CN107701253A - A kind of rocker arm body - Google Patents
A kind of rocker arm body Download PDFInfo
- Publication number
- CN107701253A CN107701253A CN201710941689.1A CN201710941689A CN107701253A CN 107701253 A CN107701253 A CN 107701253A CN 201710941689 A CN201710941689 A CN 201710941689A CN 107701253 A CN107701253 A CN 107701253A
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- lift
- needle bearing
- arm
- inner rocker
- 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.)
- Granted
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
- F01L1/18—Rocking arms or levers
-
- 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, it includes：The inner rocker arm and outer rocker arm being rotatablely connected through connecting shaft, and the camshaft in portion disposed thereon, outer rocker arm is T-shaped and is rotatably connected to basic circle needle bearing in its trailing arm body；The rectangular type of inner rocker arm and positioned at the outside of trailing arm or so two of outer rocker arm and including：Low lift inner rocker arm and high lift inner rocker arm, are rotatablely connected in low lift inner rocker arm and are disposed with low lift needle bearing, are rotatablely connected in high lift inner rocker arm and are disposed with high lift needle bearing；Cam portion on camshaft includes：The basic circle cam being connected positioned at middle part and with basic circle needle bearing, and the lift cams being simultaneously connected simultaneously with low lift needle bearing and high lift needle bearing positioned at both sides, one rocker arm body of its need achieve that the low lift mode of operation of cylinder deactivation high lift.
Description
Technical field
The present invention is on a kind of rocker arm body.
Background technology
As energy-conservation and environmental protection concept become increasingly popular, 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 work(of engine
Rate have it is more than needed, so automobile power of 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 modes, so as to change engine power, can both make full use of engine work(
Rate, fuel consumption can be reduced again, reduce waste gas discharge, have the function that energy-conserving and environment-protective.
At present, most of variable air valve lift range mechanisms be 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, and cost is higher.
Cylinder deactivation-normal or high lift-mode of operation of low lift two can only be realized in the prior art, it is impossible to while realize and stop
Cylinder-high lift-low lift mode of operation；Lock pin and lock pin spring are arranged in inner rocker arm, and inner rocker arm has relative fortune with outer rocker arm
Dynamic oil circuit difficult design, sealing are poor；And two mode of operations are required for two various sizes of cams, complex process.
The content of the invention
The purpose of the present invention is to realize the interior outer rocker arm controlling organization that high lift, low lift, cylinder deactivation are integrated.
To realize above-mentioned technical purpose, the present invention provides a kind of rocker arm body, and it includes：Through in connecting shaft rotation connection
Rocking arm and outer rocker arm, and the camshaft positioned at the inner rocker arm and the outer rocker arm top, wherein：The outer rocker arm is T-shaped
And it is rotatably connected to basic circle needle bearing in the mounting hole in its trailing arm body；The rectangular type of the inner rocker arm and positioned at described
The outside of trailing arm of outer rocker arm or so two and including：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 body, the installation in the body 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 includes：Positioned at middle part and with institute
State basic circle needle bearing phase cam contact connection basic circle cam, and positioned at both 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 for waiting radius.
As a further improvement, the lift cams include：The face of cylinder of the low lift needle bearing is driven, and is driven
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
Connect.
As a further improvement, the outer rocker arm trailing arm bottom both sides respectively have with the low lift in
The lock pin and lock pin return spring that rocking arm connects with the high lift inner rocker arm.
As a further improvement, the bottom of the low lift inner rocker arm and high lift inner rocker arm has return convex respectively
Platform, the lower surface arrangement of the return boss have 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 to valve.
The present invention only needs a rocker arm body to achieve that cylinder deactivation-high lift-low lift mode of operation；Lock pin and lock pin bullet
Spring is arranged in outer rocker arm, improves sealing, and oil circuit arrangement is simple；Different working modes correspond to different dimensioned bearings, it is not necessary to change
Become cam dimension.
Brief description of the drawings
Fig. 1 is schematic appearance of the present invention；
Fig. 2 is the present invention and camshaft cooperation schematic diagram；
Fig. 3 is exploded perspective view of the present invention；With
Fig. 4 is outer rocker arm schematic diagram.
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.
Embodiment
As shown in Figures 1 to 4, the present invention provides a kind of rocker arm body, and it includes：The inner rocker arm being rotatablely connected through connecting shaft 8
With outer rocker arm 1, and the camshaft 7 positioned at the inner rocker arm and the top of the outer rocker arm 1, wherein：The outer rocker arm 1 is T-shaped
And it is rotatably connected to basic circle needle bearing 2 in the mounting hole in its trailing arm body；The rectangular type of the inner rocker arm is simultaneously located at institute
State the outside of trailing arm of outer rocker arm 1 or so two and including：Low lift inner rocker arm 3 and high lift inner rocker arm 4, shake in the low lift
Rotation connection is disposed with low lift needle bearing 5 in mounting hole in the body of arm 3, in the body 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：It is located at
Middle part and the basic circle cam 9 being connected with the phase cam contact of basic circle needle bearing 2, and positioned at both sides and simultaneously with the low liter
The lift cams 10 that journey needle bearing 5 connects with the phase cam contact of high lift needle bearing 6.
Basic circle needle bearing is arranged in outer rocker arm, impact when reducing rocker-arm return to cam；Low lift needle bearing
In low lift inner rocker arm, low lift is realized；High lift needle bearing is arranged in high lift inner rocker arm, realizes promotion
Journey.
As a further improvement, the basic circle cam 9 is the cylinder for waiting radius.
As a further improvement, the lift cams 10 include：The face of cylinder of the low lift needle bearing 5 is driven,
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 order 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, have and the low lift respectively in the both sides of the bottom of the trailing arm of the outer rocker arm 1
Inner rocker arm 3 and the lock pin 11 and lock pin return spring 12 of the high lift inner rocker arm 4 connection.
Have two holes 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, outer rocker arm connecting shaft in the connection of downside macropore, has two boss on transverse arm, for installing inner rocker arm
Return spring.Corresponding, there are two holes on the left of inner rocker arm, upside aperture is blind hole, and downside macropore is through hole, and upside aperture is used
Combined in outer rocker arm in outer rocker arm connecting shaft in outer rocker arm in lock pin locking, downside macropore connection, realization.Have on the inside of inner rocker arm blind
Hole is used to install needle bearing.The boss of return boss 13 of inner rocker arm is used to install inner rocker arm return spring.
As a further improvement, the bottom of the low lift inner rocker arm 3 and high lift inner rocker arm 4 has return convex respectively
Platform 13, the lower surface arrangement of the return boss have 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 returned 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, controls inner rocker arm to return during cylinder deactivation
Position.Lock pin return spring 12 and lock pin are arranged in outer rocker arm, and lock pin be between interior outer rocker arm during normal work, make inside and outside shake
Arm connects；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；Recover normal work
When, between lock pin ejection outer rocker arm is placed it in interior outer rocker arm by lock pin return spring, connect 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 to valve 16.
The present invention only needs a rocker arm body to achieve that cylinder deactivation-high lift-low lift mode of operation；Lock pin and lock pin bullet
Spring is arranged in outer rocker arm, improves sealing, and oil circuit arrangement is simple；Different working modes correspond to different dimensioned bearings, it is not necessary to change
Become cam dimension.
As shown in the figure in rocker arm body, outer rocker arm in interior outer rocker arm connecting shaft connection, make inner rocker arm can be around the axle with shaking outside
Arm produces relative movement；Rocking arm separation is with engaging inside and outside lock pin control, lock pin return spring control lock pin return；Inner rocker arm return
Inner rocker arm return, moment and cam contact when spring makes inside and outside rocking arm separation.Needle bearing and cam contact (its China and foreign countries in rocking arm
Basic circle needle bearing and basic circle cam contact in rocking arm, stability when improving mechanism work), outer rocker arm connects in interior outer rocker arm
Lower end contacts with valve and valve spring at axle.
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
Act at high lift needle bearing, outer rocker arm mass motion in drive, so as to promote valve stem valve is in high lift shape
State；
Low lift mode：Due to hydraulic pressure, quickly post oil pressure is pressed into outer rocker arm the lock pin of high lift inner rocker arm, promotion
Journey inner rocker arm separates 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 passes through
Inner rocker arm return spring act on, all the time with cam contact, safeguard work stability.The lock pin of low lift inner rocker arm is still in inside and outside
Between rocking arm, therefore, cam acts on low lift needle bearing, drives low lift inner rocker arm to be moved together with outer rocker arm, so as to
Valve stem is promoted valve is in low lift condition；
Deactivation mode：Due to hydraulic pressure, quickly post oil pressure is pressed into outer rocker arm the lock pin of height lift inner rocker arm, height
Lift inner rocker arm separates 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 is 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 illustrates as just example.The desired substantive protection domain of the application is more embodied in independent claims offer
Scope, and its dependent claims.
Claims (7)
1. a kind of rocker arm body, it includes：The inner rocker arm and outer rocker arm (1) being rotatablely connected through connecting shaft (8), and positioned at described
Inner rocker arm and the camshaft (7) on the outer rocker arm (1) top, it is characterised in that：
The outer rocker arm (1) is T-shaped and mounting hole in its trailing arm body in be rotatably connected to basic circle needle bearing (2)；
The rectangular type of the inner rocker arm and the outside of trailing arm positioned at the outer rocker arm (1) or so two and including：Low lift inner rocker arm
(3) and high lift inner rocker arm (4), in the mounting hole in the body of the low lift inner rocker arm (3) rotation connection be disposed with it is low
Lift needle bearing (5), in the mounting hole in the body of the high lift inner rocker arm (4) rotation connection be disposed with high lift rolling
Needle bearing (6)；And
Cam portion on the camshaft (7) includes：Connect positioned at middle part and with basic circle needle bearing (2) the phase cam contact
The basic circle cam (9) connect, and positioned at both 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.
A kind of 2. rocker arm body as claimed in claim 1, it is characterised in that：The basic circle cam (9) is the cylinder for waiting radius.
A kind of 3. rocker arm body as claimed in claim 1, it is characterised in that：The lift cams (10) include：Described in driving
The face of cylinder of low lift needle bearing (5), and the cam surface of the driving high lift needle bearing (6).
A kind of 4. rocker arm body as claimed in claim 1, it is characterised in that：The connecting shaft (8) is located at the outer rocker arm (1)
Trailing arm top, and the connecting shaft (8) is one section and order is by the low lift inner rocker arm (3), the outer rocker arm (1)
The top of trailing arm and the high lift inner rocker arm (4) is rotatablely connected.
A kind of 5. rocker arm body as claimed in claim 4, it is characterised in that：In the bottom of the trailing arm of the outer rocker arm (1)
There is the lock pin (11) being connected with the low lift inner rocker arm (3) and the high lift inner rocker arm (4) and lock pin to return respectively for both sides
Position spring (12).
A kind of 6. rocker arm body as claimed in claim 1, it is characterised in that：In the low lift inner rocker arm (3) and high lift
The bottom of rocking arm (4) has return boss (13) respectively, and the lower surface arrangement of the return boss has inner rocker arm return spring
(14)。
A kind of 7. rocker arm body as claimed 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) connects respectively
There is 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 true CN107701253A (en) | 2018-02-16 |
| CN107701253B 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 |
|---|---|
| CN (1) | CN107701253B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020030298A1 (en) * | 2018-08-09 | 2020-02-13 | Eaton Intelligent Power Limited | Deactivating rocker arm having two-stage latch pin |
| CN112065526A (en) * | 2020-09-11 | 2020-12-11 | 潍柴动力股份有限公司 | Valve bridge, cylinder deactivation device and engine |
| US11566544B2 (en) | 2018-08-09 | 2023-01-31 | Eaton Intelligent Power Limited | Rocker arm assembly with lost motion spring |
Citations (6)
| 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 |
| US20040074459A1 (en) * | 2002-10-19 | 2004-04-22 | Hayman Alan W. | Compact two-step rocker arm assembly |
| 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 |
| US20050247279A1 (en) * | 2002-12-11 | 2005-11-10 | Bodo Rorig | Finger lever of a valve train of an internal combustion engine |
| 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 |
-
2017
- 2017-10-11 CN CN201710941689.1A patent/CN107701253B/en active Active
Patent Citations (6)
| 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 |
| US20040074459A1 (en) * | 2002-10-19 | 2004-04-22 | Hayman Alan W. | Compact two-step rocker arm assembly |
| US20050247279A1 (en) * | 2002-12-11 | 2005-11-10 | Bodo Rorig | Finger lever of a valve train of an internal combustion engine |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020030298A1 (en) * | 2018-08-09 | 2020-02-13 | Eaton Intelligent Power Limited | Deactivating rocker arm having two-stage latch pin |
| CN112585337A (en) * | 2018-08-09 | 2021-03-30 | 伊顿智能动力有限公司 | Deactivating rocker arm with two-stage latch pin |
| US11286817B2 (en) | 2018-08-09 | 2022-03-29 | Eaton Intelligent Power Limited | Deactivating rocker arm having two-stage latch pin |
| US11319840B2 (en) | 2018-08-09 | 2022-05-03 | Eaton Intelligent Power Limited | Deactivating rocker arm having two-stage latch pin |
| US11566544B2 (en) | 2018-08-09 | 2023-01-31 | Eaton Intelligent Power Limited | Rocker arm assembly with lost motion spring |
| CN112065526A (en) * | 2020-09-11 | 2020-12-11 | 潍柴动力股份有限公司 | Valve bridge, cylinder deactivation device and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107701253B (en) | 2019-08-06 |
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