CN202467955U - Engine timing positioning device - Google Patents
Engine timing positioning device Download PDFInfo
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- CN202467955U CN202467955U CN2012200624478U CN201220062447U CN202467955U CN 202467955 U CN202467955 U CN 202467955U CN 2012200624478 U CN2012200624478 U CN 2012200624478U CN 201220062447 U CN201220062447 U CN 201220062447U CN 202467955 U CN202467955 U CN 202467955U
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- correct time
- timing
- flywheel
- pin
- hole
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Abstract
An engine timing positioning device belongs to the field of engines. The periphery of the flywheel (1) is provided with a timing mark groove (2), the flywheel shell (4) is provided with a timing pin seat (5), coaxial through holes are arranged on the flywheel shell (4) and the timing pin seat (5), the through holes are used for the middle part of the timing pin (3) to pass through, so that the front end of the timing pin (3) is inserted into the timing mark groove (2), a timing pin clamping groove (9) is arranged in the middle part of the timing pin (3), the timing pin locking plate (6) is clamped in the timing pin clamping groove (9), and because the through hole is formed on the flywheel shell, a timing pin clamping groove is formed in the middle of the timing pin, when the timing pin is inserted into the hole and reaches the timing pin clamping groove on the flywheel, the piston upwards just reaches the upper stop point to realize timing positioning, and the precision is high, the efficiency is high, the structure is simple, the operation is convenient, the deviation of the gas distribution phase angle is less than 5 degrees, and the accurate timing positioning can be realized by rotating the flywheel for 1 circle at most.
Description
Technical field
The utility model relates to engine device, relates in particular to a kind of engine timing positioning device of mechanical pump diesel engine, belongs to engine art.
Background technique
For the mechanical pump diesel engine, accomplish low emission, high efficiency depends primarily on four big factors of diesel combustion, comprises in-cylinder pressure, temperature, fuel performance and injection timing that compression ends.Wherein, injection timing is in the diesel engine regular maintenance, the factor that discharging is had the greatest impact.Find according to statistics, improper in the repairing of 195 diesel engines because of injection timing, cause port timing angular deviation to account for more than 30%, make diesel combustion incomplete, oil consumption increases, and causes diesel engine power to descend.
The effect of engine timing is exactly when engine running; The stroke of piston, the open and close of valve, valve timing diagram; Constantly will keep " synchronously " running, promptly through the timing mechanism of motor, let each cylinder just in time accomplish: piston begins when making progress just in time to top dead center, valve is just in time closed and order is accomplished a series of actions; Make motor accomplish a work cycle, go round and begin again.When the correct time that fixes over an engine, its key point is exactly to confirm the top dead center of a cylinder piston, is also referred to as the location in correct time, this locating basis has been arranged after, the motion state correctness of other parts has just had determinating reference.Correct time, the location was accurate more, and the motion state error of other parts is just more little, and engine operation is normal more, otherwise opposite.But for present mechanical pump diesel engine; Itself be not with top dead center to confirm device; Then correct time, the location had only through with the naked eye judging; Promptly corresponding oil pump gear place opens a peep hole on the end plate that oil pump is installed, and with the naked eye judges the top dead center approximate location, and the top dead center position degree of accuracy that this mode is confirmed is accurate inadequately.Certainly, traditional localization method in correct time calm the anger in addition Men Fa and the methods such as lift of measuring piston, these methods all need be dismantled the component of motor, and very loaded down with trivial details brings very big trouble for maintaining in the future.
More to locating improved way traditional correct time; Relatively be typically; Like Chinese patent notification number: CN2775308Y, the day for announcing: on April 26th, 2006, model utility title: " engine timing mechanism "; It is in the upper dead center position place at bent axle, and on bent axle and crankcase, being provided with can be with the index aperture of the fixing two part relative positions of frock.Though existing technology can reach the requirement of location in correct time, and can avoid because the timing error that machining and assembling are brought.But, existing technology will be on bent axle and crankcase the machining identification hole, then have 3 deficiencies:
1, machining identification hole on the bent axle can influence strength of crankshaft;
2, on sign hole on the crankcase and the bent axle sign hole align pretty troublesome;
3, distance is bigger between bent axle and the crankcase, adopts frock fixing operation error bigger.
Summary of the invention
The purpose of the utility model is that to overcome existing machinery pump diesel engine positioning difficulty in correct time big, low precision, and inconvenient defective and deficiency provide a kind of simple in structure, easy to use, and precision is high, and the lower a kind of engine timing positioning device of fabricating cost.
For realizing above-mentioned purpose, the technological scheme that the utility model adopts is: a kind of engine timing positioning device comprises flywheel, flywheel casing; Mark groove in correct time is arranged on the described flywheel periphery, the key seat in correct time is installed on the described flywheel casing, there are coaxial through-hole in described flywheel casing and correct time on the key seat; Through hole supplies pass in the middle part of the pin correct time; The front end that sold correct time is inserted in the mark groove in correct time, has in the middle part of the pin correct time to sell draw-in groove correct time, sells in correct time to be installed with lock sheet in correct time in the draw-in groove; Described correct time, the lock sheet was contained on the stud bolt, through locking nut with correct time the lock sheet be fastened on the key seat in correct time.
The rear end that sell described correct time is the holding part.
Described correct time key seat through hole, the little gap in aperture and pin middle part in correct time is movingly.
The through hole of described flywheel casing, the little gap in aperture and pin middle part in correct time movingly.
Described correct time, key seat was to be screwed on flywheel casing.
Compared with prior art, the beneficial effect of the utility model is: owing to be employed in and make through hole on the flywheel casing, correct time the pin middle part make and sell draw-in groove correct time, when sell draw-in groove the correct time to flywheel in the correct time pin insertion hole; Piston upwards just in time arrives top dead center, realize the location in correct time, and precision is high; Efficient is high, and is simple in structure, easy to operate; Make port timing angular deviation less than 5 degree, rotary flywheel 1 encloses at most, and just accurately locate for correct time.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the utility model unused state schematic representation.
Among the figure: flywheel 1, correct time, the mark groove 2, sold 3 correct time, flywheel casing 4, correct time, key seat 5, and correct time, the lock sheet 6, locking nut 7, stud bolt 8 is sold draw-in groove 9 correct time.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is done further description, but be not restriction its protection domain.
Referring to Fig. 1, Fig. 2, a kind of engine timing positioning device of the utility model comprises flywheel 1, flywheel casing 4; Mark groove 2 in correct time is arranged on described flywheel 1 periphery, key seat 5 in correct time is installed on the described flywheel casing 4, described flywheel casing 4 has coaxial through-hole with correct time on the key seat 5; Through hole supplies sell 3 middle parts correct time to pass; Make and sell 3 front end correct time and be inserted in the mark groove 2 in correct time, selling 3 middle parts correct time has and sells draw-in groove 9 correct time, sells in correct time to be installed with lock sheet 6 in correct time in the draw-in groove 9; Described correct time, the lock sheet 6 was contained on the stud bolt 8, through locking nut 7 with correct time lock sheet 6 be fastened on the key seat 5 in correct time.
Selling 3 rear end described correct time is the holding part.
Described correct time, key seat 5 through hole was sold little gap, 3 middle parts in aperture and correct time movingly.
The through hole of described flywheel casing 4 is sold little gap, 3 middle parts in aperture and correct time movingly.
Described correct time, key seat 5 was to be screwed on flywheel casing 4.
Correct time key seat 5 aligning steps: engine piston is shaken a cylinder atdc, inserts in key seats 5 the through hole in correct time selling 3 correct time; Pass the through hole of flywheel casing 4 again, adjustment key seat in correct time 5 position makes and sells 3 correct time and just in time fall into flywheel mark groove in 1 last correct time 2; At last with correct time key seat 5 be fastened on flywheel casing 4, or be screwed on flywheel casing 4.This moment, correct time, key seat 5 was fixing, sold 3 correct time and inserted flywheel mark groove in 1 last correct time 2, was and had located correct time.If extract and sell 3 correct time, rotary flywheel 1, correct time, positioning runout was rotated further flywheel 1, let correct time and sell 3 insert flywheel mark groove in 1 last correct time 2 once more, had then accomplished the location in correct time again.
It is rapid to sell 3 solid lock-steps correct time: for ease of when repairing, using; After having accomplished the location in correct time; Can outwards pull out selling 3 correct time, make and sell the 3 mark grooves 2 in correct time that break away from fully on the flywheel 1 correct time, at this moment with correct time lock sheet 6 insert and sell in the draw-in groove 9 correct time; Compress lock sheet 6 in correct time with locking nut 7 again, wait to repair use.
Correct time positioning step: unclamp locking nut 7 earlier, sell the draw-in groove 9 from correct time and throw off lock sheet 6 in correct time, selling 3 correct time this moment can be in axially motion in correct time key seat 5 the through hole; Rotary flywheel 1 again, makes to sell 3 correct time and just in time insert correct time on the flywheel 1 in the mark groove 2.
When motor need turn round, should be earlier rapid by selling 3 solid lock-steps correct time, after the completion, when treating need readjust the distribution next time motivation and locating correct time, again by correct time positioning step get final product.
Diesel engine is not only in the location in correct time of the main completion motor of the utility model, and petrol engine is suitable for too.The utility model is installed like timing belt etc. on the basis of location in correct time accurately the correct time of other parts of next accomplishing, and identical with existing technology, this paper does not give unnecessary details.
Claims (5)
1. engine timing positioning device; Comprise flywheel (1), flywheel casing (4); It is characterized in that: on described flywheel (1) periphery mark groove in correct time (2) is arranged, key seat in correct time (5) is installed on the described flywheel casing (4), on described flywheel casing (4) and the key seat in correct time (5) coaxial through-hole is arranged; Through hole supplies pin in correct time (3) middle part to pass; The front end of pin in correct time (3) is inserted in the mark groove in correct time (2), and pin in correct time (3) middle part has sells draw-in groove (9) correct time, sells in correct time to be installed with lock sheet in correct time (6) in the draw-in groove (9); Described lock sheet in correct time (6) is contained on the stud bolt (8), through locking nut (7) lock sheet in correct time (6) is fastened on the key seat in correct time (5).
2. a kind of engine timing positioning device according to claim 1 is characterized in that: the rear end of described pin in correct time (3) is the holding part.
3. a kind of engine timing positioning device according to claim 1 is characterized in that: the through hole of described key seat in correct time (5), the little gap in aperture and pin in correct time (3) middle part movingly.
4. a kind of engine timing positioning device according to claim 1 is characterized in that: the through hole of described flywheel casing (4), the little gap in aperture and pin in correct time (3) middle part movingly.
5. a kind of engine timing positioning device according to claim 1 is characterized in that: described key seat in correct time (5) is to be screwed on flywheel casing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200624478U CN202467955U (en) | 2012-02-24 | 2012-02-24 | Engine timing positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200624478U CN202467955U (en) | 2012-02-24 | 2012-02-24 | Engine timing positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467955U true CN202467955U (en) | 2012-10-03 |
Family
ID=46916120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200624478U Expired - Lifetime CN202467955U (en) | 2012-02-24 | 2012-02-24 | Engine timing positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467955U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697291A (en) * | 2013-12-16 | 2014-04-02 | 潍坊盛瑞动力机械科技有限公司 | Flywheel shell convenient to assemble |
| CN105479364A (en) * | 2015-10-09 | 2016-04-13 | 宁波吉利罗佑发动机零部件有限公司 | Engine cylinder upper stop point positioning device and positioning method |
| CN113218579A (en) * | 2021-04-06 | 2021-08-06 | 山推工程机械股份有限公司 | Timing pointer mechanism for flywheel housing of bulldozer |
-
2012
- 2012-02-24 CN CN2012200624478U patent/CN202467955U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697291A (en) * | 2013-12-16 | 2014-04-02 | 潍坊盛瑞动力机械科技有限公司 | Flywheel shell convenient to assemble |
| CN105479364A (en) * | 2015-10-09 | 2016-04-13 | 宁波吉利罗佑发动机零部件有限公司 | Engine cylinder upper stop point positioning device and positioning method |
| CN105479364B (en) * | 2015-10-09 | 2017-04-12 | 浙江吉利罗佑发动机有限公司 | Engine cylinder upper stop point positioning device and positioning method |
| CN113218579A (en) * | 2021-04-06 | 2021-08-06 | 山推工程机械股份有限公司 | Timing pointer mechanism for flywheel housing of bulldozer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130903 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430056 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130903 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: Dongfeng Commercial Vehicle Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic Development Zone, Hanyang District, Hubei, China, No. 10, No. Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |