CN203499748U - Centrally-mounted VVT system - Google Patents
Centrally-mounted VVT system Download PDFInfo
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- CN203499748U CN203499748U CN201320598850.7U CN201320598850U CN203499748U CN 203499748 U CN203499748 U CN 203499748U CN 201320598850 U CN201320598850 U CN 201320598850U CN 203499748 U CN203499748 U CN 203499748U
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Abstract
The utility model provides a centrally-mounted VVT system. According to the technical scheme, the centrally-mounted VVT system comprises a cam phase adjusting mechanism, a central valve body mechanism and a solenoid valve mechanism, the central valve body mechanism is fixed to a cam shaft of the cam phase adjusting mechanism, and the solenoid valve mechanism is arranged at the rear end of the central valve body mechanism. The oil path channel of engine oil in the whole system can be shortened, the leakage amount of the engine oil is reduced, the response speed of a cam phase mechanism can be improved more effectively, better control accuracy can be achieved, and the use amount of the engine oil is reduced.
Description
Technical field
The utility model relates to a kind of variable valve timing system of engine, especially a kind of middle VVT system.
Background technique
In the prior art, known technology is in recent decades, based on improving engine power performance, economical and reduce the requirement of blowdown, many countries and motor manufacturer, scientific research institution have dropped into a large amount of human and material resources and financial resources are carried out the research and development of new technology.Variable Valve Timing Technique of IC Engine (VVT, Variable Valve Timing) is exactly to be applied to gradually in the last few years a kind of in the new technology in Modern Car, and it can promote engine power, moment of torsion, reduces oil consumption and exhaust emissions.
The middle VVT system of using at present, machine oil need to enter phase regulator by engine cylinder cover, and engine oil leakage quantity is bigger than normal, and the speed of response of cam phase mechanism and control accuracy are not high, and this is the existing deficiency of prior art.
Model utility content
The purpose of this utility model, be exactly for the existing deficiency of prior art, and provide a kind of middle VVT systems technology scheme, this scheme can shorten the asphalt channel of machine oil in whole system, reduced the amount of leakage of machine oil, more can effectively improve the speed of response of cam phase mechanism and realize more excellent control accuracy, reducing machine oil consumption.
This programme is achieved by the following technical measures: a kind of middle VVT system, include cam phase controlling mechanism, and be fixed on the central valve body mechanism in cam phase controlling mechanism and be arranged at the electromagnetic valve mechanism of central valve body mechanism rear end; The front end of valve body mechanism of central authorities is connected with engine cam.
As this programme preferably: central valve body mechanism includes: central bolt, Returnning spring, spool, one-way valve and collar; Central bolt is fixed on the camshaft of cam phase controlling mechanism; Spool is arranged on central bolt inside; Between the bottom surface of spool front end and central bolt inside, be fixed with Returnning spring; Collar is buckled in central bolt inside; Collar is positioned at the tail end of spool; One-way valve is fixed on the middle part of central bolt.
As this programme preferably: electromagnetic valve mechanism includes: valve shell, rear yoke cover, o, guide sleeve, magnetic core, push rod, front yoke cover, front yoke sheet; Valve shell inner hollow; On the inner side surface of valve shell, be fixed with rear yoke cover; In rear yoke cover, be fixed with o; The bottom of valve shell central interior is fixed with guide sleeve; Guide sleeve inside is provided with magnetic core; On magnetic core, be fixed with push rod; On push rod, cover has front yoke cover; Front yoke puts front yoke sheet.
As this programme preferably: central bolt overcoat has the machine oil separation sleeve of being close to camshaft.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because machine oil in this scheme need not pass through engine cylinder cover, but directly from valve body mechanism, enter phase-regulating mechanism, thereby greatly shortened the asphalt channel of machine oil in whole system, reduced the amount of leakage of machine oil, more can effectively improve the speed of response of cam phase mechanism and realize more excellent control accuracy, reducing machine oil consumption.
As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of central valve body mechanism.
Fig. 3 is the structural representation of electromagnetic valve mechanism.
In figure, 1 is cam phase controlling mechanism, and 2 is camshaft, and 3 is central valve body mechanism, 4 is electromagnetic valve mechanism, and 5 is machine oil separation sleeve, and 6 is central bolt, 7 is Returnning spring, and 8 is spool, and 9 is one-way valve, 10 is collar, and 11 is valve shell, and 12 is o, 13 is rear yoke cover, and 14 is front yoke sheet, and 15 is guide sleeve, 16 is magnetic core, and 17 is push rod, and 18 is front yoke cover.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
By accompanying drawing, can find out, the oil circuit of the central valve body mechanism of this programme directly and the oil circuit UNICOM of cam phase controlling mechanism, by electromagnetic valve mechanism, control the movement of central valve body mechanism, machine oil need not pass through engine cylinder cover, but directly from central valve body mechanism, enter cam phase controlling mechanism, thereby greatly shortened the asphalt channel of machine oil in whole system, reduced the amount of leakage of machine oil, more can effectively improve the speed of response of cam phase controlling mechanism and realize more excellent control accuracy, reducing machine oil consumption.The in-house one-way valve of central authorities' valve body can effectively be realized the stable of cam phase controlling mechanism.
Valve body mechanism of central authorities is when assembling, Returnning spring is put into the blind hole of spool front end, packing Returnning spring and spool into central bolt inside, fixing one-way valve on the large annular groove of central bolt, in the little annular groove of central bolt, collar is installed, the projection of collar inner ring is blocked the step of spool tail end, location spool.Collar takes up room less, with low cost after installing and reliability is higher.
Machine oil enters machine oil separation sleeve by the gap of camshaft and central bolt, by the filter screen hanging in rotor and machine oil separation sleeve, enter central valve inner again, the movement of spool can be accurately and is determined that rapidly machine oil enters passage and the flow of phase discriminator, regulate relatively rotating of rotor and housing, by another oil duct, get back to central valve inner again, from valve core inside, discharge.
In electromagnetic valve body mechanism, o generates an electromagnetic field, by rear yoke cover, guide sleeve, front yoke cover,, front yoke sheet produces an electromagnetic push (the suction-combining force) on magnetic core, promote magnetic core moves in guide sleeve, the push rod promotion spool being fixed on magnetic core moves, thereby realize regulating, controls the openings of sizes of A, B oilhole on central bolt and enters oil drain passage.And front yoke overlaps the shift motion that the length of inner inner chamber can realize control magnetic core.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a middle VVT system, includes cam phase controlling mechanism, it is characterized in that: include the electromagnetic valve mechanism that is fixed on the central valve body mechanism in cam phase controlling mechanism and is arranged at central valve body mechanism rear end; The front end of described central valve body mechanism is connected with engine cam.
2. a kind of middle VVT system according to claim 1, is characterized in that: described central valve body mechanism includes: central bolt, Returnning spring, spool, one-way valve and collar; Described central bolt is fixed on the camshaft of cam phase controlling mechanism; Described spool is arranged on central bolt inside; Between described spool front end and the bottom surface of central bolt inside, be fixed with Returnning spring; Described collar is buckled in central bolt inside; Described collar is positioned at the tail end of spool; Described one-way valve is fixed on the middle part of central bolt.
3. a kind of middle VVT system according to claim 1 and 2, is characterized in that: described electromagnetic valve mechanism includes: valve shell, rear yoke cover, o, guide sleeve, magnetic core, push rod, front yoke cover, front yoke sheet; Described valve shell inner hollow; On the inner side surface of described valve shell, be fixed with rear yoke cover; In described rear yoke cover, be fixed with o; The bottom of described valve shell central interior is fixed with guide sleeve; Described guide sleeve inside is provided with magnetic core; On described magnetic core, be fixed with push rod; On described push rod, cover has front yoke cover; Described front yoke puts front yoke sheet.
4. a kind of middle VVT system according to claim 1 and 2, is characterized in that: described central bolt overcoat has the machine oil separation sleeve of being close to camshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598850.7U CN203499748U (en) | 2013-09-27 | 2013-09-27 | Centrally-mounted VVT system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598850.7U CN203499748U (en) | 2013-09-27 | 2013-09-27 | Centrally-mounted VVT system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499748U true CN203499748U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320598850.7U Expired - Lifetime CN203499748U (en) | 2013-09-27 | 2013-09-27 | Centrally-mounted VVT system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203499748U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024265A (en) * | 2016-07-22 | 2016-10-12 | 绵阳富临精工机械股份有限公司 | Electromagnet |
| CN106661971A (en) * | 2014-08-27 | 2017-05-10 | 爱信精机株式会社 | Valve timing control device |
| CN107401452A (en) * | 2016-05-20 | 2017-11-28 | 上汽通用汽车有限公司 | Turbocharged engine assembly |
| CN107420616A (en) * | 2017-09-01 | 2017-12-01 | 杰锋汽车动力***股份有限公司 | A kind of middle VVT proportion magnetic valve |
| CN109372605A (en) * | 2018-08-29 | 2019-02-22 | 江苏农林职业技术学院 | A kind of middle VVT system |
-
2013
- 2013-09-27 CN CN201320598850.7U patent/CN203499748U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106661971A (en) * | 2014-08-27 | 2017-05-10 | 爱信精机株式会社 | Valve timing control device |
| CN106661971B (en) * | 2014-08-27 | 2019-06-28 | 爱信精机株式会社 | Valve arrangement for controlling timing |
| CN107401452A (en) * | 2016-05-20 | 2017-11-28 | 上汽通用汽车有限公司 | Turbocharged engine assembly |
| CN107401452B (en) * | 2016-05-20 | 2023-10-03 | 上汽通用汽车有限公司 | Turbocharged engine assembly |
| CN106024265A (en) * | 2016-07-22 | 2016-10-12 | 绵阳富临精工机械股份有限公司 | Electromagnet |
| CN106024265B (en) * | 2016-07-22 | 2018-01-02 | 绵阳富临精工机械股份有限公司 | A kind of electromagnet |
| CN107420616A (en) * | 2017-09-01 | 2017-12-01 | 杰锋汽车动力***股份有限公司 | A kind of middle VVT proportion magnetic valve |
| CN109372605A (en) * | 2018-08-29 | 2019-02-22 | 江苏农林职业技术学院 | A kind of middle VVT system |
| CN109372605B (en) * | 2018-08-29 | 2023-09-26 | 江苏农林职业技术学院 | Centrally-mounted VVT system |
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Granted publication date: 20140326 |