CN102980458A - Engine valve seal belt jumping detecting device and detecting method thereof - Google Patents
Engine valve seal belt jumping detecting device and detecting method thereof Download PDFInfo
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- CN102980458A CN102980458A CN2012104573107A CN201210457310A CN102980458A CN 102980458 A CN102980458 A CN 102980458A CN 2012104573107 A CN2012104573107 A CN 2012104573107A CN 201210457310 A CN201210457310 A CN 201210457310A CN 102980458 A CN102980458 A CN 102980458A
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Abstract
The invention discloses an engine valve seal belt jumping detecting device and a detecting method thereof. The detecting device comprises a base plate, a V-shaped block and a support rod. The base plate is provided with an inclined plane, and the included angle between the inclined plane and the base plane of the base plate is equal to the conical-surface angle of a valve seal belt. The V-shaped block is arranged on the inclined plane of the base plate, and is provided with a V-shaped groove. A valve is placed inside the V-shaped groove in a state of being inclined and paralleled to the inclined plane of the base plate. The support rod is vertically installed on the base plate. A dial indicator is horizontally installed on the support rod. In the process of detection, the contact head of the dial indicator abuts against the valve seal belt. Compared with the prior art, the detecting device is simple in structure, convenient to operate, small in detection error, simple in detecting method and steps, high in detection efficiency and convenient to use, and moreover, staff detecting the products can mount guard to operate with no training.
Description
Technical field
The present invention relates to a kind of engine valve band jitter detection apparatus and detection method thereof.
Background technology
Automotive engine valves is the ingredient of firing chamber, is again the passage of gas turnover firing chamber, will bear at work washing away and corrosive attack of great alternation and shock load and high temperature, high-speed fuel gas, and operating mode is very harsh.The quality of valve processing is not only relevant with the technical economical index of engine, and is also closely related with the serviceable life of the reliability of complete machine and valve.
In gasoline engine, the inlet valve temperature is 300～500 ℃, the exhaust valve temperature is 600～800 ℃, even higher, when especially exhaust valve had just been opened, inner pressure of air cylinder was higher, and valve opening is also little, high-temperature combustion gas is discharged through the gentle crack between a door and its frame of valve seating crack with very high speed (can reach 600m/s), valve is heated consumingly and corrodes.
Can see that thus the temperature of face center, the exhaust valve crown, the back side and bar section intersection is the highest, the latter be since high speed exhaust wash away and cause.Nearly 76% falls apart through valve seating in the valve institute received heat, and all the other 24% pass away through engine valve stem and conduit.From valve cooling angle, must keep the conical surface Contact of valve and valve seating well also to keep sealing, otherwise the conical surface will become generating surface by heat dissipation channel.
Valve has friction between valve stem and the valve guide bushing during with very high frequency opening and closing.Valve will bear the quiescent load that take a seat shock load and gaseous-pressure give in when work, and this quiescent load generally is about 0.5MPa, and impact load generally is about 1.2MPa.
In the cooperation of valve group, valve and valve seating close the face width degree and are about 1.5 ~ 3.0mm, and the cone angle of valve retainer should be than the valve sealing conical surface bigger 0. 5 ° ~ 1 °, this can form a narrower seat and close the face band, improve seating force, restriction carbon film thickness can improve the heat conduction.Thereby the sealing effectiveness that guarantees the valve sealing band is the key factor that affects the valve clearance, if the valve clearance is excessive, can make the valve maximum opening and open minimizing perdurability, affect air inflow, simultaneously also increased the weight of to clash between the transmission device, make each part accelerated wear test reduce serviceable life, increased the noise of valve actuating mechanism.
Because the automobile engine cylinder head valve sealing band conical surface has 30 ° and 45 ° two kinds, because the restriction of testing conditions, this angle is done very difficult in testing process, be unfavorable for detecting, and traditional detection method detection error ratio is larger, make actual valve and valve seating workplace poorly sealed, also can cause following consequence:
1) engine power descends.In the compression forming process, inlet and outlet Men Douying closes fully, only in this way just can make the gas in the cylinder reach maximum pressure when compressed.If valve and valve seating are poorly sealed, can cause in the compression travel process, some combustion mixtures ooze out from inlet valve or exhaust valve, and then cause in the at the end top pressure reduction of combustion mixture of compression travel, cause gas work of expansion when burning to reduce, the power of engine is reduced.
2) engine consumption increases.In the compression travel process, if IC Intake Valve Closes is not tight, some combustion mixtures can infiltrate draft tube or air cleaner through inlet valve from cylinder.If exhaust valve closing is not tight, in the compression travel process, some combustion mixtures can enter sound suppressor through exhaust valve from cylinder.Because this part combination gas just enters in the atmosphere without working stroke, thereby causes waste of fuel, cause fuel consumption to increase.In the working stroke process, if IC Intake Valve Closes is not tight, can cause some combustion mixtures to enter draft tube or carburetor throat while burning through inlet valve, cause blow back.Sometimes we find to have the burning impression in trunnion when cleaning carburetor, and this is just due to the above-mentioned reason.In the working stroke process, if exhaust valve closing is not tight, can cause combustion mixture to enter sound suppressor while burning through exhaust valve.This part the combustion mixture part that enters in the sound suppressor is burnt in sound suppressor, and a part just enters in the atmosphere through the sound suppressor vent port without burning.The reason of part automotive muffler vent port oil dripping phenomenon that Here it is.Because this part combustion mixture do not pass through working stroke, thus can cause that engine fuel consumption is large, waste fuel, contaminated environment, and noise is arranged in sound suppressor.
3) the inlet and outlet door is not closed completely, and can cause combustion mixture erosion valve and the valve seating workplace of high temperature, high pressure, makes valve and valve seating workplace pit, ablation occur.The combination gas of incomplete combustion also can make valve and valve seating workplace carbon deposit occur, ablation, pit, and carbon deposit can accelerate again the inlet and outlet door and be not closed completely, and forms vicious cycle, causes engine power performance, economy to descend.
In sum, the testing that the testing tool that designs a kind of special use carries out the valve sealing surface jitter just seems particularly important.
Summary of the invention
Technical matters to be solved by this invention provides a kind of error engine valve jitter detection apparatus little and easy and simple to handle that detects.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of engine valve band jitter detection apparatus, it comprises base plate, vee-block and support bar, has a dip plane on the base plate, angle between the baseplane of this dip plane and base plate equates with the conical surface angle of described valve sealing band, vee-block is located on the dip plane of base plate, vee-block is provided with V-shaped groove, valve is placed in the V-shaped groove with the state that tilts and parallel with the dip plane of base plate, support bar vertically is installed on the base plate, be horizontally installed with clock gauge at support bar, when detecting, the contact of clock gauge withstands the valve sealing band.
Be provided with the baffle plate of the notch of a V-shaped groove that blocks described vee-block in the dip plane of described base plate, along inclined direction, baffle plate is positioned at the below of vee-block, on the baffle plate towards V-shaped groove face be provided with steel ball, when detecting, the end face of the valve stem of described valve is against on this steel ball.
The position of described steel ball is over against the V-shaped groove of described vee-block.
Along having groove with the perpendicular direction of described V-shaped groove, at the groove location place, the valve stem of described valve exposes from V-shaped groove on the end face of described vee-block.
The longitudinal section of described base plate be shaped as triangle.
The present invention also provides a kind of detection method of engine valve band jitter detection apparatus, and the step that this detection method adopts is as follows,
At first base plate is placed on the surface level with its baseplane, then valve to be detected is placed in the V-shaped groove of vee-block, and adjust the position of valve, make the end face of valve stem withstand steel ball on the baffle plate, make the contact of clock gauge withstand the valve sealing band; Stir valve stem in the last groove on vee-block, valve is rotated; In the valve rotation process, if there is runout error valve sealing band position, clock gauge just can show immediately.
The present invention adopts technique scheme, compared with prior art, the vee-block of the placement valve of this pick-up unit is located on the dip plane of base plate, when detecting, valve is placed on a given bevel height and position like this, and limit valve by the V-shaped groove on the vee-block and can only rotate and can not move around its axle center, and the angle between the dip plane on the base plate and the surface level and valve sealing band conical surface angle to be detected are consistent, so just so that the position that will detect on the valve presents plumbness, made things convenient for the detection of valve, and can also effectively control the appearance that detects error, the detection error is little, only need during detection clock gauge contact and valve sealing band are kept in touch, in the situation that valve rotates around its axle center, observe the demonstration of clock gauge only, if there is overproof band jerk value just can find out at once, clock gauge just can detect rapidly; This structure of the detecting device is simple, and is easy to operate, and the detection method step is simple, and the employee who detects this product need not especially training and gets final product operation on duty, and detection efficiency is high, easy to use.
Description of drawings
Fig. 1 is the structural representation of pick-up unit of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Mark among the above-mentioned figure is: 1, base plate; 2, vee-block; 3, web joint; 4, socket head cap screw; 5, nut; 6, steel ball; 7, baffle plate; 8, support bar; 9, clock gauge; 10, valve; 11, groove.
Embodiment
Be a kind of engine valve band jitter detection apparatus of the present invention as depicted in figs. 1 and 2, it comprises base plate 1, vee-block 2 and support bar 8, has a dip plane on the base plate 1, angle between the baseplane of this dip plane and base plate 1 equates with the conical surface angle of described valve sealing band, vee-block 2 is located on the dip plane of base plate 1, vee-block 2 is provided with V-shaped groove, valve 10 is placed in the V-shaped groove with the state that tilts and parallel with the dip plane of base plate 1, support bar 8 vertically is installed on the base plate 1, be horizontally installed with clock gauge 9 at support bar 8, when detecting, the contact of clock gauge 9 withstands the valve sealing band.Compared with prior art, the vee-block 2 of the placement valve 10 of this pick-up unit is located on the dip plane of base plate 1, when detecting, valve 10 is placed on a given bevel height and position like this, and limit valve 10 by the V-shaped groove on the vee-block 2 and can only rotate and can not move around its axle center, and the angle between the dip plane on the base plate 1 and the surface level and valve sealing band conical surface angle to be detected are consistent, so just so that the position that will detect on the valve 10 presents plumbness, made things convenient for the detection of valve 10, and can also effectively control the appearance that detects error, the detection error is little, only need during detection clock gauge 9 contacts and valve sealing band are kept in touch, in the situation that valve 10 rotates around its axle center, observe the demonstration of clock gauge 9 only, if there is overproof band jerk value just can find out at once, clock gauge 9 just can detect rapidly;
As depicted in figs. 1 and 2, on the dip plane of base plate 1, can also be provided with the baffle plate 7 of the notch of a V-shaped groove that blocks vee- block 2,7 pairs of valves of baffle plate 10 carry out spacing, along inclined direction, baffle plate 7 is positioned at the below of vee-block 2, on the baffle plate 7 towards V-shaped groove face be provided with steel ball 6, the position of steel ball 6 is over against the V-shaped groove of vee-block 2.When detecting, the end face of the valve stem of valve 10 is against on this steel ball 6, and steel ball 6 contacts for the some face with the valve stem end face, and valve 10 bearing accuracies are high, further reduce to detect error.
As depicted in figs. 1 and 2, along having groove 11 with the perpendicular direction of V-shaped groove, the size of groove 11 will make finger put on the end face of vee-block 2, and in groove 11 positions, the valve stem of valve 10 exposes from V-shaped groove, is convenient to stirring of finger.
As depicted in figs. 1 and 2, below base plate 1, fix the support bars 8 that vertically arrange with socket head cap screw 4 and nut 5, a web joint 3 is fixed with socket head cap screw 4 in position concordant with valve sealing band horizontal level on support bar 8, and clock gauge 9 is that level is installed on this web joint 3.
As shown in Figure 1, the longitudinal section of base plate 1 be shaped as triangle, base plate 1 has baseplane and dip plane.Certainly base plate 1 also can be other shape.
The step that the detection method of this engine valve band jitter detection apparatus adopts is as follows:
At first base plate 1 is placed on the surface level with its baseplane, then valve to be detected 10 is placed in the V-shaped groove of vee-block 2, and adjust the position of valve 10, make the end face of valve stem withstand steel ball 6 on the baffle plate 7, make the contact of clock gauge 9 withstand the valve sealing band; Stir valve stem in the last groove 11 on vee-block 2, valve 10 is rotated; In valve 10 rotation processes, if there is runout error valve sealing band position, clock gauge 9 just can show immediately.
This structure of the detecting device is simple, and is easy to operate, and the detection method step is simple, and the employee who detects this product need not especially training and gets final product operation on duty, and detection efficiency is high, easy to use.
The above has carried out exemplary description to the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (6)
1. engine valve band jitter detection apparatus, it is characterized in that: comprise base plate (1), vee-block (2) and support bar (8), base plate has a dip plane on (1), angle between the baseplane of this dip plane and base plate (1) equates with the conical surface angle of described valve sealing band, vee-block (2) is located on the dip plane of base plate (1), vee-block (2) is provided with V-shaped groove, valve (10) is placed in the V-shaped groove with the state that tilts and parallel with the dip plane of base plate (1), support bar (8) vertically is installed on the base plate (1), be horizontally installed with clock gauge (9) at support bar (8), when detecting, the contact of clock gauge (9) withstands the valve sealing band.
2. engine valve band jitter detection apparatus according to claim 1, it is characterized in that: the baffle plate (7) that is provided with the notch of a V-shaped groove that blocks described vee-block (2) in the dip plane of described base plate (1), along inclined direction, baffle plate (7) is positioned at the below of vee-block (2), on the baffle plate (7) towards V-shaped groove face be provided with steel ball (6), when detecting, the end face of the valve stem of described valve (10) is against on this steel ball (6).
3. engine valve band jitter detection apparatus according to claim 2, it is characterized in that: the position of described steel ball (6) is over against the V-shaped groove of described vee-block (2).
4. engine valve band jitter detection apparatus according to claim 1, it is characterized in that: on the end face of described vee-block (2) along having groove (11) with the perpendicular direction of described V-shaped groove, in groove (11) position, the valve stem of described valve (10) exposes from V-shaped groove.
5. according to claim 1 to 4 arbitrary described engine valve band jitter detection apparatus, it is characterized in that: the longitudinal section of described base plate (1) be shaped as triangle.
6. the detection method of an engine valve band jitter detection apparatus according to claim 5 is characterized in that: the step that described detection method adopts is as follows,
At first base plate (1) is placed on the surface level with its baseplane, then valve to be detected (10) is placed in the V-shaped groove of vee-block (2), and adjust the position of valve (10), make the end face of valve stem withstand steel ball (6) on the baffle plate (7), make the contact of clock gauge (9) withstand the valve sealing band; Stir valve stem in the groove (11) on vee-block (2) at last, valve (10) is rotated; In valve (10) rotation process, if there is runout error valve sealing band position, clock gauge (9) just can show immediately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457310.7A CN102980458B (en) | 2012-11-14 | 2012-11-14 | Engine valve seal belt jumping detecting device and detecting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210457310.7A CN102980458B (en) | 2012-11-14 | 2012-11-14 | Engine valve seal belt jumping detecting device and detecting method thereof |
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| CN102980458A true CN102980458A (en) | 2013-03-20 |
| CN102980458B CN102980458B (en) | 2015-07-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103363861A (en) * | 2013-08-06 | 2013-10-23 | 江苏苏铃精工机械有限公司 | Inspection device for measuring inner cone jumping of small precise main shaft |
| CN103900437A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Inner conical surface bouncing detection device of aircraft engine fuel nozzle |
| CN109323639A (en) * | 2018-10-19 | 2019-02-12 | 嘉兴市易嘉机械有限公司 | A kind of circle jitter detection apparatus of the circumferential side wall of disk |
| CN109458902A (en) * | 2018-12-20 | 2019-03-12 | 安徽江淮汽车集团股份有限公司 | A kind of valve retainer seal f ace width cubing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363861A (en) * | 2013-08-06 | 2013-10-23 | 江苏苏铃精工机械有限公司 | Inspection device for measuring inner cone jumping of small precise main shaft |
| CN103900437A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Inner conical surface bouncing detection device of aircraft engine fuel nozzle |
| CN103900437B (en) * | 2014-04-10 | 2016-08-17 | 西安航空动力股份有限公司 | Aero-engine fuel nozzle inner conical surface jitter detection apparatus |
| CN109323639A (en) * | 2018-10-19 | 2019-02-12 | 嘉兴市易嘉机械有限公司 | A kind of circle jitter detection apparatus of the circumferential side wall of disk |
| CN109458902A (en) * | 2018-12-20 | 2019-03-12 | 安徽江淮汽车集团股份有限公司 | A kind of valve retainer seal f ace width cubing |
| CN109458902B (en) * | 2018-12-20 | 2020-01-14 | 安徽江淮汽车集团股份有限公司 | Valve seat ring sealing surface width checking fixture |
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| CN102980458B (en) | 2015-07-08 |
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