CN103590904B - A kind of valve rotation velocity measuring device - Google Patents
A kind of valve rotation velocity measuring device Download PDFInfo
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- CN103590904B CN103590904B CN201310552238.0A CN201310552238A CN103590904B CN 103590904 B CN103590904 B CN 103590904B CN 201310552238 A CN201310552238 A CN 201310552238A CN 103590904 B CN103590904 B CN 103590904B
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- shaped stator
- annulus shaped
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- insulator
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The present invention relates to a kind of valve rotation velocity measuring device, this device comprises annulus shaped stator, conductor support; Described annulus shaped stator suit is fixed on the oil sealing of valve, and is isolated by insulating material between cylinder shape stator and oil sealing; Electric conductor that annulus shaped stator is circular arc by cross section, that be fixed together and insulator are formed, and the height of electric conductor and insulator is greater than valve lift maximum value; One end of conductor support is connected with valve stem, and the other end contacts with the outer peripheral surface of annulus shaped stator, and conductor support and valve spring are not interfered.Utilize the present invention can measure the rotational speed of valve under various working condition at short notice, by progressively investigating, finding out the principal element affecting engine valve and rotate, thus solving the problem of wearing and tearing between valve and air valve seat ring.
Description
Technical field
The invention belongs to engine valve actuating mechanism technical field, relate to a kind of valve rotation velocity measuring device.
Background technique
Valve is the strength member in engine valve actuating mechanism, and valve end face engages with inlet and outlet rocking arm, and bottom surface is positioned at cylinder, subjects the impact of mechanical stress and high temperature simultaneously.
Valve works usually under high temperature, high rotating speed and pressure changeable environment, according to the requirement of motor, when 75% rated speed, valve must start to rotate, if non-rotary words, can cause valve eccentric wear, thus making engine valve poorly sealed, engine power declines.
Along with the raising of engine power and rotating speed, the operating conditions of valve is harsher; The increase of power can make the temperature of valve raise; The raising of engine speed, can make the mechanical stress of valve increase, and valve crash speed increases, and more easily eccentric wear and air valve seat ring excessive wear occurs.
Along with expanding economy, energy-efficiently become one of important means solving shortage of resources and environmental deterioration, and the research of wearing and tearing between valve and air valve seat ring is also one of energy-efficient faced concrete problem.
Therefore, find a kind of simple and effective method of measurement particularly important, its needs the rotational speed measuring valve under various different condition at short notice, then by progressively investigating, finds out principal element affect engine valve rotation.Domestic and there is no such device abroad at present.
Summary of the invention
The technical problem that the present invention will solve is to provide a kind of valve rotation velocity measuring device measuring valve rotation speed under various different condition at short notice.
In order to solve the problems of the technologies described above, valve rotation velocity measuring device of the present invention comprises annulus shaped stator, conductor support; Described annulus shaped stator suit is fixed on the oil sealing of valve, and is isolated by insulating material between cylinder shape stator and oil sealing; Electric conductor that annulus shaped stator is circular arc by cross section, that be fixed together and insulator are formed, and the height of electric conductor and insulator is greater than valve lift maximum value; One end of conductor support is connected with valve stem, and the other end contacts with the outer peripheral surface of annulus shaped stator, and conductor support and valve spring are not interfered.
Conductor support is connected in circuit with annulus shaped stator.In valve rotation process, because oil sealing is fixed block, the annulus shaped stator therefore on it maintains static, and conductor support rotates with valve stem; When the conductive body contact of conductor support and annulus shaped stator, circuit ON; When conductor support contacts with the insulator of annulus shaped stator, circuit breaker; Valve often revolves and turns around, and circuit is just connected once, exports the pulse square wave signal of a 5V, and by gathering this pulse square wave signal, the number of times that in the unit of account time, the pulse square wave signal of 5V occurs, can obtain the rotational speed of engine valve.
Utilize the present invention can measure the rotational speed of valve under various working condition at short notice, then by progressively investigating, find out principal element affect engine valve and rotate, thus the problem of wearing and tearing between solution valve and air valve seat ring.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is valve rotation velocity measuring device principle of measurement figure of the present invention.
Fig. 2 is the distribution device generalized section with valve rotation velocity measuring device of the present invention.
Position relationship schematic diagram between conductor support and annulus shaped stator when Fig. 3 is circuit turn-on.
Position relationship schematic diagram between conductor support and annulus shaped stator when Fig. 4 is circuit breaker.
In figure: 1. valve spring dish 2. valve spring 3. conductor support 4. oil sealing 5. electric conductor 6. spring pedestal 7. valve guide bushing 8. valve stem 9. insulator 10. annulus shaped stator 11. power supply 12. data acquistion system.
Embodiment
As shown in Figure 1, valve rotation velocity measuring device comprises annulus shaped stator 10, conductor support 3; Described annulus shaped stator 10 suit is fixed on the oil sealing 4 of valve, and is isolated by insulating material such as epoxy resin between cylinder shape stator 10 and oil sealing 4; Electric conductor 5 that annulus shaped stator 10 is circular arc by cross section, that be fixed together and insulator 9 are formed; One end of conductor support 3 is fixed on valve stem 8 by scolding tin, and the other end contacts with the outer peripheral surface of annulus shaped stator 10.
Described conductor support 3 is communicated with engine cylinder-body all the time, conductor support 3 is connected to an electrode of power supply 11 by engine cylinder-body, electric conductor 5 connects an insulated conductor, this wire is passed by the through hole on spring pedestal 6 and is connected to data acquistion system 12, and the other end of data acquistion system 12 is connected to another electrode of power supply 11; Conductor support 3 and annulus shaped stator 10 form a switch in circuit.
The present invention measures the rotational speed of valve by the break-make between monitoring electric conductor 5 and conductor support 3.
As shown in Figure 3,4, along with the rotation of valve, valve stem 8 drives conductor support 3 to rotate together.When conductor support 3 contacts with electric conductor 5, whole circuit ON; When conductor support 3 contacts with insulator 9, whole circuit breaker, produces 5V voltage pulse square signal thus.Wherein data acquistion system 12 can by computer and voltage signal acquisition module composition, in valve rotation process, by voltage signal acquisition module acquires circuit 5V pulse square wave signal and be transferred to computer, computer with time t for transverse axis, show for longitudinal axis graphing with this pulse square wave signal voltage, in the unit of account time, the quantity of pulse square wave can obtain the rotational speed of valve.
As shown in Figure 2, described electric conductor 5 is greater than valve lift maximum value with the height of insulator 9; Conductor support 3 and valve spring 2 are not interfered.
Described electric conductor 5 and insulator 9 can be semicircular ring cylindricality (both cross sections are for semicircle).
Described electric conductor 5 and insulator 9 can also be annulus cylindricality and the circular arc cylindricality (cross section of electric conductor 5 is the circular arc that corresponding central angle is greater than 180 °, and the cross section of insulator 9 is the circular arc that corresponding central angle is less than 180 °) of opening respectively.
Utilize the present invention can gather the rotational speed of valve under different operating mode, data acquisition time controls at about 2min.By contrasting the valve rotation speed under different operating mode, the factor affecting valve rotating speed can be found out, thus solve valve eccentric wear and the over worn problem of air valve seat ring.
Claims (3)
1. a valve rotation velocity measuring device, is characterized in that comprising annulus shaped stator (10), conductor support (3); Described annulus shaped stator (10) suit is fixed on the oil sealing (4) of valve, and is isolated by insulating material between cylinder shape stator (10) and oil sealing (4); Electric conductor (5) that annulus shaped stator (10) is circular arc by cross section, that be fixed together and insulator (9) are formed, and electric conductor (5) is greater than valve lift maximum value with the height of insulator (9); One end of conductor support (3) is connected with valve stem (8), and the other end contacts with the outer peripheral surface of annulus shaped stator (10), and conductor support (3) and valve spring (2) are not interfered; Conductor support (3) and annulus shaped stator (10) form the switch in a circuit, when conductor support (3) contacts with the electric conductor (5) of annulus shaped stator (10), and circuit ON; When conductor support (3) contacts with the insulator (9) of annulus shaped stator (10), circuit breaker; Valve often revolves and turns around, and circuit ON once, exports pulsatile once square signal.
2. valve rotation velocity measuring device according to claim 1, is characterized in that described electric conductor (5) and insulator (9) are semicircular ring cylindricality.
3. valve rotation velocity measuring device according to claim 1, is characterized in that described electric conductor (5) and insulator (9) are annulus cylindricality and the circular arc cylindricality of opening respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310552238.0A CN103590904B (en) | 2013-11-09 | 2013-11-09 | A kind of valve rotation velocity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310552238.0A CN103590904B (en) | 2013-11-09 | 2013-11-09 | A kind of valve rotation velocity measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103590904A CN103590904A (en) | 2014-02-19 |
| CN103590904B true CN103590904B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310552238.0A Active CN103590904B (en) | 2013-11-09 | 2013-11-09 | A kind of valve rotation velocity measuring device |
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| CN (1) | CN103590904B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194445B (en) * | 2016-08-16 | 2019-12-13 | 上海交通大学 | Exhaust valve self-rotating mechanism for low-speed diesel engine |
| CN108344576B (en) * | 2017-01-24 | 2020-04-14 | 一汽海马汽车有限公司 | Measuring device for valve rotation condition |
| CN110244073B (en) * | 2019-06-11 | 2021-08-17 | 中国第一汽车股份有限公司 | Mechanical tappet rotation speed measuring device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10197544A (en) * | 1996-11-12 | 1998-07-31 | Daido Gakuen | Revolving speed sensing device |
| GB2460697B (en) * | 2008-06-06 | 2010-09-29 | Weston Aerospace Ltd | High temperature speed or proximity sensor |
| WO2011080056A1 (en) * | 2009-12-16 | 2011-07-07 | Arcelik Anonim Sirketi | A laundry dryer wherein belt rupture is prevented |
| CN102854332B (en) * | 2012-09-17 | 2014-05-21 | 华北电力大学 | Device and method for measuring rotational speed on basis of electrostatic sensor array and data fusion |
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| CN103590904A (en) | 2014-02-19 |
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