CN106939807B - Middle locking formula VVT machine oil control valve - Google Patents
Middle locking formula VVT machine oil control valve Download PDFInfo
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- CN106939807B CN106939807B CN201710334963.9A CN201710334963A CN106939807B CN 106939807 B CN106939807 B CN 106939807B CN 201710334963 A CN201710334963 A CN 201710334963A CN 106939807 B CN106939807 B CN 106939807B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Check Valves (AREA)
Abstract
The invention discloses an intermediate locking type VVT engine oil control valve, which comprises a bolt body, a valve sleeve and a valve core, wherein a first one-way valve is arranged at an oil inlet of the bolt body, at least three groups of oil channels are arranged on the bolt body, at least five groups of oil channels are axially distributed on the valve sleeve, an oil inlet and an oil outlet on the bolt body are respectively communicated with the at least three groups of oil channels on the bolt body through the at least five groups of oil channels on the valve sleeve, and at least one group of oil channels are used for jacking up a lock pin of a rotor blade of a phaser through a lock pin rotor oil channel to unlock the lock pin. The invention can carry out lag adjustment on the basis of the intake phase of the VVT system under the starting working condition, thereby meeting the requirement of the Atkinson cycle of the engine on a larger phase lag angle. The VVT system has a larger adjustable angle range, so that the requirement of engine performance on phase adjustment can be better met.
Description
Technical Field
The invention relates to an intermediate locking type engine oil control valve for phase adjustment of a variable cam timing system in an engine variable cam timing system.
Background
With the rapid development of the automobile industry, the contradiction of petroleum resource shortage is increasingly prominent, the importance and urgency of energy conservation are increasingly revealed, and how to save energy and reduce the side effects of greenhouse effect generated when consuming energy, and the reduction of automobile fuel consumption seems to be a common concern for automobile manufacturers and users. And variable valve timing technology is an effective means of improving fuel economy and reducing engine emissions. The innovation of the variable valve timing technique will be a development direction worthy of research.
At present, an engine variable cam timing system mainly adopts an intake phase unlocking front adjustment scheme, and the VVT adjusts the engine valve timing within a certain range (0-60 CA) to meet the requirements of the engine on the gas mixture quantity and the gas mixture concentration under different working conditions. The intake VVT is fixed at the most retarded position at the time of engine start to give consideration to engine starting performance, and its adjustable angle is limited by engine starting performance, and the retarded angle cannot be designed too large. The hysteresis angle is too large, the engine starting performance is poor, and the emission in the starting process is deteriorated. However, the technical requirements of the Atkinson cycle of the engine, etc. are that the VVT system has a larger hysteresis angle, so that the disadvantage of smaller intake hysteresis angle of the VVT becomes more and more prominent.
Disclosure of Invention
The invention aims at: in order to solve the problems, a solution is provided for combining engine starting performance and a larger hysteresis angle, so that the engine performance is optimized.
The technical scheme of the invention is realized as follows: the utility model provides an intermediate locking formula VVT engine oil control valve, includes the bolt body, sets up the valve pocket in the bolt body hole and sets up the case in the valve pocket hole, the case can slide in the valve pocket hole the oil inlet department of the bolt body is provided with first check valve and constitutes its characterized in that: the novel phase shifter rotor blade is characterized in that at least three groups of oil passages are arranged on the bolt body, at least one oil hole is formed in each group of oil passages, at least five groups of oil passages are distributed on the valve sleeve along the axial direction, at least one oil hole is formed in each group of oil passages in the circumferential direction, an oil inlet and an oil outlet on the bolt body are respectively communicated with at least three groups of oil passages on the bolt body through at least five groups of oil passages on the valve sleeve, at least one group of oil passages on the bolt body are used for jacking up a lock pin of a phase shifter rotor blade through a lock pin rotor oil passage to unlock the lock pin, at least one group of oil passages are communicated with an A cavity of the phase shifter rotor blade through an A cavity rotor oil passage, at least one group of oil passages are communicated with a B cavity of the phase shifter rotor blade through a B cavity rotor oil passage, the lock pin rotor oil passage, the A cavity rotor oil passage and the B cavity rotor oil passage are mutually independent, and initially, the phase shifter rotor blade is locked in the middle of an oil cavity of the phase shifter housing through the lock pin.
The oil passages on the bolt body are three groups of lock pin oil holes, an A cavity oil hole and a B cavity oil hole respectively, the oil passages on the valve sleeve are five groups of first oil holes, second oil holes, one-way valve oil inlet holes and fifth oil holes respectively, the first oil holes and the one-way valve oil inlet holes are communicated with oil inlets respectively, the fifth oil holes are communicated with the A cavity oil hole on the bolt body, the second oil holes are communicated with the B cavity oil hole on the bolt body, the one-way valve oil holes are communicated with the lock pin oil holes on the bolt body, the valve core can connect and connect or block the first oil holes and the second oil holes on the valve sleeve through sliding, can connect and connect or block the first oil holes and the fifth oil holes on the valve sleeve, the lock pin is communicated with the oil holes of the rotor, the A cavity oil holes are communicated with the A cavity oil holes and the B cavity oil holes of the rotor, and the B cavity oil passages of the rotor are communicated with the oil channels of the rotor.
The middle locking type VVT engine oil control valve is characterized in that a one-way valve groove is arranged in a valve sleeve, a second one-way valve is arranged at the one-way valve groove, the second one-way valve is of a circular structure and realizes a one-way circulation function by means of radial tension, and the superposition part of the second one-way valve is reversely arranged with an oil inlet hole of the one-way valve on the valve sleeve.
The middle locking type VVT engine oil control valve is characterized in that a plug is arranged in the bolt body and at an oil outlet, an oil drain port is arranged on the plug, a pre-pressing mechanism is arranged between the plug and a valve sleeve, the pre-pressing mechanism comprises a pre-pressing spring and a pre-pressing spring seat, and the pre-pressing spring always gives a return force to the pre-pressing spring seat.
The invention discloses an intermediate locking type VVT engine oil control valve, which is characterized in that a bolt body step hole for installing a plug is arranged at an oil outlet of a bolt body, and a plug first step for limiting axial displacement of a valve core and a plug second step for limiting axial displacement of a pre-pressing spring seat are arranged in the plug.
The middle locking type VVT engine oil control valve disclosed by the invention has the advantages that the pre-pressing spring seat is sleeved on the periphery of the valve core, the pre-pressing spring seat is composed of the spring flange and the guide sleeve, the pre-pressing spring is arranged between the spring flange of the pre-pressing spring seat and the first stepped hole of the valve sleeve, the spring flange and the first stepped hole of the valve sleeve are used for limiting the axial movement of the pre-pressing spring, and the guide sleeve of the pre-pressing spring seat is in contact limit with the outer circle of the valve core and plays a guiding role on the pre-pressing spring.
The middle locking type VVT engine oil control valve is characterized in that a positioning boss is arranged at the end part of a plug, a positioning groove corresponding to the positioning boss is arranged at the end part of a valve sleeve, and the valve sleeve is limited to rotate by the cooperation of the positioning boss and the positioning groove.
Compared with the prior art, the invention has the following beneficial effects: the invention can carry out lag adjustment on the basis of the intake phase of the VVT system under the starting working condition, thereby meeting the requirement of the Atkinson cycle of the engine on a larger phase lag angle. The VVT system has a larger adjustable angle range, so that the requirement of engine performance on phase adjustment can be better met.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2, 3 and 4 are schematic views of the structure of the valve housing of the present invention.
Fig. 5 is a schematic view of the structure of the bolt body according to the present invention.
Fig. 6 is a schematic structural view of a second check valve according to the present invention.
Fig. 7 is a schematic structural view of the plug according to the present invention.
Fig. 8 and 9 are schematic structural views of a preloaded spring seat according to the present invention.
Fig. 10 and 11 are schematic views of the adjustment of the oil control valve of the present invention.
Reference numerals: 1 is a valve core, 2 is a plug, 3 is a pre-pressing spring, 4 is a bolt body, 5 is a third connecting oil duct, 6 is a valve sleeve, 7 is an elastic washer, 8 is a one-way valve body, 9 is an oil collecting cavity, 10 is a filter screen, 11 is a one-way valve seat, 12 is a spring seat, 13 is a one-way valve steel ball, 14 is a one-way valve spring, 15 is a second one-way valve, 16 is a return spring, 17 is a first connecting oil duct, 18 is a pre-pressing spring seat, 19 is a positioning groove, 20 is a valve sleeve first step hole, 21 is a first oil hole, 22 is a second oil hole, 23 is a one-way valve oil outlet hole, 24 is a one-way valve oil inlet hole, 25 is a valve sleeve second step hole, 26 is a one-way valve groove, 27 is a first oil groove, 28 is a fifth oil hole, 29 is a second oil groove, 30 is a third oil groove, 31 is a fourth oil groove, 32 is a bolt body step hole, 33 is a lock pin oil hole, 34 is a bolt body step, 35 is a B cavity oil hole, 36 is an A cavity oil hole, 37 and 38 are two ends of a superposition part of a second one-way valve, 39 is an oil drain port, 40 is a plug first step, 41 is a plug second step, 42 is a positioning boss, 43 is a spring flange, 44 is a guide sleeve, 45 is a lock pin, 46 is an A cavity, 47 is a phaser rotor blade, 48 is a B cavity, 49 is a B cavity rotor oil duct, 50 is an A cavity rotor oil duct, 51 is a lock pin rotor oil duct, 52 is an oil outlet, and 53 is an oil inlet.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-9, an intermediate locking VVT oil control valve, comprising a bolt body 4, a valve sleeve 6 disposed in the inner hole of the bolt body 4, and a valve core 1 disposed in the inner hole of the valve sleeve 6, wherein the bolt body is used for connecting a cam shaft, the inner hole of the bolt body is completely through in steps, the valve sleeve is of an integral structure, the valve sleeve can be made of aluminum alloy or plastic injection molding, the materials and the process are just examples, other materials and process modes capable of realizing the shape structure are also suitable, the valve core 1 can slide in the inner hole of the valve sleeve 6, the valve sleeve 6 and the bolt body 4 are in clearance fit, thereby eliminating the influence of deformation of the bolt body 4 on the valve sleeve 6 in the mounting and screwing process, ensuring flexible sliding of the valve core 1 in the inner hole of the valve sleeve 6, a first one-way valve is disposed at the oil inlet 53 of the bolt body 4, at least three groups of oil channels are arranged on the bolt body 4, at least one oil hole is arranged in each group of oil channels, at least four groups of oil grooves are arranged on the circumference of the valve sleeve 6, at least one oil groove is arranged in each group of oil grooves, at least five groups of oil channels are distributed on the valve sleeve 6 along the axial direction, at least one oil hole is arranged in each group of oil channels in the circumferential direction, an oil inlet 53 and an oil outlet 52 on the bolt body 4 are respectively communicated with at least three groups of oil channels on the bolt body 4 through at least five groups of oil channels and at least four groups of oil grooves on the valve sleeve 6, at least one group of oil channels on the bolt body 4 is used for jacking up a lock pin 45 of a phaser rotor blade 47 to unlock through a lock pin rotor oil channel 51, at least one group of oil channels is communicated with an A cavity 46 of the phaser rotor blade 47 through an A cavity rotor oil channel 50, at least one set of oil passages communicates with the B-cavity 48 of the phaser rotor blade 47 via the B-cavity rotor oil passage 49, the lock pin rotor oil passage 51, the a-cavity rotor oil passage 50, and the B-cavity rotor oil passage 49 are independent of each other, and initially the phaser rotor blade is locked in the middle of the phaser housing oil chamber via a lock pin.
In this embodiment, the oil channels on the bolt body 4 are three groups, namely, a lock pin oil hole 33, an a cavity oil hole 36 and a B cavity oil hole 35, these three groups are only for illustrating the principle, other shapes and structures capable of achieving this function are equally applicable, the oil channels on the valve sleeve 6 are formed into four groups, namely, a first oil channel 27, a second oil channel 29, a third oil channel 30 and a fourth oil channel 31, the oil channels on the valve sleeve 6 are five groups, namely, a first oil hole 21, a second oil hole 22, a check valve oil hole 23, a check valve oil inlet hole 24 and a fifth oil hole 28, the five groups of oil channels are distributed in a certain angle in the circumferential direction, the fourth oil channel 31 and the inner wall of the bolt body 4 form an oil inlet channel, the first oil channel 27 and the inner hole wall of the bolt body 4 form a first connecting oil channel 17, the second oil channel 29 and the inner hole wall of the bolt body 4 form a second connecting oil channel, the third oil groove 30 and the inner hole wall of the bolt body 4 form a third connecting oil duct 5, the first oil hole 21 and the one-way valve oil inlet hole 24 are respectively communicated with an oil inlet channel, the fifth oil hole 28 is connected with the first oil groove 27 and communicated with an A cavity oil hole 36 on the bolt body 4, the second oil hole 22 is connected with the second oil groove 29 and communicated with a B cavity oil hole 35 on the bolt body 4, the one-way valve oil outlet hole 23 is connected with the third oil groove 30 and communicated with a lock pin oil hole 33 on the bolt body 4, the valve core 1 can connect and connect or block the first oil hole 21 and the second oil hole 22 on the valve sleeve 6 through sliding, can connect and connect or block the one-way valve oil outlet hole 23 and the one-way valve oil inlet hole 24 on the valve sleeve 6, can also connect and connect or block the first oil hole 21 and the fifth oil hole 28 on the valve sleeve 6, the lock pin oil hole 33 communicates with the lock pin rotor oil passage 51, the a cavity oil hole 36 communicates with the a cavity rotor oil passage 50, and the B cavity oil hole 35 communicates with the B cavity rotor oil passage 49.
The valve sleeve 6 is internally provided with a one-way valve groove 26, a second one-way valve 15 is arranged at the one-way valve groove 26, the second one-way valve 15 is of a circular structure and realizes a one-way circulation function by means of radial tension, and overlapping parts 37 to 38 of the second one-way valve 15 are reversely arranged with one-way valve oil inlet holes 24 on the valve sleeve 6; a plug 2 is arranged in the bolt body 4 and at the oil outlet 52, the shape example of the plug is only for illustrating the principle, other shapes and structures capable of realizing the function are also applicable, an oil drain port 39 is arranged on the plug 2, a positioning boss 42 is arranged at the end part of the plug 2, a positioning groove 19 correspondingly matched with the positioning boss 42 is arranged at the end part of the valve sleeve 6, and the rotation of the valve sleeve 6 is limited by the matching of the positioning boss 42 and the positioning groove 19, so that the dislocation of the oil hole is prevented; the valve sleeve 6 is provided with a return spring 16, the pre-compression spring 3 always gives a return force to the pre-compression spring seat 18, the return spring 16 always gives a return force to the valve core 1, the oil outlet 52 of the bolt body 4 is provided with a bolt body stepped hole 32 for installing the plug 2, the plug 2 is internally provided with a plug first step 40 for limiting the axial displacement of the valve core 1 and a plug second step 41 for limiting the axial displacement of the pre-compression spring seat 18, the pre-compression spring seat 18 is sleeved on the periphery of the valve core 1, the pre-compression spring seat 18 is composed of a spring flange 43 and a guide sleeve 44, the pre-compression spring 3 is arranged between the spring flange 43 of the spring seat 18 and the valve sleeve first stepped hole 20 of the valve sleeve 6, the spring flange 43 and the first stepped hole 20 are used for limiting the axial movement of the valve core 3, and the guide sleeve 44 of the pre-compression spring seat 18 is used for contacting the valve core 1 and limiting the pre-compression spring seat 18 to guide the valve core 3.
The first check valve comprises a check valve body 8, a check valve seat 11, a spring seat 12, a check valve steel ball 13 and a check valve spring 14, wherein the spring seat 12 is arranged at a valve sleeve second step hole 25 at the tail part of the valve sleeve 6, the check valve steel ball 13 is arranged in the check valve body 8, the check valve steel ball 13 can slide in an inner through hole of the check valve body 8, the check valve spring 14 is arranged in the spring seat 12, the check valve seat 11 is arranged at a bolt body step 34 at the bottom of an inner hole of the bolt body 4, a filter screen 10 is arranged between the bolt body 4 and the check valve seat 11, an oil collecting cavity 9 is formed between the inner hole formed by the first check valve and the filter screen 10, an elastic gasket 7 is arranged between the spring seat 12 and the check valve body 8, and the elastic gasket 7 always forms elasticity between the spring seat 12 and the check valve body 8 so as to eliminate axial gaps between parts arranged in the bolt body 4 and prevent parts from moving.
The engine oil control valve of the invention changes the relative angle of the cam shaft and the crank shaft by adjusting the vane phaser to achieve improved engine performance or reduced emissions. In most cases, the phaser has a rotor with one or more vanes mounted on the end of the camshaft and the housing is sleeved on the rotor. The shell is provided with a blade cavity corresponding to the rotor blade, the rotor blade divides the blade cavity into an A cavity and a B cavity, two lock pins are arranged on the rotor blade, the oil control valve oil hole is connected with the A cavity, the B cavity and the lock pins through a rotor oil duct, and the rotor is locked in the middle of an oil cavity of the phaser shell under the action of a return spring at the beginning, so that the aim of controlling the angle is fulfilled.
As shown in fig. 10, when the phaser rotor vane 47 needs to be adjusted toward the B chamber 48, engine oil enters the engine oil control valve from the oil inlet 53, pushes open the check valve steel ball 13 to enter the oil inlet passage, then enters the a chamber 46 through the a chamber rotor oil passage 50, starts to build up engine oil pressure in the a chamber 46, then enters the check valve oil outlet hole 23 through the second check valve 15, and passes through the third connection oil passage 5 of the bolt body 4 to be connected with the lock pin rotor oil passage 51 through the lock pin oil hole 33, and at this time, the lock pin 45 is lifted by the engine oil pressure, and the lock pin is unlocked. At this time, the B chamber 48 is connected to the oil outlet 52 via the bolt body 4 and the third oil groove 30 of the valve sleeve 6, so that the phaser rotor blade 47 is pushed to adjust to the B chamber 48 by the oil pressure of the a chamber 46.
As shown in fig. 11, when the phaser rotor blade 47 needs to be adjusted toward the a cavity 46, engine oil enters the engine oil control valve from the oil inlet 53, pushes open the check valve steel ball 13 to enter the oil inlet passage, then enters the B cavity 48 through the second oil hole 22 of the valve sleeve 6, the B cavity oil hole 35 of the bolt body 4 and the B cavity rotor oil passage 49, starts to build up engine oil pressure in the B cavity 48, then enters the check valve oil outlet 23 through the second check valve 15, and is connected with the lock pin rotor oil passage 51 through the lock pin oil hole 33 through the third connection oil passage 5 of the bolt body 4, and at this time, the engine oil pressure lifts the lock pin 45 and unlocks the lock pin. At this time, the a chamber 46 is communicated with the oil outlet 52 through the a chamber rotor oil passage 50, thereby pushing the phaser rotor blade 47 to adjust toward the a chamber 46 under the oil pressure of the B chamber 48.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The utility model provides an intermediate locking formula VVT engine oil control valve, includes the bolt body (4), sets up valve pocket (6) and case (1) of setting in valve pocket (6) hole in the hole of bolt body (4), case (1) can slide in valve pocket (6) hole the oil inlet (53) department of bolt body (4) is provided with first check valve and constitutes its characterized in that: at least three groups of oil passages are arranged on the bolt body (4), each group of oil passages is provided with at least one oil hole, at least five groups of oil passages are distributed on the valve sleeve (6) along the axial direction, each group of oil passages is provided with at least one oil hole in the circumferential direction, an oil inlet (53) and an oil outlet (52) on the bolt body (4) are respectively communicated with at least three groups of oil passages on the bolt body (4) through at least five groups of oil passages on the valve sleeve (6), at least one group of oil passages is used for jacking up a lock pin (45) of a phaser rotor blade (47) through a lock pin rotor oil passage (51) to unlock the lock pin, at least one group of oil passages is communicated with an A cavity (46) of the phaser rotor blade (47) through an A cavity rotor oil passage (50), at least one group of oil passages is communicated with a B cavity (48) of the phaser rotor blade (47) through a B cavity rotor (49), and the lock pin (45) of the phaser rotor blade is initially locked up through the lock pin rotor oil passage (49);
the novel hydraulic oil-saving bolt is characterized in that plugs (2) are arranged in the bolt body (4) and at the oil outlet (52), oil drain ports (39) are formed in the plugs (2), a pre-pressing mechanism is arranged between the plugs (2) and the valve sleeve (6), the pre-pressing mechanism comprises a pre-pressing spring (3) and a pre-pressing spring seat (18), and the pre-pressing spring (3) always gives a return force to the pre-pressing spring seat (18).
2. The intermediate locking VVT oil control valve of claim 1, wherein: the oil channels on the bolt body (4) are three groups of lock pin oil holes (33), A cavity oil holes (36) and B cavity oil holes (35), the oil channels on the valve sleeve (6) are five groups of first oil holes (21), second oil holes (22), one-way valve oil outlet holes (23), one-way valve oil inlet holes (24) and fifth oil holes (28), the first oil holes (21) and the one-way valve oil inlet holes (24) are respectively communicated with the oil inlet (53), the fifth oil holes (28) are communicated with the A cavity oil holes (36) on the bolt body (4), the second oil holes (22) are communicated with the B cavity oil holes (35) on the bolt body (4), the one-way valve oil outlet holes (23) are communicated with the oil holes (33) on the bolt body (4), the valve core (1) can be used for connecting or blocking the first oil holes (21) and the second oil holes (22) on the valve sleeve (6) through sliding, can also be used for connecting or blocking the first oil holes (21) and the second oil holes (22) on the valve sleeve (6) and can be used for connecting the one-way valve sleeve (6) and the fifth oil holes (21) and the one-way valve oil holes (51) and the fifth oil holes (33) through sliding, the A cavity oil hole (36) is communicated with the A cavity rotor oil duct (50), and the B cavity oil hole (35) is communicated with the B cavity rotor oil duct (49).
3. The intermediate locking VVT oil control valve of claim 2, wherein: be provided with check valve groove (26) in valve pocket (6) check valve groove (26) department is provided with second check valve (15), second check valve (15) are the circle structure and rely on radial tension to realize the unidirectional circulation function, the coincidence position of second check valve (15) is arranged with check valve inlet port (24) on valve pocket (6) in opposite directions.
4. The intermediate locking VVT oil control valve of claim 1, wherein: a bolt body step hole (32) for installing a plug (2) is formed in an oil outlet (52) of the bolt body (4), and a plug first step (40) for limiting axial displacement of the valve core (1) and a plug second step (41) for limiting axial displacement of the pre-pressing spring seat (18) are arranged in the plug (2).
5. The intermediate locking VVT oil control valve of claim 4, wherein: the valve sleeve is characterized in that the pre-pressing spring seat (18) is sleeved on the periphery of the valve core (1), the pre-pressing spring seat (18) is composed of a spring flange (43) and a guide sleeve (44), the pre-pressing spring (3) is arranged between the spring flange (43) of the pre-pressing spring seat (18) and a valve sleeve first stepped hole (20) of the valve sleeve (6), the spring flange (43) and the valve sleeve first stepped hole (20) are used for limiting axial movement of the pre-pressing spring (3), and the guide sleeve (44) of the pre-pressing spring seat (18) is in contact limit with the outer circle of the valve core (1) and plays a guiding role on the pre-pressing spring (3).
6. The intermediate locking VVT oil control valve of claim 1, wherein: a positioning boss (42) is arranged at the end part of the plug (2), a positioning groove (19) corresponding to the positioning boss (42) is arranged at the end part of the valve sleeve (6), and the valve sleeve (6) is limited to rotate by the cooperation of the positioning boss (42) and the positioning groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334963.9A CN106939807B (en) | 2017-05-12 | 2017-05-12 | Middle locking formula VVT machine oil control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334963.9A CN106939807B (en) | 2017-05-12 | 2017-05-12 | Middle locking formula VVT machine oil control valve |
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| Publication Number | Publication Date |
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| CN106939807A CN106939807A (en) | 2017-07-11 |
| CN106939807B true CN106939807B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710334963.9A Active CN106939807B (en) | 2017-05-12 | 2017-05-12 | Middle locking formula VVT machine oil control valve |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863768B (en) * | 2016-03-31 | 2018-07-17 | 杰锋汽车动力系统股份有限公司 | It is a kind of to be used to set valve arrangement in continuous variable valve timing system |
| US10760454B2 (en) * | 2017-09-19 | 2020-09-01 | ECO Holding 1 GmbH | Oil control valve to control a cam phaser with a spool positioned by an external actuator and having a groove |
| JP2019120230A (en) * | 2018-01-10 | 2019-07-22 | アイシン精機株式会社 | Valve opening/closing timing control device |
| CN108487959A (en) * | 2018-05-07 | 2018-09-04 | 宁波太平洋电控系统有限公司 | The middle camshaft phaser oil channel structures that intermediate locking is adjusted |
| CN115279996B (en) * | 2020-07-23 | 2024-05-10 | 舍弗勒投资(中国)有限公司 | Check valve and central valve |
| CN114076008A (en) * | 2021-12-02 | 2022-02-22 | 杰锋汽车动力系统股份有限公司 | Engine VVT system engine oil control valve and control method thereof |
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