CN101900054B - Engine cylinder cover with hydraulic tappet hole oil channel structures and oil channel machining method - Google Patents
Engine cylinder cover with hydraulic tappet hole oil channel structures and oil channel machining method Download PDFInfo
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- CN101900054B CN101900054B CN2010101516160A CN201010151616A CN101900054B CN 101900054 B CN101900054 B CN 101900054B CN 2010101516160 A CN2010101516160 A CN 2010101516160A CN 201010151616 A CN201010151616 A CN 201010151616A CN 101900054 B CN101900054 B CN 101900054B
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- hydraulic tappet
- hole
- oil
- tappet hole
- oil channel
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Abstract
The invention provides an engine cylinder cover. Hydraulic tappet holes are distributed in the cylinder cover, the lateral surface of each hydraulic tappet hole is machined with an oil feed channel penetrating through each hydraulic tappet hole, and the bottom of each hydraulic tappet hole is respectively machined with an oil drain hole perpendicular to the bottom. The oil drain hole is positioned in the edge of the bottom of each tappet hole, and the orifice of the oil drain oil is provided with a chamfer to ensure the oil drain area. The invention also provides a method for machining hydraulic tappet hole oil channel structures in the engine cylinder cover. The designed cylinder cover structure and the method for machining hydraulic tappet hole oil channel structures can ensure the consistency of oil drain holes and overcome the problem that leakage detection can not be carried out on the hydraulic tappet holes.
Description
Technical field
The present invention relates to engine technology, be specifically related to the hydraulic tappet hole oil channel structures design of cylinder cover of automobile engine.
Background technique
Along with the strictness day by day of automotive regulation and the development of the market demand, engine technology also is showing improvement or progress day by day.Current, hydraulic tappet has obtained general application at the cylinder head distribution device, and its main purpose is to promote motor NVH quality.
The driving mode of hydraulic tappet is mainly hydraulic drive type, links to each other with the hydraulic tappet oil inlet hole so must there be extreme pressure lubricant to pass through oil circuit.Machine oil did not flow out from the draining passage when hydraulic tappet was not worked.Hydraulic tappet is installed in normally that cylinder covers, so hydraulic tappet hole and relevant oil circuit are arranged on the cylinder head.
In the oil circuit scheme of hydraulic tappet hole, the oil inlet passage of hydraulic tappet hole mainly adds formation by machine at present, but the draining passage becomes in the appearance of cylinder head direct casting usually.Referring to Fig. 3; Promptly, the cylinder head blank reserves breach when designing in bottom, tappet hole; Machine adds hydraulic tappet hole 1 and behind the bottom, runs through formation draining hole 3, but because mostly position, cylinder head grease chamber is sand casting process, geomery cannot say for sure to demonstrate,prove; It is irregular to occur the draining hole size easily after machine adds, even the situation that can't connect.The cylinder head oil duct is let out in the inspection simultaneously; Require sealing to comprise all oil ducts import and export of hydraulic tappet hole; And feeding pressurized air carries out leak test; Tappet as shown in the figure hole end face compresses sealing by rubber seal piece 2, and the hydraulic tappet hole bottom is difficult to seal owing to cast draining hole shape, the size irregular that forms.So can't carry out leak test or can only before hydraulic tappet hole processing, carry out leak test.The risk of leakage that hydraulic tappet hole processing rear cylinder lid oil duct exists can't be got rid of.
Summary of the invention
The present invention is directed to the problem of the existence of existing technology; A kind of engine cylinder cover and oil channel machining method with hydraulic tappet hole oil channel structures is provided, forms the problem that draining hole conformity is not easy to guarantee, hydraulic tappet hole can't carry out Leak testtion to solve casting.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
First purpose of the present invention provides a kind of engine cylinder cap; On said cylinder head, be distributed with hydraulic tappet hole; Be added with the oil supply gallery that runs through each hydraulic tappet hole at said each hydraulic tappet hole side machine, machine adds and is formed with perpendicular draining hole respectively in the bottom of each hydraulic tappet hole.
Said draining hole is positioned at tappet hole bottom margin, has chamfering in the aperture in draining hole, to guarantee drainage area.
Another object of the present invention provides and a kind ofly covers the method for processing hydraulic tappet hole oil channel structures at cylinder, and said method step is following:
(1) add the formation oil inlet hole through machine earlier and be connected to each hydraulic tappet hole that cylinder covers, oil inlet hole runs through in each hydraulic tappet hole side, forms oil supply gallery;
(2) then to the import and export of all oil ducts of cylinder head sealing, and feed pressurized air and carry out leak test, hydraulic tappet hole is only needed seal end face through compressing the rubber seal piece;
(3) let out after inspection accomplishes, machine adds the draining hole perpendicular to the bottom surface in the hydraulic tappet hole bottom, and guarantees drainage area through the aperture chamfering.
The cylinder head arrangement of the present invention's design and the method for processing hydraulic tappet hole oil channel structures can guarantee the conformity in draining hole, and overcome the problem that hydraulic tappet hole can't carry out Leak testtion.
Description of drawings
Fig. 1 is the sectional view that casting forms the hydraulic tappet hole in draining hole in the existing technology
Fig. 2 is the plane structure schematic representation of this engine cylinder cap
Fig. 3 is that this cylinder covers the sectional drawing with hydraulic tappet hole site
Fig. 4 is the cutaway view Amplified image of the hydraulic tappet hole that the present invention relates to
Among the figure: 1-hydraulic tappet hole, 2-machine add the draining hole of formation, the draining hole that the 3-casting forms, oil supply gallery, the 5-cylinder head that the 4-machine adds formation
Embodiment
Further specify technology contents of the present invention below in conjunction with accompanying drawing:
The structure of engine cylinder cap is referring to Fig. 1 and Fig. 2, and the zone that A marked among Fig. 1 is the layout area of hydraulic tappet hole and relevant oil circuit.1 is hydraulic tappet hole among Fig. 2.The basic structure of this engine cylinder cap 6 is the same with existing technology; Be distributed with hydraulic tappet hole 1 on it; Visible in conjunction with Fig. 4; Be added with the oil supply gallery 4 that runs through each hydraulic tappet hole at each hydraulic tappet hole 1 side machine, what they were different is, machine adds and forms perpendicular draining hole 2 respectively in the bottom margin position of each hydraulic tappet hole 1.
In the engine operation process, extreme pressure lubricant enters into the oil supply gallery 4 that the bigger machine of diameter adds formation from the main oil gallery of cylinder head 5, gets into hydraulic tappet inner support tappet proper functioning again.The machine oil that leaks between the hole wall of hydraulic tappet hole 1 and the tappet flows to the bottom, and the draining hole 2 that the machine through the bottom adds formation flows into the camshaft grease chambeies, guarantees that the long-pending oil in bottom, tappet hole influences the hydraulic tappet proper functioning.
The course of working of above-mentioned oil circuit: first processing hydraulic tappet hole 1, reprocessing oil supply gallery 4, oil supply gallery 4 runs through from the side of each hydraulic tappet hole 1, and oil supply gallery 4 is positioned at hydraulic tappet hole 1 middle part, and vertical with hydraulic tappet hole 1.Through rubber seal piece sealed hydraulic tappet hole 1 end face, feed pressurized air oil supply gallery 4 and hydraulic tappet hole 1 are carried out leak test then.Let out and add perpendicular to draining hole, bottom surface 2 at hydraulic tappet hole 1 bottom machine after inspection is accomplished, at last to the aperture chamfering in draining hole 2.
Claims (1)
1. one kind covers the method for processing hydraulic tappet hole oil channel structures at cylinder, and said method step is following:
(1) add formation oil inlet hole d through machine earlier and be connected to each hydraulic tappet hole a that cylinder covers, oil inlet hole runs through in each hydraulic tappet hole side, forms oil supply gallery;
(2) then to the import and export of all oil ducts of cylinder head sealing, and feed pressurized air and carry out leak test, hydraulic tappet hole is only needed seal end face through compressing the rubber seal piece;
(3) let out after inspection accomplishes, machine adds the draining hole perpendicular to the bottom surface in the hydraulic tappet hole bottom, and guarantees drainage area through the aperture chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101516160A CN101900054B (en) | 2010-04-20 | 2010-04-20 | Engine cylinder cover with hydraulic tappet hole oil channel structures and oil channel machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101516160A CN101900054B (en) | 2010-04-20 | 2010-04-20 | Engine cylinder cover with hydraulic tappet hole oil channel structures and oil channel machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101900054A CN101900054A (en) | 2010-12-01 |
| CN101900054B true CN101900054B (en) | 2012-02-15 |
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ID=43225892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101516160A Active CN101900054B (en) | 2010-04-20 | 2010-04-20 | Engine cylinder cover with hydraulic tappet hole oil channel structures and oil channel machining method |
Country Status (1)
| Country | Link |
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| CN (1) | CN101900054B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035819A (en) * | 2017-12-04 | 2018-05-15 | 杨程日 | The wide arc gap side through hole of cylinder cover of automobile engine tappet bore |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60256508A (en) * | 1984-05-31 | 1985-12-18 | Suzuki Motor Co Ltd | Oil supply device for hydraulic tappet device |
| JP2583267B2 (en) * | 1988-01-29 | 1997-02-19 | スズキ株式会社 | Rocker arm device for four-cycle engine |
| CN2229519Y (en) * | 1995-09-15 | 1996-06-19 | 北内集团总公司 | Hydraulic valve adapted for controlling air intake shutoff angle |
| CN2523956Y (en) * | 2002-02-27 | 2002-12-04 | 重庆红旗缸头制造有限公司 | Hydraulic tappet oil supplying channel of motorcycle engine head |
| JP4625425B2 (en) * | 2006-05-22 | 2011-02-02 | 本田技研工業株式会社 | Cylinder head oil passage structure |
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2010
- 2010-04-20 CN CN2010101516160A patent/CN101900054B/en active Active
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| Publication number | Publication date |
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| CN101900054A (en) | 2010-12-01 |
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| CB03 | Change of inventor or designer information |
Inventor after: Su Jicai Inventor after: Cheng Weiguo Inventor after: Wei Song Inventor after: Fan Guanghui Inventor after: Liu Bo Inventor after: Zhang Qing Inventor before: Su Jicai Inventor before: Cheng Weiguo Inventor before: Wei Song Inventor before: Fan Guanghui |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SU JICAI CHENG WEIGUO WEI SONG FAN GUANGHUI TO: SU JICAI CHENG WEIGUO WEI SONG FAN GUANGHUI LIU BO ZHANG QING |