CN206146645U - Valve timing mechanism test device - Google Patents
Valve timing mechanism test device Download PDFInfo
- Publication number
- CN206146645U CN206146645U CN201621124745.XU CN201621124745U CN206146645U CN 206146645 U CN206146645 U CN 206146645U CN 201621124745 U CN201621124745 U CN 201621124745U CN 206146645 U CN206146645 U CN 206146645U
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- CN
- China
- Prior art keywords
- valve
- timing mechanism
- spring
- valve timing
- test
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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.)
- Expired - Fee Related
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- Testing Of Engines (AREA)
Abstract
The utility model provides a valve timing mechanism test device, including the valve that awaits measuring, set up gas gate lock on the valve, install spring holder, spiral shell with awaiting measuring the coaxial setting of valve on gas gate lock and close at the terminal hood of valve, set up the valve spring between spring holder and valve timing mechanism, its technical essential is: gas gate lock semicircular in shape, the spring holder bottom is equipped with pressure sensor with valve spring's the department of correspondence. It is difficult to accurate test valve timing mechanism operation law to have compensatied traditional test means to can effectively test out each spare part actual operation state of valve timing mechanism, realize verifying the design, rectify the purpose that designs.
Description
Technical field
This utility model belongs to gas engine part detection field, and in particular to a kind of valve actuating mechanism assay device.
Background technology
At present in the machinery industries such as automobile making, internal combustion engine, valve actuating mechanism test is new test, is mainly used in internally
The testing experiment of combustion engine valve actuating mechanism performance study.Because I. C engine distribution mechanism number of parts is more, and part running speed is fast,
It is difficult to accurate measurement, cam profile measurement means limitation.
Utility model content
The purpose of this utility model is to provide a kind of valve actuating mechanism assay device, compensate for traditional test means and is difficult to accurately
Test valve actuating mechanism transfer regularity, and can Validity Test go out each parts actual working state of valve actuating mechanism, realize checking design,
The purpose of correction design.
For achieving the above object, this utility model employs following technical scheme：The valve actuating mechanism assay device includes treating
Survey valve, be arranged on laterostigmatal valve collet, the spring base being coaxially disposed with valve to be measured on valve collet, spiral shell
Top cap, the valve spring that is arranged between spring base and valve actuating mechanism in valve end is closed, is characterized in that：The valve
Lock semicircular in shape, spring base bottom is provided with pressure transducer with the corresponding position of valve spring.
The top cap bottom is provided with laser sensor.
The beneficial effects of the utility model：Internal combustion valve mechanism actual motion status data can directly be tested, without the need for
Placement sensor on tested cylinder cap, does not change tested valve mechanism quality, tested valve mechanism is retained to greatest extent and is truly operated
State, is operated using motor towing astern, it is not necessary to whole machine igniting, is saved internal combustion engine overall test fuel consumption, human resourcess and is set
The standby cost for consuming.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is kinetic test result curve.
Description of reference numerals：
In Fig. 1：1 valve collet, 2 top caps, 3 spring bases, 4 valve spring, 5 valves to be measured；
In Fig. 2：A valve accelerations (mm/rad^2), B（After calculating）Valve speed（mm/rad）、C（After calculating）Valve liter
Valve acceleration (mm/rad^2) after journey, D calculating.
Specific embodiment
Below in conjunction with Fig. 1 ~ 2, content of the present utility model is described in detail by specific embodiment.
Embodiment 1
The valve actuating mechanism assay device includes valve to be measured 5, is arranged on laterostigmatal valve collet 1, locks installed in valve
The spring base 3 being coaxially disposed with valve to be measured buckled, the top cap 2 for being screwed on valve end, it is arranged on spring base and gazogene
Valve spring 4 between structure, the semicircular in shape of valve collet 1, the bottom of spring base 3 is provided with pressure sensing with the corresponding position of valve spring
Device（Not shown in figure）.
On special valve actuating mechanism testing stand, valve actuating mechanism test simulation model machine and electric dynamometer power transmission shaft are connected
Connect, electric dynamometer is originated as valve actuating mechanism test simulation model machine driving force, the moment of torsion flange that measurement of power machine shaft end is installed is used for
Valve actuating mechanism driving moment is measured, valve actuating mechanism frictional work level is assessed；Testing stand is equipped with machine oil constant temperature and pressure and adjusts
Device, to provide necessary lubrication for valve actuating mechanism；The differential type vibration measurement with laser of applications exploiting laser Doppler principle design
Instrument, in tested cylinder cap valve stroke, valve crash speed are measured directly below；Rocking arm or tappet stress are surveyed by semibridge system foil gauge
Amount；Photoelectric rotary coder on tail end of camshaft technique axle, for accurate measurement camshaft speed and the anglec of rotation
Degree；Three-way vibration sensor is pasted onto on simulation cylinder body and tested cylinder cap, measures valve system vibration characteristics；Using Siemens
LMS angle domains analysis software and number adopt equipment, and the camshaft speed signal and laser vibration measurer for gathering rotary encoder output is defeated
The valve mechanism displacement for going out and rate signal, and strain signal, using the software signal post-processing and analysis are carried out.
Test is carried out in following condition：
Operating condition of test：Valve mechanism will be investigated from low idling（Depending on electromotor）To full load highest permissible velocity scope
Interior all operating modes, including the measurement of hypervelocity operating mode；Measurement parameter includes valve stroke, the speed of all valves of each cylinder；
All rocking arms or tappet contact stress of each cylinder.Boundary condition：Oil temperature：100℃（Cylinder head engine oil supplying）.
Oil pressure：During engine speed≤1500rpm, oil pressure is set to 1.5bar；
During engine speed ＞ 1500rpm, oil pressure is set to 2.5bar.
The first step for carrying out Valve Dynamics test is the kinematics characteristic for checking valve actuating mechanism.Firstly the need of in gas
The valve collet of one metal is installed between header and valve tappet.This valve collet makes valve open when being in cam base circle
Open, make valve and seat ring keep maximum 0.3mm distances.For the kinetics lifting curve of valve is tested, should be according to the following is four
Item test configurations are carried out：
A01：Maximum valve spring force and minimum valve clearance；
A02：Maximum valve spring force and maximum valve clearance；
A03：Minimum valve spring force and minimum valve clearance；
A04：Minimum valve spring force and maximum valve clearance.
Embodiment 2
Also laser sensor can be provided with top cap bottom（Not shown in figure）.For determining the rotating cycle of lock, other
Structure is with embodiment 1.
Claims (2)
1. a kind of valve actuating mechanism assay device, including valve to be measured, be arranged on laterostigmatal valve collet, installed in valve collet
On the spring base being coaxially disposed with valve to be measured, be screwed on valve end top cap, be arranged on spring base and valve actuating mechanism it
Between valve spring, it is characterised in that：The valve collet semicircular in shape, spring base bottom is provided with the corresponding position of valve spring
Pressure transducer.
2. valve actuating mechanism assay device according to claim 1, it is characterised in that：The top cap bottom is provided with laser sensing
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621124745.XU CN206146645U (en) | 2016-10-16 | 2016-10-16 | Valve timing mechanism test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621124745.XU CN206146645U (en) | 2016-10-16 | 2016-10-16 | Valve timing mechanism test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206146645U true CN206146645U (en) | 2017-05-03 |
Family
ID=58620088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621124745.XU Expired - Fee Related CN206146645U (en) | 2016-10-16 | 2016-10-16 | Valve timing mechanism test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206146645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560861A (en) * | 2017-10-20 | 2018-01-09 | 安徽工程大学 | A kind of double friction pair composite analogy experimental systems of valve actuating mechanism |
| CN112284700A (en) * | 2020-09-14 | 2021-01-29 | 东风汽车集团有限公司 | Method and system for testing gas distribution mechanism kinematics characteristics |
-
2016
- 2016-10-16 CN CN201621124745.XU patent/CN206146645U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560861A (en) * | 2017-10-20 | 2018-01-09 | 安徽工程大学 | A kind of double friction pair composite analogy experimental systems of valve actuating mechanism |
| CN112284700A (en) * | 2020-09-14 | 2021-01-29 | 东风汽车集团有限公司 | Method and system for testing gas distribution mechanism kinematics characteristics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20211016 |