CN202883036U - Mechanical type continuous variable valve mechanism of engine - Google Patents
Mechanical type continuous variable valve mechanism of engine Download PDFInfo
- Publication number
- CN202883036U CN202883036U CN2012201376723U CN201220137672U CN202883036U CN 202883036 U CN202883036 U CN 202883036U CN 2012201376723 U CN2012201376723 U CN 2012201376723U CN 201220137672 U CN201220137672 U CN 201220137672U CN 202883036 U CN202883036 U CN 202883036U
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- Prior art keywords
- valve
- fork
- continuous variable
- engine
- variable valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L13/0042—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams being profiled in axial and radial direction
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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
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
A mechanical type continuous variable valve mechanism of engine comprises the following components: valves, valve springs, a ball bearing, and a three-dimensional cam which can change lift stroke and opening/closing time of the valve. The contour molded line of the cross section of the three-dimensional cam changes continuously and smoothly along the axial direction of a camshaft and corresponds with different working conditions of the engine. The three-dimensional cam can perform axial movement. The valve is driven by the three-dimensional cam. Additionally the mechanical type continuous variable valve mechanism of the engine is provided with the following components: a swingable swinging arm, a rotatable rack bar, a reciprocatable rack, an axial thrust bearing, a reset spring, a top bead and an adjusting rod. The swinging arm is fixedly connected with the rack bar. The rack bar is provided with a gear which is in engagement match with the rack. The rack drives the three-dimensional cam to move axially through the axial thrust bearing. The mechanical type continuous variable valve mechanism of the engine is characterized in that: a fork-shaped block is equipped between the ball bearing and the valve; the fork-shaped block is provided with two fork handles; and each fork handle correspondingly drive one valve. Therefore the mechanism type continuous variable valve mechanism of the engine can simultaneously drive two valves.
Description
Technical field
The utility model belongs to engine valve phase control field, relates to especially the mechanism of a kind of engine continuous variable valve-control and lift, more specifically to a kind of mechanical engine continuous variable valve mechanism that adopts mechanical type to regulate and control.
Background technique
As everyone knows, port timing is very large to the performance impact of motor, and best valve-control is different along with the working conditions change of motor.In order to adapt to Under Different Work Condition of Engine to the requirement of gas handling system, Chinese patent ZL200920194302.1 has proposed a kind of new work engine changing air valve phase mechanism, it comprises valve, valve spring, ball and threedimensional cam, also have in addition support and driving wheel, the profile molded line of the transverse section of described threedimensional cam is along the continuously glossily variation and corresponding from the different operating modes of motor of axial direction of camshaft, threedimensional cam is opened by ball compressing valve, valve spring makes valve-closing, be provided with in addition a swing arm that can swing, a rotary ratch, the tooth bar that can move back and forth, described swing arm and ratch are fastenedly connected, be provided with the wheel and rack engagement fit on the described ratch, being provided with feather key on the threedimensional cam cooperates with described driving wheel, the driven wheel drive of threedimensional cam and around the axis rotation of threedimensional cam on the one hand, threedimensional cam is by described rack drives and move back and forth along the axis of threedimensional cam on the other hand, control thus and change the actual molded line of threedimensional cam participation work, and therefore can in time regulate and control according to the actual conditions of motor phase place and the valve lift of its distribution device.But, above-mentioned distribution device still has deficiency, be mainly manifested in above-mentioned threedimensional cam and can only regulate and control an intake valve by ball, and the rotating speed of motor is more and more higher at present, in order to suck fresh charge as much as possible in the period at limited intake stroke, motor often adopts a more than intake valve, and the scheme that provides of patent ZL200920194302.1 obviously can not meet the demands thus.
Summary of the invention
The utility model provides a kind of mechanical engine mechanism capable of continuously changing valve phase for the existing deficiency of prior art, and its purpose is to realize that a threedimensional cam drives two valves, and realizes the adjustable continuously of engine valve phase place and lift.
For achieving the above object, the technical solution adopted in the utility model is: a kind of mechanism capable of continuously changing valve phase for motor is provided, comprise valve, valve spring, ball and the threedimensional cam that can change valve lift and open and close the moment, the profile molded line of the transverse section of this threedimensional cam is along the continuously glossily variation and corresponding from the different operating modes of motor of axial direction of camshaft, described threedimensional cam can move axially, described valve is driven by this threedimensional cam, be provided with in addition a swing arm that can swing, a rotary ratch, the tooth bar that can move back and forth, an axial thrust bearing, a Returnning spring, a decorative pearl on top of an official cap and an adjustable lever, described swing arm and ratch are fastenedly connected, be provided with gear and described tooth bar engagement fit on the ratch, tooth bar drives above-mentioned threedimensional cam by described axial thrust bearing and moves axially; It is characterized in that being provided with between ball and valve a fork-shaped piece, described fork-shaped piece has two fork handles, and each fork drives a valve to correspondence.
Be provided with guide rod on the above-mentioned fork-shaped piece, described guide rod is slidingly matched with the guide pin bushing or the guide hole that are located on the engine cylinder head.
The axis of the guide rod on the above-mentioned fork-shaped piece is parallel with the shaft axis of valve.
Be provided with guiding groove on the above-mentioned fork-shaped piece, described guiding groove is slidingly matched with the lead key or the guide rail that are located on the motor.
The utility model adopts the fork-shaped block structure, and threedimensional cam can drive two valve motion by ball and fork-shaped piece as a result, therefore both can regulate and control phase place and the lift of valve, has realized again that a threedimensional cam regulates and control the purpose of two valves simultaneously simultaneously.
Description of drawings
Fig. 1 is the schematic layout pattern of a kind of mechanical engine continuous variable valve of the utility model mechanism;
Fig. 2 is the ratch of a kind of mechanical engine continuous variable valve shown in Figure 1 mechanism and the schematic diagram of tooth bar engagement fit;
Fig. 3 is the molded line schematic diagram of the corresponding working conditions of different engines of a kind of mechanical engine continuous variable valve mechanism's threedimensional cam shown in Figure 1.
Embodiment
The below is further described the utility model with specific embodiment, referring to Fig. 1-3:
A kind of mechanical engine mechanism capable of continuously changing valve phase, comprise valve 1, valve spring 2, ball 3 and the threedimensional cam 4 that can change valve lift and open and close the moment, the axis of described threedimensional cam 4 is O1, the profile molded line of the transverse section of threedimensional cam 4 is along the continuously glossily variation and corresponding from the different operating modes of motor of direction of axes O 1, and threedimensional cam 4 can rotate around its axes O 1 on the one hand and can move back and forth along its axes O 1 on the other hand; Be provided with a swing arm that can swing 9, one decorative pearls on top of an official cap 10 of 8, one Returnning springs of 7, one axial thrust bearings of 6, one tooth bars that can move back and forth of 5, one rotary ratch and adjustable lever 11; Described swing arm 5 is fastenedly connected with ratch 6, between swing arm 5 and support 12, reduction torsion spring 13 can be set, the effect of torsion spring 13 is that auxiliary swing arm 5 and ratch 6 reset, it is characterized in that between ball 3 and valve 1, being provided with a fork-shaped piece 33, described fork-shaped piece 33 has two forks 33a, each fork is valve 1 of the corresponding driving of 33a, the keying of described valve 1 is by threedimensional cam 4, ball 3, fork-shaped piece 33 and valve spring 2 controls, need to prove, frame 12 can be that the part of motor body also can be the member that independent component or a category seemingly act on, ratch 6 rotating supports are on support 12, be provided with gear 66 and described tooth bar 7 engagement fit on the ratch 6, tooth bar 7 sliding bearings are on support 12, it drives above-mentioned threedimensional cam 4 indirectly by described axial thrust bearing 8, wherein axial thrust bearing 8 is arranged between tooth bar 7 and the threedimensional cam 4, it must be noted that, tooth bar 7 also can directly contact and drive threedimensional cam 4; In addition, in order to prevent that the rotation around self axis from appearring in tooth bar 7 in movement process, can offer locking groove 77 thereon, be equipped with simultaneously stop nail 777, described stop nail 777 be arranged on the support 12 and with locking groove 77 can relative sliding, need to prove that stop nail 777 can directly put in the locking groove 77, also can allow this stop steel ball and locking groove come in contact by hold out against a stop steel ball in its termination, the same like this purpose that can play stop; Similarly threedimensional cam 4 also is bearing on the support 12, offering feather key 14 on it cooperates with driving wheel 15, wherein feather key 14 can be spline, protruding key or slide rail etc., driving wheel 15 then can be driving sprocket wheel or actuation gear etc., on the one hand threedimensional cam 4 is driven via feather key 14 takes turns 15 and drives and rotate, and open (closing by valve spring 2 of valve 1 finished) by its molded line compressing ball 3 and then compressing valve 1, threedimensional cam 4 can produce along the axis of axes O 1 direction with respect to driving wheel 15 and move on the other hand, concrete situation is at first to stir swing arm 5 according to the actual conditions of motor, and then drive ratch 6 rotates, driving tooth bar 7 by ratch 6 by gear 66 again moves back and forth, 7 of tooth bars pass through axial thrust bearing 8 Indirect driven threedimensional cams 4 and produce axial displacements, can certainly directly drive threedimensional cam 4 by tooth bar 7 moves axially, regulate thus and control the contact position of threedimensional cam 4 and ball 3, driving valve 1 by ball 3 at last opens, that is threedimensional cam 4 can change the molded line of its real work as required, and the effect of above-mentioned valve spring 2 is to make valve 1 that valve 1 and valve seat sealing are closed; The swing of swing arm 5 can be by motor driving, also can be by artificial its swing of directly control, and can directly drive when adopting motor driving and also can pass through behind the speed reducer again Indirect driven; Adjustable lever 11 is applied to an end of Returnning spring 9 by sliding plug 17 in addition, the other end of Returnning spring 9 contacts with threedimensional cam 4, effect is to assist ratch 6 and tooth bar 7 that threedimensional cam 4 is resetted and eliminate play between them, wherein adjustable lever 11 be connected with support 12 by screw thread and with a locking nut 16 to its positioning and locking, adjustable lever 11 can and sliding plug 17 direct effects also can be by the decorative pearl on top of an official cap 10 indirectly-actings between them;
In order to guarantee 33 motions of fork-shaped piece steadily, can guide rod 33b be set at fork-shaped piece 33, described guide rod 33b is slidingly matched with the guide pin bushing or the guide hole that are located on the engine cylinder head, guide rod 33b does straight reciprocating motion under the constraint of guide pin bushing or guide hole, its optimal layout is that the axis of guide rod 33b is parallel with the shaft axis of valve 1.
Also the guiding groove (not shown) can be set on the above-mentioned fork-shaped piece 33, described guiding groove is slidingly matched with the lead key or the guide rail that are located on the motor.
Need to prove, the profile molded line of the transverse section of threedimensional cam 4 is to change glossily continuously along the direction of axes O 1, and corresponding from the different operating modes of motor, what Fig. 3 provided is the section variation schematic diagram of threedimensional cam 4, what wherein A section cam profile was corresponding is high engine speeds or high load working condition, what B section cam profile was corresponding is medium engine speed or middle load condition, and C section cam profile is then corresponding to be low engine speed or running on the lower load.
Obviously, the utility model adopts fork-shaped piece 33 structures, can drive simultaneously two valves 1 to 33a by two forks on it.
Claims (4)
1. mechanical engine continuous variable valve mechanism, it comprises valve, valve spring, ball and the threedimensional cam that can change valve lift and open and close the moment, the profile molded line of the transverse section of this threedimensional cam is along the continuously glossily variation and corresponding from the different operating modes of motor of axial direction of camshaft, described threedimensional cam can move axially, described valve is driven by this threedimensional cam, be provided with in addition a swing arm that can swing, a rotary ratch, the tooth bar that can move back and forth, an axial thrust bearing, a Returnning spring, a decorative pearl on top of an official cap and an adjustable lever, described swing arm and ratch are fastenedly connected, and are provided with gear and described tooth bar engagement fit on the ratch, and tooth bar drives above-mentioned threedimensional cam by described axial thrust bearing and moves axially; It is characterized in that being provided with between ball and valve a fork-shaped piece, described fork-shaped piece has two fork handles, and each fork drives a valve to correspondence.
2. a kind of mechanical engine continuous variable valve as claimed in claim 1 mechanism is characterized in that being provided with guide rod on the described fork-shaped piece, and described guide rod is slidingly matched with the guide pin bushing or the guide hole that are located on the engine cylinder head.
3. a kind of mechanical engine continuous variable valve as claimed in claim 2 mechanism is characterized in that the axis of the guide rod on the described fork-shaped piece is parallel with the shaft axis of valve.
4. a kind of mechanical engine continuous variable valve as claimed in claim 1 mechanism is characterized in that being provided with guiding groove at described fork-shaped piece, and described guiding groove is slidingly matched with the lead key or the guide rail that are located on the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201376723U CN202883036U (en) | 2012-04-01 | 2012-04-01 | Mechanical type continuous variable valve mechanism of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201376723U CN202883036U (en) | 2012-04-01 | 2012-04-01 | Mechanical type continuous variable valve mechanism of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883036U true CN202883036U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201376723U Expired - Fee Related CN202883036U (en) | 2012-04-01 | 2012-04-01 | Mechanical type continuous variable valve mechanism of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606244A (en) * | 2012-04-01 | 2012-07-25 | 江门市硕普科技开发有限公司 | Mechanical type continuously variable valve mechanism of engine |
| CN103711539A (en) * | 2014-01-13 | 2014-04-09 | 浙江大学 | Assembly capable of changing opening duration of engine valve |
-
2012
- 2012-04-01 CN CN2012201376723U patent/CN202883036U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606244A (en) * | 2012-04-01 | 2012-07-25 | 江门市硕普科技开发有限公司 | Mechanical type continuously variable valve mechanism of engine |
| CN103711539A (en) * | 2014-01-13 | 2014-04-09 | 浙江大学 | Assembly capable of changing opening duration of engine valve |
| CN103711539B (en) * | 2014-01-13 | 2016-04-06 | 浙江大学 | A kind ofly can open to engine valve the assembly that the duration changes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shuopu Tech Development Co., Ltd., Jiangmen City Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shuopu Tech Development Co., Ltd., Jiangmen City Document name: Notification of Termination of Patent Right |
|
| 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: 20130417 Termination date: 20170401 |