CN2913641Y - Diesel engine piston combustion chamber - Google Patents
Diesel engine piston combustion chamber Download PDFInfo
- Publication number
- CN2913641Y CN2913641Y CN 200520099953 CN200520099953U CN2913641Y CN 2913641 Y CN2913641 Y CN 2913641Y CN 200520099953 CN200520099953 CN 200520099953 CN 200520099953 U CN200520099953 U CN 200520099953U CN 2913641 Y CN2913641 Y CN 2913641Y
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- diesel engine
- engine piston
- firing chamber
- piston combustion
- 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
Links
Abstract
A diesel engine piston combustion chamber is characterized in that the top and bottom of the combustion chamber are configured to a necking deep recess and a smooth arc respectively, the volume of the combustion chamber is 19.6ml, and the aperture and depth of the combustion chamber are 43.8mm and 13.86mm respectively. The utility model can fit well with the intake system and fuel oil injection system and ensures the optimum oil-gas combination, complete combustion, and minimum exhaust emission.
Description
Technical field:
The utility model relates to field of internal combustion engine, particularly a kind of diesel engine piston firing chamber.
Background technique:
The firing chamber is positioned on the piston head, and mainly function is high pressure fuel and interior quick, abundant the mixing of air of cylinder that makes injection, to guarantee that realization is burnt completely near top dead center.
The firing chamber of a good design should make motor have high mean effective pressure, high Economy, and also fuel consumption rate is insensitive to the variation of rotating speed and load; Make engine heat load low, reliable operation; Engine operation is soft, and noise is low; Exhaust pollution is few, and smoke evacuation is few; Starting and acceleration performance are good.
In order to obtain good mixing and combustion process, the geometrical shape of firing chamber must with the gas flow matched well in fuel injection processes and the cylinder.Existing diesel engine piston firing chamber can't meet the demands.
Summary of the invention:
The purpose of this utility model provides a kind of diesel engine piston firing chamber, and it can be good fit with gas handling system and fuel injection system effectively, reaches best oil gas mixing quality, burning the most completely, minimum discharging.
Of the present utility model being characterised in that: top of combustion chamber is a reducing dell shape, and the bottom is a middle transition circular arc; Described combustion chamber volume is 19.6ml, firing chamber bore 43.8mm, degree of depth 13.86mm.
Description of drawings:
Fig. 1 is a stereogram of the present utility model.
Fig. 2 is a piston combustion cell structure cut-away view of the present utility model.
Embodiment:
As shown in the figure, a kind of diesel engine piston firing chamber that the utility model provides, top of combustion chamber 1 is reducing dell shape, and bottom 2 is a middle transition circular arc, and profile is slightly as dumbbell-like shape.Bottom, firing chamber 2 central protrusion platforms can effectively gather heat, make it still keep higher temperature at the compression stroke end, the delay period of ignition of fuel is shortened, air swirl in firing chamber when the fine maintenance piston arrives atdc of top 1 reducing energy is descending, effectively improve smoke intensity, smoke emission in the time of particularly reducing rotating speed by a relatively large margin.
Claims (2)
1, a kind of diesel engine piston firing chamber is characterized in that: top of combustion chamber (1) is reducing dell shape, and bottom (2) are middle transition circular arc.
2, firing chamber as claimed in claim 1 is characterized in that: the volume of firing chamber is 19.6ml, firing chamber bore 43.8mm, degree of depth 13.86mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520099953 CN2913641Y (en) | 2005-11-17 | 2005-11-17 | Diesel engine piston combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520099953 CN2913641Y (en) | 2005-11-17 | 2005-11-17 | Diesel engine piston combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913641Y true CN2913641Y (en) | 2007-06-20 |
Family
ID=38168241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520099953 Expired - Lifetime CN2913641Y (en) | 2005-11-17 | 2005-11-17 | Diesel engine piston combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2913641Y (en) |
-
2005
- 2005-11-17 CN CN 200520099953 patent/CN2913641Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070620 |
|
| EXPY | Termination of patent right or utility model |