CN101907000A - Automatically adjusting hydraulic tappet of engine valve clearance - Google Patents
Automatically adjusting hydraulic tappet of engine valve clearance Download PDFInfo
- Publication number
- CN101907000A CN101907000A CN 201010212462 CN201010212462A CN101907000A CN 101907000 A CN101907000 A CN 101907000A CN 201010212462 CN201010212462 CN 201010212462 CN 201010212462 A CN201010212462 A CN 201010212462A CN 101907000 A CN101907000 A CN 101907000A
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- CN
- China
- Prior art keywords
- plunger
- tappet
- pressure cavity
- hydraulic tappet
- oil
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- 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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Abstract
The invention relates to an automatically adjusting device of an engine valve clearance, in particular to an automatically adjusting hydraulic tappet of the engine valve clearance, aiming to solve the problem of difficult oil return in the hydraulic tappet. An oil hole is arranged in the outer circular surface of a plunger of the original hydraulic tappet and is communicated with a low-pressure cavity and a clearance between the plunger and a tappet body, and the low-pressure cavity and the clearance between the plunger and the tappet body are communicated with a high-pressure cavity; and in order to achieve the effect of better oil return, a ring slot is arranged on the outer circular surface of the plunger and around the plunger, and the oil hole is arranged in the ring slot. When the space of the high-pressure cavity is reduced by pressing the hydraulic tappet, oil in the high-pressure cavity leaks out of a clearance between the matching surfaces of the outer circle of the plunger and the inner hole of the tappet body and enters the low-pressure cavity through the oil hole in the ring slot on the outer circle of the plunger, thereby an oil return path in the hydraulic tappet is formed. The automatic adjusting hydraulic tappet effectively solves the problem of high oil consumption of engine oil not entering the low-pressure cavity at the initial running stage of the engine and is mainly applied to automatically adjusting the oil path of the hydraulic tappet for the engine.
Description
Technical field
The present invention relates to the engine valve clearance automatic control tegulatingdevice, particularly relate to a kind of hydraulic tappet that is used to solve hydraulic tappet oil circuit loop.
Technical background
The self-regulating hydraulic tappet in available engine valve clearance, it is discontented or engine running initial stage fuel feeding is untimely because of the hydraulic tappet interior oil when installation initial stage and motor are placed for a long time, cause easily hydraulic tappet because of inner oil starvation causes tappet can't proper functioning, abnormal sound appears in motor (hydraulic tappet).Influence the proper functioning and the maintenance difficult of motor, significantly shortened the working life of motor.
Summary of the invention
The objective of the invention is to solve the problem of the inner oil return difficulty of hydraulic tappet, provide a kind of engine valve clearance self-adjusting hydraulic tappet, a way to cycle oil be can form in inside, the fuel feeding state of motor supply hydraulic tappet and the up-time of hydraulic tappet prolonged greatly.
For achieving the above object, the technical solution used in the present invention is: the self-adjusting hydraulic tappet of engine valve clearance, comprise the tappet body, tappet body one end opening, the plunger lower end places in the tappet body, plunger periphery and tappet body inwall Spielpassung, plunger hollow and bottom opening, opening is provided with one by the inner outside one-way valve steel ball of plunger, the one-way valve steel ball is arranged in the check valve spring seat, and supported by check valve spring, the check valve spring seat is supported in tappet body inner bottom part, plunger by plunger return spring, check valve spring seat bottom surface forms a hyperbaric chamber with tappet body inner bottom part, the plunger hollow part is a low-pressure cavity, offer oilhole on the described plunger periphery, oilhole is communicated with the gap between low-pressure cavity and plunger and the tappet body, and low-pressure cavity and plunger are communicated with hyperbaric chamber with gap between the tappet body.
Offer annular groove around plunger on the plunger periphery, oilhole is arranged in the annular groove.
From the feature of the invention described above as can be seen, its advantage is: by establishing an annular groove and an oilhole on the hydraulic tappet plunger periphery, and communicate with low-pressure cavity.When hydraulic tappet work pressurized, hydraulic tappet hyperbaric chamber space diminishes, the oil of hyperbaric chamber under high pressure leaks by the gap between plunger cylindrical and tappet body endoporus fitting surface, and fluid enters low-pressure cavity by the oilhole of plunger annular groove outside, forms the inner oil return circuit of hydraulic tappet.Effectively solved the engine running initial stage, machine oil does not enter the oil mass of using of low-pressure cavity.Guarantee the hydraulic tappet proper functioning.
Description of drawings
The present invention will illustrate by way of compared with accompanying drawings and combined with example:
Fig. 1 is a structure cross-sectional schematic of the present invention
Fig. 2 is a partial structurtes schematic representation of the present invention
The 4th, check valve spring seat 5 is that check valve spring 6 is plunger return springs
The 7th, hyperbaric chamber 8 is that low-pressure cavity 9 is that oilhole 10 is annular grooves
Embodiment
The present invention is described further by embodiment below in conjunction with accompanying drawing:
Preferred embodiment
The self-adjusting hydraulic tappet of engine valve clearance as depicted in figs. 1 and 2, by on plunger 2 peripheries of hydraulic tappet, offering oilhole 9, low-pressure cavity 8 and hyperbaric chamber 7 are communicated with, when the hydraulic tappet pressurized, hydraulic tappet hyperbaric chamber 7 spaces diminish, the oil of hyperbaric chamber 7 under high pressure leaks by the gap between plunger 2 cylindricals and tappet body 1 endoporus fitting surface, and fluid enters low-pressure cavity 8 by the oilhole 9 of plunger 2 cylindricals, forms the inner oil return circuit of hydraulic tappet.In order to make the oil circuit loop reach better effect, we offer annular groove 10 on plunger 2 cylindricals, oilhole 9 is arranged in the annular groove 10, so just can comprehensively the oil of coming from hyperbaric chamber 7 all be sent to low-pressure cavity 8, make whole oil circuit loop reach best effect.Can effectively solve the oil mass of using that engine running initial stage machine oil does not enter low-pressure cavity 8, guarantee the hydraulic tappet proper functioning.
Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Claims (2)
1. the self-adjusting hydraulic tappet of engine valve clearance, comprise tappet body (1), tappet body (1) one end opening, plunger (2) lower end places in the tappet body (1), plunger (2) periphery and tappet body (1) inwall Spielpassung, plunger (2) hollow and bottom opening, opening is provided with one by the inner outside one-way valve steel ball (3) of plunger (2), one-way valve steel ball (3) is arranged in the check valve spring seat (4), and support by check valve spring (5), check valve spring seat (4) is supported in tappet body (1) inner bottom part by plunger return spring (6), plunger (2), check valve spring seat (4) bottom surface forms a hyperbaric chamber (7) with tappet body (1) inner bottom part, plunger (2) hollow part is low-pressure cavity (8), it is characterized in that offering oilhole (9) on described plunger (2) periphery, oilhole (9) is communicated with the gap between low-pressure cavity (8) and plunger (2) and the tappet body (1), and low-pressure cavity (8) and plunger (2) are communicated with hyperbaric chamber (7) with gap between the tappet body (1).
2. the self-adjusting hydraulic tappet of engine valve clearance according to claim 1 is characterized in that offering annular groove (10) around plunger (2) on plunger (2) periphery, and oilhole (9) is arranged in the annular groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212462 CN101907000A (en) | 2010-06-29 | 2010-06-29 | Automatically adjusting hydraulic tappet of engine valve clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212462 CN101907000A (en) | 2010-06-29 | 2010-06-29 | Automatically adjusting hydraulic tappet of engine valve clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101907000A true CN101907000A (en) | 2010-12-08 |
Family
ID=43262565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010212462 Pending CN101907000A (en) | 2010-06-29 | 2010-06-29 | Automatically adjusting hydraulic tappet of engine valve clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101907000A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867243A (en) * | 2014-01-01 | 2014-06-18 | 陆庆兵 | Hydraulic tappet structure |
| CN106368760A (en) * | 2016-08-30 | 2017-02-01 | 中国第汽车股份有限公司 | Engine valve slow seating mechanism |
| CN111472859A (en) * | 2020-05-26 | 2020-07-31 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
| CN112554987A (en) * | 2020-12-10 | 2021-03-26 | 蚌埠市广瑞机械有限公司 | Stepless variable valve lift hydraulic tappet assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10010597A1 (en) * | 2000-03-03 | 2001-09-06 | Mahle Ventiltrieb Gmbh | Hydraulic tappet clearance compensation element esp. for gas exchange valve control in IC engines has volume-varying adjuster piston sealed via sliding seal ring |
| CN2462075Y (en) * | 2001-01-08 | 2001-11-28 | 宜宾天工机械股份有限公司 | Hydraulic tappet capable of automatically adjusting engine valve clearance |
| CN201269115Y (en) * | 2008-10-28 | 2009-07-08 | 陈恳 | Hydraulic tappet component of single-cylinder air-cooled diesel engine |
-
2010
- 2010-06-29 CN CN 201010212462 patent/CN101907000A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10010597A1 (en) * | 2000-03-03 | 2001-09-06 | Mahle Ventiltrieb Gmbh | Hydraulic tappet clearance compensation element esp. for gas exchange valve control in IC engines has volume-varying adjuster piston sealed via sliding seal ring |
| CN2462075Y (en) * | 2001-01-08 | 2001-11-28 | 宜宾天工机械股份有限公司 | Hydraulic tappet capable of automatically adjusting engine valve clearance |
| CN201269115Y (en) * | 2008-10-28 | 2009-07-08 | 陈恳 | Hydraulic tappet component of single-cylinder air-cooled diesel engine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867243A (en) * | 2014-01-01 | 2014-06-18 | 陆庆兵 | Hydraulic tappet structure |
| CN106368760A (en) * | 2016-08-30 | 2017-02-01 | 中国第汽车股份有限公司 | Engine valve slow seating mechanism |
| CN111472859A (en) * | 2020-05-26 | 2020-07-31 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
| CN111472859B (en) * | 2020-05-26 | 2024-05-03 | 潍坊力创电子科技有限公司 | Hydraulic tappet |
| CN112554987A (en) * | 2020-12-10 | 2021-03-26 | 蚌埠市广瑞机械有限公司 | Stepless variable valve lift hydraulic tappet assembly |
| CN112554987B (en) * | 2020-12-10 | 2023-12-12 | 安徽东晟汽车部件科技有限公司 | Stepless variable valve lift hydraulic tappet assembly |
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Open date: 20101208 |