CN103670559B - A kind of direct fuel-injection engine camshaft-bearing cap - Google Patents
A kind of direct fuel-injection engine camshaft-bearing cap Download PDFInfo
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- CN103670559B CN103670559B CN201210360250.7A CN201210360250A CN103670559B CN 103670559 B CN103670559 B CN 103670559B CN 201210360250 A CN201210360250 A CN 201210360250A CN 103670559 B CN103670559 B CN 103670559B
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- bearing cap
- sealing surface
- camshaft
- oil pump
- pressure oil
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Abstract
The present invention relates to a kind of direct fuel-injection engine camshaft-bearing cap, including bearing cap body, have on bearing cap body can with its above the arc that fits of valve mechanism cover on sealing surface, the lower sealing surface that can fit with cylinder head below and the rear sealing surface that can fit with the high-pressure oil pump base at its rear, lower sealing surface is provided with the arc-shaped concave suitable with camshaft journal；The left and right sides of described bearing cap body offers the first installing hole along the vertical direction and the second installing hole along the longitudinal direction, offers passage on the rear sealing surface of bearing cap body.When high-pressure oil pump is arranged in the rear end of cylinder cap, ensure that the positive sealing between high-pressure oil pump base and cylinder head, camshaft, valve mechanism cover by this camshaft-bearing cap, make the pressure balance of high-pressure oil pump base intracavity and cylinder head internal system.
Description
Technical field
The present invention relates to a kind of engine part, be specifically related to a kind of direct fuel-injection engine camshaft-bearing cap.
Background technology
High-pressure oil pump on vehicular engine is typically to be arranged in the inlet end of cylinder head, reciprocating by the driving actuated by cams oil pump tappet of high-pressure oil pump, to be continuously engine fuel injector offer high pressure fuel.But owing to the space by enging cabin is limited, then need high-pressure oil pump to be arranged in the rear end of cylinder head.If high-pressure oil pump to be arranged in the rear end of cylinder head, it would be desirable to guarantee being tightly connected between high-pressure oil pump base and cylinder head, camshaft, valve mechanism cover by camshaft-bearing cap, make the pressure balance of high-pressure oil pump base intracavity and cylinder head internal system.But the camshaft-bearing cap on existing vehicular engine is typically to be assemblied in cylinder head, it is served only for camshaft is risen radially position-limiting action, it is impossible to ensure being tightly connected between high-pressure oil pump base and cylinder cap, camshaft, valve mechanism cover.
Summary of the invention
It is an object of the invention to provide a kind of direct fuel-injection engine camshaft-bearing cap, when high-pressure oil pump is arranged in the rear end of cylinder cap, can guarantee that the positive sealing between high-pressure oil pump base and cylinder head, camshaft, valve mechanism cover by this camshaft-bearing cap, make the pressure balance of high-pressure oil pump base intracavity and cylinder head internal system.
Direct fuel-injection engine camshaft-bearing cap of the present invention, including bearing cap body, have on bearing cap body can with its above the arc that fits of valve mechanism cover on sealing surface, the lower sealing surface that can fit with cylinder head below and the rear sealing surface that can fit with the high-pressure oil pump base at its rear, lower sealing surface is provided with the arc-shaped concave suitable with camshaft journal；The left and right sides of described bearing cap body offers the first installing hole along the vertical direction and the second installing hole along the longitudinal direction, offers passage on the rear sealing surface of bearing cap body.
The lower sealing surface of bearing cap body offers along the longitudinal direction two every glue groove, two lay respectively at the left and right sides of described arc-shaped concave and near this arc-shaped concave every glue groove.
By the first installing hole bolt on bearing cap body, this bearing cap is fixed with cylinder head, by the second installing hole bolt on bearing cap body, this bearing cap is fixed with high-pressure oil pump base, simultaneously, the rear sealing surface of bearing cap is sealed by sealing gasket with high-pressure oil pump base, the upper sealing surface of bearing cap is sealed by cylinder head cover sealing gasket with valve mechanism cover, the lower sealing surface of bearing cap and cylinder head are by sealant sealing, thus realize the positive sealing between high-pressure oil pump base and cylinder head, camshaft, valve mechanism cover.
The effect of passage is to connect internal to high-pressure oil pump base intracavity and cylinder head.
Effect every glue groove is to avoid unnecessary fluid sealant to flow on bearing cap arc-shaped concave and camshaft, hinders the motion of camshaft.
Direct fuel-injection engine camshaft-bearing cap of the present invention has the arc-shaped concave that the lower sealing surface that the rear sealing surface with high-pressure oil pump base engagement coordinates coordinates with camshaft and the upper sealing surface coordinated with valve mechanism cover with cylinder head, when high-pressure oil pump is arranged in the rear end of cylinder cap, camshaft is not only played radially position-limiting action by this camshaft-bearing cap, also can ensure that being tightly connected between high-pressure oil pump base and cylinder head, camshaft, valve mechanism cover, it is ensured that high-pressure oil pump base intracavity and the pressure balance of cylinder head internal system.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of direct fuel-injection engine camshaft-bearing cap of the present invention；
Fig. 2 is the A direction view of Fig. 1；
Fig. 3 is the rearview of Fig. 1；
Fig. 4 is direct fuel-injection engine camshaft-bearing cap of the present invention and cylinder head, high-pressure oil pump base, camshaft and the assembling schematic diagram of valve mechanism cover.
Detailed description of the invention
In conjunction with accompanying drawing, the present invention is described in further detail:
Direct fuel-injection engine camshaft-bearing cap as shown in Figure 1 to Figure 3, including bearing cap body, have on bearing cap body can with its above the arc that fits of valve mechanism cover 2 on sealing surface 1.3, the lower sealing surface 1.6 that can fit with cylinder head 5 below and the rear sealing surface 1.5 that can fit with the high-pressure oil pump base 3 at its rear, lower sealing surface 1.6 is provided with the arc-shaped concave 1.7 suitable with camshaft 4 axle journal；The left and right sides of described bearing cap body offers the first installing hole 1.2 along the vertical direction and the second installing hole 1.1 along the longitudinal direction.
As shown in Figures 2 and 3, the rear sealing surface 1.5 of bearing cap body offers passage 1.4, the passage 1.4 inner chamber by described cylinder head 5 and the inner space of high-pressure oil pump base 3.Passage 1.4 is for ensureing that high-pressure oil pump base 3 inner chamber keeps balance with the air pressure of cylinder head 5 inner chamber, air unnecessary in high-pressure oil pump base 3 can flow in cylinder head 5 by passage 1.4, cylinder head 5 is flowed out again by triton system, also by passage 1.4, air can be supplemented in high-pressure oil pump base 3, make air pressure inside reach balance, reduce the frequency that sealing gasket damages.
As shown in Figures 2 and 3, the lower sealing surface 1.6 of bearing cap body offers along the longitudinal direction two every glue groove 1.8, two lay respectively at the left and right sides of described arc-shaped concave 1.7 and near this arc-shaped concave 1.7 every glue groove 1.8.Sealing owing to the place of cooperation of bearing cap 1 with cylinder head 5 needs to apply fluid sealant, after fastening bolt, fluid sealant may flow on arc-shaped concave 1.7 and the camshaft 4 of bearing cap 1, hinders the motion of camshaft 4.Unnecessary fluid sealant can be avoided to flow on arc-shaped concave 1.7 and the camshaft 4 of bearing cap 1 every glue groove 1.8.
As shown in Figure 4, this bearing cap 1 is fixed with cylinder head 5 with bolt by the first installing hole 1.2 on bearing cap body, this bearing cap 1 is fixed with high-pressure oil pump base 3 with bolt by the second installing hole 1.1 on bearing cap body, simultaneously, the rear sealing surface 1.5 of bearing cap 1 is sealed by sealing gasket with high-pressure oil pump base 3, the upper sealing surface 1.3 of bearing cap 1 is sealed by cylinder head cover sealing gasket with valve mechanism cover 2, and lower sealing surface 1.6 and the cylinder head 5 of bearing cap 1 pass through sealant sealing.
Claims (1)
1. a direct fuel-injection engine camshaft-bearing cap, including bearing cap body, it is characterized in that: have on bearing cap body can with its above the arc that fits of valve mechanism cover (2) on sealing surface (1.3), the lower sealing surface (1.6) that can fit with cylinder head (5) below and the rear sealing surface (1.5) that can fit with the high-pressure oil pump base (3) at its rear, lower sealing surface is provided with the arc-shaped concave (1.7) suitable with camshaft (4) axle journal；The left and right sides of described bearing cap body offers the first installing hole (1.2) along the vertical direction and the second installing hole (1.1) along the longitudinal direction, offers passage (1.4) on the rear sealing surface (1.5) of bearing cap body；
The lower sealing surface (1.6) of bearing cap body offers along the longitudinal direction two every glue groove (1.8), two lay respectively at the left and right sides of described arc-shaped concave (1.7) and near this arc-shaped concave every glue groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210360250.7A CN103670559B (en) | 2012-09-25 | 2012-09-25 | A kind of direct fuel-injection engine camshaft-bearing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210360250.7A CN103670559B (en) | 2012-09-25 | 2012-09-25 | A kind of direct fuel-injection engine camshaft-bearing cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670559A CN103670559A (en) | 2014-03-26 |
| CN103670559B true CN103670559B (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210360250.7A Active CN103670559B (en) | 2012-09-25 | 2012-09-25 | A kind of direct fuel-injection engine camshaft-bearing cap |
Country Status (1)
| Country | Link |
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| CN (1) | CN103670559B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481626B (en) * | 2014-11-28 | 2017-04-19 | 长城汽车股份有限公司 | Valve mechanism for engine, engine with the same and vehicle |
| CN106224120B (en) * | 2016-09-13 | 2019-01-01 | 奇瑞汽车股份有限公司 | The sealing structure of valve chamber cover |
| CN112431682B (en) * | 2020-10-21 | 2024-04-05 | 广西玉柴机器股份有限公司 | Cylinder cover with increased glue storage groove structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6245912A (en) * | 1985-08-21 | 1987-02-27 | Honda Motor Co Ltd | Oil feeding device for hydraulic tappet of internal combustion engine |
| JPH0481506A (en) * | 1990-07-20 | 1992-03-16 | Toyota Motor Corp | Variable valve timing mechanism |
| CN101113697A (en) * | 2007-08-28 | 2008-01-30 | 奇瑞汽车有限公司 | Car engine camshaft bearing cap |
| CN101196127A (en) * | 2006-12-06 | 2008-06-11 | 奇瑞汽车有限公司 | Camshaft bearing cover of engine |
| CN101482044A (en) * | 2008-12-22 | 2009-07-15 | 奇瑞汽车股份有限公司 | Engine camshaft bearing cover |
-
2012
- 2012-09-25 CN CN201210360250.7A patent/CN103670559B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6245912A (en) * | 1985-08-21 | 1987-02-27 | Honda Motor Co Ltd | Oil feeding device for hydraulic tappet of internal combustion engine |
| JPH0481506A (en) * | 1990-07-20 | 1992-03-16 | Toyota Motor Corp | Variable valve timing mechanism |
| CN101196127A (en) * | 2006-12-06 | 2008-06-11 | 奇瑞汽车有限公司 | Camshaft bearing cover of engine |
| CN101113697A (en) * | 2007-08-28 | 2008-01-30 | 奇瑞汽车有限公司 | Car engine camshaft bearing cap |
| CN101482044A (en) * | 2008-12-22 | 2009-07-15 | 奇瑞汽车股份有限公司 | Engine camshaft bearing cover |
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| Publication number | Publication date |
|---|---|
| CN103670559A (en) | 2014-03-26 |
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