CN108915815A - In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism - Google Patents
In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism Download PDFInfo
- Publication number
- CN108915815A CN108915815A CN201811037204.7A CN201811037204A CN108915815A CN 108915815 A CN108915815 A CN 108915815A CN 201811037204 A CN201811037204 A CN 201811037204A CN 108915815 A CN108915815 A CN 108915815A
- Authority
- CN
- China
- Prior art keywords
- camshaft
- valve
- tappet
- medium
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 11
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2416—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device attached to an articulated rocker
-
- 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
- F01L2810/00—Arrangements solving specific problems in relation with valve gears
- F01L2810/04—Reducing noise
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 the valve clearance hydraulic adjustment mechanisms for the medium and heavy engine that camshaft is set in one kind.The valve clearance hydraulic adjustment mechanism that the medium and heavy engine of camshaft is set in this includes：Camshaft；Tappet, one end and the camshaft cooperate, and the axial direction for being converted into tappet of camshaft is moved up and down；The other end of push rod, one end and the tappet cooperates；Rocker arm, one end have adjusting screw, which is hydraulic structure, and the other end as lash adjuster and the push rod is used cooperatively；And valve, cooperate with the other end of the rocker arm, by the rotary action of camshaft to tappet, push rod, to be applied on the rocker arm for the adjusting screw for being integrated with hydraulic structure, controls the open and close of valve.The valve clearance hydraulic adjustment mechanism that the medium and heavy engine of camshaft is set in this is not limited by installation space, without other design oil feeding line, realizes that clearance automatic compensation is adjusted.
Description
Technical field
The present invention relates to engine arts, especially with regard between the valve of medium and heavy engine for setting camshaft in one kind
Gap hydraulic adjustment mechanism.
Background technique
As discharge upgrading and client require more harshness to NVH, long mileage exempts to adjust the valves or the life-cycle exempts to tie up
Shield is to have larger facilitation for promoting commercial engines core competitiveness.Engine conventional design is the knot of Mechanical Contact
Structure, for example, in set camshaft：Adjusting screw-push rod-tappet, overhead camshaft：Bulb engaging member-rocker-arm roller-camshaft.By
Material allowable stress, machine oil quality, manufacture cumulative limit etc. influence, mechanical structure is difficult to stablize realize that long mileage exempts from regulating air door between
Gap adjusts valve clearance when relatively mostly using time-based maintenance in industry.
Wherein, passenger car is more exempts to adjust the valves using hydraulic tappet to realize, hydraulic tappet is commonly referred to as hydraulic
Gap adjuster, valve gapper, hydraulic tappet etc., the common arrangement of passenger car hydraulic tappet are mounted on cylinder cap, and one
As need biggish structure space and the complicated special fuel feeding of oil circuit.And temporarily without in the progress of medium and heavy commercial engines in industry
The successful exploitation of valve clearance hydraulic structure and volume production, and existing structure technology is difficult to bear medium and heavy high engine load.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide it is a kind of it is simple and reasonable in set camshaft medium and heavy engine valve
Gap hydraulic adjustment mechanism sets the valve clearance hydraulic adjustment mechanism of the medium and heavy engine of camshaft for valve clearance tune in this
Whole device is integrated into the adjusting screw end in rocker arm shaft member, is not limited by installation space, real without other design oil feeding line
Existing clearance automatic compensation is adjusted.
To achieve the above object, the present invention provides the valve clearance for the medium and heavy engine that camshaft is set in one kind is hydraulic
Adjustment mechanism, including：Camshaft；Tappet, one end and the camshaft cooperate, by the axis for being converted into tappet of camshaft
It moves up and down；The other end of push rod, one end and the tappet cooperates；Rocker arm, one end have adjusting screw, the adjustment spiral shell
Nail is hydraulic structure, and the other end as lash adjuster and the push rod is used cooperatively；And valve, it is shaken with described
The other end of arm cooperates, by the rotary action of camshaft to tappet, push rod, to be applied to the adjustment for being integrated with hydraulic structure
On the rocker arm of screw, the open and close of valve is controlled.
In a preferred embodiment, the adjusting screw of hydraulic structure directly takes oil from rocker arm.
Compared with prior art, the hydraulic adjustment in valve clearance of the medium and heavy engine of camshaft is set according to the present invention
Mechanism has the advantages that：
1. adjusting screw is set as hydraulic structure, realize that clearance automatic compensation is adjusted.
2. structure is simple after integrated, space is easily realized, and directly takes oil from rocker arm, avoids that complicated fuel feeding is arranged from cylinder cap
Oil circuit, change is small, and purposes is wide.
3. reducing the noise of valve actuating mechanism, while valve crash speed is reduced, reduces the abrasion of valve retainer.
Detailed description of the invention
Fig. 1 be according to an embodiment of the present invention in set camshaft medium and heavy engine the hydraulic adjustment in valve clearance
The structural schematic diagram of mechanism.
Fig. 2 be according to an embodiment of the present invention in set camshaft medium and heavy engine the hydraulic adjustment in valve clearance
The rocker structure schematic diagram of mechanism.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As depicted in figs. 1 and 2, the valve of the medium and heavy engine of camshaft is set according to the preferred embodiment of the present invention
The specific structure of gap hydraulic adjustment mechanism includes：Camshaft (not shown), tappet 1, push rod 2, rocker arm 3 and valve 4,
In, rocker arm 3 has the adjusting screw 5 of hydraulic structure, by the rotary action of camshaft to tappet, push rod, to be applied to collection
On rocker arm at lash adjuster (adjusting screw 5 with hydraulic structure), the open and close of valve is controlled, is not pacified
Space limitation is filled, without other design oil feeding line, realizes that clearance automatic compensation is adjusted.
Specifically, camshaft is a component in piston engine.Its effect is to control the unlatching of valve and close
Conjunction movement.Although the revolving speed of camshaft is the half of crankshaft in four-stroke engine, but usually it revolving speed it is still very high,
And need to bear very big torque, therefore very high to requirement of the camshaft in terms of intensity and support in design, material one
As be superior alloy steel or steel alloy.
One end of tappet 1 and camshaft cooperate, and the axial direction for being converted into tappet 1 of camshaft is moved up and down.
One end of push rod 2 and the other end of tappet 1 cooperate, and the other end of push rod 2 and the adjusting screw 5 of rocker arm 3 cooperate.
One end of rocker arm 3 have adjusting screw 5, the adjusting screw 5 be hydraulic structure, as lash adjuster with push away
The other end of bar 2 is used cooperatively, and the adjusting screw 5 of the hydraulic structure directly takes oil from rocker arm.Adjusting screw 5 is set as hydraulic knot
Structure can be realized clearance automatic compensation adjusting.Structure is simple after the adjusting screw 5 of 3 integrated hydraulic structure of rocker arm, and space is easily real
It is existing, and oil is directly taken from rocker arm, it avoids that complicated oil feeding line is arranged from cylinder cap, change is small, and purposes is wide.
The other end of valve 4 and rocker arm 3 cooperates, by the rotary action of camshaft to tappet, push rod, to be applied to collection
On rocker arm at lash adjuster (adjusting screw 5 with hydraulic structure), the open and close of valve is controlled, is not pacified
Space limitation is filled, without other design oil feeding line, realizes that clearance automatic compensation is adjusted.And valve actuating mechanism can also be reduced
Noise, while valve crash speed is reduced, reduce the abrasion of valve retainer.
To sum up, the valve clearance hydraulic adjustment mechanism of the medium and heavy engine of camshaft is set in this by valve gapper
It is integrated into the adjusting screw end in rocker arm shaft member, is not limited by installation space, without other design oil feeding line, between realization
The automatic compensation adjustment of gap.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (2)
1. setting the valve clearance hydraulic adjustment mechanism of the medium and heavy engine of camshaft in one kind, which is characterized in that including：
Camshaft；
Tappet, one end and the camshaft cooperate, and the axial direction for being converted into tappet of camshaft is moved up and down；
The other end of push rod, one end and the tappet cooperates；
Rocker arm, one end have adjusting screw, which is hydraulic structure, as lash adjuster and the push rod
The other end be used cooperatively；And
Valve cooperates with the other end of the rocker arm, by the rotary action of camshaft to tappet, push rod, to be applied to
It is integrated on the rocker arm of the adjusting screw of hydraulic structure, controls the open and close of valve.
2. setting the valve clearance hydraulic adjustment mechanism of the medium and heavy engine of camshaft, feature in as described in claim 1
It is, the adjusting screw of the hydraulic structure directly takes oil from rocker arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037204.7A CN108915815A (en) | 2018-09-06 | 2018-09-06 | In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037204.7A CN108915815A (en) | 2018-09-06 | 2018-09-06 | In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108915815A true CN108915815A (en) | 2018-11-30 |
Family
ID=64406875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811037204.7A Pending CN108915815A (en) | 2018-09-06 | 2018-09-06 | In set camshaft medium and heavy engine valve clearance hydraulic adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108915815A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04159404A (en) * | 1990-10-19 | 1992-06-02 | Nittan Valve Kk | Hydraulic lash adjuster |
| CN101158297A (en) * | 2006-10-06 | 2008-04-09 | 福特环球技术公司 | Pushrod engine with multiple independent lash adjusters for each pushrod |
| JP2013221491A (en) * | 2012-04-19 | 2013-10-28 | Toyota Motor Corp | Rush adjuster and its mounting method |
| CN204877572U (en) * | 2015-09-06 | 2015-12-16 | 泉州智信专利技术开发有限公司 | Put overhead valve valve timing mechanism of camshaft down |
| CN205532746U (en) * | 2016-02-01 | 2016-08-31 | 江苏四达动力机械集团有限公司 | Valve clearance hydraulic pressure guiding mechanism |
-
2018
- 2018-09-06 CN CN201811037204.7A patent/CN108915815A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04159404A (en) * | 1990-10-19 | 1992-06-02 | Nittan Valve Kk | Hydraulic lash adjuster |
| CN101158297A (en) * | 2006-10-06 | 2008-04-09 | 福特环球技术公司 | Pushrod engine with multiple independent lash adjusters for each pushrod |
| JP2013221491A (en) * | 2012-04-19 | 2013-10-28 | Toyota Motor Corp | Rush adjuster and its mounting method |
| CN204877572U (en) * | 2015-09-06 | 2015-12-16 | 泉州智信专利技术开发有限公司 | Put overhead valve valve timing mechanism of camshaft down |
| CN205532746U (en) * | 2016-02-01 | 2016-08-31 | 江苏四达动力机械集团有限公司 | Valve clearance hydraulic pressure guiding mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |
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| RJ01 | Rejection of invention patent application after publication |