CN107701253B - A kind of rocker arm body - Google Patents
A kind of rocker arm body Download PDFInfo
- Publication number
- CN107701253B CN107701253B CN201710941689.1A CN201710941689A CN107701253B CN 107701253 B CN107701253 B CN 107701253B CN 201710941689 A CN201710941689 A CN 201710941689A CN 107701253 B CN107701253 B CN 107701253B
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- lift
- needle bearing
- inner rocker
- arm
- 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.)
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
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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
- 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
- F01L13/0015—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
- F01L13/0021—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 by modification of rocker arm ratio
-
- 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)
Abstract
A kind of rocker arm body comprising: inner rocker arm and outer rocker arm and the camshaft in portion disposed thereon through connecting shaft rotation connection, outer rocker arm is T-shaped and is rotatably connected to basic circle needle bearing in its trailing arm ontology；Inner rocker arm in rectangle type and positioned at two outside of trailing arm of outer rocker arm or so and includes: low lift inner rocker arm and high lift inner rocker arm, rotation connection is disposed with low lift needle bearing in low lift inner rocker arm, and rotation connection is disposed with high lift needle bearing in high lift inner rocker arm；Cam portion on camshaft includes: positioned at middle part and the basic circle cam that connect with basic circle needle bearing, lift cams with being located at two sides and connecting simultaneously with low lift needle bearing and high lift needle bearing, only need a rocker arm body to achieve that the low lift mode of operation of cylinder deactivation-high lift-.
Description
Technical field
The present invention is about a kind of rocker arm body.
Background technique
It is become increasingly popular with energy saving and environmental protection concept, automotive energy-saving emission-reducing is more taken seriously, and engine variable gas
Door lift technology is to realize an effective means of automotive energy-saving emission-reducing.For reply climbing and accelerating mode, the function of engine
Rate have it is more than needed, so the power of automobile engine when running at a low speed has a very big waste, and engine variable valve lift
Technology can change the lift of valve under different operating conditions, to change engine power, can both make full use of engine function
Rate, and can reduce fuel consumption, exhaust gas discharge is reduced, energy-saving and environment-friendly effect is reached.
Currently, most of variable air valve lift range mechanisms are cam displacement, more cams, inside and outside rocker arm body, wherein inside and outside shake
Arm mechanism can only realize cylinder deactivation or height lift variation mostly, and mechanism is complicated, higher cost.
It can only realize that cylinder deactivation-is normal or high lift-two operating modes of low lift in the prior art, cannot realize and stop simultaneously
The low lift mode of operation of cylinder-high lift-；Lock pin and lock pin spring are mounted in inner rocker arm, and inner rocker arm and outer rocker arm have opposite fortune
Dynamic oil circuit difficult design, leakproofness are poor；And two operating modes require two various sizes of cams, complex process.
Summary of the invention
The interior outer rocker arm control mechanism being integrated the purpose of the present invention is realizing high lift, low lift, cylinder deactivation.
To realize the above-mentioned technical purpose, the present invention provides a kind of rocker arm body comprising: through in connecting shaft rotation connection
Rocker arm and outer rocker arm, and the camshaft positioned at the inner rocker arm and the outer rocker arm top, in which: the outer rocker arm is T-shaped
And basic circle needle bearing is rotatably connected in the mounting hole in its trailing arm ontology；The inner rocker arm is in rectangle type and is located at described
It on the outside of trailing arm of outer rocker arm or so two and include: low lift inner rocker arm and high lift inner rocker arm, in the low lift inner rocker arm
Rotation connection is disposed with low lift needle bearing in mounting hole in ontology, the installation in the ontology of the high lift inner rocker arm
Rotation connection is disposed with high lift needle bearing in hole；And the cam portion on the camshaft include: positioned at middle part and with institute
State basic circle needle bearing phase cam contact connection basic circle cam, and be located at two sides and simultaneously with the low lift needle bearing and
The lift cams of the high lift needle bearing phase cam contact connection.
As a further improvement, the basic circle cam is the cylinder of equal radiuses.
As a further improvement, the lift cams include: to drive the cylindrical surface of the low lift needle bearing, and drive
Move the cam surface of the high lift needle bearing.
As a further improvement, the connecting shaft is located at the top of the trailing arm of the outer rocker arm, and the connecting shaft is
The top of the low lift inner rocker arm, the trailing arm of the outer rocker arm and the high lift inner rocker arm is simultaneously sequentially rotated company by one section
It connects.
As a further improvement, the two sides of the bottom of the trailing arm of the outer rocker arm be respectively provided with in the low lift
The lock pin and lock pin return spring that rocker arm is connected with the high lift inner rocker arm.
As a further improvement, it is convex to be respectively provided with return for the bottom of the low lift inner rocker arm and high lift inner rocker arm
The lower surface arrangement of platform, the return boss has inner rocker arm return spring.
As a further improvement, the bottom at the transverse arm both ends of the outer rocker arm is respectively disposed with hydraulic tappet, and institute
The lower end for stating low lift inner rocker arm and high lift inner rocker arm is connected separately with valve.
The present invention only needs a rocker arm body to achieve that the low lift mode of operation of cylinder deactivation-high lift-；Lock pin and lock pin bullet
Spring is arranged in outer rocker arm, improves leakproofness, and oil circuit arrangement is simple；Different working modes correspond to different dimensioned bearings, it is not necessary to change
Become cam dimension.
Detailed description of the invention
Fig. 1 is appearance diagram of the present invention；
Fig. 2 is the present invention and camshaft cooperation schematic diagram；
Fig. 3 is perspective view of the explosion of the present invention；With
Fig. 4 is outer rocker arm schematic diagram.
Appended drawing reference: outer rocker arm 1；Basic circle needle bearing 2；Low lift inner rocker arm 3；High lift inner rocker arm 4；Low lift needle roller
Bearing 5；High lift needle bearing 6；Camshaft 7；Connecting shaft 8；Basic circle cam 9；Lift cams 10；Lock pin 11；Lock pin return bullet
Spring 12；Return boss 13；Inner rocker arm return spring 14；Hydraulic tappet 15；Valve 16.
Specific embodiment
As shown in Figures 1 to 4, the present invention provides a kind of rocker arm body comprising: the inner rocker arm being rotatablely connected through connecting shaft 8
With outer rocker arm 1, and the camshaft 7 positioned at 1 top of the inner rocker arm and the outer rocker arm, in which: the outer rocker arm 1 is T-shaped
And basic circle needle bearing 2 is rotatably connected in the mounting hole in its trailing arm ontology；The inner rocker arm is in rectangle type and is located at institute
It states two outside of trailing arm of outer rocker arm 1 or so and includes: low lift inner rocker arm 3 and high lift inner rocker arm 4, shaken in the low lift
Rotation connection is disposed with low lift needle bearing 5 in mounting hole in the ontology of arm 3, in the ontology of the high lift inner rocker arm 4
In mounting hole in rotation connection be disposed with high lift needle bearing 6；And the cam portion on the camshaft 7 includes: to be located at
Middle part and the basic circle cam 9 being connect with the 2 phase cam contact of basic circle needle bearing, and be located at two sides and simultaneously with the low liter
The lift cams 10 that journey needle bearing 5 is connected with the 6 phase cam contact of high lift needle bearing.
Basic circle needle bearing is mounted in outer rocker arm, impact when reducing rocker-arm return to cam；Low lift needle bearing
It is mounted in low lift inner rocker arm, realizes low lift；High lift needle bearing is mounted in high lift inner rocker arm, realizes promotion
Journey.
As a further improvement, the basic circle cam 9 is the cylinder of equal radiuses.
As a further improvement, the lift cams 10 include: to drive the cylindrical surface of the low lift needle bearing 5,
With the cam surface for driving the high lift needle bearing 6.
As a further improvement, the connecting shaft 8 is located at the top of the trailing arm of the outer rocker arm 1, and the connecting shaft 8
For one section and sequence turns the top of the low lift inner rocker arm 3, the trailing arm of the outer rocker arm 1 and the high lift inner rocker arm 4
Dynamic connection.
As a further improvement, it is respectively provided with and the low lift in the two sides of the bottom of the trailing arm of the outer rocker arm 1
The lock pin 11 and lock pin return spring 12 of inner rocker arm 3 and the high lift inner rocker arm 4 connection.
There are two hole on the trailing arm of outer rocker arm, upside aperture is blind hole, and downside macropore is through-hole, upside aperture be lock pin and
Lock pin return spring mounting hole, downside macropore connect in outer rocker arm connecting shaft, there are two boss on transverse arm, for installing inner rocker arm
Return spring.Corresponding, there are two hole on the left of inner rocker arm, upside aperture is blind hole, and downside macropore is through-hole, and upside aperture is used
In outer rocker arm in lock pin locking, downside macropore connects interior outer rocker arm connecting shaft, realizes that interior outer rocker arm combines.Have on the inside of inner rocker arm blind
Hole is for installing needle bearing.13 boss of return boss of inner rocker arm is for installing inner rocker arm return spring.
As a further improvement, it is convex to be respectively provided with return for the bottom of the low lift inner rocker arm 3 and high lift inner rocker arm 4
The lower surface arrangement of platform 13, the return boss has inner rocker arm return spring 14.
Lock pin return spring 12 connects outer rocker arm and lock pin, when hydraulic tappet fuel cut-off, lock pin is made to return to inside and outside shake
Between arm, the locking of internal outer rocker arm is realized；Inner rocker arm return spring 14 connects interior outer rocker arm, and control inner rocker arm returns when cylinder deactivation
Position.Lock pin return spring 12 and lock pin are mounted in outer rocker arm, and lock pin is between interior outer rocker arm when normal work, make inside and outside shake
Arm connection；When becoming lift, lock pin is pressed into outer rocker arm by hydraulic tappet fuel feeding, is realized and is become lift and cylinder deactivation；Restore to work normally
When, lock pin return spring places it in lock pin ejection outer rocker arm between interior outer rocker arm, connects interior outer rocker arm.
As a further improvement, the bottom at the transverse arm both ends of the outer rocker arm 1 is respectively disposed with hydraulic tappet 15, and
The lower end of the low lift inner rocker arm 3 and high lift inner rocker arm 4 is connected separately with valve 16.
The present invention only needs a rocker arm body to achieve that the low lift mode of operation of cylinder deactivation-high lift-；Lock pin and lock pin bullet
Spring is arranged in outer rocker arm, improves leakproofness, and oil circuit arrangement is simple；Different working modes correspond to different dimensioned bearings, it is not necessary to change
Become cam dimension.
In rocker arm body as shown in the figure, interior outer rocker arm connecting shaft connect in outer rocker arm, make inner rocker arm can around the axis with shake outside
Arm generates relative movement；Lock pin controls inside and outside rocker arm and separates and engage, and lock pin return spring controls lock pin return；Inner rocker arm return
Inner rocker arm return when spring separates inside and outside rocker arm, moment and cam contact.Needle bearing and cam contact (its China and foreign countries in rocker arm
Basic circle needle bearing and basic circle cam contact in rocker arm, stability when improving mechanism work), outer rocker arm is connected in interior outer rocker arm
Lower end is contacted with valve and valve spring at axis.
Working method:
High lift mode: lock pin is due to the effect of lock pin return spring and between interior outer rocker arm, interior outer rocker arm engagement, cam
It acts at high lift needle bearing, interior outer rocker arm mass motion is driven, to push valve stem that valve is made to be in high lift shape
State；
Low lift mode: the lock pin of high lift inner rocker arm is since hydraulic quickly column oil supply pressure is pressed into outer rocker arm, promotion
Journey inner rocker arm is separated with outer rocker arm, is moved when cam acts on around interior outer rocker arm connecting shaft, is not involved in valve stroke control, and is passed through
Inner rocker arm return spring effect, always with cam contact, safeguard work stability.The lock pin of low lift inner rocker arm is still in inside and outside
Between rocker arm, therefore, cam acts on low lift needle bearing, and low lift inner rocker arm is driven to move together with outer rocker arm, thus
Push valve stem that valve is made to be in low lift condition；
Deactivation mode: the lock pin of height lift inner rocker arm is since hydraulic quickly column oil supply pressure is pressed into outer rocker arm, height
Lift inner rocker arm is separated with outer rocker arm, is moved when cam acts on around interior outer rocker arm connecting shaft, is not involved in valve stroke control.Cause
This, basic circle cam acts on basic circle needle bearing, and outer rocker arm does not move, so that valve be made to be in zero lift, realizes cylinder deactivation.
It should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party
Case is illustrated as just example.The protection scope of the desired essence of the application is more embodied in independent claims offer
Range and its dependent claims.
Claims (4)
1. a kind of rocker arm body comprising: the inner rocker arm and outer rocker arm (1) being rotatablely connected through connecting shaft (8), and be located at described
The camshaft (7) of inner rocker arm and the outer rocker arm (1) top, it is characterised in that:
The outer rocker arm (1) is T-shaped and is rotatably connected to basic circle needle bearing (2) in the mounting hole in its trailing arm ontology；
The inner rocker arm in rectangle type and positioned at two outside of the trailing arm of the outer rocker arm (1) or so and includes: low lift inner rocker arm
(3) and high lift inner rocker arm (4), in the mounting hole in the ontology of the low lift inner rocker arm (3) rotation connection be disposed with it is low
Lift needle bearing (5), rotation connection is disposed with high lift rolling in the mounting hole in the ontology of the high lift inner rocker arm (4)
Needle bearing (6)；And
Cam portion on the camshaft (7) includes: to connect positioned at middle part and with basic circle needle bearing (2) the phase cam contact
The basic circle cam (9) connect, and be located at two sides and simultaneously with the low lift needle bearing (5) and the high lift needle bearing
(6) lift cams (10) of phase cam contact connection；
The lift cams (10) include: the cylindrical surface for driving the low lift needle bearing (5), and the driving high lift rolling
The cam surface of needle bearing (6)；
The connecting shaft (8) is located at the top of the trailing arm of the outer rocker arm (1), and the connecting shaft (8) is one section and sequence will
The top of the low lift inner rocker arm (3), the trailing arm of the outer rocker arm (1) and the high lift inner rocker arm (4) is rotatablely connected；
Have and the low lift inner rocker arm (3) and the promotion simultaneously in the side of the bottom of the trailing arm of the outer rocker arm (1)
The lock pin (11) and lock pin return spring (12) of journey inner rocker arm (4) connection；
Have and the low lift inner rocker arm (3) and the height simultaneously in the other side of the bottom of the trailing arm of the outer rocker arm (1)
The lock pin (11) and lock pin return spring (12) of lift inner rocker arm (4) connection.
2. a kind of rocker arm body as described in claim 1, it is characterised in that: the basic circle cam (9) is the cylinder for waiting radiuses.
3. a kind of rocker arm body as described in claim 1, it is characterised in that: in the low lift inner rocker arm (3) and high lift
The bottom of rocker arm (4) is respectively provided with return boss (13), and the lower surface arrangement of the return boss has inner rocker arm return spring
(14)。
4. a kind of rocker arm body as described in claim 1, it is characterised in that: the bottom at the transverse arm both ends of the outer rocker arm (1)
Be respectively disposed with hydraulic tappet (15), and the lower end of the low lift inner rocker arm (3) and high lift inner rocker arm (4) is separately connected
There are valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941689.1A CN107701253B (en) | 2017-10-11 | 2017-10-11 | A kind of rocker arm body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941689.1A CN107701253B (en) | 2017-10-11 | 2017-10-11 | A kind of rocker arm body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107701253A CN107701253A (en) | 2018-02-16 |
| CN107701253B true CN107701253B (en) | 2019-08-06 |
Family
ID=61184935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710941689.1A Active CN107701253B (en) | 2017-10-11 | 2017-10-11 | A kind of rocker arm body |
Country Status (1)
| Country | Link |
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| CN (1) | CN107701253B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11566544B2 (en) | 2018-08-09 | 2023-01-31 | Eaton Intelligent Power Limited | Rocker arm assembly with lost motion spring |
| CN112585337B (en) * | 2018-08-09 | 2023-03-28 | 伊顿智能动力有限公司 | Deactivating rocker arm with two-step latch pin |
| CN112065526B (en) * | 2020-09-11 | 2022-04-05 | 潍柴动力股份有限公司 | Valve bridge, cylinder deactivation device and engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5553584A (en) * | 1993-12-24 | 1996-09-10 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating device for internal combustion engine |
| GB2333322B (en) * | 1998-01-13 | 2000-03-15 | Lotus Car | Cam mechanism |
| DE10310968A1 (en) * | 2003-03-13 | 2004-09-23 | Ina-Schaeffler Kg | Pulling lever for a combustion engine gas exchange valve has inner and outer levers and coupling to two outer pistons |
| CN104321503A (en) * | 2011-12-09 | 2015-01-28 | 克莱斯勒集团有限责任公司 | Rocker arm providing cylinder deactivation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6769387B2 (en) * | 2002-10-19 | 2004-08-03 | General Motors Corporation | Compact two-step rocker arm assembly |
| DE10257705A1 (en) * | 2002-12-11 | 2004-06-24 | Ina-Schaeffler Kg | Valve lever for valve train of internal combustion engine has outer lever enclosing inner lever with arms and swiveled away from it when decoupled |
-
2017
- 2017-10-11 CN CN201710941689.1A patent/CN107701253B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5553584A (en) * | 1993-12-24 | 1996-09-10 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating device for internal combustion engine |
| GB2333322B (en) * | 1998-01-13 | 2000-03-15 | Lotus Car | Cam mechanism |
| DE10310968A1 (en) * | 2003-03-13 | 2004-09-23 | Ina-Schaeffler Kg | Pulling lever for a combustion engine gas exchange valve has inner and outer levers and coupling to two outer pistons |
| CN104321503A (en) * | 2011-12-09 | 2015-01-28 | 克莱斯勒集团有限责任公司 | Rocker arm providing cylinder deactivation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107701253A (en) | 2018-02-16 |
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