CN203856528U - Variable valve timing structure of engine - Google Patents
Variable valve timing structure of engine Download PDFInfo
- Publication number
- CN203856528U CN203856528U CN201420225424.3U CN201420225424U CN203856528U CN 203856528 U CN203856528 U CN 203856528U CN 201420225424 U CN201420225424 U CN 201420225424U CN 203856528 U CN203856528 U CN 203856528U
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- oil
- outer sleeve
- hole
- annular
- cylinder
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- Expired - Fee Related
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- 239000003921 oil Substances 0.000 claims description 126
- 238000003780 insertion Methods 0.000 claims description 28
- 230000037431 insertion Effects 0.000 claims description 28
- 239000010687 lubricating oil Substances 0.000 claims description 21
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to a variable valve timing structure of an engine. The variable valve timing structure comprises a cam shaft and a power wheel. A plug-in cylinder with a forward opening is fixedly connected to the front end of the cam shaft. The front portion of the plug-in cylinder is fixedly inserted into an outer sleeve. The outer sleeve is arranged in an inner hole of the power wheel in a rotating mode. An annular blocking edge is arranged at the front end of the power wheel. A plurality of oil storage grooves are formed in the hole wall of the inner hole of the power wheel at intervals in an annular mode. A partition plate which can divide each oil storage groove into a high pressure oil cavity and a low pressure oil cavity is arranged in the position, in the oil storage groove, of the cylindrical face of the outer sleeve. High pressure cavity oil holes are formed in the outer sleeve and respectively extend to an inner cavity of the outer sleeve. Each high pressure cavity oil hole is of a multi-layer structure distributed in the front and back direction. A plurality of annular oil grooves are formed in the cylindrical face of the plug-in cylinder at intervals in an annular mode. The number of the annular oil grooves in the cylindrical face of the plug-in cylinder is the same as the number of the layers of the high pressure cavity oil hole. The plug-in cylinder is of a pressure regulation valve structure. By means of the variable valve timing structure, oil consumption of the engine can be remarkably lowered, and the economical efficiency of the engine can be improved.
Description
Technical field
The utility model relates to a kind of engine variable valve timing structure.
Background technique
Port timing refers to that the motor inlet and outlet door representing with crank angle opens and closes constantly and opens the endurance.Variable valve timing is that the switching of mean engine inlet and outlet door can be adjusted or adjustable technology of endurance constantly.Existing variable valve timing structure mainly utilizes automatically controlled hydraulic mechanism to realize the change of port timing, wherein uses a plurality of sensor elements and hydraulic control actuator, and complex structure is controlled difficulty and maintenance inconvenience.
According to motor roadability, when engine speed is higher, its engine oil pressure is larger.When high rotating speed, if can shift to an earlier date the start-up time of intake valve, for reducing engine consumption, be very helpful simultaneously.The utility model is based on above-mentioned principle exploitation.
Model utility content
The technical problems to be solved in the utility model be to provide a kind of simple in structure, control convenient, stable and can effectively reduce the engine variable valve timing structure of oil consumption.
For solving the problems of the technologies described above, engine variable valve timing structure of the present utility model comprises camshaft and coordinates the motive power wheel of installing with camshaft front end, its structural feature is that the front end of described camshaft is connected with uncovered forward interior insertion tube, the front portion of interior insertion tube is fixedly inserted in an outer sleeve and between the inwall of this outer sleeve and the cylinder of interior insertion tube and is sealed and matched, above-mentioned outer sleeve is rotatably installed in the endoporus of motive power wheel and the front end of motive power wheel is provided with the annular gear edge that can limit outer sleeve reach, on the hole wall of motive power wheel endoporus, spacer ring is provided with a plurality of oil storage tanks, a dividing plate that oil storage tank can be divided into high-voltage oil cavity and low pressure oil pocket is all installed on the cylinder of outer sleeve in each oil storage tank, high-voltage oil cavity side at each dividing plate on outer sleeve offers a plurality of hyperbaric chamber oil holes that are intervally arranged along fore-and-aft direction, each hyperbaric chamber oil hole all extends to the inner chamber of outer sleeve, each hyperbaric chamber oil hole that interval is periphery forms the multi-layer structure distributing along fore-and-aft direction, on the cylinder of interior insertion tube, spacer ring is established a plurality of annular oil grooves along its length, identical and each annular oil groove of the number of plies of the number of annular oil groove and above-mentioned hyperbaric chamber oil hole is communicated with each hyperbaric chamber oil hole in respective layer, described interpolation cylinder forms one can be by rear to the front pressure regulator valve structure that is communicated with successively each annular oil groove and body lubricating oil circuit.
Adopt after said structure, the body lubricating oil duct of the oil storage tank in motive power wheel and motor has formed connection, the lubricant oil that is circulation in motor is flowed through successively after annular oil groove and hyperbaric chamber oil hole and is entered in the oil storage tank of motive power wheel by pressure regulator valve, oil storage tank is divided into high-voltage oil cavity and low pressure oil pocket by dividing plate, and first body lubricating oil enter high-voltage oil cavity.Hyperbaric chamber oil hole is divided into multilayer, the corresponding a plurality of annular oil grooves of difference, utilize the oil pressure sequential turn-on effect of pressure regulator valve, the oil mass that makes to enter in high-voltage oil cavity is directly proportional to the pressure of body lubricating oil, and the oil pressure of body lubricating oil is higher, and the oil mass of injecting in high-voltage oil cavity is also more, dividing plate is also more partial to low pressure oil pocket one side, thereby make each valve cam port timing of camshaft in advance, intake valve is opened in advance, reaches the object of effective reduction oil consumption.
The inner chamber of described interior insertion tube be a macropore front, aperture after ladder counter bore structure, the rear portion of interior insertion tube offers for being communicated with the pressure regulator valve inlet hole of body lubricating oil circuit and shoulder hole aperture inner chamber, in each annular oil groove, all offer that a plurality of intervals are periphery and the pressure regulator valve that extends to shoulder hole macropore inner chamber portals, in shoulder hole macropore, be slidably fitted with one and can, by the rear adjusting pressuring valve core to front each annular oil groove of conducting successively and shoulder hole macropore inner chamber, between adjusting pressuring valve core and the front bulkhead of outer sleeve, be provided with pressure adjusting spring.Adopt this kind of structure, when engine speed is low, in body lubricating oil circuit, oil pressure is lower, and pressure adjusting spring is pressed on shoulder hole small bore end by adjusting pressuring valve core.Along with the rising of rotating speed, body lubricating oil internal pressure raises gradually, and adjusting pressuring valve core moves to the large nose end of shoulder hole gradually, in mobile process, by the rear extremely front pressure regulator valve of conducting successively, is portalled and annular oil groove, realizes the sequential turn-on function of pressure regulator valve.
The rear end of described adjusting pressuring valve core offers the spool counterbore being communicated with shoulder hole aperture, offers the spool annular groove being communicated with spool counterbore on the rear portion cylinder of adjusting pressuring valve core.Adopt this kind of structure, the structure of utilizing the annular oil groove offered in the spool annular groove offered on spool and interior insertion tube to be conducted, flows oil circuit more smooth and easy, and it is more steady that spool moves.
On the cylinder of described overcoat, spacer ring is provided with a plurality of duplicate removal deep gouges staggered with dividing plate.Adopt this kind of structure, alleviated weight and the frictional loss of outer sleeve.
Spaced apartly on the cylinder of described outer sleeve be provided with a plurality of dividing plate slots, the bottom of described dividing plate is inserted in dividing plate slot.Adopt this kind of structure, dividing plate adopts plug-in mounting structure, easy accessibility.Due in oil storage tank, the lubricant oil in high-voltage oil cavity needs pressure release to arrive in low pressure oil pocket, and the gap between dividing plate and oil storage tank can be passed through for lubricant oil, makes the oil pressure in high-voltage oil cavity and low pressure oil pocket can reach as early as possible balance.
On the front bulkhead of described interior insertion tube, spacer ring is established a plurality of tapped holes, offers the bolt mounting hole corresponding with above-mentioned tapped hole on the front bulkhead of outer sleeve, and the front end of interior insertion tube is packed on the front bulkhead of outer sleeve by bolt.
Working procedure of the present utility model is: when motor is during in the slow-speed of revolution, and the lower pressure adjusting spring that is not enough to push open in pressure regulator valve of lubricating oil pressure in body, now variable valve timing structure is inoperative, is equivalent to common engine.When motor is during in high rotating speed, in body, lubricating oil pressure raises, engine oil pressure promotes adjusting pressuring valve core compression pressure adjusting spring, adjusting pressuring valve core moves to the position that spool annular groove is communicated with the hyperbaric chamber oil hole of outer sleeve, now the lubricant oil in body enters high-voltage oil cavity, make the deflection of outer sleeve and motive power wheel generation several angle, shifted to an earlier date the start-up time of engine breathing door.
The beneficial effects of the utility model are: when motor is during in high rotary speed working, the inlet and exhaust valve start-up time of motor can significantly reduce the oil consumption of motor in advance, improves the Economy of motor.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is assembly structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model medium power wheel;
Fig. 3 is the assembly structure schematic diagram between the utility model medium power wheel and outer sleeve;
Fig. 4 is the structural representation of wherein a kind of outer sleeve of the utility model employing;
Fig. 5 is the structural representation of the another kind of outer sleeve of the utility model employing;
Fig. 6 is the structural representation of interior insertion tube in the utility model;
Fig. 7 is the structural representation of adjusting pressuring valve core in the utility model.
Embodiment
With reference to accompanying drawing, engine variable valve timing structure of the present utility model comprises camshaft 1 and coordinates the motive power wheel 13 of installing with camshaft 1 front end, the front end of camshaft 1 is connected with uncovered forward interior insertion tube 2, the front portion of interior insertion tube 2 is fixedly inserted in an outer sleeve 3 and is sealed and matched between the inwall of this outer sleeve 3 and the cylinder of interior insertion tube 2, above-mentioned outer sleeve 3 is rotatably installed in the endoporus of motive power wheel 13 and the front end of motive power wheel 13 be provided with can limit outer sleeve 3 reaches annular gear along 4, on the hole wall of motive power wheel endoporus, spacer ring is provided with a plurality of oil storage tanks 5, on the cylinder of outer sleeve 3, all install one and oil storage tank 5 can be divided into the dividing plate 6 of high-voltage oil cavity 51 and low pressure oil pocket 52 each oil storage tank 5 is interior, high-voltage oil cavity 51 sides at each dividing plate 6 on outer sleeve 3 offer a plurality of hyperbaric chamber oil holes 7 that are intervally arranged along fore-and-aft direction, each hyperbaric chamber oil hole 7 all extends to the inner chamber of outer sleeve 3, each hyperbaric chamber oil hole 7 that interval is periphery forms the multi-layer structure distributing along fore-and-aft direction, on the cylinder of interior insertion tube 2, spacer ring is established a plurality of annular oil grooves 8 along its length, identical and each annular oil groove 8 of the number of plies of the number of annular oil groove 8 and above-mentioned hyperbaric chamber oil hole 7 is communicated with each hyperbaric chamber oil hole 7 in respective layer, described interior insertion tube 2 forms one can be by rear to the front pressure regulator valve structure that is communicated with successively each annular oil groove 8 and body lubricating oil circuit.
In said structure, oil storage tank 5 in motive power wheel and the body lubricating oil duct of motor have formed connection, the lubricant oil that is circulation in motor is flowed through successively and is entered the oil storage tank 5 of motive power wheel after annular oil groove 8 and hyperbaric chamber oil hole 7 by pressure regulator valve, oil storage tank 5 is divided into high-voltage oil cavity 51 and low pressure oil pocket 52 by dividing plate 6, and first body lubricating oil enter high-voltage oil cavity 51.Hyperbaric chamber oil hole 7 is divided into multilayer, the corresponding a plurality of annular oil grooves 8 of difference, utilize the oil pressure sequential turn-on effect of pressure regulator valve, the oil mass that makes to enter in high-voltage oil cavity 51 is directly proportional to the pressure of body lubricating oil, and the oil pressure of body lubricating oil is higher, and the oil mass of high-voltage oil cavity 51 interior injections is also more, dividing plate 6 is also more partial to low pressure oil pocket 52 1 sides, thereby make each valve cam port timing of camshaft in advance, intake valve is opened in advance, reaches the object of effective reduction oil consumption.
Wherein, the function of pressure regulator valve is to regulate and enter the lubricants capacity in high-voltage oil cavity according to the oil pressure of body lubricating oil, and it is by regulating the conducting quantity of annular oil groove and hyperbaric chamber oil hole to realize.Shown in the drawings of two annular oil grooves and two-layer hyperbaric chamber oil hole, wherein, every layer arranges six hyperbaric chamber oil holes.For the pressure regulator valve structure being formed by interpolation cylinder: the inner chamber of interior insertion tube 2 is that a macropore is front, aperture after ladder counter bore structure, the rear portion of interior insertion tube 2 offers for being communicated with the pressure regulator valve inlet hole 9 of body lubricating oil circuit and shoulder hole aperture 20 inner chambers, each annular oil groove 8 is interior all offers that a plurality of intervals are periphery and the pressure regulator valve that extends to shoulder hole macropore 21 inner chambers portals 10, in shoulder hole macropore 21, being slidably fitted with one can be by rear to the adjusting pressuring valve core 11 of each annular oil groove 8 of front conducting successively with shoulder hole macropore 21 inner chambers, between the front bulkhead of adjusting pressuring valve core 11 and outer sleeve 3, be provided with pressure adjusting spring 12.Adopt this kind of structure, when engine speed is low, in body lubricating oil circuit, oil pressure is lower, and pressure adjusting spring 12 is pressed on shoulder hole aperture 20 ends by adjusting pressuring valve core 11.Rising along with rotating speed, body lubricating oil internal pressure raises gradually, and adjusting pressuring valve core 11 moves to shoulder hole macropore 21 ends gradually, in mobile process, adjusting pressuring valve core 11 by rear to the front pressure regulator valve of conducting successively portal 10 with annular oil groove 8, realize the sequential turn-on function of pressure regulator valve.Wherein, in order to make oil circuit unimpeded, the rear end of adjusting pressuring valve core 11 offers the spool counterbore 110 being communicated with shoulder hole aperture 20, offers the spool annular groove 111 being communicated with spool counterbore 110 on the rear portion cylinder of adjusting pressuring valve core 11.
With reference to accompanying drawing, in order to alleviate the weight of outer sleeve and the frictional loss between outer sleeve and motive power wheel inner hole wall, on the cylinder of outer sleeve 3, spacer ring is provided with a plurality of duplicate removal deep gouges 31 staggered with dividing plate 6.
With reference to accompanying drawing, spaced apartly on the cylinder of outer sleeve 3 be provided with a plurality of dividing plate slots 33, the bottom of dividing plate 6 is inserted in dividing plate slot 33.In oil storage tank 5, the lubricant oil in high-voltage oil cavity 51 needs pressure release to arrive in low pressure oil pocket 52, and the gap between dividing plate 6 and oil storage tank inwall 5 can be passed through for lubricant oil, makes the oil pressure of high-voltage oil cavity 51 and low pressure oil pocket interior 52 can reach as early as possible balance.Dividing plate 6 adopts this kind of plug-in mounting structure, easy accessibility and be conducive to realize above-mentioned functions.
With reference to accompanying drawing, for the installation between interior insertion tube 2 and outer sleeve 3, on the front bulkhead of interior insertion tube 2, spacer ring is established a plurality of tapped holes 22, on the front bulkhead of outer sleeve 3, offer the bolt mounting hole 32 corresponding with above-mentioned tapped hole 22, the front end of interior insertion tube 2 is packed on the front bulkhead of outer sleeve 3 by bolt.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (6)
1. an engine variable valve timing structure, comprise camshaft (1) and coordinate the motive power wheel (13) of installing with camshaft (1) front end, the front end that it is characterized in that described camshaft (1) is connected with forward uncovered interior insertion tube (2), the front portion of interior insertion tube (2) is fixedly inserted in an outer sleeve (3), outer sleeve (3) is rotatably installed in the endoporus of motive power wheel (13) and the front end of motive power wheel (13) be provided with can limit outer sleeve (3) reach annular gear along (4), on the hole wall of motive power wheel endoporus, spacer ring is provided with a plurality of oil storage tanks (5), a dividing plate (6) that oil storage tank (5) can be divided into high-voltage oil cavity (51) and low pressure oil pocket (52) is all installed on the cylinder of outer sleeve (3) in each oil storage tank (5), upper high-voltage oil cavity (51) side in each dividing plate (6) of outer sleeve (3) offers a plurality of hyperbaric chamber oil holes (7) that are intervally arranged along fore-and-aft direction, each hyperbaric chamber oil hole (7) all extends to the inner chamber of outer sleeve (3), each hyperbaric chamber oil hole (7) that interval is periphery forms the multi-layer structure distributing along fore-and-aft direction, on the cylinder of interior insertion tube (2), spacer ring is established a plurality of annular oil grooves (8) along its length, identical and each annular oil groove (8) of the number of plies of the number of annular oil groove (8) and above-mentioned hyperbaric chamber oil hole (7) is communicated with each hyperbaric chamber oil hole (7) in respective layer, described interior insertion tube (2) forms one can be by rear to the front pressure regulator valve structure that is communicated with successively each annular oil groove (8) and body lubricating oil circuit.
2. engine variable valve timing structure as claimed in claim 1, the inner chamber that it is characterized in that described interior insertion tube (2) is that a macropore is front, aperture after ladder counter bore structure, the rear portion of interior insertion tube (2) offers for being communicated with the pressure regulator valve inlet hole (9) of body lubricating oil circuit and shoulder hole aperture (20) inner chamber, in each annular oil groove (8), all offer that a plurality of intervals are periphery and the pressure regulator valve that extends to shoulder hole macropore (21) inner chamber portals (10), in shoulder hole macropore (21), being slidably fitted with one can be by rear to the adjusting pressuring valve core (11) of front each annular oil groove of conducting successively (8) with shoulder hole macropore (21) inner chamber, between the front bulkhead of adjusting pressuring valve core (11) and outer sleeve (3), be provided with pressure adjusting spring (12).
3. engine variable valve timing structure as claimed in claim 2, the rear end that it is characterized in that described adjusting pressuring valve core (11) offers the spool counterbore (110) being communicated with shoulder hole aperture (20), offers the spool annular groove (111) being communicated with spool counterbore (110) on the rear portion cylinder of adjusting pressuring valve core (11).
4. engine variable valve timing structure as claimed in claim 1, is characterized in that on the cylinder of described outer sleeve (3), spacer ring is provided with a plurality of duplicate removal deep gouges (31) staggered with dividing plate (6).
5. engine variable valve timing structure as claimed in claim 1, is characterized in that the spaced apart a plurality of dividing plate slots (33) that are provided with on the cylinder of described outer sleeve (3), and the bottom of described dividing plate (6) is inserted in dividing plate slot (33).
6. the engine variable valve timing structure as described in any one in claim 1-5, it is characterized in that on the front bulkhead of described interior insertion tube (2), spacer ring is established a plurality of tapped holes (22), on the front bulkhead of outer sleeve (3), offer the bolt mounting hole (32) corresponding with above-mentioned tapped hole (22), the front end of interior insertion tube (2) is packed on the front bulkhead of outer sleeve (3) by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225424.3U CN203856528U (en) | 2014-05-05 | 2014-05-05 | Variable valve timing structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225424.3U CN203856528U (en) | 2014-05-05 | 2014-05-05 | Variable valve timing structure of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856528U true CN203856528U (en) | 2014-10-01 |
Family
ID=51606387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225424.3U Expired - Fee Related CN203856528U (en) | 2014-05-05 | 2014-05-05 | Variable valve timing structure of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856528U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370336A (en) * | 2015-11-23 | 2016-03-02 | 重庆祥吉机械制造有限公司 | Novel cam shaft |
| CN105386804A (en) * | 2015-11-23 | 2016-03-09 | 重庆祥吉机械制造有限公司 | Cam structure |
| CN111033002A (en) * | 2017-08-07 | 2020-04-17 | 黑拉有限责任两合公司 | Valve assembly for controlling camshaft timing apparatus |
-
2014
- 2014-05-05 CN CN201420225424.3U patent/CN203856528U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370336A (en) * | 2015-11-23 | 2016-03-02 | 重庆祥吉机械制造有限公司 | Novel cam shaft |
| CN105386804A (en) * | 2015-11-23 | 2016-03-09 | 重庆祥吉机械制造有限公司 | Cam structure |
| CN105386804B (en) * | 2015-11-23 | 2017-12-15 | 重庆祥吉机械制造有限公司 | A kind of cam structure |
| CN111033002A (en) * | 2017-08-07 | 2020-04-17 | 黑拉有限责任两合公司 | Valve assembly for controlling camshaft timing apparatus |
| CN111033002B (en) * | 2017-08-07 | 2022-08-23 | 黑拉有限责任两合公司 | Valve assembly for controlling camshaft timing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 |