CN203742821U - Lengthening piston of optical engine - Google Patents

Lengthening piston of optical engine Download PDF

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Publication number
CN203742821U
CN203742821U CN201420074446.4U CN201420074446U CN203742821U CN 203742821 U CN203742821 U CN 203742821U CN 201420074446 U CN201420074446 U CN 201420074446U CN 203742821 U CN203742821 U CN 203742821U
Authority
CN
China
Prior art keywords
piston
optical engine
upper body
lengthening
lengthened
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.)
Expired - Lifetime
Application number
CN201420074446.4U
Other languages
Chinese (zh)
Inventor
琚雪明
刘华龙
刘国庆
王伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
SAIC Chery Automobile Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAIC Chery Automobile Co Ltd filed Critical SAIC Chery Automobile Co Ltd
Priority to CN201420074446.4U priority Critical patent/CN203742821U/en
Application granted granted Critical
Publication of CN203742821U publication Critical patent/CN203742821U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a lengthening piston of an optical engine. The lengthening piston comprises a piston body which comprises a piston upper body and a piston lengthening part, and the piston upper body and the piston lengthening part are connected through a locking nut. A corresponding positioning hole is formed between the piston upper body and the piston lengthening part, and a positioning pin is arranged in the positioning hole. The piston is divided into an upper part and a lower part which are connected through a bolt, and therefore dismounting and mounting of the lengthening piston are more convenient. The upper part and the lower part of the piston are limited through the positioning pin and the positioning hole, the consistency in the dismounting process is guaranteed, a good positioning effect and a good mistake proofing effect are achieved, and dismounting and mounting are easier and more convenient.

Description

A kind of optical engine lengthened piston
Technical field
The utility model relates to optical engine technical field, especially relates to a kind of optical engine lengthened piston.
Background technique
Optical engine is mainly used in studying motor in-cylinder combustion spraying situation at present, flame propagation situation, Soot Formation situation etc., adopt lengthened piston and gather image at transparent window and the reflector of piston-top surface setting by via Laser-induced Fluorescence Method and high speed camera, thereby to smooth in cylinder, the wet wall of spraying, in-cylinder combustion situation is studied, but, in the working procedure of optical engine, particularly after burning, need to clean transparent cylinder sleeve and transparent piston, and the sealed piston ring of replacing lengthened piston part, therefore will often dismantle piston.
But the dismounting of existing optical engine lengthened piston is loaded down with trivial details, lose time, recover installation steps also more loaded down with trivial details, and be difficult to ensure conformity when piston recovers assembling, thereby cause test conditions disunity, affect final test result.
Model utility content
For prior art deficiency, technical problem to be solved in the utility model is to provide a kind of optical engine lengthened piston, to reach object easy for removal and installation.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of optical engine lengthened piston, comprise piston only, described piston only comprises piston upper body and piston lengthening part, between described piston upper body and piston lengthening part, be connected by locking nut, and be provided with corresponding positioning hole between piston upper body and piston lengthening part, in described positioning hole, be provided with locating stud.
Further, described piston lengthening part upper end is provided with the locating slot suitable with lower end, piston upper body.
In described piston lengthening part, be provided with the nut installation step suitable with locking nut.
Described piston upper body comprises piston ectosome and piston endosome, between described piston ectosome and piston endosome, matches by screw thread, and described piston ectosome top is provided with transparent window, between piston ectosome top and piston endosome top, is provided with clear glass.
Described piston lengthening part lower end outer wall is provided with scraper ring and oil control ring.
Described piston endosome outer wall is provided with closure gasket groove, is provided with the seal ring that adopts Teflon material in described closure gasket groove.
The utility model compared with prior art, has the following advantages:
1, piston is divided into upper and lower two-part, is connected by bolt, makes lengthened piston dismounting and easier for installation;
2, two-part up and down of piston are undertaken spacingly by locating stud and positioning hole, have ensured the conformity of disassembly process to play good location and mistake proofing effect;
3, piston lengthening part is provided with locating slot and nut installation step, effectively limiting piston and locking nut are installed, also be provided with scraper ring simultaneously, can prevent piston movement time, machine oil is splashed on reflecting mirror, impact is taken, and the oil control ring of setting can again strike off and participates in machine oil and make it get back to crankcase;
4, the seal ring on piston adopts Teflon material ring, and the position arranging can effectively prevent scratch transparent cylinder sleeve and play good seal action;
5, this lengthened piston for optical engine is introduced the guiding of piston wall in optical engine process of the test, can check more intuitively advantage and the deficiency of air-flow guiding and piston-top surface guiding spraying and flame propagation, open up another approach of optical engine test, thereby can adjust engine calibration data according to test result.
Brief description of the drawings
Below the mark in the each width accompanying drawing of this specification expressed content and figure is briefly described:
Fig. 1 is the utility model piston structure schematic diagram.
Fig. 2 is the utility model piston partial sectional view.
In figure: 1. piston ectosome, 2. piston endosome, 3. transparent window, 4. clear glass, 5. locating stud, 6. piston lengthening part, 7. oil control ring, 8. scraper ring, 9. connecting rod, 10. locking nut.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail.
As depicted in figs. 1 and 2, this optical engine lengthened piston, comprises piston upper body and piston lengthening part 6, the top that one end, piston upper body is piston, between the piston upper body the other end and piston lengthening part 6 one end, locking nut 10 is connected, and piston lengthening part 6 the other ends are connected with the connecting rod 9 of motor.
Piston upper body comprises piston endosome 2 and the piston ectosome 1 with wall guide portion and window part, the inwall of piston ectosome 1 is provided with internal thread, piston endosome 2 epimere outer walls are provided with the outside thread suitable with piston ectosome 1 internal thread, match together by internal and external screw thread between the two, easy for removal and installation.Wherein, piston upper body and piston lengthening part 6 all adopt aluminum alloy material to make, and have reduced the total quality of piston.
Piston ectosome 1 top is provided with transparent window 3, and be provided with the chamfering and the plane that fit with clear glass 4 in piston ectosome 1 inside, after piston ectosome 1 and clear glass 4 laminatings put in place, make its upper surface be close to clear glass 4 by revolving with piston endosome 2, ensure that clear glass 4 does not get loose and rocks.
Piston endosome 2 bottoms are provided with closure gasket groove, are provided with seal ring at closure gasket groove, and seal ring adopts the seal ring of Teflon material, and O type circle is located in seal ring, ensure that the sealing between piston and transparent cylinder sleeve is tight, prevent gas leakage, have ensured its sealability.Because Teflon piston ring mounting point is in the bottom of piston endosome part, guarantee piston ring part is only moved and can not entered the friction formation of transparent cylinder sleeve in Metallic cylinder, thereby has ensured turbidity test, clearness and the durability of transparent cylinder sleeve.
Between piston endosome 2 lower ends and piston lengthening part 6, be connected by locking nut 10, and be provided with corresponding positioning hole between piston endosome 2 and piston lengthening part 6, in positioning hole, be provided with locating stud 5.Piston lengthening part 6 upper ends are provided with the locating slot suitable with piston endosome lower end.And in piston lengthening part, be provided with the nut installation step suitable with locking nut.By following measures, can prevent that the situation of piston direction misloading from occurring, make assembling more convenient.
Piston ectosome 1 and piston endosome 2 and piston lengthening part 6 are coaxial, thereby have ensured that lengthened piston is along cylinder sleeve axis vertical motion, improve the stability of motor operation.
On piston lengthening part 6 lower end outer walls, be provided with scraper ring 8 and oil control ring 7.Can prevent piston movement by scraper ring time, machine oil is splashed on reflecting mirror, and impact is taken, and oil control ring can again strike off and participates in machine oil and make it get back to crankcase.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that design of the present utility model and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims (6)

1. an optical engine lengthened piston, comprise piston only, it is characterized in that: described piston only comprises piston upper body and piston lengthening part (6), between described piston upper body and piston lengthening part (6), be connected by locking nut (10), and be provided with corresponding positioning hole between piston upper body and piston lengthening part (6), in described positioning hole, be provided with locating stud (5).
2. optical engine lengthened piston as claimed in claim 1, is characterized in that: described piston lengthening part (6) upper end is provided with the locating slot suitable with lower end, piston upper body.
3. optical engine lengthened piston as claimed in claim 1, is characterized in that: in described piston lengthening part (6), be provided with the nut installation step suitable with locking nut (10).
4. optical engine lengthened piston as claimed in claim 1, it is characterized in that: described piston upper body comprises piston ectosome (1) and piston endosome (2), between described piston ectosome (1) and piston endosome (2), match by screw thread, described piston ectosome (1) top is provided with transparent window (3), between piston ectosome (1) top and piston endosome (2) top, is provided with clear glass (4).
5. optical engine lengthened piston as claimed in claim 1, is characterized in that: described piston lengthening part (6) lower end outer wall is provided with scraper ring (8) and oil control ring (7).
6. optical engine lengthened piston as claimed in claim 4, is characterized in that: described piston endosome (2) outer wall is provided with closure gasket groove, is provided with the seal ring that adopts Teflon material in described closure gasket groove.
CN201420074446.4U 2014-02-20 2014-02-20 Lengthening piston of optical engine Expired - Lifetime CN203742821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420074446.4U CN203742821U (en) 2014-02-20 2014-02-20 Lengthening piston of optical engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420074446.4U CN203742821U (en) 2014-02-20 2014-02-20 Lengthening piston of optical engine

Publications (1)

Publication Number Publication Date
CN203742821U true CN203742821U (en) 2014-07-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420074446.4U Expired - Lifetime CN203742821U (en) 2014-02-20 2014-02-20 Lengthening piston of optical engine

Country Status (1)

Country Link
CN (1) CN203742821U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107023378A (en) * 2017-06-01 2017-08-08 天津大学 Burning chamber of diesel engine with visualization form
CN108982112A (en) * 2018-07-31 2018-12-11 宁波市鄞州德来特技术有限公司 A kind of optical engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107023378A (en) * 2017-06-01 2017-08-08 天津大学 Burning chamber of diesel engine with visualization form
CN108982112A (en) * 2018-07-31 2018-12-11 宁波市鄞州德来特技术有限公司 A kind of optical engine

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CX01 Expiry of patent term
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Granted publication date: 20140730