CN202165157U - Six heart valve type combustion chamber - Google Patents
Six heart valve type combustion chamber Download PDFInfo
- Publication number
- CN202165157U CN202165157U CN2011200125899U CN201120012589U CN202165157U CN 202165157 U CN202165157 U CN 202165157U CN 2011200125899 U CN2011200125899 U CN 2011200125899U CN 201120012589 U CN201120012589 U CN 201120012589U CN 202165157 U CN202165157 U CN 202165157U
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- China
- Prior art keywords
- petal
- type
- combustion chamber
- center
- piston
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- 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 - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a combustion chamber structure, in particular to a six heart valve type combustion chamber, which can be applied to a high-speed direct injection type diesel engine piston. The combustion chamber is arranged at the center of the piston, the top face of the combustion chamber overlaps the upper surface of the piston, the center line of the combustion chamber overlaps the center line of the piston, and no eccentricity exists. The combustion chamber is mainly composed of a 'W-type' structure and six petal-shaped shallow pits, wherein the 'W-type' structure is in central symmetry and not provided with a necking, and the petal-shaped shallow pits are distributed in central symmetry mode. The 'W-type' structure is arranged under the six heart valve type combustion chamber, the axis of the 'W-type' structure overlaps the axis of the combustion chamber, and the center of the 'W-type' structure is a cone, and the cone angle of the cross section of the center is 127 degrees. The petal-shaped shallow pits are externally connected with excircles of the 'W-type' structure, the radian of each petal is 132 degrees, and the included angle formed by the center lines of adjacent petal-shaped shallow pits is 60 degrees.
Description
Technical field:
The utility model relates to a kind of petal firing chamber, specifically is used for diesel engine with direct injection.
Background technique:
Diesel engine progressively develops to the high power density direction, and miniature high-speed direction-injection diesel engine combustion chamber diameter is less, and the fuel oil penetration degree is little, and piston movement speed is fast, has brought difficulty for the burning tissue.Improve the complete machine specific power, improving burning is inevitable approach.
Summary of the invention:
Be to solve above-mentioned difficulties, the utility model proposes a kind of " petal-shaped " chamber structure, and this structure processing technique difficulty is moderate, satisfy high speed direct jet diesel engine to the firing chamber requirement.
The integral body of firing chamber is positioned at internal piston, and structure forms for " ω type " structure and petal shallow hole structure composition.The firing chamber integral body structure that is centrosymmetric, its symmetry center overlaps with piston axis.The firing chamber upper surface overlaps with piston upper surface; The dark 14.03mm in firing chamber, circumscribed circle diameter are 73.09mm.Firing chamber integral body also is axially symmetric structure, helps to reduce difficulty of processing.
" ω type " structure and petal shallow hole structure are mainly formed by two-part in the firing chamber, and " ω type " structure is positioned at the below, and petal shallow hole structure is positioned at the top.
The dark 12.03mm of " ω type " structure, its outside diameter 46.5mm does not have reducing, and bottom center is 127 ° a conical protrusions for the cross section cone angle, and circular cone and bottom section circular arc are tangent; Cross section center of arc and piston-top surface, the distance between axis are respectively 5.57mm and 14.59mm, and the radius of circular arc is 9.09mm; Cut with circular arc perpendicular to piston upper surface mutually " ω type " structure outer.
Petal shallow hole is positioned at the top of " ω type " structure; Its upper surface overlaps with piston upper surface, and the degree of depth is 2mm, and quantity is 6; Be centrosymmetric with the center, firing chamber; In the whole petal shallow hole structure, each the petal center and the firing chamber line of centres axisymmetricly, the angle of adjacent petal center line is 60 °; Each petal shallow hole is that radius is that 11.37mm, radian are 132 ° circular arcs, and the distance of petal center and centre is 25.19mm.
Description of drawings:
The front view of the petal firing chamber of Fig. 1
The plan view of the petal firing chamber of Fig. 2
Among the figure, 1-" shallow ω type " pit, 2-" petal " shape shallow hole
Specific embodiments:
Shown in the accompanying drawing, this petal firing chamber is arranged in the diesel engine with direct injection piston, and the firing chamber axis overlaps with piston axis, and without acceptance of persons, the upper-end surface, firing chamber overlaps with piston upper surface, and the degree of depth is 14.03mm, and circumscribed circle diameter is 73.09mm.Firing chamber integral body is centrosymmetric structure, and its symmetry center overlaps with the center of piston; It also is axially symmetric structure; The firing chamber mainly is divided into two-part, and the top is petal shallow hole structure, and the below is " ω type " structure, and petal firing chamber is that 11.37mm, radian are that 132 ° circular arc is formed petal centre distance centre 25.19mm by six radiuses.See that from accompanying drawing 2 petal shallow hole is external in " ω type " structure.
During air motion, a part of air inlet charge directly gets into the ω structure, and at first the flow through edge of petal shallow hole of another part charge is at the flow perturbation that axially forms small scale; It is inner then to get into petal shallow hole, and under the effect of petal shape, circumferentially forms the bigger eddy flow of yardstick; This part air inlet charge is last to get into shallow ω structure, with the acting in conjunction of piston motion under, the turbulent motion of charge is further strengthened, thereby has been strengthened fuel oil and air mixing.Petal shallow hole mutually disjoints, and six petal shallow holes of combustion chamber placement can utilize petal design to greatest extent.
Claims (3)
1. a heart lobe type firing chamber is characterized by " ω type " structure and six petal shallow holes compositions, is positioned at internal piston, and its axis overlaps with piston axis, and is not eccentric, overlapped with piston upper surface by its upper surface; The dark 14.03mm in firing chamber, circumscribed circle diameter are 73.09mm.
2. six heart lobe type firing chambers according to claim 1 is characterized in that, the dark 12.03mm of said " ω type " structure, and its outside diameter 46.5mm is not with reducing, and the center is 127 ° a conical protrusions for the cross section cone angle, and circular cone and bottom section circular arc are tangent.
3. six heart lobe type firing chambers according to claim 1 is characterized in that said petal shallow hole is positioned at the top of " ω type " structure; Its upper surface overlaps with piston upper surface; The degree of depth is 2mm, is centrosymmetric with the center, firing chamber, in the whole petal shallow hole structure; The center of each petal shallow hole and the firing chamber line of centres axisymmetricly, the angle of the center line of adjacent petal shallow hole is 60 °; Each petal shallow hole is that radius is that 11.37mm, radian are 132 ° circular arcs, and the center of petal shallow hole and the distance of centre are 25.19mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200125899U CN202165157U (en) | 2011-01-07 | 2011-01-07 | Six heart valve type combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200125899U CN202165157U (en) | 2011-01-07 | 2011-01-07 | Six heart valve type combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165157U true CN202165157U (en) | 2012-03-14 |
Family
ID=45800989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200125899U Expired - Fee Related CN202165157U (en) | 2011-01-07 | 2011-01-07 | Six heart valve type combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320573A (en) * | 2021-12-29 | 2022-04-12 | 天津大学 | Piston combustion chamber for air valve type two-four stroke convertible high power diesel engine |
-
2011
- 2011-01-07 CN CN2011200125899U patent/CN202165157U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320573A (en) * | 2021-12-29 | 2022-04-12 | 天津大学 | Piston combustion chamber for air valve type two-four stroke convertible high power diesel engine |
| CN114320573B (en) * | 2021-12-29 | 2024-04-19 | 天津大学 | Piston combustion chamber for air valve type two-four stroke changeable high power diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20130107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |