CN200955453Y - Direct-jetting single-cylinder diesel engine cylinder head air-intake duct - Google Patents
Direct-jetting single-cylinder diesel engine cylinder head air-intake duct Download PDFInfo
- Publication number
- CN200955453Y CN200955453Y CNU2006200703313U CN200620070331U CN200955453Y CN 200955453 Y CN200955453 Y CN 200955453Y CN U2006200703313 U CNU2006200703313 U CN U2006200703313U CN 200620070331 U CN200620070331 U CN 200620070331U CN 200955453 Y CN200955453 Y CN 200955453Y
- Authority
- CN
- China
- Prior art keywords
- intake duct
- inlet channel
- diesel engine
- supporting boss
- cylinder head
- 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 - 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an improved proposal of the inlet channel on the cylinder cover of a diesel with straight injection and single cylinder that shortens the tail length of the inlet channel by 3mm to 5mm and increases the semi-diameter R on the internal side at the corner of the inlet channel by 10 percent to 20 percent; besides, the transmission of the shape of the internal wall on the inlet channel is smooth and stable without sudden changes; the area of a supporting boss of a valve tube is 5 to 10 times larger than that of the corner at the inlet channel; and the vertical area of the inlet channel section at the supporting boss of the valve tube is increased by 3mm to 5mm. Through the improvement, the air inlet vortex and the strength of the vortex can be organized properly, the burning condition of the engine can be improved effectively, the air utilization rate can be increased, and the fuel consumption and pollutant discharge can be decreased.
Description
Technical field
The utility model relates to a kind of straight spray single cylinder diesel, specifically directly sprays single cylinder diesel cylinder head intake duct and improves.
Background technique
Single cylinder diesel is directly sprayed from the ability Development and Production nineties in last century in China, and direct injection technology is advanced and perfect not enough, and performance index such as the reliability of diesel engine, Economy and discharging are compared a certain distance in addition with external like product.Cylinder head is one of diesel engine most critical part, cylinder head intake duct design rationally whether, directly influenced every performance of diesel engine, organize rational intake swirl and strength of vortex, can effectively improve the combustion condition of diesel engine, improve air utilization ratio, reduce fuel consume and reduce pollutant emission.
Summary of the invention
The purpose of this utility model is transformed the cylinder head intake duct exactly, to improve the combustion condition of diesel engine, improves air utilization ratio, reduces fuel consume and reduces pollutant emission.
The purpose of this utility model is to realize like this, a kind of straight spray single cylinder diesel cylinder head intake duct, by the intake duct afterbody, the intake duct turning part, the intake duct head, constitute with valve catheter support boss, it is characterized in that the shorten length 3-5mm of intake duct afterbody, the radius R of intake duct turning part inner surface increases 10-20%, the transition of intake duct inner wall shape is steadily slick and sly, does not have suddenly to change, and valve guide bushing supporting boss sectional area ratio intake duct turning part sectional area increases 5-10%; The longitudinal size in the intake duct cross section at valve guide bushing supporting boss place increases 3-5mm.
Good effect of the present utility model is by the combustion condition of diesel engine that intake duct has been improved, to improve air utilization ratio, the reduction fuel consume.Reduce the discharging of pollutant.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a cylinder cover for diesel engine intake duct plan view;
Fig. 2 is the left view of cylinder cover for diesel engine intake duct, the vertical face shaping in signal valve guide bushing supporting boss place;
Fig. 3 is the overall structure shape of spiral inlet duct.
Among the figure: 1, intake duct afterbody, 2, the intake duct turning part, 3, the intake duct head, 4, the valve guide bushing supporting boss.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, intake duct afterbody 1 shorten length 3-5mm, the radius R of intake duct turning part 2 inner surfaces increases 10-15%, the transition of intake duct inner wall shape is steadily slick and sly, does not have suddenly to change, and does not promptly influence intake vortex strength, can effectively reduce intake resistance again, the attached sectional area that advances of valve guide bushing and support rim thereof 4 to reduce the wake flow phenomenon that is produced by valve guide bushing and conduit boss, reduces flow losses greater than turning part 2 sectional area 5-10%.The longitudinal size L in suction tude cross section, valve guide bushing support rim place increases 3-5mm.Both increase flow area, helped producing intake swirl again.
Claims (1)
1, a kind of straight spray single cylinder diesel cylinder head intake duct, by intake duct afterbody (1), intake duct turning part (2), intake duct head (3) and valve catheter support boss (4) constitute, it is characterized in that, the length of intake duct afterbody (1) shortens 3-5mm, and the radius R of intake duct turning part (2) inner surface increases 10-20%, and the transition of intake duct inner wall shape is steadily slick and sly, do not have suddenly and change valve guide bushing supporting boss (4) sectional area ratio intake duct turning part (2) sectional area increase 5-10%; The longitudinal size L in the intake duct cross section that valve guide bushing supporting boss (4) is located increases 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200703313U CN200955453Y (en) | 2006-03-14 | 2006-03-14 | Direct-jetting single-cylinder diesel engine cylinder head air-intake duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200703313U CN200955453Y (en) | 2006-03-14 | 2006-03-14 | Direct-jetting single-cylinder diesel engine cylinder head air-intake duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200955453Y true CN200955453Y (en) | 2007-10-03 |
Family
ID=38774038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200703313U Expired - Fee Related CN200955453Y (en) | 2006-03-14 | 2006-03-14 | Direct-jetting single-cylinder diesel engine cylinder head air-intake duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200955453Y (en) |
-
2006
- 2006-03-14 CN CNU2006200703313U patent/CN200955453Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071003 Termination date: 20100314 |