CN103670581A - Oil limiting plug screw for engine lubricating system - Google Patents
Oil limiting plug screw for engine lubricating system Download PDFInfo
- Publication number
- CN103670581A CN103670581A CN201210346798.6A CN201210346798A CN103670581A CN 103670581 A CN103670581 A CN 103670581A CN 201210346798 A CN201210346798 A CN 201210346798A CN 103670581 A CN103670581 A CN 103670581A
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- oil
- plug
- cylinder cap
- plug screw
- limiting plug
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- Lubrication Of Internal Combustion Engines (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses an oil limiting plug screw for an engine lubricating system. The oil limiting plug screw is arranged at the junction of a main oil way and a cylinder head oil way. A regulating rod is disposed in the front of the oil limiting plug screw, and extends into the cylinder head oil way from a machining guide hole of the cylinder head oil way, and an oil flowing clearance is reserved between the regulating rod and the cylinder head oil way. The rear of the oil limiting plug screw is in hermetical fit connection with the machining guide hole so prevent leakage of lubricating oil. As the regulating rod with certain diameter and length is arranged in the front of the oil limiting plug screw and in clearance fit with the hole in the cylinder head oil way, the oil flowing clearance is formed as needed, the lubricating oil of the main oil way can flow into the cylinder head oil way according to flow rate and oil pressure which meet requirements of a hydraulic rocker and camshaft system. Therefore, by the aid of the oil limiting plug screw for the engine lubricating system, the requirements for flow rate and pressure of the lubricating system are met, while machining difficulty and cost are decreased greatly.
Description
Technical field
The present invention relates to car engine lubrication system, be specifically related to a kind of oil limiting screw plug for engine lubrication system.
Background technique
Along with the development of car engine machine technology, the performance requirement of its all parts is also more and more higher, as the application of hydraulic rocker in engine valve actuating mechanism, can effectively reduce engine noise, and extends the life-span of enduring cylinder and valve.Hydraulic rocker is arranged in cylinder cap, communicates with cylinder cap oil circuit, and its normal work must guarantee the engine oil pressure that it is certain, so just can make distribution device well move, so the installation of the hydraulic rocker requirement certain to being furnished with of cylinder cap oil circuit.The lubricant oil of cylinder cap oil circuit is not only supplied with hydraulic rocker, also will supply with each camshaft bearing journal, phase discriminator etc., the therefore distribution requirement of oil flow rate and pressure in comprehensive pool cylinder cap, the import aperture that need to limit cylinder cap oil circuit.And the restriction that is subject to machining tool can not be used the meticulous bore cutter of diameter in longer oil duct, so not only aperture precision is difficult to grasp, difficulty of processing increases greatly, and meticulous long oilhole is also difficult to guarantee to the pressure of machine oil and flow, be difficult to meet the requirement of engine cylinder cover design to lubricating oil pressure and flow, thereby be difficult to guarantee the normal work of hydraulic rocker and whole gas distribution system.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, difficulty of processing is low, easy to implement, can effectively control the limit whelk plug of flow of lubrication and pressure.Mainly solve the elongated oilhole difficulty of processing of cylinder cap oil circuit large, flow and oil pressure are difficult to meet the problem that engine cylinder cover lubrication System Design requires.
A kind of oil limiting screw plug for engine lubrication system of the present invention, this limit whelk plug is located at the intersection of working connection and cylinder cap oil circuit, the front portion of described limit whelk plug is adjustable lever, this adjustable lever from the machine of cylinder cap oil circuit add that pilot hole puts in cylinder cap oil circuit and and cylinder cap oil circuit between left oil-gap, this is crossed oil-gap size and calculates in advance on request and obtain, the rear portion of described limit whelk plug and machine add pilot hole and are sealed and matched and are connected, and prevent the leakage of lubricant oil.
The adjustable lever of described limit whelk plug need be through the link position of working connection and cylinder cap oil circuit.
Further, described limit whelk plug rear portion adds between pilot hole and is connected by GB/T7306.2 standard thread with described machine.
Further, in order to realize the installation of described spacing plug screw, at the rear portion of limit whelk plug, be provided with interior hexagonal mounting hole.
Beneficial effect of the present invention is: flow and the pressure of by the elongated oilhole of processing cylinder cap oil circuit, controlling lubricant oil in the past, its difficulty of processing is large, cost is high, the processing of considering axle is more simple and easy to control compared with the processing in hole, the present invention does not need to change former cylinder cap oil circuit form and structural design etc., limit whelk plug is only set in the joint of working connection and cylinder cap oil circuit, the adjustable lever with certain diameter and length by this limit whelk plug front portion coordinates with the hole shaft clearance between cylinder cap oil circuit, and satisfactory oil-gap of crossing of formation, the lubricant oil of working connection just can flow to cylinder cap oil circuit to meet flow and the oil pressure that hydraulic rocker and cam shaft system require.Therefore, meeting on the flow and pressure-based of lubrication system requirement, greatly reduce difficulty of processing and cost, and the development along with modern manufacturing industry, processing precision of products and processing conformity reach quite high level, limit whelk plug quality of product more easily guarantees, once adjustable lever dimensional accuracy after theoretical calculation and test is verified, current limliting plug screw just has good interchangeability in similar application.
Accompanying drawing explanation
Fig. 1 is the mounting arrangements schematic diagram of limit whelk plug in cylinder cap oil duct;
Fig. 2 is limit whelk plug working principle schematic diagram;
Fig. 3 is limit whelk plug structure schematic diagram.
Embodiment
The present invention is further elaborated to engage drawings and Examples below:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of oil limiting screw plug for engine lubrication system, this limit whelk plug 2 is located at working connection 1 on cylinder body and the intersection of cylinder cap oil circuit 3, the front portion of described limit whelk plug 2 is adjustable lever 21, length and the diameter dimension of adjustable lever 21 calculate by system requirements, this adjustable lever 21 from the machine of cylinder cap oil circuit 3 add that pilot hole puts in cylinder cap oil circuit 3 and and cylinder cap oil circuit between left oil-gap 7, the link position that the adjustable lever 21 of described limit whelk plug 2 needs through working connections 1 and cylinder cap oil circuit 3.The described oil-gap 7 of crossing can require preset according to system condition, and obtains by the internal diameter that the external diameter of accurate regulating and controlling bar 21 and the machine of cylinder cap oil circuit 3 add pilot hole.Described limit whelk plug 2 rear portions are processed with the pipe thread 22 of GB/T7306.2 standard, machine adds the internal thread 6 that is processed with GB/T7306.2 standard in pilot hole, limit oil draining bolt 2 is closely connected by screw thread with this pilot hole, meets the requirement of liquid sealing, prevents the leakage of lubricant oil.For the ease of installing, at the rear portion of limit whelk plug, be provided with the interior hexagonal mounting hole 23 of standard.
During installation, first on pipe thread 22, be coated with appropriate thread locking adhesive, prevent that lubricant oil, from cylinder cap oil duct face leakage, is then assemblied in spacing plug screw 2 in cylinder cap oil circuit by pipe thread 22 by standard universal sleeve.
During engine operation, lubricant oil is the joint with cylinder block and head oil circuit 3 through 1 arrival of cylinder body working connection, the restriction of limited whelk plug 2, only some lubricant oil can enter into cylinder cap oil circuit 3 by crossing oil-gap 7, and now the flow of lubricant oil and oil pressure have been adjusted to setting value.Then lubricant oil leads to respectively hydraulic rocker oil duct 4 and camshaft bearing journal oil duct 5 through cylinder cap oil circuit 3, to guarantee the normal work of hydraulic rocker and camshaft.
Claims (5)
1. an oil limiting screw plug for engine lubrication system, it is characterized in that: this limit whelk plug (2) is located at the intersection of working connection (1) and cylinder cap oil circuit (3), the front portion of described limit whelk plug (2) is adjustable lever (21), this adjustable lever (21) from the machine of cylinder cap oil circuit (3) add that pilot hole puts in cylinder cap oil circuit (3) and and cylinder cap oil circuit between left oil-gap (7), the rear portion of described limit whelk plug (2) and machine add pilot hole and are sealed and matched and are connected.
2. oil limiting screw plug for engine lubrication system according to claim 1, is characterized in that: the adjustable lever (21) of described limit whelk plug (2) needs the link position through working connection (1) and cylinder cap oil circuit (3).
3. oil limiting screw plug for engine lubrication system according to claim 1 and 2, is characterized in that: the rear portion of described limit whelk plug (2) and machine add between pilot hole and be threaded connection.
4. oil limiting screw plug for engine lubrication system according to claim 3, is characterized in that: the rear portion at limit whelk plug (2) is provided with interior hexagonal mounting hole (23).
5. oil limiting screw plug for engine lubrication system according to claim 3, is characterized in that: the rear portion of spacing plug screw (2) adds between pilot hole and adopts GB/T7306.2 metric system to be threaded with machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210346798.6A CN103670581A (en) | 2012-09-18 | 2012-09-18 | Oil limiting plug screw for engine lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210346798.6A CN103670581A (en) | 2012-09-18 | 2012-09-18 | Oil limiting plug screw for engine lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670581A true CN103670581A (en) | 2014-03-26 |
Family
ID=50309249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210346798.6A Pending CN103670581A (en) | 2012-09-18 | 2012-09-18 | Oil limiting plug screw for engine lubricating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670581A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0527684A1 (en) * | 1991-08-13 | 1993-02-17 | Regie Nationale Des Usines Renault S.A. | Head cylinder for internal combustion engine |
| WO2007036408A1 (en) * | 2005-09-27 | 2007-04-05 | Schaeffler Kg | Flow-control valve for throttling hydraulic pressure medium |
| CN201908738U (en) * | 2010-12-20 | 2011-07-27 | 浙江吉利汽车研究院有限公司 | Throttling device for lubricating oil passage of automobile engine cylinder head |
| 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 |
-
2012
- 2012-09-18 CN CN201210346798.6A patent/CN103670581A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0527684A1 (en) * | 1991-08-13 | 1993-02-17 | Regie Nationale Des Usines Renault S.A. | Head cylinder for internal combustion engine |
| WO2007036408A1 (en) * | 2005-09-27 | 2007-04-05 | Schaeffler Kg | Flow-control valve for throttling hydraulic pressure medium |
| CN201908738U (en) * | 2010-12-20 | 2011-07-27 | 浙江吉利汽车研究院有限公司 | Throttling device for lubricating oil passage of automobile engine cylinder head |
| 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 |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |