CN204299715U - A kind of diesel engine cylinder cover - Google Patents
A kind of diesel engine cylinder cover Download PDFInfo
- Publication number
- CN204299715U CN204299715U CN201420731730.4U CN201420731730U CN204299715U CN 204299715 U CN204299715 U CN 204299715U CN 201420731730 U CN201420731730 U CN 201420731730U CN 204299715 U CN204299715 U CN 204299715U
- Authority
- CN
- China
- Prior art keywords
- cylinder cap
- vacuum pump
- mounting hole
- fuel pump
- air flue
- 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of diesel engine cylinder cover, comprise cylinder cap, described cylinder cap rear end has vacuum pump mounting hole and fuel pump mounting hole, vacuum pump and fuel pump is separately installed with in described vacuum pump mounting hole and fuel pump mounting hole, described vacuum pump and fuel pump one end are fixedly connected with exhaust cam shaft and admission cam shaft respectively, described cylinder cap is provided with water jacket, described water jacket is provided with cylinder cap water outlet, intake duct and air outlet flue, described intake duct and air outlet flue lay respectively at cylinder cap water outlet both sides, described cylinder cap leaves air flue, described air flue comprises helical intake and tangential air flue.This diesel engine cylinder cap, by cylinder cap rear end, vacuum pump and fuel pump are installed, that this motor compactedness is highly improved, and the horizontal demand of motor can be adapted to, simultaneously, cylinder cap is opened the mounting hole of vacuum pump and fuel pump, reduces the material of cylinder cap, be conducive to the light-weight design of cylinder cap.
Description
Technical field
The utility model relates to Diesel Engine Technique Field, is specially a kind of diesel engine cylinder cover.
Background technique
Current new model requires the arrangement requirement adopting transverse engine, and need to redesign the water jacket of motor, water outlet is arranged into rear end, to meet arrangement requirement.Meanwhile, in order to adapt to the requirement of the higher pressure of explosion of new engine, the fire power face thickness of cylinder cap is increased; In order to meet stricter emission request, optimize intake duct further, the swirl rate of suitable reduction intake duct.Consider compactedness design simultaneously, vacuum pump and fuel pump are installed on cylinder cap, utilize overhead camshaft to drive.
Model utility content
The purpose of this utility model is to provide a kind of diesel engine cylinder cover, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme: a kind of diesel engine cylinder cover, comprise cylinder cap, described cylinder cap rear end has vacuum pump mounting hole and fuel pump mounting hole, vacuum pump and fuel pump is separately installed with in described vacuum pump mounting hole and fuel pump mounting hole, described vacuum pump and fuel pump one end are fixedly connected with exhaust cam shaft and admission cam shaft respectively, described cylinder cap is provided with water jacket, described water jacket is provided with cylinder cap water outlet, intake duct and air outlet flue, described intake duct and air outlet flue lay respectively at cylinder cap water outlet both sides, described cylinder cap leaves air flue, described air flue comprises helical intake and tangential air flue.
Preferably, described helical intake and tangential air flue have four respectively, and helical intake and tangential air flue are spaced.
Preferably, described cylinder cap water outlet is positioned at cylinder cap rear end.
Compared with prior art, the beneficial effects of the utility model are: this diesel engine cylinder cap, by cylinder cap rear end, vacuum pump and fuel pump are installed, that this motor compactedness is highly improved, and the horizontal demand of motor can be adapted to, simultaneously, cylinder cap is opened the mounting hole of vacuum pump and fuel pump, reduce the material of cylinder cap, be conducive to the light-weight design of cylinder cap, the every cylinder air flue of this engine cylinder cover all comprises helical intake and tangential air flue, by the cooperation of helical intake and tangential air flue, coordinate in-cylinder direct injection simultaneously, fuel oil and air inlet are fully mixed, this cylinder cap adopts rear end water outlet design, simultaneously when designing water jacket, by CFD analytical calculation, the water flow of suitable increasing air outlet flue, to ensure overall flow field and the uniform distribution of temperature field of cylinder cap.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model inlet channel cross-sectional figure;
Fig. 3 is the utility model water jacket sectional view.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-3, the utility model provides a kind of technological scheme: a kind of diesel engine cylinder cover, comprise cylinder cap 1, cylinder cap 1 rear end has vacuum pump mounting hole 2 and fuel pump mounting hole 3, vacuum pump and fuel pump is separately installed with in vacuum pump mounting hole 2 and fuel pump mounting hole 3, vacuum pump and fuel pump one end are fixedly connected with exhaust cam shaft and admission cam shaft respectively, cylinder cap 1 is provided with water jacket, water jacket is provided with cylinder cap water outlet 6, intake duct 7 and air outlet flue 8, the increasing that air outlet flue 8 is suitable, cylinder cap water outlet 6 is positioned at cylinder cap 1 rear end, intake duct 7 and air outlet flue 8 lay respectively at cylinder cap water outlet 6 both sides, cylinder cap 1 leaves air flue, air flue comprises helical intake 4 and tangential air flue 5, helical intake 4 and tangential air flue 5 have four respectively, and helical intake 4 and tangential air flue 5 are spaced.
Working principle: vacuum pump and high pressure fuel pump integrated installation are on cylinder cap 1, to reach compactedness requirement, adopt the combination intake manifold of helical intake 4 and tangential air flue 5, when guaranteed flow, eddy current ratio reduces by 10%, by the cooperation of air flue design and direct injection technology, reduce the dissipation of granule oil droplet, ensure that motor had both obtained excellent in economic efficiency and power character, reduce again the generation of noxious emission, to reach best design effect, new engine, pressure of explosion is promoted largely, in order to ensure under higher pressure of explosion, the fire power face of cylinder cap 1 can also with cylinder pad, cylinder body forms sealing.Design is optimized to the water jacket of motor, mainly strengthens the flow design that cylinder cover water jacket is surveyed in exhaust; Meanwhile, wall thickness increase about 10% is surveyed, to promote the structural strength of cylinder cap 1 in the exhaust of cylinder cap 1 fire power face.Open mounting hole at the ear end face of cylinder cap 1, air inlet side drives fuel pump by admission cam shaft, and exhaust is surveyed and driven vacuum pump by exhaust cam shaft.By cylinder cap 1 rear end, vacuum pump and fuel pump are installed, are that this motor compactedness is highly improved, and the horizontal demand of motor can be adapted to.Meanwhile, cylinder cap 1 is opened vacuum pump mounting hole 2 and fuel pump mounting hole 3, reduce 1 material of cylinder cap, be conducive to the light-weight design of cylinder cap 1.The every cylinder air flue of this engine cylinder cover 1 all comprises helical intake 4 and tangential air flue 5, by the cooperation of helical intake 4 and tangential air flue 5, coordinates in-cylinder direct injection simultaneously, fuel oil and air inlet are fully mixed; Just tested by the swirl rate of combustion analysis and cylinder cap 1 in design, draw best swirl rate coefficient, make this cylinder cap 1 can meet the emissions requirements of four/state of state five.This cylinder cap adopts rear end water outlet design, and simultaneously when designing water jacket, by CFD analytical calculation, the water flow of suitable increasing air outlet flue 8, to ensure overall flow field and the uniform distribution of temperature field of cylinder cap 1.By cooling liquid cooling cylinder cap 1 metallic material, ensure that cylinder cap 1 metal is unlikely to overheated, guarantee that cylinder cap 1 meets the usage requirement of motor.Meanwhile, by revising the thickness of water jacket, the wall thickness of suitable thickening cylinder cap 1 fire power face, to strengthen the bulk strength of cylinder cap 1.In order to better meet requirement of strength, this cylinder cap 1 requires to carry out special thermal treatment.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (3)
1. a diesel engine cylinder cover, comprise cylinder cap, it is characterized in that: described cylinder cap rear end has vacuum pump mounting hole and fuel pump mounting hole, vacuum pump and fuel pump is separately installed with in described vacuum pump mounting hole and fuel pump mounting hole, described vacuum pump and fuel pump one end are fixedly connected with exhaust cam shaft and admission cam shaft respectively, described cylinder cap is provided with water jacket, described water jacket is provided with cylinder cap water outlet, intake duct and air outlet flue, described intake duct and air outlet flue lay respectively at cylinder cap water outlet both sides, described cylinder cap leaves air flue, described air flue comprises helical intake and tangential air flue.
2. a kind of diesel engine cylinder cover according to claim 1, it is characterized in that: described helical intake and tangential air flue have four respectively, and helical intake and tangential air flue is spaced.
3. a kind of diesel engine cylinder cover according to claim 1, is characterized in that: described cylinder cap water outlet is positioned at cylinder cap rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731730.4U CN204299715U (en) | 2014-12-01 | 2014-12-01 | A kind of diesel engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731730.4U CN204299715U (en) | 2014-12-01 | 2014-12-01 | A kind of diesel engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299715U true CN204299715U (en) | 2015-04-29 |
Family
ID=53105260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420731730.4U Expired - Fee Related CN204299715U (en) | 2014-12-01 | 2014-12-01 | A kind of diesel engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299715U (en) |
-
2014
- 2014-12-01 CN CN201420731730.4U patent/CN204299715U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20201201 |