CN100443877C - Air distributing device in visual testing engine - Google Patents
Air distributing device in visual testing engine Download PDFInfo
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- CN100443877C CN100443877C CNB2005100462675A CN200510046267A CN100443877C CN 100443877 C CN100443877 C CN 100443877C CN B2005100462675 A CNB2005100462675 A CN B2005100462675A CN 200510046267 A CN200510046267 A CN 200510046267A CN 100443877 C CN100443877 C CN 100443877C
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- Prior art keywords
- valve
- gas exhaust
- distributing device
- exhaust valve
- vent
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- 230000000007 visual effect Effects 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 238000010304 firing Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The present invention relates to a gas distributing device of an engine in a visual test, and belongs to the technical field of the visual test of the engine. The gas distributing device reserves an enough space for arranging an airtight transparent window at the top of a cylinder cover. A pad block which is provided with a gas exhaust passage and a visual light inlet window hole is arranged between the cylinder cover and a cylinder jacket. A gas exhaust valve assembly is arranged on a gas exhaust valve body which is fixed on one side of the cylinder cover. A gas exhaust cavity which is positioned in the gas exhaust valve body is connected with a combustion chamber through the gas exhaust passage. A rocking arm of the gas exhaust valve is rotated at 180 DEG, and thus, an original cam drive mechanism conveniently drives the gas exhaust valve assembly. The gas distributing device can accurately control the gas exhaust timing of the engine, the structure is simple, the work is reliability, and the present invention is conveniently popularized and applied to various engines.
Description
Technical field
The present invention relates to the air distributing device in a kind of visual testing engine, it belongs to the visual testing engine technical field.
Background technology
As everyone knows, the photograph of engine cylinder internal procedure need the relevant position above piston be provided with the light well that can shine the cylinder fluid movement and the perpendicular photograph form hole (because of photograph location is different, the two effect can be exchanged) of finding a view.Because air intake duct and gas admittance valve are being undertaken the task of organizing air inlet and air inlet flow pattern and can not changed, without any available space, removing vent valve by contrast is the method that the most generally adopts at present on the very compact cylinder head of structural arrangement.Set up the visual condition in the engine cylinder, use that the PIV technology need be removed vent valve when carrying out flow-field test in the cylinder and with it as form.The way of the processing exhaust of often seeing is: solenoid valve method and spring block method promptly rely on the motion of the switching of solenoid valve or spring block to control the exhaust of engine.Because the characteristics of motion of solenoid valve and spring block is different fully with the characteristics of motion of engines distribution cam, genuine suspicion is still lost in the flow field of absorbing.On cylinder head, remove after the vent valve, how can solve the exhaust timing problem of engine exactly, caused that people extremely pay close attention to.
Summary of the invention
In order on cylinder head, to remove after the vent valve, can solve the exhaust timing problem of engine exactly, the invention provides the air distributing device in a kind of visual testing engine, this air distributing device should utilize original cam drive mechanism, drives the vent valve group that is arranged on cylinder head one side.This air distributing device should be simple in structure, and principle is clear, and reliable operation is convenient to use on various types.
The technical solution adopted for the present invention to solve the technical problems is: the air distributing device in a kind of visual testing engine, it mainly comprises a cylinder head, gas admittance valve group, vent valve group, first rocking arm, second rocking arm, push rod and a sealed transparent form.Valve cam drives the gas admittance valve group through push rod, first rocking arm.It also comprises an exhaust valve and cushion block.Cushion block is arranged between cylinder head and the cylinder jacket; Exhaust valve is fixed on the cylinder head that push rod one side is installed, and the vent valve group is arranged on the exhaust valve, is provided with discharge chamber in exhaust valve; Valve cam drives the vent valve group through push rod, second rocking arm; Be provided with the exhaust passage between discharge chamber and firing chamber, discharge chamber is provided with the vent port that communicates with atmosphere.At the ring bodies that is circumferentially with of the vent valve valve disc of described vent valve group, when vent valve was taken a seat, the lower plane of ring bodies external cylindrical surface was lower than the exhaust passage.The vent port that discharge chamber communicates with atmosphere is 1～3.
The guiding theory of technique scheme is: cushion block is arranged between cylinder head and the cylinder jacket, so that offer the exhaust passage on cushion block.Fix an exhaust valve on the cylinder head that push rod one side is installed, the vent valve group is arranged on the exhaust valve, exhaust valve rocker arm Rotate 180 degree, just can utilize original cam drive mechanism to drive the vent valve group easily.When vent valve was taken a seat, the exhaust passage was by the external cylindrical surface sealing of vent valve valve disc; It mainly is in order to reduce the weight of valve that valve disc adopts the ring bodies structure of indent.
The invention has the beneficial effects as follows: the air distributing device in this visual testing engine, owing between cylinder head and cylinder jacket, be provided with the cushion block of exhaust passage, the vent valve group is arranged on the exhaust valve that is fixed in cylinder head one side, as long as exhaust valve rocker arm Rotate 180 degree, just can utilize original cam drive mechanism to drive the vent valve group easily.This air distributing device can be controlled the exhaust timing of engine exactly, and simple in structure, principle is clear, and reliable operation is convenient to promote the use of on various engines.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural drawing of the air distributing device in a kind of visual testing engine.
Fig. 2 is the A-A cut-open view of exhaust valve shown in Fig. 1.
Fig. 3 is that B among Fig. 2 is to view.
Among the figure: 1, cylinder head, 2, exhaust valve, 3, cushion block, 4, gas admittance valve group, 5, first rocking arm, 5a, second rocking arm, 6, push rod, 7, vent valve group, 7a, vent valve, 7b, ring bodies, 7c, valve opening, 8, discharge chamber, 8a, vent port, 9, exhaust passage, 10, the firing chamber, 11, piston, 12, air intake duct, 13, cylinder jacket, 14, bolt.
Embodiment
In the embodiment shown in Fig. 1,2,3: engine is one 135 single cylinder diesel, forms a firing chamber 10 by cylinder head 1, piston 11 and cylinder jacket 13.Be provided with gas admittance valve group 4, quartz glass window and air intake duct 12 on cylinder head 1, valve cam drives gas admittance valve group 4 through push rod 6, first Rocker arm 5.Cushion block 3 is arranged between cylinder head 1 and the cylinder jacket 13; 6 bolts 14 of exhaust valve 2 usefulness are fastened on the cylinder head 1 that push rod 6 one sides are installed; Vent valve group 7 is arranged on the exhaust valve 2, is provided with discharge chamber 8 in exhaust valve 2; Be provided with exhaust passage 9 between discharge chamber 8 and firing chamber 10, exhaust passage 9 parts are positioned at exhaust valve 2, and another part is positioned on the cushion block 3; Discharge chamber 8 is provided with two vent port 8a that communicate with atmosphere.Vent valve 7a valve disc be circumferentially with ring bodies 7b, ring bodies 7b external cylindrical surface and valve opening 7c are for being sealed and matched.When vent valve 7a moved down unlatching, exhaust passage 9 communicated with discharge chamber 8, carries out exhaust.Move on vent valve 7a when taking a seat, the lower plane of ring bodies 7b external cylindrical surface is lower than exhaust passage 9, can seal exhaust passage 9 effectively.
Claims (3)
1, air distributing device in a kind of visual testing engine, it mainly comprises a cylinder head (1), gas admittance valve group (4), vent valve group (7), first rocking arm (5), second rocking arm (5a), push rod (6) and a sealed transparent form, valve cam is through push rod (6), first rocking arm (5) drives gas admittance valve group (4), it is characterized in that: further comprising an exhaust valve (2) and cushion block (3), cushion block (3) is arranged between cylinder head (1) and the cylinder jacket (13), exhaust valve (2) is fixed on the cylinder head (1) that push rod (6) one sides are installed, vent valve group (7) is arranged on the exhaust valve (2), in exhaust valve (2), be provided with discharge chamber (8), valve cam is through push rod, second rocking arm (5a) drives vent valve group (7), be provided with exhaust passage (9) between discharge chamber (8) and firing chamber (10), discharge chamber (8) is provided with the vent port (8a) that communicates with atmosphere.
2, according to the air distributing device in the described visual testing engine of claim 1, it is characterized in that: be circumferentially with ring bodies (7b) at vent valve (7a) valve disc of described vent valve group (7), when taking a seat, the lower plane of ring bodies (7b) external cylindrical surface is lower than exhaust passage (9) at vent valve (7a).
3, according to the air distributing device in the described visual testing engine of claim 1, it is characterized in that: the vent port (8a) that discharge chamber (8) communicates with atmosphere is 1～3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100462675A CN100443877C (en) | 2005-04-14 | 2005-04-14 | Air distributing device in visual testing engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100462675A CN100443877C (en) | 2005-04-14 | 2005-04-14 | Air distributing device in visual testing engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1687734A CN1687734A (en) | 2005-10-26 |
| CN100443877C true CN100443877C (en) | 2008-12-17 |
Family
ID=35305776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100462675A Expired - Fee Related CN100443877C (en) | 2005-04-14 | 2005-04-14 | Air distributing device in visual testing engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100443877C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062020B (en) * | 2011-01-05 | 2013-12-18 | 北京航空航天大学 | Transparent combustion chamber with square interior passage |
| CN103792090B (en) * | 2013-07-12 | 2016-01-27 | 江苏大学 | A kind of cylinder of diesel engine internal spraying and combustion visualization proving installation and method of testing |
| CN109164203A (en) * | 2018-07-24 | 2019-01-08 | 江苏大学 | A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438736A (en) * | 1981-03-10 | 1984-03-27 | Nissan Motor Co., Ltd. | Variable valve timing arrangement with automatic valve clearance adjustment |
| US5598820A (en) * | 1995-05-09 | 1997-02-04 | Edelbrock Corporation | Cylinder head for four stroke internal combustion engine |
| CN1281935A (en) * | 1999-07-27 | 2001-01-31 | 王亚民 | Engine diverter valve assembly |
| CN1525051A (en) * | 2003-09-15 | 2004-09-01 | 浙江大学 | Valve mechanism of pneumatic automobile engine |
| CN2806775Y (en) * | 2005-07-14 | 2006-08-16 | 大连理工大学 | Engine valve device |
-
2005
- 2005-04-14 CN CNB2005100462675A patent/CN100443877C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438736A (en) * | 1981-03-10 | 1984-03-27 | Nissan Motor Co., Ltd. | Variable valve timing arrangement with automatic valve clearance adjustment |
| US5598820A (en) * | 1995-05-09 | 1997-02-04 | Edelbrock Corporation | Cylinder head for four stroke internal combustion engine |
| CN1281935A (en) * | 1999-07-27 | 2001-01-31 | 王亚民 | Engine diverter valve assembly |
| CN1525051A (en) * | 2003-09-15 | 2004-09-01 | 浙江大学 | Valve mechanism of pneumatic automobile engine |
| CN2806775Y (en) * | 2005-07-14 | 2006-08-16 | 大连理工大学 | Engine valve device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1687734A (en) | 2005-10-26 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20110414 |