CN201666194U - VVT engine cylinder cover lubricating oil path - Google Patents
VVT engine cylinder cover lubricating oil path Download PDFInfo
- Publication number
- CN201666194U CN201666194U CN2009202073675U CN200920207367U CN201666194U CN 201666194 U CN201666194 U CN 201666194U CN 2009202073675 U CN2009202073675 U CN 2009202073675U CN 200920207367 U CN200920207367 U CN 200920207367U CN 201666194 U CN201666194 U CN 201666194U
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- oil path
- vvt
- oil circuit
- solenoid valve
- special
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- Expired - Fee Related
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a VVT engine cylinder cover lubricating oil path which is distributed in an engine cylinder cover, the lubricating oil path is composed of a main oil path, a VVT solenoid valve oil path and a lubricating special oil path, one end of the main oil path is connected with the high-pressure oil path of the cylinder body, and the other end thereof is divided into two oil paths in the cylinder cover, including one VVT solenoid valve oil path communicated with a VVT solenoid valve and a lubricating special oil path which is communicated with a cam shaft chamber of the cylinder cover; the diameter of the main oil path is more than or equal to the diameter of the VVT solenoid valve oil path, the diameter of the lubricating special oil path is less than that of the main oil path and the VVT solenoid valve oil path; in addition, an oil limitation plug screw is arranged in the lubricating special oil path for limiting the oil quantity to the lubricating special oil path; in the lubricating oil path, the responding speed of the VVT device and the lubrication are not interfered mutually, the pipeline quantity can be reduced, the design difficulty is reduced and the mechanical processing cost is reduced.
Description
Technical field
The utility model relates to the lubricating oil way of automobile engine placement technique.
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, VVT (Variable Valve Time) device has obtained general application, comprises that air inlet is variable, exhaust variable and intake and exhaust are simultaneously variable, and its main purpose is to improve power performance and fuel economy.
That the driving mode of VVT device mainly contains is spiral, hydraulic drive type and motor-driven etc., and wherein hydraulic drive type accounts for dominant position.Hydraulic drive type is to drive the VVT device by electromagnetic valve engine high pressure lubricant oil, so must there be extreme pressure lubricant to be communicated with by the solenoid valve of oil circuit with the VVT device.VVT device and solenoid valve are installed in normally that cylinder covers, so these oil circuits are arranged on the cylinder head.
In the current oil circuit scheme, often that the lubricating oil path of the oil circuit of VVT device and cylinder head is arranged apart, promptly be communicated to the extreme pressure lubricant of cylinder block respectively, avoid both phase mutual interference, influence the speed of response of VVT device and the lubricating function of cylinder head.But this scheme can cause oil circuit to take up space greatly, and difficult arrangement, and meeting increase number of tubes arranged apart have also just increased the machining cost.
Summary of the invention
The utility model provides a kind of VVT lubrication oil path for cylinder cover of engine, successfully solves the contradiction of performance and design difficulty, processing cost.
In order to solve the problems of the technologies described above, the technological scheme that the utility model is implemented is as follows:
A kind of lubrication oil path for cylinder cover of engine, described lubricating oil path is arranged in the engine cylinder cover, described lubricating oil path is made of working connection, VVT solenoid valve oil circuit and lubricated special-purpose oil circuit, described working connection one end is connected with the high-pressure oil passage of cylinder block, the other end is divided into two oil circuits in cylinder head, the one tunnel is VVT solenoid valve oil circuit, is communicated with the VVT solenoid valve, another road is lubricated special-purpose oil circuit, leads to the camshaft chest that leads to cylinder head in the cylinder block; The diameter of described working connection is more than or equal to VVT solenoid valve oil circuit diameter, and the diameter person of lubricated special-purpose oil circuit is little than the above two.
Because lubricant oil is to divide two-way to be communicated with VVT solenoid valve and camshaft chest respectively from cylinder block through the cylinder head working connection in the utility model, rather than directly be communicated with VVT solenoid valve and camshaft chest respectively, so at least, can reduce an extreme pressure lubricant export pipeline on the cylinder block and an extreme pressure lubricant inlet ductwork on the cylinder head, having reduced lubricating oil pipeline takes up space on cylinder head, can reduce the design difficulty of motor thus, reduce the machining cost simultaneously.
Simultaneously, because the utility model only needs a working connection in cylinder head, just can design the diameter of working connection bigger relatively, larger-diameter like this working connection has just formed a space that volume is bigger, a similar pressure stabilizing cavity, the pressure surge of oil circuit in the time of can being suppressed at VVT device intermittent work, both guaranteed the demand of VVT device to hydraulic coupling, be unlikely to again the lubricant oil supply of friction pair on the cylinder head is produced a very large impact, so the speed of response of VVT device and lubricating function are taken into account.
And in two branch oil circuits, the need oil mass of VVT solenoid valve is far longer than the required oil mass of relevant friction lubricatings such as camshaft, therefore in order to guarantee stable fuel feeding, the diameter of VVT solenoid valve oil circuit can be done greatly as far as possible, and the diameter that will lubricate special-purpose oil circuit is done little as far as possible to the VVT solenoid valve.But in actual machining, the more little just bad more processing of oil circuit diameter, but lubricated special-purpose oil circuit diameter is big, can influence the fuel delivery of VVT solenoid valve oil circuit again.In order to solve this contradiction, the utility model further is provided with a limit whelk plug in described lubricated special-purpose oil circuit, be used to limit the oil mass of leading to lubricated special-purpose oil circuit, so just can not will oil circuit process too for a short time.Described limit whelk plug adds pilot hole from the machine that lubricates special-purpose oil circuit and puts in the lubricated special-purpose oil circuit, and outer end and machine add pilot hole by screw fit, machine is added pilot hole stop up.The above-mentioned structure that design limit whelk is filled in lubricated special-purpose oil circuit, both can rationally control oil mass and guarantee that friction pair had enough extreme pressure lubricants, and can also make lubricated special-purpose oil circuit diameter be unlikely to too for a short time and cause machining difficulty, manufacturing efficiency to reduce and the cost rising.
In sum, the utility model can be little to the prerequisite of the effective fuel feeding of friction pair of VVT device and motor in assurance, both can guarantee VVT device speed of response and lubricated non-interference, can reduce pipeline quantity again, reduce the machining difficulty, enhance productivity, reduce production costs.
Description of drawings
Fig. 1 is the schematic cross-sectional view of this lubrication oil path for cylinder cover of engine layout in cylinder head,
Among the figure: 1-cylinder head, 11-working connection, 12-VVT solenoid valve oil circuit, 13-VVT solenoid valve mounting hole, the lubricated special-purpose oil circuit of 14-, 15-machining plug-hole, 2-limit whelk plug
Embodiment
Describe structure of the present utility model in detail below in conjunction with accompanying drawing:
In structure shown in Figure 1, extreme pressure lubricant enters cylinder head 1 from cylinder block, at first enter into the bigger working connection of diameter 11, working connection 11 is divided into two oil circuits again, one the tunnel is VVT solenoid valve oil circuit 12, connects working connection 11 and VVT solenoid valve mounting hole 13, and another road is lubricated special-purpose oil circuit 14, lubricant oil is sent to the camshaft chest that reaches towards cylinder head by lubricated special-purpose oil circuit 14, and the friction pairs such as camshaft bearing of motor are lubricated.Wherein, the diameter of working connection 11 and VVT solenoid valve oil circuit 12 roughly quite or the former be slightly larger than the latter.Lubricated special-purpose oil circuit 14 diameter minimums, and a limit whelk plug 2 is set in lubricated special-purpose oil circuit 14, by reducing the oil mass that lubricated special-purpose oil circuit is led in the restriction of oil circuit sectional area.Limit whelk plug 2 machines from lubricated special-purpose oil circuit 14 add pilot hole 15 (needs when this hole is the processing oil circuit) and put in and lubricate in the special-purpose oil circuit, outer end and machine add pilot hole and pass through screw fit, machine is added pilot hole stop up, promptly limit the outer end of whelk plug 2 to play ponding simultaneously again.
Claims (2)
1. VVT lubrication oil path for cylinder cover of engine, described lubricating oil path is arranged in the engine cylinder cover, it is characterized in that: described lubricating oil path is made of working connection, VVT solenoid valve oil circuit and lubricated special-purpose oil circuit, described working connection one end is connected with the high-pressure oil passage of cylinder block, the other end is divided into two oil circuits in cylinder head, the one tunnel is VVT solenoid valve oil circuit, is communicated with the VVT solenoid valve, another road is lubricated special-purpose oil circuit, leads to the camshaft chest of cylinder head; The diameter of described working connection is more than or equal to VVT solenoid valve oil circuit diameter, and the diameter person of lubricated special-purpose oil circuit is little than the above two.
2. VVT lubrication oil path for cylinder cover of engine according to claim 1 is characterized in that, is provided with a limit whelk plug in described lubricated special-purpose oil circuit, leaves the slit that lubricant oil passes through between described limit whelk plug and lubricated special-purpose oil circuit; Described limit whelk plug adds pilot hole from the machine that lubricates special-purpose oil circuit and puts in the lubricated special-purpose oil circuit, and outer end and machine add pilot hole by screw fit, machine is added pilot hole stop up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202073675U CN201666194U (en) | 2009-11-27 | 2009-11-27 | VVT engine cylinder cover lubricating oil path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202073675U CN201666194U (en) | 2009-11-27 | 2009-11-27 | VVT engine cylinder cover lubricating oil path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666194U true CN201666194U (en) | 2010-12-08 |
Family
ID=43267153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202073675U Expired - Fee Related CN201666194U (en) | 2009-11-27 | 2009-11-27 | VVT engine cylinder cover lubricating oil path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666194U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588033A (en) * | 2012-03-23 | 2012-07-18 | 重庆长安汽车股份有限公司 | Oil limiting screw plug for engine lubrication system |
| CN104121058A (en) * | 2014-07-10 | 2014-10-29 | 安徽江淮汽车股份有限公司 | Engine lubrication system and oil duct seal assembly thereof |
-
2009
- 2009-11-27 CN CN2009202073675U patent/CN201666194U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588033A (en) * | 2012-03-23 | 2012-07-18 | 重庆长安汽车股份有限公司 | Oil limiting screw plug for engine lubrication system |
| CN104121058A (en) * | 2014-07-10 | 2014-10-29 | 安徽江淮汽车股份有限公司 | Engine lubrication system and oil duct seal assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20131127 |