is adjacent and form, it is big with pipe arrangement and the above-mentioned pipe arrangement diameter of aperture efficiency to run through exhaust gas recirculatioon, and a side relative with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole, be configured on the position of the centergage set a distance of above-mentioned cylinder vent, and form and concentric circular-arc of above-mentioned cylinder vent.
In the utility model, by possess opening diameter than exhaust gas recirculatioon with the big pipe arrangement through hole of pipe arrangement, can alleviate the weight of the pipe arrangement throughhole portions that big opening is set, realize lightweight, and a side relative with cylinder vent of pipe arrangement through hole is to form in the position from the centergage set a distance of cylinder vent and concentric circular-arc of cylinder vent, therefore can guarantee sealing area by sealing gasket.
Therefore, can guarantee and gas exhaust manifold between the state of sealing under realize lightweight.
In the utility model, below above-mentioned cylinder vent, in the scope that comprises with the concentric circular arc part of above-mentioned cylinder vent, be formed with weight portion, and between above-mentioned cylinder vent, on the position of the centergage set a distance of each above-mentioned cylinder vent, can be formed with open pore.
In this case, can alleviate in the scope that comprises with the concentric circular arc part of cylinder vent the weight of going to weight portion and in the weight from the locational open pore of the centergage set a distance of cylinder vent, realize lightweight.
In the utility model, the outside of above-mentioned pipe arrangement through hole and do not form above-mentioned pipe arrangement through hole one side above-mentioned cylinder vent below, can be formed with the joining portion that engages with the attachment face of above-mentioned gas exhaust manifold side.
In this case, below the tip side cylinder vent, be formed with the joining portion that engages with the attachment face of gas exhaust manifold side, therefore can guarantee sealing by improving the joint rigidity.
In the utility model, be formed with the oil duct that extends along the direction of cylinder, and the degree of depth of above-mentioned open pore be to the distance of the adjacent position of above-mentioned oil duct.
In the utility model, the afore mentioned rules distance that disposes above-mentioned pipe arrangement through hole is 27mm ± 1mm, the radius of curvature in the bight, top of a side relative with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole is 3mm ± 0.1mm, the radius of curvature in bight, below is 8mm ± 0.1mm, and above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent form and about equally circular-arc of above-mentioned pipe arrangement diameter.
In the utility model, distance between the center at above-mentioned joining portion is 266mm ± 1mm, distance to above-mentioned cylinder vent center below above-mentioned cylinder cap is 30mm ± 1mm, distance to the circular-arc center of arc of above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent below above-mentioned cylinder cap is 26mm ± 1mm, and the distance to above-mentioned exhaust flange upper end below above-mentioned cylinder cap is 66mm ± 1mm.
In this case, can stipulate exactly not only to guarantee sealing but also can realize light-weighted shape.
The model utility effect
The exhaust flange structure of cylinder cap of the present utility model, can guarantee and gas exhaust manifold between the state of sealing under realize lightweight.
Description of drawings
Fig. 1 is the cylinder cap outline drawing of an explanation embodiment's of the present utility model exhaust flange structure.
Fig. 2 is the side view of cylinder cap.
Fig. 3 is the critical piece outline drawing.
Fig. 4 is the cylinder cap side view that the flange arrangement size is described.
Fig. 5 is along the sectional view of V-V line among Fig. 2.
Symbol description
1 internal-combustion engine (motor)
2 cylinder caps
3 exhaust flanges
4 cylinder vents
5 pipe arrangement through holes
5a pipe arrangement through hole edge
Bight, top, 5b edge
Bight, below, 5c edge
The relative side margin with cylinder vent of 5d
6 go to weight portion
6a goes to weight portion
6b goes to weight portion
6c goes to weight portion
7 open pores
The 7a open pore
The 7b open pore
8 oil ducts
11 assembly departments (bolt hole)
The D1 distance
The X distance
The h1 width
The h2 width
The H1 height
The H2 height
The H3 height
The R1 radius of curvature
The R2 radius of curvature
The R3 radius of curvature
The S1 circular arc part
The S2 circular arc part
The S3 circular arc part
The S4 circular arc part
Embodiment
Fig. 1 is the cylinder cap outline drawing that an embodiment's of the present utility model exhaust flange structure is described; Fig. 2 is the cylinder cap side view of representing the mating face front view for the exhaust flange structure is described; Fig. 3 is that expression runs through the detail drawing that the pipe arrangement through hole situation of pipe arrangement (EGR pipe) is used in exhaust gas recirculatioon; Fig. 4 is the cylinder cap side view (corresponding with Fig. 2) of size that each constituent part of flange arrangement is described; The cross sectional view along the V-V line in Fig. 5 presentation graphs 2.
As shown in Figure 1, have cylinder cap 2 at 3 cylinder IC engines (motor) 1, end face is provided with exhaust flange 3 in the exhaust passage of cylinder cap 2.Exhaust flange 3 engages with the attachment face of gas exhaust manifold side.
As Fig. 2, shown in Figure 4, be provided with cylinder vent 4 at the exhaust flange 3 of cylinder cap 2, and cylinder vent 4 is corresponding with cylinder number equidistantly to be formed at 3 places.The radius r of cylinder vent 4 is set to 14mm ± 1mm, and the distance between centers X of cylinder vent 4 is set to 83mm ± 1mm.In addition, be set to 30mm ± 1mm from the height H 1 at lower end to the center of cylinder vent 4 of exhaust flange 3, and be set to 66mm ± 1mm from the height H 2 of lower end to the upper end of exhaust flange 3.
Gas exhaust manifold engages with exhaust flange 3 by not shown sealing gasket, thereby the arm (outlet pipe) of gas exhaust manifold is connected with cylinder vent 4.
As Fig. 2, Fig. 3, shown in Figure 4, with the adjacent exhaust flange 3 of the cylinder vent 4 of end (left part among the figure) in be formed with pipe arrangement through hole 5, and exhaust gas recirculatioon is that the EGR pipe runs through pipe arrangement through hole 5 with pipe arrangement.The diameter of the aperture efficiency EGR pipe of pipe arrangement through hole 5 is big, is located at centergage set a distance D1 from cylinder vent 4 (on the position of 27mm ± 1mm) with the position of the edge 5a of cylinder vent 4 relative sides.
The shape of the edge 5a of pipe arrangement through hole 5 is and concentric circular-arc of cylinder vent 4 that namely the centergage set a distance D1 with distance cylinder vent 4 is the circular-arc of radius.In addition, the radius of curvature R 1 of bight, the top 5b of the edge 5a of pipe arrangement through hole 5 is 3mm ± 0.1mm, and the radius of curvature R 2 of bight, below 5c is 8mm ± 0.1mm.In addition, be not 8mm ± 0.1mm with the radius of curvature R 3 of the edge 5d of cylinder vent 4 relative sides.
From the lower end of exhaust flange 3 to not being set to 26mm ± 1mm with the height H 3 at the center of the radius of curvature R 3 of the edge 5d of cylinder vent 4 relative sides.
The exhaust flange 3 of cylinder cap 2 has opening diameter than the big pipe arrangement through hole 5 of EGR pipe, therefore can alleviate the weight of the part that is provided with big opening pipe arrangement through hole 5, and can also realize the lightweight of cylinder cap 2.In addition, the edge 5a of pipe arrangement through hole 5 is formed on the position of the centergage set a distance D1 of cylinder vent 4, and forms and concentric circular-arc of cylinder vent 4, therefore can guarantee sealing area by sealing gasket.
As Fig. 2, shown in Figure 4, in the exhaust flange 3 of the below of the cylinder vent 4 of end (left part among the figure), in the scope that comprises the circular arc part concentric with cylinder vent 4 (be the circular-arc position of radius with predetermined distance D1) S1, be formed with the 6a of weight portion.In addition, in the exhaust flange 3 below central cylinder vent 4, in the scope that comprises the circular arc part concentric with cylinder vent 4 (be the circular-arc position of radius with predetermined distance D1) S2, be formed with the 6b of weight portion.
In addition, below in central cylinder vent 4 and figure between the cylinder vent 4 of right part in the exhaust flange 3, comprise the circular arc part concentric with central cylinder vent 4 (be the circular-arc position of radius with predetermined distance D1) S3, with figure in the scope of the concentric circular arc part of the cylinder vent 4 of right part (be the circular-arc position of radius with predetermined distance D1) S4, be formed with the 6c of weight portion.
On the other hand, be formed with open pore 7a at the cylinder vent 4 of end (left part among the figure) and the exhaust flange 3 between the central cylinder vent 4, and in central cylinder vent 4 and figure, be formed with open pore 7b in the exhaust flange 3 between the cylinder vent 4 of right part. Open pore 7a, 7b are formed on the position of the centergage set a distance D1 of cylinder vent 4.
The width h1 of 3 upper limb is set to 3mm ± 0.1mm from open pore 7a, 7b to exhaust flange, and is set to 3mm ± 0.1mm respectively from open pore 7a to the width h2 that removes the 6b of weight portion and from open pore 7b to the width h2 that removes the 6c of weight portion.
As shown in Figure 5, be formed with the oil duct 8 that extends along cylinder direction (with paper orthogonal direction among the figure) at cylinder cap 2; As Fig. 2, shown in Figure 5, open pore 7a, 7b to the distance (degree of depth) of depth direction bottom be to the distance of the adjacent position of oil duct 8.
On the exhaust flange 3 of cylinder cap 2, in the scope that comprises circular arc part S1, the S2 concentric with cylinder vent 4, S3, S4, be provided with the 6a of weight portion, 6b, 6c, be positioned at and oil duct 8 open pore 7a, the 7b that the ortho position puts that join and be provided with the bottom in the position from the centergage set a distance D1 of cylinder vent 4, therefore the weight of the 6a of weight portion, 6b, 6c part and the weight of open pore 7a, 7b part can be alleviated, but also the lightweight of cylinder cap 2 can be realized.
As Fig. 2, shown in Figure 4, on the exhaust flange 3 of cylinder cap 2, the assembly department (bolt hole) 11 when being formed with the mating face that engages gas exhaust manifold.Namely, the outside (right side among the figure) of the cylinder vent 4 of right part is provided with assembly department 11 between the cylinder vent 4 and central cylinder vent 4 of the outside (left side among the figure) of the pipe arrangement through hole 5 of exhaust flange 3 lower edges, end (left part among the figure), among the figure.
In addition, between the cylinder vent 4 of right part, be provided with assembly department 11 above the pipe arrangement through hole 5 of the upper limb of exhaust flange 3 and among central cylinder vent 4 and the figure.Assembly department 11 with cylinder side by side on the direction, be staggered to form at upper limb and the lower edge of exhaust flange 3.
In addition, the distance L 1 between the assembly department 11 at the two ends, the left and right sides of exhaust flange 3 lower edges is set to 266mm ± 1mm.In addition, the distance L 2 at the center of the cylinder vent 4 of (left part the figure) to radius of curvature R 3 centers of the edge 5d of pipe arrangement through hole 5 is set to 49mm ± 1mm from the end.
The structure of the exhaust flange 3 by above-mentioned cylinder cap 2 can be stipulated not only to guarantee sealing but also realize light-weighted shape exactly, but also can guarantee and gas exhaust manifold between the state of sealing under realize lightweight.
Industrial utilizability
The utility model can be applicable to the industrial field of cylinder cap exhaust flange structure.
Claims (9)
1. the exhaust flange structure of a cylinder cap, it is formed on the end face of exhaust passage of 3 cylinder IC engine cylinder caps, and engages with the attachment face of gas exhaust manifold side, it is characterized in that possessing:
Cylinder vent, it is corresponding with cylinder number equidistantly to be formed at 3 places;
The pipe arrangement through hole, the above-mentioned cylinder vent of itself and end is adjacent and form, and exhaust gas recirculatioon is big with the diameter that pipe arrangement runs through itself and the above-mentioned pipe arrangement of aperture efficiency,
A side relative with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole is arranged on the position of the centergage set a distance of above-mentioned cylinder vent, and forms and concentric circular-arc of above-mentioned cylinder vent.
2. the exhaust flange structure of cylinder cap according to claim 1 is characterized in that,
Below above-mentioned cylinder vent, in the scope that comprises with the concentric circular arc part of above-mentioned cylinder vent, be formed with weight portion,
Between above-mentioned cylinder vent, be formed with open pore in the position from the centergage set a distance of each above-mentioned cylinder vent.
3. the exhaust flange structure of cylinder cap according to claim 2 is characterized in that,
The outside of above-mentioned pipe arrangement through hole and do not form above-mentioned pipe arrangement through hole one side above-mentioned cylinder vent below, be formed with to engage the joining portion of the attachment face of above-mentioned gas exhaust manifold side.
4. according to the exhaust flange structure of claim 2 or the described cylinder cap of claim 3, it is characterized in that,
Wherein be formed with the oil duct that extends along the cylinder direction,
The degree of depth of above-mentioned open pore be to the distance of above-mentioned oil duct adjoining position.
5. the exhaust flange structure of cylinder cap according to claim 1 is characterized in that,
The afore mentioned rules distance that disposes above-mentioned pipe arrangement through hole is 27mm ± 1mm,
The radius of curvature in the bight, top of a relative side with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole is 3mm ± 0.1mm, and the radius of curvature in bight, below is 8mm ± 0.1mm,
Above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent form and about equally circular-arc of above-mentioned pipe arrangement diameter.
6. the exhaust flange structure of cylinder cap according to claim 2 is characterized in that,
The afore mentioned rules distance that disposes above-mentioned pipe arrangement through hole is 27mm ± 1mm,
The radius of curvature in the bight, top of a relative side with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole is 3mm ± 0.1mm, and the radius of curvature in bight, below is 8mm ± 0.1mm,
Above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent form and about equally circular-arc of above-mentioned pipe arrangement diameter.
7. the exhaust flange structure of cylinder cap according to claim 3 is characterized in that,
The afore mentioned rules distance that disposes above-mentioned pipe arrangement through hole is 27mm ± 1mm,
The radius of curvature in the bight, top of a relative side with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole is 3mm ± 0.1mm, and the radius of curvature in bight, below is 8mm ± 0.1mm,
Above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent form and about equally circular-arc of above-mentioned pipe arrangement diameter.
8. the exhaust flange structure of cylinder cap according to claim 4 is characterized in that,
The afore mentioned rules distance that disposes above-mentioned pipe arrangement through hole is 27mm ± 1mm,
The radius of curvature in the bight, top of a relative side with above-mentioned cylinder vent of above-mentioned pipe arrangement through hole is 3mm ± 0.1mm, and the radius of curvature in bight, below is 8mm ± 0.1mm,
Above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent form and about equally circular-arc of above-mentioned pipe arrangement diameter.
9. according to the exhaust flange structure of claim 5 to any described cylinder cap of claim 8, it is characterized in that,
The distance between centers at above-mentioned joining portion is 266mm ± 1mm,
Extremely the distance at the center of above-mentioned cylinder vent is 30mm ± 1mm below above-mentioned cylinder cap,
Distance to the circular-arc center of arc of above-mentioned pipe arrangement through hole and opposition side above-mentioned cylinder vent below above-mentioned cylinder cap is 26mm ± 1mm,
Distance to above-mentioned exhaust flange upper end below above-mentioned cylinder cap is 66mm ± 1mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012072578 | 2012-03-27 | ||
| JP2012072578A JP2013204470A (en) | 2012-03-27 | 2012-03-27 | Exhaust flange structure of cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223282U true CN203223282U (en) | 2013-10-02 |
Family
ID=49250287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320116960 Expired - Lifetime CN203223282U (en) | 2012-03-27 | 2013-03-14 | Exhaust flange structure of cylinder cover |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013204470A (en) |
| CN (1) | CN203223282U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564401A (en) * | 2015-01-16 | 2015-04-29 | 阿尔特汽车技术股份有限公司 | Integrated exhaust manifold type three-cylinder machine cylinder cover |
-
2012
- 2012-03-27 JP JP2012072578A patent/JP2013204470A/en active Pending
-
2013
- 2013-03-14 CN CN 201320116960 patent/CN203223282U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013204470A (en) | 2013-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Tokyo, Japan Patentee after: Mitsubishi Jidosha Kogyo Kabushiki Kaisha Address before: Japan Tokyo port, 33 No. 8 Chicago Patentee before: Mitsubishi Jidosha Kogyo Kabushiki Kaisha |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131002 |
|
| CX01 | Expiry of patent term |