CN203717148U - Four-valve cylinder cover for four-cylinder diesel engine - Google Patents
Four-valve cylinder cover for four-cylinder diesel engine Download PDFInfo
- Publication number
- CN203717148U CN203717148U CN201420065460.8U CN201420065460U CN203717148U CN 203717148 U CN203717148 U CN 203717148U CN 201420065460 U CN201420065460 U CN 201420065460U CN 203717148 U CN203717148 U CN 203717148U
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- Prior art keywords
- water jacket
- cylinder
- tangential
- air inlet
- cylinder cover
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- Expired - Fee Related
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Abstract
The utility model discloses a four-valve cylinder cover for a four-cylinder diesel engine. The four-valve cylinder cover comprises a cylinder cover body, a spiral air inlet passage, a tangential air inlet passage, an exhaust passage, upper-layer and lower-layer water jackets, a camshaft mounting hole and an oil atomizer mounting hole; the cylinder cover body is provided with the spiral air inlet passage, the tangential air inlet passage, the exhaust passage and the oil atomizer mounting hole for each cylinder; the upper-layer and lower-layer water jackets are arranged in the cylinder cover body; the camshaft mounting hole is longitudinally formed in the air inlet side of the cylinder cover body; the spiral air inlet passage is 60.4+/-1mm in length; the tangential air inlet passage is 93.1+/-1mm in length; a spiral air inlet is 20-21mm in width and 38-39 in height; a tangential air inlet is 20-21mm in width and 38-40mm in height; a center distance between the spiral air inlet and the tangential air inlet is 38-40mm; a center distance between a spiral air outlet and a tangential air outlet is 46.25mm; the upper-layer water jacket is 31mm in height; the lower-layer water jacket is 22mm in height; a middle partition between the upper-layer water jacket and the lower-layer water jacket is 6mm in thickness.
Description
Technical field
The utility model belongs to field of internal combustion engine, relates to a kind of cylinder cover for diesel engine, relates in particular to a kind of four-cylinder diesel engine Four-valve cylinder head.
background technique
At present, countries in the world are more and more stricter for the emission request of vehicle, and client is also more and more higher to the requirement of the supporting engine fuel consumption of the vehicle of oneself simultaneously.The quality of diesel engine is closely connected with the design of cylinder head, and Four-valve cylinder head can effectively improve fuel-oil atmozation in cylinder of diesel engine, thereby reduces the discharge of harmful gas, improves fuel economy.Cooling and the layout of four valves and the design of air flue of controlling strength of vortex, uninterrupted and the oil nozzle of two intake ducts formation of the each cylinder of four-valve diesel engine are closely related, and this is also the key technology of Four-valve cylinder head design.And the design of the cylinder cover for diesel engine of current domestic maturation, be substantially all to adopt every cylinder two valves one to enter a row, although simple in structure, but charge flow rate is limited and oil sprayer needs biasing, cause oily fast length inequality, mixed gas mixes inequality and oil sprayer heat load inequality, causes that oil inflame efficiency is lower, noxious emission is also difficult to reach existing emission regulation demands.The simultaneously cooling basic employing cross flow form of the cooling especially oil sprayer of cylinder head inside, is difficult to effectively ensure the flow of oil nozzle surrounding cooling water, and long-time large load operation is also difficult to ensure the reliability of oil nozzle, directly affects the normal use of diesel engine.
Model utility content
The purpose of this utility model is to provide a kind of low emission four-cylinder diesel engine Four-valve cylinder head rational in infrastructure.
The technical solution of the utility model is: four-cylinder diesel engine Four-valve cylinder head, comprising: cylinder cover, spiral inlet duct, tangential inlet duct, air outlet flue, upper strata water jacket, lower floor's water jacket, camshaft mounting hole, mounting hole of oil sprayer; On cylinder cover, every cylinder is arranged a spiral inlet duct, a tangential inlet duct, an air outlet flue and a mounting hole of oil sprayer; In cylinder cover inner chamber, be furnished with upper strata water jacket and lower floor's water jacket; Camshaft mounting hole is longitudinally arranged on cylinder cover upper end air inlet side.
Spiral inlet duct length is 60.4 ± 1mm; Tangential inlet duct length is 93.1 ± 1mm; Spirally inlet air mouth width is 20～21mm, and spirally inlet air open height is 38～39mm; Tangential admission mouth width is 20～21mm, and tangential admission open height is 38～40mm; The centre distance of spirally inlet air mouth and tangential admission mouth is 38～40mm; Spirally inlet air outlet is 46.25mm with the centre distance of tangential admission outlet; Upper strata water jacket height is 31mm; Lower floor's water jacket height is 22mm; Upper strata water jacket and lower floor's water jacket intermediate clapboard thickness are 6mm.
adopt the utility model can reach following beneficial effect: this Four-valve cylinder head body inlet design, can, under equal cylinder diameter, the aisle spare of inlet and outlet door be increased more than 20%, effectively improve charge flow rate in cylinder, optimize in-cylinder combustion, improve fuel economy.Adopt the design of upper and lower layer water jacket, ensured cooling and effective integral rigidity that improves cylinder cover of cylinder head inside.Meanwhile, camshaft is arranged in cylinder head, has optimized valve chain structure, effectively improves its reliability and accuracy to valve control.
Brief description of the drawings
Fig. 1 is the perspective view of the utility model four-cylinder diesel engine Four-valve cylinder head;
Fig. 2 is tangential inlet duct, spiral inlet duct and the air discharging structure schematic diagram of the utility model four-cylinder diesel engine Four-valve cylinder head;
Fig. 3 is tangential inlet duct and the helical duct intake mouth schematic diagram of the utility model four-cylinder diesel engine Four-valve cylinder head;
Fig. 4 is the upper and lower layer jacket structure for water schematic diagram of the utility model four-cylinder diesel engine Four-valve cylinder head.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.As shown in Fig. 1 ~ 4, four-cylinder diesel engine Four-valve cylinder head, comprising: cylinder cover 1, spiral inlet duct 2, tangential inlet duct 3, air outlet flue 4, upper strata water jacket 5 and lower floor's water jacket 6, camshaft mounting hole 7, mounting hole of oil sprayer 8; On cylinder cover 1, every cylinder is arranged 3, one air outlet flues 4 of 2, one tangential inlet ducts of a spiral inlet duct and a mounting hole of oil sprayer 8;
In cylinder cover 1 inner chamber, be furnished with upper strata water jacket 5 and lower floor's water jacket 6; Camshaft mounting hole 7 is longitudinally arranged on cylinder cover 1 upper end air inlet side.
Spiral inlet duct 2 length L 1 are 60.4 ± 1mm; Tangential inlet duct 3 length L 2 are 93.1 ± 1mm; Spirally inlet air mouth width B 1 is 20～21mm, and spirally inlet air open height H1 is 38～39mm; Tangential admission mouth width B 2 is 20～21mm, and tangential admission open height H2 is 38～40mm; The centre distance D of spirally inlet air mouth and tangential admission mouth is 38～40mm; Spirally inlet air outlet is 46.25mm with the centre distance A of tangential admission outlet.
Upper strata water jacket height C1 is 31mm; Lower floor's water jacket height is 22mm; Upper strata water jacket and lower floor's water jacket intermediate clapboard thickness T are 6mm.
The utility model calculates by CFD flow field analysis, and reasonable Arrangement water channel improves cooling effect, ensures cooling evenly reliable; Then by FEA structural analysis, optimize cylinder cover structure, guarantee that there are sufficient intensity and rigidity in each position, and can effectively reduce noise and vibration.
The every cylinder end face of four-cylinder diesel engine Four-valve cylinder head body is arranged a spirally inlet air mouth and tangential admission mouth, can effectively control flow parameter, reduce interference in air flow, effectively promote the formation of mixed gas, improve combustion performance, make four valve DI Diesel Engine there is more superior torque characteristics and emission performance.
Claims (2)
1. four-cylinder diesel engine Four-valve cylinder head, comprising: cylinder cover (1), spiral inlet duct (2), tangential inlet duct (3), air outlet flue (4), upper strata water jacket (5) and lower floor's water jacket (6), camshaft mounting hole (7), mounting hole of oil sprayer (8); It is characterized in that: arrange a spiral inlet duct (2), a tangential inlet duct (3), an air outlet flue (4) and a mounting hole of oil sprayer (8) at the upper every cylinder of cylinder cover (1); In cylinder cover (1) inner chamber, be furnished with upper strata water jacket (5) and lower floor's water jacket (6); Camshaft mounting hole (7) is longitudinally arranged on cylinder cover (1) upper end air inlet side.
2. four-cylinder diesel engine Four-valve cylinder head according to claim 1, is characterized in that: spiral inlet duct (2) length (L1) is 60.4 ± 1mm; Tangential inlet duct (3) length (L2) is 93.1 ± 1mm; Spirally inlet air mouth width (B1) is 20～21mm, and spirally inlet air open height (H1) is 38～39mm; Tangential admission mouth width (B2) is 20～21mm, and tangential admission open height (H2) is 38～40mm; The centre distance (D) of spirally inlet air mouth and tangential admission mouth is 38～40mm; Spirally inlet air outlet is 46.25mm with the centre distance (A) of tangential admission outlet; Upper strata water jacket (5) highly (C1) is 31mm; Lower floor's water jacket (6) highly (C) is 22mm; Upper strata water jacket (5) is 6mm with lower floor's water jacket (6) intermediate clapboard thickness (T).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065460.8U CN203717148U (en) | 2014-02-14 | 2014-02-14 | Four-valve cylinder cover for four-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065460.8U CN203717148U (en) | 2014-02-14 | 2014-02-14 | Four-valve cylinder cover for four-cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717148U true CN203717148U (en) | 2014-07-16 |
Family
ID=51156310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065460.8U Expired - Fee Related CN203717148U (en) | 2014-02-14 | 2014-02-14 | Four-valve cylinder cover for four-cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717148U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269416A (en) * | 2017-07-10 | 2017-10-20 | 河南柴油机重工有限责任公司 | A kind of Design of High Pressure Common Rail Diesel Engine cylinder head |
| CN109869238A (en) * | 2017-12-04 | 2019-06-11 | 丰田自动车株式会社 | Cylinder cover |
| CN111692008A (en) * | 2020-06-24 | 2020-09-22 | 东风商用车有限公司 | Cylinder cover |
-
2014
- 2014-02-14 CN CN201420065460.8U patent/CN203717148U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269416A (en) * | 2017-07-10 | 2017-10-20 | 河南柴油机重工有限责任公司 | A kind of Design of High Pressure Common Rail Diesel Engine cylinder head |
| CN109869238A (en) * | 2017-12-04 | 2019-06-11 | 丰田自动车株式会社 | Cylinder cover |
| CN109869238B (en) * | 2017-12-04 | 2021-08-10 | 丰田自动车株式会社 | Cylinder cover |
| CN111692008A (en) * | 2020-06-24 | 2020-09-22 | 东风商用车有限公司 | Cylinder cover |
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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: 20140716 Termination date: 20220214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |