CN109578101A - A kind of mechanical tappets of achievable cylinder deactivation function - Google Patents
A kind of mechanical tappets of achievable cylinder deactivation function Download PDFInfo
- Publication number
- CN109578101A CN109578101A CN201811428524.5A CN201811428524A CN109578101A CN 109578101 A CN109578101 A CN 109578101A CN 201811428524 A CN201811428524 A CN 201811428524A CN 109578101 A CN109578101 A CN 109578101A
- Authority
- CN
- China
- Prior art keywords
- plane
- cam
- tappet body
- cylinder deactivation
- boss
- Prior art date
- 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.)
- Pending
Links
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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
-
- 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
- F01L13/0005—Deactivating valves
-
- 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
- F01L13/0005—Deactivating valves
- F01L2013/001—Deactivating cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a kind of mechanical tappets of achievable cylinder deactivation function, including tappet body, the first plane and the second plane are formed at the top of the tappet body, it closes cylinder cam or high-lift cam is compressed and is connected in first plane, the height difference of first plane and second plane is greater than the difference in diameter for closing cylinder cam and high-lift cam.Compared with prior art, the present invention be by will close cylinder cam or high-lift cam is compressed and is connected in first plane, realize the cylinder deactivation function of mechanical tappets engine, under cylinder deactivation state, close cylinder cam and the first plane contact, valve stroke is zero at this time；Non- cylinder deactivation state, high-lift cam and the first plane contact, engine work.
Description
Technical field
The present invention relates to mechanical tappets technical field, especially a kind of mechanical tappets of achievable cylinder deactivation function.
Background technique
Point out on October 26th, 2016 " energy conservation and new-energy automobile Technology Roadmap " of publication, 2025 and the year two thousand thirty it is riding
Vehicle population mean oil consumption target will be down to respectively 4L/100km and 3.2L/100km on the basis of the year two thousand twenty 5L/100km.In oil
Under the increasingly tighter background of consumption standard, Automobile Enterprises are faced with increasing fuel-economizing pressure.Meanwhile country's appearance is a series of new
The conversion of energy automobile energy consumption, pure electric vehicle power consumption limit value, BEV sales volume weighted factor such as are fallen off at the policies, and traditional vehicle fuel-economizing pressure is very big,
For fuel vehicle, from principle, realizing vehicle fuel-economizing by engine, there are mainly two types of technique directions: first is that improving engine
The thermal efficiency；Second is that allowing engine to operate in lower oil consumption point, such as supercharging technology, cylinder stopping technique etc. by load control system.Its
In, cylinder stopping technique is since with preferable oil-saving effect, (after four cylinder engine carries cylinder stopping technique, comprehensive operating condition vehicle can be realized
4% or more fuel-economizing, 10% or more city cruising mode's fuel-economizing.), is studied and applied by more and more Automobile Enterprises.
There are two types of schemes for the deactivation mechanism of mainstream at present: one is rocking arm type hydraulics, and one is cam moving types.Two kinds of sides
The deactivation mechanism of formula is all only applicable to hydraulic tappet, is shifted by camshaft, and the cam that switching acts on hydraulic rocker, which reaches, to stop
The function of cylinder and not cylinder deactivation.
Summary of the invention
The object of the present invention is to provide a kind of mechanical tappets of achievable cylinder deactivation function, to solve technology in the prior art
Problem.
The present invention provides a kind of mechanical tappets of achievable cylinder deactivation function, including tappet body, the tops of the tappet body
It is formed with the first plane and the second plane, cylinder cam is closed or high-lift cam is compressed and is connected in first plane, described
The height difference of one plane and second plane is greater than the difference in diameter for closing cylinder cam and the high-lift cam.
The mechanical tappets of achievable cylinder deactivation function as described above, wherein preferably, the top projection of the tappet body
There is boss, first plane is formed in the top end surface of the boss, and second plane is formed in the top of the tappet body
End surface.
The mechanical tappets of achievable cylinder deactivation function as described above, wherein preferably, the boss is strip structure,
The both ends of the length direction of the boss are concordant with the outer of the tappet body.
The mechanical tappets of achievable cylinder deactivation function as described above, wherein preferably, the axis of the tappet body extends
Line intersects with the middle line of the length direction of the boss.
The mechanical tappets of achievable cylinder deactivation function as described above, wherein preferably, the outer circumference surface of the tappet body
It is concavely provided with limiting slot.
The mechanical tappets of cylinder deactivation function as described above achievable, wherein preferably, there are two the limiting slot is set,
Two limiting slots are symmetrically set in the two sides of the length direction of the boss.
Compared with prior art, the present invention will be by that will close cylinder cam or high-lift cam compresses and is connected to first plane
On, it realizes the cylinder deactivation function of mechanical tappets engine, under cylinder deactivation state, closes cylinder cam and the first plane contact, at this time valve liter
Journey is zero；Non- cylinder deactivation state, high-lift cam and the first plane contact, engine work.
Detailed description of the invention
Fig. 1 is the axonometric drawing of tappet body；
Fig. 2 is the assembling schematic diagram of tappet body and cylinder cap；
Fig. 3 is tappet body under cylinder deactivation state and closes cylinder cam assembling schematic diagram；
Fig. 4 is tappet body and high-lift cam assembling schematic diagram under non-cylinder deactivation state.
Description of symbols: 1- tappet body, the first plane of 2-, the second plane of 3-, 4- close cylinder cam, 5- high-lift cam,
6- boss, 7- limiting slot, 8- spacing block set.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, for explaining only the invention, and cannot be construed to
Limitation of the present invention.
As shown in Figures 1 to 4, the embodiment provides a kind of mechanical tappets of achievable cylinder deactivation function, including
Tappet body 1, tappet body 1 are cylindrical structure, and what tappet body 1 was reciprocally gone up and down is fixed in cylinder head tappet mounting hole, described
The top of tappet body 1 is formed with the first plane 2 and the second plane 3, close cylinder cam 4 or high-lift cam 5 compress be connected to it is described
In first plane 2, the height difference of first plane 2 and second plane 3 closes cylinder cam 4 greater than described in and high lift is convex
The difference in diameter of wheel 5.
It compresses and is connected in first plane 2 by the way that cylinder cam 4 or high-lift cam 5 will be closed, when camshaft rotates, close
Cylinder cam 4 or high-lift cam 5 only act upon in the first plane 2 of mechanical tappets, are shifted by solenoid valve to camshaft,
It closes cylinder cam 4 and high-lift cam 5 toggles, contacted with the first plane 2 of mechanical tappets, to realize cylinder deactivation of engine function
Can, under cylinder deactivation state, closes cylinder cam 4 and contacted with the first plane 2, valve stroke is zero at this time；Non- cylinder deactivation state, high-lift cam
5 contact with the first plane 2, engine work.
Further, the top of the tappet body 1 is convexly equipped with boss 6, and boss 6 and tappet body 1 are integrally formed, whole to improve
Body intensity, first plane 2 are formed in the top end surface of the boss 6, and second plane 3 is formed in the tappet body 1
Top end surface.The height difference of first plane 2 and second plane 3 is the height of boss 6, and the height of boss 6 is set
It is calculated as being greater than the difference in diameter for closing cylinder cam 4 and high-lift cam 5, in this way can be to avoid under cylinder deactivation state, high lift
The top end surface of cam 5 and tappet body 1, which is formed, interferes.
Further, the boss 6 is strip structure, the both ends of the length direction of the boss 6 and the tappet body 1
Outer is concordant.The width of boss 6 is adapted with the wheel width for closing cylinder cam 4 or high-lift cam 5, the length direction of the boss 6
Both ends it is concordant with the outer of the tappet body 1, to facilitate machine-shaping, and provide enough cam contact length.
Further, the boss 6 be set to the tappet body 1 center, the axis extended line of the tappet body 1 with
The middle line of the length direction of the boss 6 intersects, and such 1 stress of tappet body is vertically average, the smooth stabilization of lifting process.
Since in engine operation process, there are irregular rotations for mechanical tappets, therefore, outside the tappet body 1
Periphery is concavely provided with limiting slot 7, corresponding that spacing block set 8 is designed at cylinder head tappet mounting hole, and 8 inlay card of spacing block set is matched
Together in limitation turning effort in limiting slot 7, is played, it is able to achieve while guaranteeing mechanical tappets without spin and closes cylinder cam 4 and promotion
Effective switching of journey cam 5.
Further, there are two the limiting slot 7 is set, two limiting slots 7 are symmetrically set in the length side of the boss 6
To two sides, those skilled in the art can increase and decrease the number and distribution of limiting slot 7 according to actual needs, limiting slot 7 is set as
Symmetrical two, the needs that limitation tappet body 1 rotates not only are met, but also easily processed into type, cost reduces.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (6)
1. a kind of mechanical tappets of achievable cylinder deactivation function, including tappet body, it is characterised in that: the top of the tappet body is formed
There are the first plane and the second plane, closes cylinder cam or high-lift cam is compressed and is connected in first plane, described first is flat
The height difference of face and second plane is greater than the difference in diameter for closing cylinder cam and the high-lift cam.
2. the mechanical tappets of achievable cylinder deactivation function according to claim 1, it is characterised in that: the top of the tappet body
It is convexly equipped with boss, first plane is formed in the top end surface of the boss, and second plane is formed in the tappet body
Top end surface.
3. the mechanical tappets of achievable cylinder deactivation function according to claim 2, it is characterised in that: the boss is bar shaped knot
Structure, the both ends of the length direction of the boss are concordant with the outer of the tappet body.
4. the mechanical tappets of achievable cylinder deactivation function according to claim 2, it is characterised in that: the axis of the tappet body
Extended line intersects with the middle line of the length direction of the boss.
5. the mechanical tappets of achievable cylinder deactivation function according to claim 2, it is characterised in that: the outer circle of the tappet body
Circumferential surface is concavely provided with limiting slot.
6. the mechanical tappets of achievable cylinder deactivation function according to claim 5, it is characterised in that: the limiting slot is equipped with two
A, two limiting slots are symmetrically set in the two sides of the length direction of the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428524.5A CN109578101A (en) | 2018-11-27 | 2018-11-27 | A kind of mechanical tappets of achievable cylinder deactivation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428524.5A CN109578101A (en) | 2018-11-27 | 2018-11-27 | A kind of mechanical tappets of achievable cylinder deactivation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109578101A true CN109578101A (en) | 2019-04-05 |
Family
ID=65924579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811428524.5A Pending CN109578101A (en) | 2018-11-27 | 2018-11-27 | A kind of mechanical tappets of achievable cylinder deactivation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578101A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07317518A (en) * | 1993-08-25 | 1995-12-05 | Otix:Kk | Valve system having pause mechanism for internal combustion engine |
| CN2627233Y (en) * | 2003-05-21 | 2004-07-21 | 上海东维燃油喷射有限公司 | Tappet unit with locating slot and without ferrule |
| CN201763491U (en) * | 2010-09-10 | 2011-03-16 | 无锡锡州机械有限公司 | Tappet body structure for automobile engine |
| CN201763492U (en) * | 2010-09-10 | 2011-03-16 | 无锡锡州机械有限公司 | Tappet body component with lubrication structure |
| CN108487962A (en) * | 2018-06-01 | 2018-09-04 | 浙江正奥汽配有限公司 | A kind of valve control apparatus of engine |
-
2018
- 2018-11-27 CN CN201811428524.5A patent/CN109578101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07317518A (en) * | 1993-08-25 | 1995-12-05 | Otix:Kk | Valve system having pause mechanism for internal combustion engine |
| CN2627233Y (en) * | 2003-05-21 | 2004-07-21 | 上海东维燃油喷射有限公司 | Tappet unit with locating slot and without ferrule |
| CN201763491U (en) * | 2010-09-10 | 2011-03-16 | 无锡锡州机械有限公司 | Tappet body structure for automobile engine |
| CN201763492U (en) * | 2010-09-10 | 2011-03-16 | 无锡锡州机械有限公司 | Tappet body component with lubrication structure |
| CN108487962A (en) * | 2018-06-01 | 2018-09-04 | 浙江正奥汽配有限公司 | A kind of valve control apparatus of engine |
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| CB02 | Change of applicant information | ||
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |