CN206889033U - Cam and the engine with the cam - Google Patents
Cam and the engine with the cam Download PDFInfo
- Publication number
- CN206889033U CN206889033U CN201720666748.4U CN201720666748U CN206889033U CN 206889033 U CN206889033 U CN 206889033U CN 201720666748 U CN201720666748 U CN 201720666748U CN 206889033 U CN206889033 U CN 206889033U
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- cam
- section
- breeze way
- valve
- cornerite
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Abstract
The utility model discloses a kind of cam and with the cam engine.The cam is admission cam, and the molded line of the outer peripheral face of the cam includes basic circle section, unlatching breeze way, unlatching section, closing section and the closing breeze way being sequentially connected, and the cornerite of each opened in breeze way and the closing breeze way is not less than 30 °.According to cam of the present utility model, breeze way is opened by setting and closes breeze way, valve is quickly opened, slowly closing, so as to reach raising intake efficiency, reduction valve actuating mechanism flies off the purpose of tendency.The trend for closing that breeze way can also reduce valve exit flow field, reduction air valve drop bounces is set simultaneously, so as to improve the high speed performance of valve actuating mechanism.
Description
Technical field
The utility model is related to automotive field, in particular to a kind of cam and with the cam engine.
Background technology
Valve actuating mechanism controls the air inlet system and exhaust system of engine, directly affects the dynamic property, economy and reliability of engine.
Admission cam molded line controls the lifting curve of inlet valve, and traditional admission cam molded line is mostly symmetrical line, convex so as to cause
Wheel can not be unable to reach preferable charging efficiency effectively using different rules when valve opening and closing.In addition, conventional cam
The adjustable parameters of molded line are few, to valve actuating mechanism fly off and the optimization space of air valve drop knock-on is limited, and to distribution
The high speed performance of mechanism adversely affects.
Utility model content
In view of this, the utility model is directed to a kind of cam, to improve the gentle slow process of the unlatching of valve.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of cam, the cam are admission cam, and the molded line of the outer peripheral face of the cam includes the basic circle being sequentially connected
Section, open breeze way, open section, close section and close breeze way, it is described open breeze way and it is described close breeze way in it is every
The cornerite of one is not less than 30 °.
According to some embodiments of the utility model, the cornerite for opening breeze way is 30 ° -45 °, described to close buffering
The cornerite of section is 30 ° -40 °.
According to some embodiments of the utility model, the cornerite for opening breeze way is more than the bag of the closing breeze way
Angle.
According to some embodiments of the utility model, the central angle of the basic circle section is 150 ° -160 °.
According to some embodiments of the utility model, the cornerite for opening section is less than the cornerite of the closing section.
Further, the cornerite for opening section is 60 ° -65 °, and the cornerite for closing section is 65 ° -70 °.
Valve lift amount corresponding to the end for opening breeze way is 0.18-0.22mm.
According to some embodiments of the utility model, radius corresponding to the basic circle section is 18-22mm.
According to some embodiments of the utility model, the cam has cam longitudinal centre line, and the basic circle section is crossed over
And the both sides of the cam longitudinal centre line are symmetrically distributed in, and the unlatching section and the closing section are with the cam longitudinal direction
Heart line is line of demarcation.
According to some embodiments of the utility model, the unlatching section seamlessly transits with the unlatching breeze way.
Relative to prior art, cam described in the utility model has the advantage that：
According to cam described in the utility model, breeze way and closing breeze way are opened by setting, enables valve fast
Speed is opened, slowly closing, and so as to reach raising intake efficiency, reduction valve actuating mechanism flies off the purpose of tendency.Closing is set simultaneously
Breeze way can also reduce valve exit flow field, reduce the trend of air valve drop knock-on, so as to improve the high speed performance of valve actuating mechanism.
Another purpose of the present utility model is to propose a kind of engine, and the engine includes valve actuating mechanism, described
Valve actuating mechanism includes above-mentioned cam.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the exploded perspective view of valve actuating mechanism；
Fig. 2 is the assembling schematic diagram of valve actuating mechanism；
Fig. 3 is the schematic diagram of the cam of the utility model embodiment.
Description of reference numerals：
Valve actuating mechanism 1000, camshaft 101, cam 102, elasticity reset device 103, mandrel 104, eccentric wheel 105, driving
Motor 106, eccentric axle assembly 107, regulating arm 108, middle arm shaft 109, middle swing arm 110, middle swing arm roller 111, company
Connect arm 112, fulcrum bearing 113, linking arm steady pin 114, valve rocker 115, valve 116；
Basic circle section 701, breeze way 702 is opened, section 703 is opened, closes section 704, closes breeze way 705.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
Valve actuating mechanism 1000 is described in detail with reference first to Fig. 1 and Fig. 2.
Valve actuating mechanism 1000 can include valve 116, middle swing arm 110, eccentric axle assembly 107, camshaft 101, driving
Motor 106, fulcrum bearing 113 etc..The valve actuating mechanism 1000 can be used for the opening and closing for controlling inlet valve 116.
Shown referring to Figures 1 and 2, the top of valve 116 is provided with valve rocker 115, on valve rocker 115 rotationally
It is provided with valve roller.Valve 116 can along valve center line move up and down with open or close the air inlet in cylinder head (with
It is schematically illustrate exemplified by inlet valve).Middle swing arm 110 is arranged between valve 116 and camshaft 101, the bottom of middle swing arm 110
With driving face, driving face is bonded with valve roller.The top of middle swing arm 110 has a middle swing arm roller 111, and in
Between be equipped with middle arm shaft 109 in swing arm 110, middle swing arm 110 can be swung around middle arm shaft 109.
With reference to shown in Fig. 1 and Fig. 2, cam 102 is arranged with camshaft 101, cam 102 pastes with middle swing arm roller 111
Close.Cam 102 rotates with camshaft 101, and camshaft 101 can be tied with the bent axle of engine by timing sprocket or Timing Belt etc.
Structure links.Fulcrum bearing 113 is fixed on cylinder cap, and linking arm steady pin 114 is fixed in fulcrum bearing 113, linking arm steady pin 114
It is rotatablely connected with one end (lower end in such as Fig. 1) of linking arm 112, the other end (upper end in such as Fig. 1) of linking arm 112 is with
Between arm shaft 109 be rotatablely connected.
Eccentric axle assembly 107 includes mandrel 104 and the eccentric wheel 105 being set on mandrel 104, eccentric wheel 105 and mandrel
104 eccentric settings, one end (such as stub end) of regulating arm 108 are set in eccentric wheel 105, the other end (such as microcephaly of regulating arm 108
End) it is rotatablely connected with middle arm shaft 109.Elasticity reset device 103 is used to provide elastic reset power to middle swing arm 110, makes
Swing arm roller 111 is bonded always with cam 102 among obtaining, and prevents middle swing arm 110 from flying off.Motor 106 is used to drive core
Axle 104 rotates, and such as passes through worm-and-wheel gear.
When valve actuating mechanism 1000 works, cam 102 rotates with camshaft 101, and cam 102 periodically drives middle put
Arm 110 is swung around middle arm shaft 109, the driving face driving valve roller of the middle bottom of swing arm 110 so that valve 116
Moved downward along valve center line, so as to open the air inlet in cylinder head, realize air inlet.Wherein, valve 116 can pass through valve
Spring is resetted, and middle swing arm 110 can be resetted by elasticity reset device 103.
When needing to adjust 116 lift of valve, motor 106 rotates clockwise or counterclockwise with moving mandrel 104, by
This eccentric axle assembly 107 drives middle swing arm 110 to be swung around the central axis of linking arm steady pin 114 by regulating arm 108,
So as to change the contact position in the driving face of middle swing arm 110 and valve roller, and then continuously variably adjust 116 liters of valve
Cheng Liang.
Wherein, the central axis of linking arm steady pin 114 can with valve roller when air inlet (valve 116 close)
Mandrel line overlaps.
Describe cam 102 of the present utility model in detail below with reference to Fig. 3 and in conjunction with the embodiments.
It is admission cam 102 according to the cam 102 of the utility model embodiment shown in reference picture 3, the periphery of cam 102
Basic circle section 701, unlatching breeze way 702, unlatching section 703, closing section 704 and the closing that the molded line in face can include being sequentially connected are slow
Rush section 705.Opening breeze way 702 can enable valve 116 quickly open, and so as to improve intake efficiency, close breeze way 705
The slowly closing of valve 116 can be made, so as to be effectively improved the closing noise of valve 116.
Basic circle section 701 and open breeze way 702 between seamlessly transit, it is possible to prevente effectively from occur the lift of valve 116 mutation,
The phenomenon that noise level improves.
Further, open breeze way 702 and the cornerite of each closed in breeze way 705 is not less than 30 °.Cam
102 use asymmetric molded line, so as to be advantageous to improve the intake efficiency of engine.
According to the cam 102 of the utility model embodiment, breeze way 702 and closing breeze way 705 are opened by setting, is made
Valve 116 can be opened quickly, slowly closing, and tendency is flown off so as to reach raising intake efficiency, reduce valve actuating mechanism 1000
Purpose.Set simultaneously close breeze way 705 can also reduce valve 116 take a seat power, reduce valve 116 and take a seat the trend of knock-on,
So as to improve the high speed performance of valve actuating mechanism 1000.
The cornerite β for opening breeze way 702 is 30 ° -45 °.The unlatching breeze way 702 of big cornerite can make motion more flat
It is sliding, the mutation of the lift of valve 116 is avoided, valve 116 is advantageously reduced and opens noise.
The cornerite ε for closing breeze way 705 is 30 ° -40 °.When closing breeze way 705, valve 116 is taken a seat closing, big bag
The closing breeze way 705 at angle can extend the process of the closing of valve 116, reduce valve 116 and take a seat power, it is anti-to avoid the occurrence of valve 116
Jump etc. it is abnormal close phenomenon, be effectively improved valve 116 and take a seat noise and the high speed performance of valve actuating mechanism 1000.
The cornerite β for opening breeze way 702 is more than the cornerite ε for closing breeze way 705.Buffered by the unlatching for designing big cornerite
Section 702 and closing breeze way 705, the high-speed motion performance of engine is improved, the mutation of the lift of valve 116 is avoided, reduces
Noise.
The central angle alpha of basic circle section 701 is 150 ° -160 °.
The cornerite γ for opening section 703 is less than the wrap angle for closing section 704, thus valve 116 can be enable quickly to open and delay
It is slow to close, be advantageous to improve intake efficiency, and valve actuating mechanism 1000 is flown off when the extension for closing section 704 is advantageous to weaken high speed
Tendency so that valve actuating mechanism 1000 meets higher engine speed demand.
Further, the cornerite γ for opening section 703 is 60 ° -65 °.
The wrap angle for closing section 704 is 65 ° -70 °.
The lift amount of valve 116 corresponding to opening the end of breeze way 702 is 0.18-0.22mm.For example, open breeze way
At the end of 702, the lift amount of valve 116 is 0.2mm.The gap of the meeting successive elimination of breeze way 702 valve 116 is opened, weakens and is eliminating
The impact of valve actuating mechanism 1000 during gap, be advantageous to improve the reliability of valve actuating mechanism 1000, improve valve actuating mechanism
1000 noise level.It is smaller to open the cornerite β of breeze way 702, valve 116 can be made to realize quick unlatching, it is low to engine
Intake efficiency during rotating speed has more apparent improvement, is advantageous to improve the low-speed performance of engine.
Radius corresponding to basic circle section 701 is 18-22mm.
Cam 102 has the longitudinal centre line of cam 102, and basic circle section 701 is crossed over and is symmetrically distributed in the longitudinal center of cam 102
The both sides of line, and open section 703 and close section 704 using the longitudinal centre line of cam 102 as line of demarcation.
Open section 703 and seamlessly transitted with opening breeze way 702, can further avoid the occurrence of the mutation of the lift of valve 116, make an uproar
The larger phenomenon of sound.
According to the engine of the utility model another aspect embodiment, including above-mentioned valve actuating mechanism 1000, further,
Valve actuating mechanism 1000 includes the cam 102 of above-described embodiment.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (11)
- A kind of 1. cam (102), it is characterised in that the cam (102) is admission cam (102), the cam (102) it is outer The molded line of side face include be sequentially connected basic circle section (701), open breeze way (702), open section (703), close section (704) and Breeze way (705) is closed, it is described to open breeze way (702) and the cornerite of each closed in breeze way (705) not Less than 30 °.
- 2. cam (102) according to claim 1, it is characterised in that it is described open breeze way (702) cornerite for 30 °- 45 °, the cornerite for closing breeze way (705) is 30 ° -40 °.
- 3. cam (102) according to claim 1, it is characterised in that the cornerite for opening breeze way (702) is more than institute State the cornerite for closing breeze way (705).
- 4. cam (102) according to claim 1, it is characterised in that the central angle of the basic circle section (701) be 150 °- 160°。
- 5. cam (102) according to claim 1, it is characterised in that the cornerite for opening section (703) is less than the pass Close the cornerite of section (704).
- 6. cam (102) according to claim 5, it is characterised in that the cornerite for opening section (703) is 60 ° -65 °, The cornerite for closing section (704) is 65 ° -70 °.
- 7. cam (102) according to claim 2, it is characterised in that corresponding to the end for opening breeze way (702) Valve (116) lift amount is 0.18-0.22mm.
- 8. cam (102) according to claim 1, it is characterised in that radius corresponding to the basic circle section (701) is 18- 22mm。
- 9. cam (102) according to claim 1, it is characterised in that the cam (102) has cam (102) longitudinal direction Center line, the basic circle section (701), which is crossed over, is simultaneously symmetrically distributed in the both sides of the cam (102) longitudinal centre line, and described opens Section (703) and the closing section (704) are opened using the cam (102) longitudinal centre line as line of demarcation.
- 10. cam (102) according to claim 1, it is characterised in that the unlatching section (703) buffers with described open Section (702) seamlessly transits.
- 11. a kind of engine, it is characterised in that including valve actuating mechanism (1000), the valve actuating mechanism (1000) is included according to power Profit requires the cam (102) any one of 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720666748.4U CN206889033U (en) | 2017-06-09 | 2017-06-09 | Cam and the engine with the cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720666748.4U CN206889033U (en) | 2017-06-09 | 2017-06-09 | Cam and the engine with the cam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889033U true CN206889033U (en) | 2018-01-16 |
Family
ID=61318559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720666748.4U Active CN206889033U (en) | 2017-06-09 | 2017-06-09 | Cam and the engine with the cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677572A (en) * | 2020-07-29 | 2020-09-18 | 重庆鑫源动力制造有限公司 | Air inlet camshaft, exhaust camshaft and engine |
| CN115263483A (en) * | 2022-07-01 | 2022-11-01 | 奇瑞汽车股份有限公司 | Cam, camshaft and engine |
-
2017
- 2017-06-09 CN CN201720666748.4U patent/CN206889033U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677572A (en) * | 2020-07-29 | 2020-09-18 | 重庆鑫源动力制造有限公司 | Air inlet camshaft, exhaust camshaft and engine |
| CN111677572B (en) * | 2020-07-29 | 2021-11-23 | 重庆鑫源动力制造有限公司 | Air inlet camshaft, exhaust camshaft and engine |
| CN115263483A (en) * | 2022-07-01 | 2022-11-01 | 奇瑞汽车股份有限公司 | Cam, camshaft and engine |
| CN115263483B (en) * | 2022-07-01 | 2024-03-26 | 奇瑞汽车股份有限公司 | Cam, cam shaft and engine |
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