CN206311264U - Engine cylinder pressure measuring device - Google Patents
Engine cylinder pressure measuring device Download PDFInfo
- Publication number
- CN206311264U CN206311264U CN201621411814.5U CN201621411814U CN206311264U CN 206311264 U CN206311264 U CN 206311264U CN 201621411814 U CN201621411814 U CN 201621411814U CN 206311264 U CN206311264 U CN 206311264U
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- CN
- China
- Prior art keywords
- cylinder pressure
- engine
- testing tube
- measuring device
- tubulose connector
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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 utility model discloses a kind of engine cylinder pressure measuring device, including upper end is used to installing the testing tube of cylinder pressure table, lower end and is used for the check valve of the tubulose connector and connect setting that are connected with engine spark plug hole between tubulose connector upper end and testing tube lower end；By setting check valve on testing tube, check valve sets near spark-plug hole position and is connected with tubulose connector, tubulose connector length is far smaller than test length of tube, check valve controls compressed gas from tubulose connector to testing tube one-way flow, so cause that the engine combustion chamber volume that cylinder pressure table is tested is closer to normal engine combustion volume, rather than be volume of the volume of cylinder plus testing tube, so that the accuracy of test result is greatly improved；And be connected with spark-plug hole by tubulose connector, it is easy to connect, and be hardly damaged, without outside workman by Manpower frock, test result can ensure unanimously under different operatives.
Description
Technical field
The utility model is related to engine performance detection field, more particularly to a kind of engine cylinder pressure measuring device.
Background technology
, it is necessary to carry out the platform experiment of engine in the designing and developing of engine product, to the operation conditions of engine
Detected, obtained the performance parameter in its running, such as air leakage of pressure, cylinder in engine cylinder etc., so as to
In the design process according to rig test result to product section shape, result, size and relative link position relation even institute
It is adjusted, corrects and supplemented with material etc., obtains preferable product design effect.Cylinder pressure detection is that one of them is more important
Index, in the prior art, either petrol engine, or Diesel engine, to cylinder pressure detection technology it is all very ripe,
Mainly using cylinder pressure table measurement, its specific practice is that testing tube is provided with cylinder pressure table, and the head of testing tube is provided with taper
Rubber stopper, engine is dismantled after spark plug, cone rubber plug is pressed at spark-plug location and is tested, and one is easy rubber stopper
Damage, and the pressure size of people's pressure frock is different, same engine changes different workmans and is tested, and test result differs
Sample, error is larger；Two are, testing tube inner space directly connects with piston cylinder, and in test, the inside equivalent to testing tube is empty
Between belong to the part of piston cylinder volume, the cylinder pressure of cylinder pressure table test is the appearance that testing tube volume is added together with piston cylinder volume
Power is overstock, the volume for thus virtually causing piston cylinder to compress becomes big, and test result is less than normal, and test accuracy is substantially reduced.
Accordingly, it would be desirable to be improved to existing engine cylinder pressure measuring device, make its simple structure, it is easy to use, protect
Card test result under different operatives is consistent, and the volume that piston cylinder compresses will not be caused to become big, it is ensured that test knot
The accuracy of fruit.
Utility model content
In view of this, the utility model provides a kind of engine cylinder pressure measuring device, and its simple structure, it is easy to use is protected
Card test result under different operatives is consistent, and the volume that piston cylinder compresses will not be caused to become big, it is ensured that test knot
The accuracy of fruit.
Engine cylinder pressure measuring device of the present utility model, including upper end is used to install the testing tube of cylinder pressure table, lower end use
In the tubulose connector and connect setting being connected with engine spark plug hole between tubulose connector upper end and testing tube lower end
Check valve.
Further, check valve is detachably connected with testing tube lower end.
Further, check valve is detachably connected with tubulose connector upper end.
Further, the screw thread pipeline section for being threadedly coupled with engine spark plug hole is formed at tubulose connector bottom.
Further, it is additionally provided with tubulose connector for the sealing pair sealed with the formation of engine spark plug hole junction
Circle.
Further, it is additionally provided with tubulose connector and forms spacing spacing during for being connected with engine spark plug hole
Shoulder, sealing ring is installed at limited shoulder lower surface.
Further, testing tube upper end forms the threaded connector for being threadedly coupled with cylinder pressure table.
Further, testing tube axial length and the ratio range of tubulose connector axial length are 4-6.
The beneficial effects of the utility model：Engine cylinder pressure measuring device of the present utility model, sets by testing tube
Check valve is put, check valve sets near spark-plug hole position and is connected with tubulose connector, and tubulose connector length is far smaller than
Test length of tube, check valve controls compressed gas from tubulose connector to testing tube one-way flow, so that cylinder pressure table is tested
Engine combustion chamber volume be closer to normal engine combustion volume, rather than be appearance of the volume of cylinder plus testing tube
Product, so that the accuracy of test result is greatly improved；And be connected with spark-plug hole by tubulose connector, it is easy to connect,
And be hardly damaged, without outside workman by Manpower frock, test result can ensure unanimously under different operatives.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is the utility model structure overall schematic；
Fig. 2 is the utility model structure sectional view.
Specific embodiment
Fig. 1 is the utility model structure overall schematic, and Fig. 2 is the utility model structure sectional view, as shown in the figure：This reality
The engine cylinder pressure measuring device of example is applied, including upper end is used for and engine spark for installing the testing tube 1, lower end of cylinder pressure table
Check valve 3 of the tubulose connector 2 and connect setting of consent connection between the upper end of tubulose connector 2 and the lower end of testing tube 1；Such as
Shown in figure, check valve 3 is arranged on the lower end of testing tube 1 and the upper end of tubulose connector 2 directly, and connecting test pipe 1 and tubulose respectively
Instrument connection 4 is formed in connector 2, testing tube 1, tubulose connector 2 is hollow to form opening 5, and the control compressed gas of check valve 3 is managed certainly
To the one-way flow of testing tube 1, check valve 3 can be spring-loaded plunger check valve 3 or be diaphragm type one-way valve 3 shape connector 2；In addition,
Testing tube 1 can be direct rod shape structure or be hose construction, and tubulose connector 2 is made up of metal material, with certain rigidity, without
It is connected with spark-plug hole by manually press-fiting, the utility model when in use, in the upper end connection cylinder pressure table of testing tube 1, will be sent out
Motivation spark plug is disassembled from spark-plug hole, then tubulose connector 2 is installed at spark-plug hole and be can be used.
In the present embodiment, check valve 3 is detachably connected with the lower end of testing tube 1；The lower end of testing tube 1 is screw thread with check valve 3
Connection forms Detachable connection structure, easy for removal and installation, in order to change.
In the present embodiment, check valve 3 is detachably connected with the upper end of tubulose connector 2；On check valve 3 and tubulose connector 2
End is connected through a screw thread to form Detachable connection structure, and the tubulose connection of counter structure can be set according to the type of different engines
First 2, this sample frock is for different engines using can directly change corresponding tubulose connector 2.
In the present embodiment, the screw thread pipeline section for being threadedly coupled with engine spark plug hole is formed at the bottom of tubulose connector 2
2-1；Screw thread pipeline section 2-1 is used to be threadedly coupled with engine spark plug hole, when cylinder pressure is tested, the spark plug of former machine is dismantled
Fall, this frock of screwing on just can be tested, threaded connection is more more reliable than traditional connection, more preferably, test structure is closer in fact for air-tightness
Actual value.
In the present embodiment, be additionally provided with tubulose connector 2 for pair with engine spark plug hole junction formed sealing
Sealing ring 6；After tubulose connector 2 is installed in engine spark plug hole, sealing ring is supported and terminates in shape on the outside of spark-plug hole aperture
Into sealing.
In the present embodiment, form spacing when being additionally provided with tubulose connector 2 for being connected with engine spark plug hole
Limited shoulder 2-2, sealing ring is installed at limited shoulder lower surface.
In the present embodiment, the upper end of testing tube 1 forms the threaded connector 1-1 for being threadedly coupled with cylinder pressure table；Test
Pipe 1 is threadedly coupled with cylinder pressure table, and not only connection disassembling is convenient, and more more reliable than traditional connection, and air-tightness is more preferable.
In the present embodiment, the axial length of testing tube 1 is 4-6 with the ratio range of the axial length of tubulose connector 2；That is tubulose
The length of connector 2 is far smaller than the axial length of testing tube 1 so that after overall structure is installed, check valve 3 is closer to start
The spark-plug hole position of machine, compared with check valve 3 is not added with, engine combustion chamber volume is closer to normally start during test
Machine combustion chamber volume, it is more accurate to test.
Finally illustrate, above example is only used to illustrate the technical solution of the utility model and unrestricted, although ginseng
The utility model has been described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from the objective and model of technical solutions of the utility model
Enclose, it all should cover in the middle of right of the present utility model.
Claims (8)
1. a kind of engine cylinder pressure measuring device, it is characterised in that：It is used to that the testing tube of cylinder pressure table, lower end use are installed including upper end
In the tubulose connector and connect setting being connected with engine spark plug hole between tubulose connector upper end and testing tube lower end
Check valve.
2. engine cylinder pressure measuring device according to claim 1, it is characterised in that：The check valve and the testing tube
Lower end is detachably connected.
3. engine cylinder pressure measuring device according to claim 1, it is characterised in that：The check valve connects with the tubulose
Upper end of joint is detachably connected.
4. engine cylinder pressure measuring device according to claim 1, it is characterised in that：The tubulose connector bottom is formed
For the screw thread pipeline section being threadedly coupled with engine spark plug hole.
5. engine cylinder pressure measuring device according to claim 1, it is characterised in that：Also set up on the tubulose connector
Have for pair sealing ring sealed with the formation of engine spark plug hole junction.
6. engine cylinder pressure measuring device according to claim 5, it is characterised in that：Also set up on the tubulose connector
Have and spacing limited shoulder is formed during for being connected with engine spark plug hole, the sealing ring is installed at limited shoulder lower surface.
7. engine cylinder pressure measuring device according to claim 1, it is characterised in that：The testing tube upper end forms and is used for
The threaded connector being threadedly coupled with cylinder pressure table.
8. the engine cylinder pressure measuring device according to claim 1-7 any claims, it is characterised in that：The test
Pipe axial length is 4-6 with the ratio range of tubulose connector axial length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621411814.5U CN206311264U (en) | 2016-12-21 | 2016-12-21 | Engine cylinder pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621411814.5U CN206311264U (en) | 2016-12-21 | 2016-12-21 | Engine cylinder pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206311264U true CN206311264U (en) | 2017-07-07 |
Family
ID=59245594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621411814.5U Active CN206311264U (en) | 2016-12-21 | 2016-12-21 | Engine cylinder pressure measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206311264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500998A (en) * | 2016-12-21 | 2017-03-15 | 重庆小康工业集团股份有限公司 | Cylinder pressure of engines test fixture |
-
2016
- 2016-12-21 CN CN201621411814.5U patent/CN206311264U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500998A (en) * | 2016-12-21 | 2017-03-15 | 重庆小康工业集团股份有限公司 | Cylinder pressure of engines test fixture |
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