CN2462075Y - Hydraulic tappet capable of automatically adjusting engine valve clearance - Google Patents
Hydraulic tappet capable of automatically adjusting engine valve clearance Download PDFInfo
- Publication number
- CN2462075Y CN2462075Y CN 01213862 CN01213862U CN2462075Y CN 2462075 Y CN2462075 Y CN 2462075Y CN 01213862 CN01213862 CN 01213862 CN 01213862 U CN01213862 U CN 01213862U CN 2462075 Y CN2462075 Y CN 2462075Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- valve clearance
- oil cavity
- valve
- pressure oil
- 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 - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to a hydraulic tappet of ability automatically regulated engine valve clearance. The plunger is characterized in that the plunger can stretch in the shell, a high-pressure oil cavity and a low-pressure oil cavity are arranged in the plunger, a check valve is arranged between the high-pressure oil cavity and the low-pressure oil cavity, and a return spring is arranged between the lower end face of the plunger and the upper end face of the bottom of the shell. Because the utility model has the above structure, so it can carry out automatically regulated to the valve clearance, not only can reduce the valve noise of engine effectively, keeps accurate distribution phase, need not to carry out the valve clearance adjustment moreover to reduce engine machine and maintained, improved job stabilization nature.
Description
The utility model relates to a kind of hydraulic tappet that can regulate engine valve clearance automatically.
In the past discharge capacity less than 1.6 liters engine valve actuating mechanism in, power is to pass to valve by the screw that is fixed on the rocking arm, owing to must consider the factor of thermal expansion, so when screw is installed and between the valve certain interval is arranged on rocking arm, this has just formed the valve clearance.Because the existence of valve clearance, screw and valve are when routing motion, the generation noise can run foul of each other, especially when the gap is undesirable, not only the engine valve noise increases, also can influence the port timing of motor, make the motor cisco unity malfunction, so the valve clearance needs often to adjust.When adjusting the valve clearance, need pull down engine cylinder cover, not only the process complexity is loaded down with trivial details, and adjustment technology is had relatively high expectations.
The purpose of this utility model provides a kind of hydraulic tappet that can regulate engine valve clearance automatically to remedy the deficiency of prior art, and this hydraulic tappet can replace the rigidity screw, makes the valve clearance remain at inferior limit.
The purpose of this utility model is to realize like this; A kind of hydraulic tappet that can regulate engine valve clearance automatically comprises housing and plunger, it is characterized in that: plunger can stretch in housing; High-voltage oil cavity and low pressure oil pocket are arranged in the plunger, fill with oil in high-voltage oil cavity and the low pressure oil pocket, between high-voltage oil cavity and the low pressure oil pocket connection oil duct is arranged, connecting under the oil duct has spheroid, the diameter of spheroid has spring to make spheroid be attached to the connection oil duct junction all the time greater than the diameter that connects oil duct under the spheroid; In the upper end of plunger lower end surface and housing bottom and between be provided with Returnning spring; Oilhole is arranged on the high-voltage oil cavity.
Owing to the utlity model has said structure,, not only can reduce the valve noise of motor effectively so it can automatically adjust to the valve clearance, keep port timing accurately, and need not to carry out the valve clearance adjustment, thereby reduced the engine mechanical maintenance, improved working stability.
Below by embodiment, and in conjunction with the accompanying drawings the utility model is further described:
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the user mode figure of the utility model in engine valve actuating mechanism.
Embodiment:
A kind of hydraulic tappet 1 that can regulate engine valve clearance automatically comprises housing 2 and plunger 3, and housing 2 and plunger 3 adopt precision pair to cooperate, and plunger 3 can stretch in housing 2; High-voltage oil cavity 4 and low pressure oil pocket 5 are arranged in the plunger 3, fill with oil in high-voltage oil cavity 4 and the low pressure oil pocket 5, the oil duct 6 of connection is arranged between high-voltage oil cavity 4 and the low pressure oil pocket 5, connect oil duct and 6 times spheroid 7 is arranged, the diameter of spheroid 7 is greater than the diameter that connects oil duct 6, and spheroid has for 7 times spring 8 to make spheroid 7 be attached to connection oil duct 6 all the time; Between the upper-end surface of plunger 3 lower end surfaces and housing 2 bottoms, be provided with Returnning spring 9; Oilhole 10 is arranged on the low pressure oil pocket 5.11 is valve, and 12 is rocking arm, and 13 is cam, and 14 is valve return.
In use, earlier the plunger 3 of hydraulic tappet 1 is contained in the rocker arm bracket hole, and the lower end of housing 2 is against on the valve.When cam 13 drive rocking arms 12 moved down hydraulic tappet 1, plunger 3 can past press down, and by high-voltage oil cavity 4 power is passed to housing 2, and housing 2 passes to valve to power and lift again.In this process, spheroid 7 at the effect lower seal of spring 8 high-voltage oil cavity 4.Because high-voltage oil cavity 4 volumes reduce, fraction oil can leak in the motor drainback passage from the gap of housing 2 and plunger 3.When cam 13 descends, valve return 14 makes up return of valve 11, valve 11 passes to housing 2 with power, at this moment, whole hydraulic tappet up moves, Returnning spring 9 can make plunger 3 up move with respect to housing 2, the volume of high-voltage oil cavity 4 is increased, form negative pressure, malleation acting in conjunction in this negative pressure and the engine oil path is in pressure spring, make spheroid 7 and connect between the oil duct 6 slit to occur, at this moment the oil in the engine oil path will enter in the high-voltage oil cavity 4 by low pressure oil pocket 5 and connecting passage 6 from oilhole 10.When whole hydraulic tappet 1 arrives atdc, just finished a cyclic process.
In the working procedure of hydraulic tappet 1, no matter be in any stage, the lower end all contacts valve 11 all the time, and this has just reduced the valve clearance greatly, has reduced noise; And when under various factors influence, after the valve clearance increased, Returnning spring 9 is the relative position of pilot plunger 3 and housing 2 automatically, was used to compensate the valve clearance of increase.
Claims (2)
1, a kind of hydraulic tappet that can regulate engine valve clearance automatically comprises housing and plunger, it is characterized in that: plunger can stretch in housing; High-voltage oil cavity and low pressure oil pocket are arranged in the plunger, fill with oil in high-voltage oil cavity and the low pressure oil pocket, between high-voltage oil cavity and the low pressure oil pocket one-way valve is arranged; Between the upper-end surface of plunger lower end surface and housing bottom, be provided with Returnning spring; Oilhole is arranged on the high-voltage oil cavity.
2, a kind of hydraulic tappet that can regulate engine valve clearance automatically as claimed in claim 1 is characterized in that: one-way valve is made up of steel ball and the spring that is applied to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01213862 CN2462075Y (en) | 2001-01-08 | 2001-01-08 | Hydraulic tappet capable of automatically adjusting engine valve clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01213862 CN2462075Y (en) | 2001-01-08 | 2001-01-08 | Hydraulic tappet capable of automatically adjusting engine valve clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2462075Y true CN2462075Y (en) | 2001-11-28 |
Family
ID=33632732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01213862 Expired - Lifetime CN2462075Y (en) | 2001-01-08 | 2001-01-08 | Hydraulic tappet capable of automatically adjusting engine valve clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2462075Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432377C (en) * | 2004-02-06 | 2008-11-12 | 谢弗勒公司 | Joining device for an actuating lever and a supporting element of a valve operating mechanism of a combustion engine |
| CN101305166B (en) * | 2005-11-08 | 2010-09-29 | 丰田自动车株式会社 | Sealed play adjuster and method for adjusting the amount of liquid sealed in the sealed play adjuster |
| CN101907000A (en) * | 2010-06-29 | 2010-12-08 | 绵阳富临精工机械有限公司 | Automatically adjusting hydraulic tappet of engine valve clearance |
| CN102733875A (en) * | 2012-06-12 | 2012-10-17 | 东风朝阳朝柴动力有限公司 | Roller-type hydraulic rocking arm component |
| CN104285044A (en) * | 2012-05-01 | 2015-01-14 | 卡特彼勒公司 | Internal combustion engine having valve lifters with misalignment limiting end caps |
-
2001
- 2001-01-08 CN CN 01213862 patent/CN2462075Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432377C (en) * | 2004-02-06 | 2008-11-12 | 谢弗勒公司 | Joining device for an actuating lever and a supporting element of a valve operating mechanism of a combustion engine |
| CN101305166B (en) * | 2005-11-08 | 2010-09-29 | 丰田自动车株式会社 | Sealed play adjuster and method for adjusting the amount of liquid sealed in the sealed play adjuster |
| CN101915136B (en) * | 2005-11-08 | 2011-12-21 | 丰田自动车株式会社 | Sealed lash adjuster |
| CN101907000A (en) * | 2010-06-29 | 2010-12-08 | 绵阳富临精工机械有限公司 | Automatically adjusting hydraulic tappet of engine valve clearance |
| CN104285044A (en) * | 2012-05-01 | 2015-01-14 | 卡特彼勒公司 | Internal combustion engine having valve lifters with misalignment limiting end caps |
| CN102733875A (en) * | 2012-06-12 | 2012-10-17 | 东风朝阳朝柴动力有限公司 | Roller-type hydraulic rocking arm component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110108 Granted publication date: 20011128 |