CN1687734A - Air distributing device in visual testing engine - Google Patents
Air distributing device in visual testing engine Download PDFInfo
- Publication number
- CN1687734A CN1687734A CNA2005100462675A CN200510046267A CN1687734A CN 1687734 A CN1687734 A CN 1687734A CN A2005100462675 A CNA2005100462675 A CN A2005100462675A CN 200510046267 A CN200510046267 A CN 200510046267A CN 1687734 A CN1687734 A CN 1687734A
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- valve
- exhausting
- exhaust
- distributing device
- vent
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Abstract
The invention is the gas distribution equipment in the engine visualization testing and belongs to the engine visualization testing technology. The invention leaves the enough space at the sealed transparent window of the cover top. The lining block with the exhausting channel and the visualized hole between the cylinder cover and the cylinder jacket; the exhausting valve group is set on the exhausting valve fixed at one side of the cylinder cover; the exhausting chamber in the valve connects the combustion chamber through the exhausting channel; revolve the exhausting handle 180 Deg. to drive the exhausting valve in the original cam driving machine. The invention can correctly control the time of the engine exhausting. The structure is simple and the operation is reliable.
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, rocking arm, push rod and a sealed transparent form.Valve cam drives the gas admittance valve group through push rod, 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, 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 vent valve valve disc, 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, 5,5a, 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, 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); Intake valve group (4); Air bleeding valve group (7); Rocking arm (5) (5a); Push rod (6) and a sealed transparent form; Valve cam is through push rod (6); Rocking arm (5) drives into air 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; Air bleeding 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; Rocking arm (5a) drives air bleeding valve group (7); Be provided with exhaust passage (9) between discharge chamber (8) and combustion chamber (10), discharge chamber (8) is provided with the steam vent (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, 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 true CN1687734A (en) | 2005-10-26 |
| CN100443877C 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062020A (en) * | 2011-01-05 | 2011-05-18 | 北京航空航天大学 | Transparent combustion chamber with square interior passage |
| CN103792090A (en) * | 2013-07-12 | 2014-05-14 | 江苏大学 | Diesel engine in-cylinder spraying and combustion visualization testing apparatus and testing method |
| WO2020019586A1 (en) * | 2018-07-24 | 2020-01-30 | 江苏大学 | Visual test bed device with rotary inflow channel for turbulent combustion with low heat loss |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6226562Y2 (en) * | 1981-03-10 | 1987-07-08 | ||
| 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
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062020A (en) * | 2011-01-05 | 2011-05-18 | 北京航空航天大学 | Transparent combustion chamber with square interior passage |
| CN102062020B (en) * | 2011-01-05 | 2013-12-18 | 北京航空航天大学 | Transparent combustion chamber with square interior passage |
| CN103792090A (en) * | 2013-07-12 | 2014-05-14 | 江苏大学 | Diesel engine in-cylinder spraying and combustion visualization testing apparatus and testing method |
| 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 |
| WO2020019586A1 (en) * | 2018-07-24 | 2020-01-30 | 江苏大学 | Visual test bed device with rotary inflow channel for turbulent combustion with low heat loss |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100443877C (en) | 2008-12-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |