CN205225485U - Combustion chamber of diesel engine - Google Patents
Combustion chamber of diesel engine Download PDFInfo
- Publication number
- CN205225485U CN205225485U CN201521128899.1U CN201521128899U CN205225485U CN 205225485 U CN205225485 U CN 205225485U CN 201521128899 U CN201521128899 U CN 201521128899U CN 205225485 U CN205225485 U CN 205225485U
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- CN
- China
- Prior art keywords
- firing chamber
- diesel engine
- boss
- piston
- aditus laryngis
- 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.)
- Withdrawn - After Issue
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a combustion chamber of diesel engine sets up in the top surface of piston only, the below of combustion chamber is the pinhole, and wherein this combustion chamber includes: the aditus laryngis, it is for locating the cyclic annular arc at combustion chamber middle part is protruding, the aditus laryngis is followed the throat diameter of the axis of pinhole is greater than perpendicularly the throat diameter of the axis of pinhole is through the transition of smooth arc section between the circumference of two ascending throats in side, the kerve, it is for locating the arc wall at combustion chamber bottom edge, and the boss, this boss is located the central part of combustion chamber bottom. When the reliability is guaranteed to this combustion chamber, can guarantee performance requirements.
Description
Technical field
The utility model relates to diesel engine arts, particularly a kind of firing chamber of diesel engine.
Background technique
Along with the requirement promoted diesel engine performance, piston combustion chamber structure improves constantly the significance that cylinder inner tissue burns, this just requires that firing chamber needs to organize as required to be more conducive to combustion-gas flow, but excessive combustion-chamber shape amplitude of variation is in conjunction with high-temperature high-pressure fuel gas effect, particularly easily cause cracking at combustion chamber throat position, even cause ablation fault, cause piston fragmentation and scorification time serious, motor cannot normally work.As the diesel engine of commercial development, safety and reliability is exploitation top priority, must ensure that piston reliability and durability are to ensure diesel engine safety service condition, but also to ensure certain performance requirement, although the combustion-chamber shape designing the reducing of piston throat diameter less can improve safety and reliability, performance cannot be improved in essence.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present utility model, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Model utility content
The purpose of this utility model is the firing chamber providing a kind of diesel engine, thus the aditus laryngis design overcoming existing firing chamber cannot when ensureing reliability, the shortcoming of guaranteed performance demand simultaneously.
For achieving the above object, the utility model provides a kind of firing chamber of diesel engine, be arranged at the end face of piston only, the below of described firing chamber is pin-and-hole, wherein this firing chamber comprises: aditus laryngis, it is the ring-type arc convex be located in the middle part of described firing chamber, and described aditus laryngis is greater than the reentrant diameter of the axis of vertical described pin-and-hole along the reentrant diameter of the axis of described pin-and-hole, and the reducing circumference in both direction is by arcuate segment transition; Kerve, it is the curve bath being located at described bottom of combustion chamber edge; And boss, the central position of described bottom of combustion chamber is located at by this boss.
Preferably, in technique scheme, described firing chamber also comprises interior reducing, and this interior reducing is connected between the end face of piston only and described aditus laryngis, and this interior reducing ring-type curve bath of successively decreasing of the end face of piston only without leave in being.
Preferably, in technique scheme, the central position of the end face of described piston only is located in described firing chamber.
Preferably, in technique scheme, the eccentric position of the end face of described piston only is located in described firing chamber.
Preferably, in technique scheme, between described interior reducing and described aditus laryngis, between described aditus laryngis and described kerve and between described kerve and described boss, pass through round-corner transition.
Preferably, in technique scheme, described boss is ball coronal structure.
Preferably, in technique scheme, described aditus laryngis is greater than the longitudinal thickness of the boss of the axial direction of vertical described pin-and-hole along the longitudinal thickness of the boss of the axial direction of described pin-and-hole, is connected between the bottom of two boss by arcuate segment.
Preferably, in technique scheme, described gullet section is oval.
Compared with prior art, the utility model has following beneficial effect:
The utility model by the combustion chamber throat diameter of piston pin hole axial direction relative to the combustion chamber throat enlarged diameter perpendicular to piston pin hole axial direction, when pistons work, under piston is subject to high-temperature high-pressure fuel gas effect, piston-top surface can present and is out of shape along piston pin hole axial direction, now the stress influence that bears on piston pin hole direction of piston combustion chamber throat is maximum, so the throat structure reducing this position is conducive to the firing chamber stress influence improving this position of piston, and the aditus laryngis throat structure needed for the maintenance of other positions, firing chamber air distribution needed for guaranteed performance exploitation, and then solve the contradiction of performance development demand and piston reliability requirement.
Accompanying drawing explanation
Fig. 1 is according to the aditus laryngis of the utility model firing chamber sectional view perpendicular to piston pin hole axial direction.
Fig. 2 is according to the aditus laryngis of the utility model firing chamber sectional view along piston pin hole axial direction.
Fig. 3 is the plan view according to the utility model firing chamber.
Main Reference Numerals illustrates:
1-piston only, 2-end face, reducing in 3-, 4-aditus laryngis, the reducing in 5-normal pin axially bored line direction, 6-along the reducing of pin-and-hole axial direction, 7-kerve, 8-boss, the axial direction of 9-pin-and-hole.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
Fig. 1 to Fig. 3 shows the structural representation of the firing chamber of the diesel engine according to the utility model preferred implementation.As shown in Figure 1 to Figure 3, the firing chamber of diesel engine is arranged at the end face 2 of piston only 1, the central position of the end face 2 of piston only 1 is preferably located in firing chamber, also firing chamber can be located at the eccentric position (namely offseting piston centre certain distance) of the end face 2 of piston only 1, the below of firing chamber is pin-and-hole.Wherein this firing chamber is provided with successively by end face 2 to the bottom of combustion chamber of piston only 1: interior reducing 3, aditus laryngis 4, kerve 7 and boss 8, top, firing chamber is located in interior reducing 3, this interior reducing 3 is the ring-type curve bath that the end face 2 of interior piston only without leave 1 successively decreases, aditus laryngis 4 is for being located at the ring-type arc convex in the middle part of firing chamber, aditus laryngis 4 is greater than reducing 5 diameter of the axial direction 9 of vertical pin-and-hole along reducing 6 diameter of the axial direction 9 of pin-and-hole, reducing 5 in both direction, by level and smooth arcuate segment transition between the circumference of 6, as shown in Figure 3, viewed from depression angle, aditus laryngis 4 is an ellipse, this design can ensure that reducing 6 along the axial direction 9 of pin-and-hole is as the reliability at the most dangerouse cross-section place of piston combustion bowl, be embodied in, when pistons work, under piston is subject to high-temperature high-pressure fuel gas effect, the axial direction 9 that piston-top surface 2 can present along piston pin hole is out of shape, now the stress influence that bears on the axial direction 9 of piston pin hole of the aditus laryngis 4 of piston combustion bowl is maximum, so the throat structure reducing this position is conducive to improving the firing chamber stress influence at this position of piston to ensure reliability, and the aditus laryngis throat structure needed for the maintenance of other positions, firing chamber air distribution needed for guaranteed performance exploitation, make to strengthen air distribution in cylinder when ensureing reliability, motor is made to reach more high performance demands, kerve 7 is for being located at the curve bath at bottom of combustion chamber edge, the central position of bottom of combustion chamber is located at by boss 8, and boss 8 is preferably set to ball coronal structure, further, the present embodiment is preferably by between interior reducing 3 and aditus laryngis 4, pass through round-corner transition between aditus laryngis 4 and kerve 7 and between kerve 7 and boss 8, knuckle R1 ~ R6, this design can organize rational air motion, the velocity of propagation of Optimizing Combustion turbulence intensity, combustion flame, reinforcement motor fuel Thorough combustion, improve performance.
Continue with reference to 1 and Fig. 2, aditus laryngis 4 in the present embodiment can be processed on original aditus laryngis 4, after processing as depicted in figs. 1 and 2, aditus laryngis 4 is greater than the longitudinal thickness of the boss of the axial direction 9 of vertical pin-and-hole along the longitudinal thickness of the boss of the axial direction 9 of pin-and-hole, connected by arcuate segment between the bottom of two boss, this design also can increase air motion, strengthens motor fuel Thorough combustion.
The aforementioned description to concrete exemplary of the present utility model is to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present utility model and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present utility model and various different selection and change.Scope of the present utility model is intended to limited by claims and equivalents thereof.
Claims (8)
1. a firing chamber for diesel engine, is arranged at the end face of piston only, and the below of described firing chamber is pin-and-hole, it is characterized in that, this firing chamber comprises:
Aditus laryngis, it is the ring-type arc convex be located in the middle part of described firing chamber, and described aditus laryngis is greater than the reentrant diameter of the axial direction of vertical described pin-and-hole along the reentrant diameter of the axial direction of described pin-and-hole;
Kerve, it is the curve bath being located at described bottom of combustion chamber edge; And
Boss, the central position of described bottom of combustion chamber is located at by this boss.
2. the firing chamber of diesel engine according to claim 1, it is characterized in that, described firing chamber also comprises interior reducing, and this interior reducing is connected between the end face of piston only and described aditus laryngis, and this interior reducing ring-type curve bath of successively decreasing of the end face of piston only without leave in being.
3. the firing chamber of diesel engine according to claim 1, is characterized in that, the central position of the end face of described piston only is located in described firing chamber.
4. the firing chamber of diesel engine according to claim 1, is characterized in that, the eccentric position of the end face of described piston only is located in described firing chamber.
5. the firing chamber of diesel engine according to claim 2, is characterized in that, between described interior reducing and described aditus laryngis, passes through round-corner transition between described aditus laryngis and described kerve and between described kerve and described boss.
6. the firing chamber of diesel engine according to claim 1, is characterized in that, described boss is ball coronal structure.
7. the firing chamber of diesel engine according to claim 1, it is characterized in that, described aditus laryngis is greater than the longitudinal thickness of the boss of the axial direction of vertical described pin-and-hole along the longitudinal thickness of the boss of the axial direction of described pin-and-hole, is connected between the bottom of the boss of both direction by arcuate segment.
8. the firing chamber of diesel engine according to claim 1, is characterized in that, described gullet section is oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128899.1U CN205225485U (en) | 2015-12-30 | 2015-12-30 | Combustion chamber of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128899.1U CN205225485U (en) | 2015-12-30 | 2015-12-30 | Combustion chamber of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225485U true CN205225485U (en) | 2016-05-11 |
Family
ID=55900556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521128899.1U Withdrawn - After Issue CN205225485U (en) | 2015-12-30 | 2015-12-30 | Combustion chamber of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464833A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Combustion chamber of diesel engine |
| CN105909420A (en) * | 2016-06-14 | 2016-08-31 | 广西玉柴机器股份有限公司 | Combustion chamber capable of reducing soot in diesel engine cylinder |
-
2015
- 2015-12-30 CN CN201521128899.1U patent/CN205225485U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464833A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Combustion chamber of diesel engine |
| CN105909420A (en) * | 2016-06-14 | 2016-08-31 | 广西玉柴机器股份有限公司 | Combustion chamber capable of reducing soot in diesel engine cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160511 Effective date of abandoning: 20181102 |
|
| AV01 | Patent right actively abandoned |