CN201310389Y - Valve driving device of four-valve diesel engine - Google Patents
Valve driving device of four-valve diesel engine Download PDFInfo
- Publication number
- CN201310389Y CN201310389Y CNU2008202207590U CN200820220759U CN201310389Y CN 201310389 Y CN201310389 Y CN 201310389Y CN U2008202207590 U CNU2008202207590 U CN U2008202207590U CN 200820220759 U CN200820220759 U CN 200820220759U CN 201310389 Y CN201310389 Y CN 201310389Y
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- diesel engine
- ball seat
- driving device
- 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.)
- 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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
A valve driving device of four-valve diesel engine comprises a swinging arm, a ball valve, a ball seat, a bridge piece, a valve locking clip, a spring holder, a fuel injector clamping plate and a valve spring. The valve driving device of four-valve diesel engine is used to drive two inlet valves and two exhaust valves on a side cam shaft type four-valve diesel engine. The valve driving device of four-valve diesel engine mainly adopts the valve bridge piece which is sleeved on the two inlet valves and the two exhaust valves, and the ball valve is installed in the ball seat and is installed on the valve swinging arm with the ball seat together. The movement synchronization of the two valves can be guaranteed. Since the valve bridge piece without guiding is adopted, thereby the manufacture is simpler, the space distribution is convenient, and compact design demands of an existing diesel engine can be satisfied. The head of the swinging arm and the bridge piece form face contact, the applied force condition is greatly improved, simultaneously, the design of an oil-hole structure is beneficial for the lubrication of a connecting piece, the contact abrasion is lowered, and the service life of machine members is improved.
Description
One. technical field
The utility model belongs to engine art, relates to a kind of valve drive device of four-air valve diesel.
Two. background technique
In existing diesel engine four door drive mechanism, side-mounted camshaft four-valve diesel engine has two intake valves, two exhaust valves, normally carries out synchronous drive by the air valve bridge sheet, and this air valve bridge sheet has guiding device.Rocking arm drives the air valve bridge sheet, and the air valve bridge sheet moves along fixing guiding device, drives valve with this and is synchronized with the movement.Than higher, the stressed uncertainty of valve rocker causes guide structure to be subjected to lateral forces and to produce heavy wear and clamping stagnation to this device easily, makes the valve actuation can't proper functioning to air valve bridge sheet guiding centre positioning requirements.Because the four-valve diesel engine design oil sprayer rising structures that adopt adopt guiding device more, have limited the design of the fixed structure of oil sprayer, have increased the diesel engine design height virtually, strictness is limited in the compactness design on the existing diesel basis.
Three. summary of the invention
The valve drive device of four-air valve diesel that provides a kind of compact structure, well behaved small engineering machinery and farm machinery to use is provided the purpose of this utility model.
The utility model achieves the above object by the following technical programs: a kind of valve drive device of four-air valve diesel mainly comprises: rocking arm 1, ball valve 2, ball seat 3, air valve bridge sheet 4, valve collet 5, spring seat 6, injector plate 7, valve spring 8.It is characterized in that: ball valve 2 is press-fited on ball seat 3, ball valve 2 is freely rotated in ball seat 3; Ball valve 2 and the ball component that ball seat 3 forms are press-fited on rocking arm 1, air valve bridge sheet 4 is directly installed on diesel engine dual valve top again, and injector plate 7 is installed on and is positioned at two valve intermediate portions below the air valve bridge sheet 4; Two grooves are set on the air valve bridge sheet 4, and one of them is a U-groove bevel; Rocking arm 1, ball valve 2, ball seat 3 are provided with oilhole.
Adopt the utility model can reach following beneficial effect:
(1). this structure has adopted the air valve bridge sheet of no guiding device, and maker processing is fairly simple, the diesel engine compact structure.
(2). in the middle of the ball component oilhole is arranged, valve actuating mechanism is had good lubrication through pitman arm shaft, rocking arm lubricant oil.
(3) ball seat contacts with air valve bridge is unilateral, has well reduced contact stress, has improved the physical life of valve actuating mechanism.
(4) ball seat presses fit in the ball valve, press-fits the back and guarantees that ball seat can rotate freely, can guarantee the height unanimity of two valves, to guarantee the synchronous operation of valve actuating mechanism.
(4) description of drawings
Fig. 1 is the structural representation of the utility model valve drive device of four-air valve diesel.
Fig. 2 is the rocker arm assembly schematic representation of the utility model valve drive device of four-air valve diesel.
(5) embodiment
As shown in Figure 1.Valve drive device of four-air valve diesel mainly comprises: rocking arm 1, ball valve 2, ball seat 3, air valve bridge sheet 4 be tape guide not, air valve bridge sheet 4 is directly installed on the diesel engine dual valve, matching gap is smaller between air valve bridge sheet 4 and the valve, in order to remedy machining error, to two grooves be set on the air valve bridge sheet 4, one of them is a U-groove bevel, to guarantee that valve actuating mechanism carries out synchronously.Ball valve 2 press-fits in ball seat 3 formation ball components.Assembly is pressed in the rocking arm 1 with appropriate interference.Be placed in cylinder head spring seat 6 holes with valve spring 8, valve is placed on the cylinder head by valve guide hole, spring seat 6 is positioned on the valve spring 8, and valve collet 5 is installed in the spring seat 6.Fixed air door spring 8 guarantees that valve spring 8 moves up and down with valve.Injector plate 7 is installed on air valve bridge sheet 4 belows, and two valve spring, 8 intermediate portions help reducing the height of whole motor, project organization compactness.
During working state, camshaft actuated tappet, push rod, valve adjusting screw motion, thus make rocking arm 1 by in certain angle, rotate 2,3 motions of drive ball assembly by pitman arm shaft.Ball component 2,3 compresses air valve bridge sheet 4 synchronous drive and drives the upper and lower motion of two valves.The upper and lower motion of valve drives the upper and lower motion of valve collet 5, valve collet 5 motion spring seats 6, valve spring 8 to-and-fro motion.
Claims (3)
1. a valve drive device of four-air valve diesel mainly comprises: rocking arm (1), ball valve (2), ball seat (3), air valve bridge sheet (4), valve collet (5), spring seat (6), injector plate (7), valve spring (8), it is characterized in that: ball valve (2) is press-fited on ball seat (3), ball valve (2) is freely rotated in ball seat (3); The ball component that ball valve (2) and ball seat (3) are formed press-fits on rocking arm (1) again, and air valve bridge sheet (4) is directly installed on diesel engine dual valve top, and injector plate (7) is installed on and is positioned at two valve intermediate portions below the air valve bridge sheet (4).
2. valve drive device of four-air valve diesel according to claim 1 is characterized in that: described rocking arm (1), ball valve (2), ball seat (3) are provided with oilhole.
3. valve drive device of four-air valve diesel according to claim 1 is characterized in that: two grooves are set on the air valve bridge sheet (4), and one of them is a U-groove bevel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202207590U CN201310389Y (en) | 2008-11-07 | 2008-11-07 | Valve driving device of four-valve diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202207590U CN201310389Y (en) | 2008-11-07 | 2008-11-07 | Valve driving device of four-valve diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310389Y true CN201310389Y (en) | 2009-09-16 |
Family
ID=41107643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202207590U Expired - Fee Related CN201310389Y (en) | 2008-11-07 | 2008-11-07 | Valve driving device of four-valve diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310389Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060932A (en) * | 2016-12-21 | 2017-08-18 | 中国北方发动机研究所(天津) | A kind of engine roller rocking arm |
| CN110685768A (en) * | 2019-10-18 | 2020-01-14 | 姬腾飞 | Variable valve driving device of engine and engine |
-
2008
- 2008-11-07 CN CNU2008202207590U patent/CN201310389Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060932A (en) * | 2016-12-21 | 2017-08-18 | 中国北方发动机研究所(天津) | A kind of engine roller rocking arm |
| CN107060932B (en) * | 2016-12-21 | 2018-11-02 | 中国北方发动机研究所(天津) | A kind of engine roller rocking arm |
| CN110685768A (en) * | 2019-10-18 | 2020-01-14 | 姬腾飞 | Variable valve driving device of engine and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20151107 |
|
| EXPY | Termination of patent right or utility model |