CN107091629A - Engine valve clearance measuring mechanism and measuring method - Google Patents
Engine valve clearance measuring mechanism and measuring method Download PDFInfo
- Publication number
- CN107091629A CN107091629A CN201610089816.5A CN201610089816A CN107091629A CN 107091629 A CN107091629 A CN 107091629A CN 201610089816 A CN201610089816 A CN 201610089816A CN 107091629 A CN107091629 A CN 107091629A
- Authority
- CN
- China
- Prior art keywords
- engine
- detection means
- contact
- valve clearance
- valve
- Prior art date
- 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.)
- Pending
Links
- 230000037250 Clearance Effects 0.000 title claims abstract description 81
- 230000035512 clearance Effects 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 claims abstract description 73
- 238000005259 measurement Methods 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 5
- 230000000875 corresponding Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 210000000078 Claw Anatomy 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
- G01B21/16—Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring distance of clearance between spaced objects
Abstract
The invention discloses a kind of engine valve clearance measuring mechanism and measuring method, the engine valve clearance measuring mechanism includes the support (1) that can be fixedly mounted on engine housing (8) and on the support (1) and can measure the detection means (2) along the displacement on the valve stem moving direction of valve, the measurement contact of the detection means (2) can be with the adjusting screw (10) installed on engine rocker (9) top contact, to detect engine valve clearance.The problem of engine valve clearance measuring mechanism that the present invention is provided can solve the problem that existing valve clearance detection mode repeatability and low reproducibility.
Description
Technical field
The present invention relates to detection field, in particular it relates to a kind of reliable engine valve clearance measuring machine
Structure and engine valve clearance measuring method.
Background technology
Engine is the mechanism that power is provided for equipment such as automobiles.The cylinder of engine is living built with piston
Plug is connected by piston pin, connecting rod with bent axle.Piston moves reciprocatingly in cylinder, is pushed away by connecting rod
Dynamic crankshaft is rotated, so as to realize engine output power.In order to suck live gas and discharge waste gas, often
Individual cylinder is required to set corresponding inlet valve and exhaust valve.
When engine works, valve will expand because of the rise of temperature.If valve and its driving member it
Between in the cold state gapless or gap it is too small, then under hot, the expanded by heating gesture of valve and its driving member
Valve-closing must be caused not tight, engine gas leakage in compression travel and working stroke be caused, so that work(
Rate declines, and is even difficult to start when serious.In order to eliminate this phenomenon, generally assembled in engine cold state
When, certain gap is left in valve and its transmission mechanism, to compensate the swell increment after valve is heated.
This gap is referred to as valve clearance.But if valve clearance is excessive, then can cause valve evening holds early to close,
Not only operating noise is big, and can cause unnet into unsaturated vapor and exhaust, when there is descent of piston, mixing
Gas overheats engine (especially at discharge manifold) still in the phenomenon that burns away, and reduces engine power,
Add fuel consumption.Therefore suitable valve clearance is particularly important to engine.
In order to ensure suitable valve clearance, generally valve clearance is measured using clearance gauge at present.
In actual measurement process, because the discrimination standard of clearance gauge is operator's " feeling there is slight resistance ", institute
Often to occur that the difference felt due to operator causes the difference of final measurement.By to clearance gauge
Detection carries out MSA (measurement System Analysis) tests, it is found that the final R＆R measured using clearance gauge is
88.32%, far above standard 30%.Therefore, valve clearance is measured using clearance gauge, there is the gas measured
The problem of door gap width repeatability and low reproducibility, its measurement result is not very reliable.
The content of the invention
It is an object of the invention to provide a kind of engine valve clearance measuring mechanism, existing valve can solve the problem that
The problem of gap detection mode repeatability and low reproducibility.
To achieve these goals, the present invention provides a kind of engine valve clearance measuring mechanism, the hair
Motivation valve clearance measuring mechanism includes the support that can be fixedly mounted on engine housing and is arranged on
On the support and the detection means along the displacement on the valve stem moving direction of valve can be measured, it is described
The measurement contact of detection means can be with the adjusting screw installed on engine rocker top contact, with examine
Survey engine valve clearance.
Preferably, the detection means is amesdial, dial gauge or displacement transducer.
Preferably, be fixedly connected with extension bar on the contact of the detection means, the extension bar parallel to
The lower end of the valve stem and extension bar can be with the adjusting screw top contact.
Preferably, the lower end of the extension bar is fixed with contact block, and the lower surface of the contact block is plane
And the area of the lower surface of contact block is more than the cross-sectional area of the extension bar, so that the adjusting screw exists
It can be contacted all the time with the contact block during moving up and down.
Preferably, the detection means is installed on the bracket by sleeve pipe, and described sleeve pipe is arranged on institute
State on support and parallel to the valve stem, the detection means is arranged in described sleeve pipe, described to lengthen
Bar passes through described sleeve pipe, has gap between the outer circumference surface and described sleeve pipe inwall of the extension bar.
Preferably, the upper end of described sleeve pipe is provided with the fixture for fixing the detection means.
Preferably, it is installed with slide rail, the slide rail that be provided with can be along described on the support
The sliding block that slide rail is slided in the plane vertical with the valve stem, the detection means is arranged on the cunning
On block.
The difference of the present invention and prior art is that the engine valve clearance that the present invention is provided is measured
Mechanism is possible to measurement by support and fixed along the detection means of the displacement of the valve stem moving direction of valve,
And the measurement contact of the detection means can be with adjusting screw top contact, when operating personnel are manual
It during waggle engine rocker, can move back and forth the adjusting screw being arranged on engine rocker,
So as to measure adjusting screw along the displacement maximum on valve stem moving direction by detection means,
Because the gap between the lower end of adjusting screw and the top of valve stem is valve clearance, therefore by surveying
Measure the moveable maximum of adjusting screw, you can obtain valve clearance value.Between the engine valve of the present invention
Gap measuring mechanism can accurately measure valve clearance by detection means, and clearance gauge is used relative to prior art
Fill between the lower end of adjusting screw and the top of valve stem and measure the mode of valve clearance, can effectively solve
The problem of certainly existing valve clearance detection mode repeatability and low reproducibility.By starting to the present invention
Machine valve clearance measuring mechanism carries out MSA detections, and its R＆R value is relatively low, and measurement result is stable and credible.
It is a further object to provide a kind of engine valve clearance measuring method, can accurately it survey
Engine valve clearance is measured, existing valve clearance detection mode repeatability is solved and reproducibility is low asks
Topic.
In order to achieve the above object, the technical proposal of the invention is realized in this way：
A kind of engine valve clearance measuring method, wherein, comprise the following steps：
Step A, is closed the valve that needs are measured, and fixation can measure the detection dress of displacement
Put；
Step B, shakes engine rocker corresponding with the valve, makes to install on the engine rocker
Adjusting screw move back and forth up and down, the adjusting screw is measured along the valve by the detection means
Valve stem moving direction displacement maximum so that obtain need measure valve clearance.
Preferably, in step, measurement contact and the top of the adjusting screw of the detection means are made
Portion is contacted, or the measurement contact of the detection means is passed through extension bar and the top of the adjusting screw
Contact.
Preferably, the lower end of the extension bar is fixed with contact block, and the lower surface of the contact block is plane
And the area of the lower surface of contact block is more than the cross-sectional area of the extension bar, the lower surface of the contact block
With the top contact of the adjusting screw.
Described engine valve clearance measuring method and above-mentioned engine valve clearance measuring mechanism phase
Have the advantage that essentially identical, will not be repeated here for prior art.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with
Following embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is a kind of local knot of the embodiment for the engine valve clearance measuring mechanism that the present invention is provided
Structure schematic diagram；
Fig. 2 is Fig. 1 right view；
Fig. 3 is that a kind of structure of the embodiment for the engine valve clearance measuring mechanism that the present invention is provided is shown
It is intended to；
Fig. 4 is Fig. 3 right view；
Fig. 5 is the top view for the adjusting screw installed on engine rocker；
Description of reference numerals
The detection means of 1 support 2
The contact block of 3 extension bar 4
The slide rail of 5 sleeve pipe 6
The engine housing of 7 sliding block 8
The adjusting screw of 9 engine rocker 10
The chamfering of edge 12 of 11 adjusting screws
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Embodiment described herein is merely to illustrate and explain the present invention, and is not limited to this hair
It is bright.
In the present invention, in the case where not making opposite explanation, the noun of locality used leads to as " upper and lower "
Refer to what the engine valve clearance measuring mechanism of the invention provided was defined under normal usage, and
And it is consistent with the above-below direction shown in accompanying drawing 1.
These above-mentioned nouns of locality are used for the ease of understanding the present invention, thus should not be constituted to this hair
The limitation of bright protection domain.
Firstly the need of explanation, basic fundamental of the invention is contemplated that by setting detection means 2, and
Make the measurement contact of detection means 2 directly or indirectly with the adjusting screw 10 on engine rocker 9
Top contact, by shaking engine rocker 9 so that adjusting screw 10 is moved back and forth, so as to pass through inspection
Survey device 2 measures the maximum displacement along the adjusting screw 10 on the valve stem moving direction of valve, i.e.,
Valve clearance.In this range of the technology design, the protection model of inventive engine valve clearance measuring mechanism
Enclose and be not limited to specific detail structure shown in Fig. 1-Fig. 4, for example, the shape of support 1
It can be adjusted according to the situation of different engines.These are retouched embodiment below
In stating, incidentally give schematic illustration.
According to an aspect of the present invention, suitably referring to shown in Fig. 1, Fig. 2, in order to realize the present invention's
Above-mentioned technical purpose, the engine valve clearance measuring mechanism of basic embodiment of the present invention can include energy
The support 1 that is enough fixedly mounted on engine housing 8 and on the support 1 and it can measure edge
The detection means 2 of the displacement on the valve stem moving direction of valve, the measurement of the detection means 2 is touched
Head can be with the adjusting screw 10 installed on engine rocker 9 top contact, to detect engine air
Door gap.
The engine valve clearance measuring mechanism that present embodiment is provided first can consolidate support 1 when in use
Be scheduled on engine housing 8, and enable detection means 2 measurement contact measure along need measurement
Valve valve stem the displacement moved back and forth on direction, while the measurement contact of detection means 2 with hair
The top contact for the adjusting screw 10 installed on motivation rocking arm 9, the then manual waggle of operating personnel
Engine rocker 9 so that the adjusting screw 10 on engine rocker 9 is moved up and down, so that detection means
2, which can measure maximum displacement value of the adjusting screw 10 along valve stem moving direction, the i.e. needs, measures
Valve clearance value.
Wherein, in order that obtaining the measurement contact of detection means 2 can measure along on valve stem moving direction
Displacement, it is necessary to set setting angle of the detection means 2 on support 1.In view of the installation of support 1
Fastness and stability, as shown in Figure 3, Figure 4, can be bolted on engine by support 1
On casing 8, wherein the bolt can be fastened in the bolt hole on engine housing 8, and the threaded hole can
Thinking is used for the bolt hole of stationary engine box cover on engine housing 8.The shape of support 1 according to
The parts of arrangement are determined in engine case body, not to be defined with the interference of these parts.Due to valve stem
The top surface for moving back and forth direction and engine housing 8 between have specific angle, therefore, it can make
Support 1 parallel to the engine housing 8 top surface, so as to the moving direction and hair of root valve stem
Angle between the top surface of motivation casing 8 determines setting angle of the detection means 2 on support 1, for example
Top surface of the measurement bar of detection means 2 perpendicular to engine housing 8.
Heretofore described detection means 2 can detect any inspection of linearly top offset
Mechanism is surveyed, for example, the detection means 2 can be amesdial, dial gauge or displacement transducer.When
During using amesdial or dial gauge, engine valve clearance measuring mechanism of the invention can pass through thousand points
Reading on table or dial gauge directly obtains valve clearance value, for convenience reading, can select electronics
Amesdial or electronic centigrade scale；, it is necessary to using controlling display device by position when using displacement transducer
The signal that displacement sensor is measured is converted to numeral to obtain valve clearance value.
Because parts are numerous, complicated in engine housing 8, for some adjusting screws, institute is in place
The space relatively narrower put and cause the measurement contact of detection means 2 to be difficult to the situation or detection means entered
2 measurement bar is shorter and when being difficult to contact adjusting screw 10, in an embodiment of the invention, institute
Extension bar 3, gas of the extension bar 3 parallel to valve are fixedly connected with the contact for stating detection means 2
The lower end of door rod and extension bar 3 can be with the adjusting screw 10 top contact, so as to measure
To the valve clearance for needing to measure.Wherein the upper end of extension bar 3 can pass through screw thread and detection means 2
Contact is connected, or is connected to extension bar 3 on the contact of detection means 2 by fastener.
With reference to shown in Fig. 5, because the termination of some adjusting screws 10 uses the structure of interior hexagonal, i.e., should
The top of adjusting screw 10 has the groove of a positive six prismsby shape so that the top tool of adjusting screw 10
There is narrower edge 11.And one end of engine rocker 9 is connected with valve stem, the other end and valve
Bar top contact, middle part are hinged on casing, when valve stem moves up and down under the driving of cam shaft
When, valve stem drives pin joint of the engine rocker 9 in the middle part of it to swing up and down, so that hair
Motivation rocking arm 9 promotes valve stem to open valve or close valve, therefore engine rocker 9 is provided with
The mobile route of the end of adjusting screw 10 is the arc centered on the pin joint of engine rocker 9.
Therefore, if detection means 2 measurement contact area or extension bar 3 lower end area it is smaller when,
When being likely to appear in operating personnel's shake engine rocker 9, the edge 11 at the top of adjusting screw 10 exists
The situation insufficient with measurement contact in the range of its movement locus.Particularly when adjusting screw 10
Top has a chamfering 12, and measured when adjusting screw 10 is moved the lower end of contact or extension bar 3 with
When chamfered part is contacted, the valve clearance that detection means 2 is measured can be caused to exist with actual valve clearance
Relatively large deviation.For such case, in a preferred embodiment of the present invention, the detection means
Extension bar 3 is fixed with 2 measurement contact, the lower end of the extension bar 3 is fixed with contact block 4, described
The lower surface of contact block 4 is horizontal stroke of the area more than the extension bar 3 of plane and the lower surface of contact block 4
The area in section (perpendicular to the section of the length direction of extension bar 3), so that the adjusting screw 10 exists
It can be contacted all the time with the contact block 4 during moving up and down, so as to ensure the accuracy of measurement.
In the present embodiment, the contact block 4 can be implemented with the formation integrative-structure of extension bar 3 at other
In mode, it can be connected between the contact block 4 and extension bar 3 by screw thread or welding manner.
For the ease of assembling detection means 2, in an embodiment of the invention, the detection means
2 can be arranged on the support 1 by sleeve pipe 5.Described sleeve pipe 5 can pacify for example, by screwed hole
On the support 1 and parallel to the valve stem of valve, the detection means 2 is arranged on described sleeve pipe
On 5, the extension bar 3 passes through described sleeve pipe 5, outer circumference surface and the described sleeve pipe 5 of the extension bar 3
There is gap between inwall.Further, the upper end of described sleeve pipe 5 is provided with for fixing the detection
The fixture of device 2.Fixture can use existing various fixed structures, such as claw.
Further, in order to easily being examined to the valve clearance of all valves on engine
Survey, in a preferred embodiment of the invention, slide rail 6, the cunning are installed with the support 1
The cunning that can be slided along the slide rail 6 in the plane vertical with the valve stem of valve is installed on rail 6
Block 7, the detection means 2 is arranged on the sliding block 7.As described above, as the mobile side of valve stem
In the case of the top surface perpendicular to engine housing 8, in mounting bracket 1 so that support 1 is parallel
In the top surface of engine housing 8, you can to realize slide rail 6 in the plane perpendicular to valve stem, so that
Sliding block 7 is slided in the plane.By installing slide rail 6 on support 1, on slide rail 6
Sliding block 7 is installed, and detection means 2 or sleeve pipe 5 are arranged on sliding block 7, can be easily to hair
Detected the valve clearance of each valve of motivation.Wherein the shape of slide rail 6 can dividing according to valve
The determination of cloth shape, for example, when all valves of engine are distributed on the same line, the shape of slide rail 6
Shape is linear.
When sliding block 7 is moved to the top for the valve for needing to detect with detection means 2, in order to avoid cunning
Block 7 is moved when detecting the valve clearance, it is preferable that the slide rail 6 can select have locking
The slide rail of function, either installation locking device or the installation on support 1 on slide rail 6 or sliding block 7
Locking device.
Below by detection means 2 using exemplified by amesdial, to the engine valve clearance measuring machine of the present invention
The application method of structure is illustrated：
Support 1 is integrally placed on engine housing 8 first, then support 1 is fixed on by bolt
On engine housing 8；Amesdial (such as electronic dial gauge) is arranged on sliding block 7 again, it is mobile to slide
Block 7 is to the top for the valve for needing to measure, and adjustment amesdial height to suitable position (can be by solid
Determine the claw adjustment of amesdial or the position of adjustment sleeve), then sliding block 7 is locked on slide rail 6；
Again by the manual waggle engine rocker 9 of operator, the maximum shown on amesdial is current
Valve clearance is worth.
It is right after being measured by using the engine valve clearance measuring mechanism of the present invention a valve clearance
This time measurement result carries out MSA tests, and it is 15.75% to draw final R＆R, less than standard 30%,
Much smaller than the measurement result 88.32% using clearance gauge.Therefore, it can thus be appreciated that the engine that the present invention is provided
Valve clearance measuring mechanism can solve the problem that existing valve clearance detection mode repeatability and reproducibility are low
Problem, measurement result is reliable and stable.
According to another aspect of the present invention, a kind of engine valve for the basic embodiment that the present invention is provided
Gap measuring method, comprises the following steps：
Step A, is closed the valve that needs are measured, and fixation can measure the detection dress of displacement
Put 2；
Step B, shakes engine rocker 9 corresponding with the valve, makes on the engine rocker 9
The adjusting screw 10 of installation is moved back and forth up and down, and the adjusting screw is measured by the detection means 2
10 along the displacement maximum on the valve stem moving direction of the valve, so as to obtain the valve for needing to measure
Gap.
Pass through the above method, it is possible to achieve the accurately and stably measurement of valve clearance.For example, should to using
The above-mentioned engine valve clearance testing agency of engine valve clearance detection method carries out MSA tests,
Its test structure has turned out this point.Certainly, although with above-mentioned engine valve in present embodiment
The measurement result of the present invention is illustrated exemplified by testing agency, but it is not limited to the present invention
Engine valve clearance measuring method.For example, in other embodiments, can be by detection means 2
Be directly anchored on engine housing 8 or relative to engine housing 8 it is fixed on the basis of.
Further, in step, the measurement contact of the detection means 2 and the adjustment can be made
The top contact of screw 10, or as described in the embodiment, make the measurement of the detection means 2
Contact is by extension bar 3 and the top contact of the adjusting screw 10, to adapt to different operating modes.
Likewise, when the relative contact product between adjusting screw 10 and extension bar 3 is smaller, it is described
The lower end of extension bar 3 can be fixed with contact block 4, and the lower surface of the contact block 4 is plane and contact
The area of the lower surface of block 4 is more than the cross-sectional area of the extension bar 3, the lower surface of the contact block 4
With the top contact of the adjusting screw 10.
In the present invention, engine rocker 9 can also be driven to swing by drive devices such as small cylinders,
Further to heighten the engine valve clearance measuring mechanism of the present invention and the measurement reproducibility of measuring method
And repeatability.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited
Detail in above-mentioned embodiment, can be to the present invention in the range of the technology design of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid necessity
Repetition, the present invention various possible combinations are no longer separately illustrated.
In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of engine valve clearance measuring mechanism, it is characterised in that the engine valve clearance
Measuring mechanism includes the support (1) that can be fixedly mounted on engine housing (8) and installed in described
On support (1) and it can measure the detection means (2) along the displacement on the valve stem moving direction of valve,
The measurement contact of the detection means (2) can be with the adjusting screw (10) installed on engine rocker (9)
Top contact, to detect engine valve clearance.
2. engine valve clearance measuring mechanism according to claim 1, it is characterised in that institute
Detection means (2) is stated for amesdial, dial gauge or displacement transducer.
3. engine valve clearance measuring mechanism according to claim 1 or 2, it is characterised in that
Extension bar (3) is fixedly connected with the contact of the detection means (2), the extension bar (3) is parallel
Top contact that can be with the adjusting screw (10) in the lower end of the valve stem and extension bar (3).
4. engine valve clearance measuring mechanism according to claim 3, it is characterised in that institute
The lower end for stating extension bar (3) is fixed with contact block (4), and the lower surface of the contact block (4) is plane
And the area of the lower surface of contact block (4) is more than the cross-sectional area of the extension bar (3), so that described
Adjusting screw (10) can be contacted with the contact block (4) all the time during moving up and down.
5. engine valve clearance measuring mechanism according to claim 3, it is characterised in that institute
State detection means (2) to be arranged on the support (1) by sleeve pipe (5), described sleeve pipe (5) peace
On the support (1) and parallel to the valve stem, the detection means (2) is arranged on described
On sleeve pipe (5), the extension bar (3) is passed through outside described sleeve pipe (5), the extension bar (3)
There is gap between periphery and described sleeve pipe (5) inwall.
6. engine valve clearance measuring mechanism according to claim 5, it is characterised in that institute
The upper end for stating sleeve pipe (5) is provided with the fixture for being used for fixing the detection means (2).
7. engine valve clearance measuring mechanism according to claim 1, it is characterised in that institute
State and slide rail (6) is installed with support (1), being provided with the slide rail (6) can be along described
The sliding block (7) that slide rail (6) is slided in the plane vertical with the valve stem, the detection means (2)
On the sliding block (7).
8. a kind of motivation valve clearance measuring method, it is characterised in that comprise the following steps：
Step A, is closed the valve that needs are measured, and fixation can measure the detection dress of displacement
Put (2)；
Step B, shakes engine rocker (9) corresponding with the valve, makes the engine rocker (9)
The adjusting screw (10) of upper installation is moved back and forth up and down, and measures described by the detection means (2)
Displacement maximum on valve stem moving direction of the adjusting screw (10) along the valve, so as to be needed
The valve clearance to be measured.
9. engine valve clearance measuring method according to claim 8, it is characterised in that
In step A, make the measurement contact of the detection means (2) and the top of the adjusting screw (10)
Contact,
Or the measurement contact of the detection means (2) is passed through extension bar (3) and the adjusting screw
(10) top contact.
10. engine valve clearance measuring method according to claim 9, it is characterised in that institute
The lower end for stating extension bar (3) is fixed with contact block (4), and the lower surface of the contact block (4) is plane
And the area of the lower surface of contact block (4) is more than the cross-sectional area of the extension bar (3), the contact
The lower surface of block (4) and the top contact of the adjusting screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089816.5A CN107091629A (en) | 2016-02-17 | 2016-02-17 | Engine valve clearance measuring mechanism and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089816.5A CN107091629A (en) | 2016-02-17 | 2016-02-17 | Engine valve clearance measuring mechanism and measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091629A true CN107091629A (en) | 2017-08-25 |
Family
ID=59648741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610089816.5A Pending CN107091629A (en) | 2016-02-17 | 2016-02-17 | Engine valve clearance measuring mechanism and measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091629A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727040A (en) * | 2017-09-04 | 2018-02-23 | 潍柴动力股份有限公司 | The measuring method and device of a kind of valve clearance |
| CN108759629A (en) * | 2018-05-25 | 2018-11-06 | 胡学静 | Engine valve clearance Quick measurement tool and application method |
| CN110118521A (en) * | 2018-12-13 | 2019-08-13 | 华中科技大学 | Valve clearance rule measuring device and method under engine real machine working condition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202002627U (en) * | 2010-12-31 | 2011-10-05 | 潍柴动力股份有限公司 | Measuring device of engine valve lift |
| CN102538628A (en) * | 2011-12-18 | 2012-07-04 | 奇瑞汽车股份有限公司 | Valve lift measuring device |
| CN204421807U (en) * | 2015-02-12 | 2015-06-24 | 中国重汽集团济南动力有限公司 | A kind of measuring device of engine valve lift |
| CN205333043U (en) * | 2016-02-17 | 2016-06-22 | 北京福田康明斯发动机有限公司 | Engine valve clearance measuring mechanism |
-
2016
- 2016-02-17 CN CN201610089816.5A patent/CN107091629A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202002627U (en) * | 2010-12-31 | 2011-10-05 | 潍柴动力股份有限公司 | Measuring device of engine valve lift |
| CN102538628A (en) * | 2011-12-18 | 2012-07-04 | 奇瑞汽车股份有限公司 | Valve lift measuring device |
| CN204421807U (en) * | 2015-02-12 | 2015-06-24 | 中国重汽集团济南动力有限公司 | A kind of measuring device of engine valve lift |
| CN205333043U (en) * | 2016-02-17 | 2016-06-22 | 北京福田康明斯发动机有限公司 | Engine valve clearance measuring mechanism |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727040A (en) * | 2017-09-04 | 2018-02-23 | 潍柴动力股份有限公司 | The measuring method and device of a kind of valve clearance |
| CN107727040B (en) * | 2017-09-04 | 2019-08-27 | 潍柴动力股份有限公司 | A kind of measurement method and device of valve clearance |
| CN108759629A (en) * | 2018-05-25 | 2018-11-06 | 胡学静 | Engine valve clearance Quick measurement tool and application method |
| CN108759629B (en) * | 2018-05-25 | 2020-10-23 | 永康市小菜丫厨具有限公司 | Engine valve clearance rapid measuring tool and using method |
| CN110118521A (en) * | 2018-12-13 | 2019-08-13 | 华中科技大学 | Valve clearance rule measuring device and method under engine real machine working condition |
| CN110118521B (en) * | 2018-12-13 | 2020-10-16 | 华中科技大学 | Valve clearance rule measuring device and method in real engine working state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107091629A (en) | Engine valve clearance measuring mechanism and measuring method | |
| CN205333043U (en) | Engine valve clearance measuring mechanism | |
| Kar et al. | Instantaneous exhaust temperature measurements using thermocouple compensation techniques | |
| US6810722B2 (en) | Method and device for determining and adjusting the upper dead-center position in piston engines | |
| KR102061992B1 (en) | How to determine injection start time and injection volume of fuel during normal operation of internal combustion engine | |
| US20150300278A1 (en) | Using ion current signal for engine performance and emissions measuring techniques and method for doing the same | |
| Luján et al. | Estimation of trapped mass by in-cylinder pressure resonance in HCCI engines | |
| Amirante et al. | Towards the development of the in-cylinder pressure measurement based on the strain gauge technique for internal combustion engines | |
| CN105863841A (en) | Method for conducting angle encoding on instantaneous pressure in engine cylinder | |
| Polonowski et al. | Accelerometer based sensing of combustion in a high speed HPCR diesel engine | |
| Finesso et al. | A control-oriented approach to estimate the injected fuel mass on the basis of the measured in-cylinder pressure in multiple injection diesel engines | |
| US20100126259A1 (en) | Methods and Apparatus for Analyzing Internal Combustion Engines | |
| US3820386A (en) | Method and apparatus for determining top dead center in internal combustion engines | |
| EP3561475A1 (en) | Combustion analysis apparatus for large-sized low-speed engine and method for determining combustion state of engine using the same | |
| CN108332959A (en) | A kind of high/low temperature sealing test experimental bench | |
| Desantes et al. | Experiments on the influence of intake conditions on local instantaneous heat flux in reciprocating internal combustion engines | |
| CN202836449U (en) | Device for measuring wall thickness difference of piston pin | |
| KR20150070878A (en) | Valve clearance measurement apparatus for engine | |
| RU2484440C1 (en) | Diagnostics method of gas distributing mechanism of internal combustion engine, and device for method's implementation | |
| RU2550235C2 (en) | Diagnostic device of gas distributing mechanism of internal combustion engine | |
| BR202015005945U2 (en) | stationary engine nozzle and pump testing equipment | |
| KR20040047118A (en) | Apparatus for measuring compression ratio of cylinder in engine and method of the same | |
| JP6512078B2 (en) | Injection control device and injection control system | |
| CN109373852A (en) | It is a kind of to measure the device of reciprocating compressor piston stroke, method and its application | |
| KR20160024469A (en) | Inspection tools for Piston Top Dead Point of Engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170825 |