CN106224115B - A kind of cylinder cover for diesel engine - Google Patents
A kind of cylinder cover for diesel engine Download PDFInfo
- Publication number
- CN106224115B CN106224115B CN201610752910.4A CN201610752910A CN106224115B CN 106224115 B CN106224115 B CN 106224115B CN 201610752910 A CN201610752910 A CN 201610752910A CN 106224115 B CN106224115 B CN 106224115B
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- cylinder cover
- ridge area
- inlet valve
- oil sprayer
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to Diesel Engine Technique Fields, disclose a kind of cylinder cover for diesel engine, it is equipped with a pair of of inlet valve and a pair of of exhaust valve, ridge area is set between the adjacent inlet valve and exhaust valve, ridge area is set between two exhaust valves, it is equipped with cooling duct in the ridge area, does not set ridge area between two inlet valves.Behind ridge area of the present invention by cancelling narrow air inlet side, the temperature uniformity of entire cylinder head bottom plate is higher, and temperature gradient is small；Sand core of water jacket no setting is required narrow cooling duct, so that intensity is higher, it is easier to tissue production.
Description
Technical field
The present invention relates to Diesel Engine Technique Fields, more particularly to a kind of cylinder cover for diesel engine.
Background technique
Cylinder head is the important component of engine, and it acts as sealing gas, and combustion space is collectively formed with piston.Work
Environment is extremely severe, due to being acted on by high-temperature high-pressure fuel gas, causes thermal stress and mechanical stress very big.Cooling jacket is gas
The structure space of the cooling water circulation formed in cylinder cap by entity cast iron inner surface, heat is taken away when cooling water flows through, is reduced
Cylinder head surface of solids temperature.
Cylinder cover for diesel engine bottom plate inlet valve near zone temperature is (200~250) DEG C, and exhaust valve regional temperature is (350
~450) DEG C, the two temperature difference and temperature gradient are big, lead to biggish thermal stress and deformation, and cylinder head is easy to produce crackle；Simultaneously
The cooling duct area of conventional admission ridge area is small, and sand core is easily broken off in production.
As shown in Figure 1, the conventional design of 1 lower layer's cooling jacket of Four-valve diesel engine cylinder head of is between inlet valve 2 at present
There is narrow cooling water stream channel, while being evenly equipped with cooling duct around oil sprayer bushing, because of cylinder head inlet valve 2 and exhaust valve
The temperature difference in 3 regions is about 200 DEG C, and the biggish temperature difference is easy to produce biggish thermal stress and assymmetrical deformation, on the other hand, air inlet
The sectional area very little of 4 cooling duct of ridge area while be easy to causeing sand core to be broken, is also easy to cause sintering scab, sand removal is tired
Difficulty leads to rejection rate and the production cost increases.In addition, 360 ° of cooling jacket is arranged around oil sprayer bushing, due to air inlet side
Temperature is low, and the side does not need excessive cooling in practice, all lays the course and causes unnecessary waste.
Summary of the invention
(1) technical problems to be solved
It is small the technical problem to be solved by the present invention is to how solve air inlet ridge area cooling duct in the prior art, it is easy to make
It is broken at sand core, is also easy to cause sintering scab, the problem of sand removal difficulty.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of cylinder cover for diesel engine, are equipped with a pair of of inlet valve and one
To exhaust valve, ridge area is set between the adjacent inlet valve and exhaust valve, ridge area is set between two exhaust valves, institute
It states and is equipped with cooling duct in ridge area, do not set ridge area between two inlet valves.
Wherein, oil sprayer bushing is equipped in the region that a pair of inlet valve and a pair of exhaust valve surround to install
Hole.
Wherein, the oil sprayer bushing mounting hole is surrounded by cooling duct.
Wherein, cooling duct is not set at the inlet valve around the oil sprayer bushing mounting hole.
Wherein, the oil sprayer bushing mounting hole is located at the inlet valve lateral edge it is axially arranged with opening, the fuel injector
Bushing mounting holes are connected to by the opening with a pair of inlet valve.
Wherein, the cross section semicircular in shape of the oil sprayer bushing mounting hole.
Wherein, the cylinder cover for diesel engine is made up of casting；The cooling is cast out by the way that sand core of water jacket is arranged in it
Channel.
(3) beneficial effect
Compared with prior art, the invention has the following advantages that
A kind of cylinder cover for diesel engine provided by the invention, in the structure basis of existing diesel cylinder head, two into
Ridge area is not set between valve, that is, the ridge area disconnected between two inlet valves is not required to since the ridge area temperature of air inlet side is low
Stronger cooling is carried out, behind the ridge area for cancelling narrow air inlet side, the temperature uniformity of entire cylinder head bottom plate is higher, temperature
It is smaller to spend gradient；It is additionally useful for sand core of water jacket no setting is required the narrow air inlet side cooling duct part of manufacture cooling duct, from
And the intensity of sand core of water jacket is higher, it is easier to tissue production.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of cylinder cover for diesel engine of the prior art；
Fig. 2 is a kind of structural schematic diagram of cylinder cover for diesel engine of the present invention；
Fig. 3 is the structural schematic diagram of another cylinder cover for diesel engine of the present invention；
Fig. 4 is the structural schematic diagram of the third cylinder cover for diesel engine of the invention；
In figure: 1: cylinder head；2: inlet valve；3: exhaust valve；4: ridge area；5: oil sprayer bushing mounting hole；6: cooling logical
Road；7: open.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Fig. 2, being a kind of cylinder cover for diesel engine provided by the invention, it is equipped with a pair of of inlet valve 2 and a pair of of exhaust
Door 3 is arranged ridge area 4, ridge area 4, institute is arranged between two exhaust valves 3 between the adjacent inlet valve 2 and exhaust valve 3
It states and is equipped with cooling duct in ridge area 4, cooling water is passed through into cooling duct, to reduce the temperature of inlet and outlet door, described in two
Ridge area 4 is not set between inlet valve 2, since 4 temperature of ridge area of air inlet side is low, does not need to carry out stronger cooling, cancel narrow
Behind the ridge area 4 of narrow air inlet side, the temperature uniformity of entire cylinder head bottom plate is higher, and temperature gradient is smaller；It is additionally useful for making
The cooling duct part for making sand core of water jacket no setting is required the narrow air inlet side of cooling duct, so that the intensity of sand core of water jacket is more
It is high, it is easier to tissue production.
Pacify in addition, being located at and being equipped with oil sprayer bushing in the region that a pair of inlet valve 2 and a pair of exhaust valve 3 surround
Fill hole 5.As shown in Figure 2, it is generally the case that the oil sprayer bushing mounting hole 5 is surrounded by cooling duct 6, for cooling down
The surrounding of oil sprayer bushing mounting hole 5, i.e., the cooling oil sprayer bushing being mounted in oil sprayer bushing mounting hole 5.
Due to low close to 2 side temperature of inlet valve, the side does not need excessive cooling in practice, all arranges that cooling duct is made
At unnecessary waste, it is based on temperature uniformity management, as shown in figure 3, close to described around the oil sprayer bushing mounting hole 5
Cooling duct can not be set at inlet valve 2, to realize on-demand cooling, optimization design.
It oil sprayer bushing cooling duct can also be using another set-up mode, as shown in figure 4, the oil sprayer bushing is pacified
Dress hole 5 is located at 2 lateral edge of inlet valve, and it is axially arranged with opening 7, i.e., one for directly cancelling 5 hole wall of oil sprayer bushing mounting hole
Divide entity part, so that the oil sprayer bushing mounting hole 5 is connected to by described open 7 with a pair of inlet valve 2, to drop
The low manufacture difficulty of oil sprayer bushing cooling duct, it is same to realize cooling on demand, it is more advantageous to and improves cooling efficiency and temperature
The uniformity of distribution；As shown in figure 4, the cross section semicircular in shape of the oil sprayer bushing mounting hole 5, surrounding cooling duct
It is connected smoothly with the cooling duct near adjacent pair inlet valve 2, optimizes design, convenient for cooling oil sprayer bushing.
Wherein, the cylinder head is made up of casting；The cooling duct is cast out by the way that sand core of water jacket is arranged in it, because
This needs to guarantee the intensity of sand core of water jacket, keeps its not easy to break, can be fine by cancelling the ridge area between two inlet valves
The intensity of ground guarantee sand core of water jacket.
As can be seen from the above embodiments, the present invention cancels narrow air inlet ridge area by disconnecting air inlet side ridge area
Cooling duct advantageously reduces the production difficulty of cylinder head baseplate temp gradient and sand core of water jacket, and passes through control fuel injector lining
Set layering water cavity arrangement, controls the cooling duct section in the region according to actual needs, cooling efficiency and fuel injector lining can be improved
Cover circumferential temperature uniformity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of cylinder cover for diesel engine is equipped with a pair of of inlet valve and a pair of of exhaust valve, which is characterized in that the adjacent inlet valve
Ridge area is set between exhaust valve, ridge area is set between two exhaust valves, is equipped with cooling in all ridge areas
Channel does not set ridge area between two inlet valves.
2. cylinder cover for diesel engine according to claim 1, which is characterized in that be located at described in a pair of inlet valve and a pair
Oil sprayer bushing mounting hole is equipped in the region that exhaust valve surrounds.
3. cylinder cover for diesel engine according to claim 2, which is characterized in that the surrounding of the oil sprayer bushing mounting hole is set
There is cooling duct.
4. cylinder cover for diesel engine according to claim 2, which is characterized in that close around the oil sprayer bushing mounting hole
Cooling duct is not set at the inlet valve.
5. cylinder cover for diesel engine according to claim 2, which is characterized in that the oil sprayer bushing mounting hole is located at described
It is axially arranged with opening to inlet valve lateral edge, and the oil sprayer bushing mounting hole is connected by described open and a pair of inlet valve
It is logical.
6. cylinder cover for diesel engine according to claim 5, which is characterized in that the cross section of the oil sprayer bushing mounting hole
Semicircular in shape.
7. cylinder cover for diesel engine according to claim 1, which is characterized in that the cylinder cover for diesel engine passes through casting system
At；The cooling duct is cast out by the way that sand core of water jacket is arranged in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752910.4A CN106224115B (en) | 2016-08-29 | 2016-08-29 | A kind of cylinder cover for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752910.4A CN106224115B (en) | 2016-08-29 | 2016-08-29 | A kind of cylinder cover for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224115A CN106224115A (en) | 2016-12-14 |
| CN106224115B true CN106224115B (en) | 2018-12-14 |
Family
ID=58071190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610752910.4A Active CN106224115B (en) | 2016-08-29 | 2016-08-29 | A kind of cylinder cover for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106224115B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075591B (en) * | 2020-01-09 | 2022-03-04 | 中国重汽集团济南动力有限公司 | Cylinder cover water cavity assembly with bushing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203285557U (en) * | 2012-12-31 | 2013-11-13 | 潍柴动力股份有限公司 | Cylinder cap and engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9470176B2 (en) * | 2014-08-01 | 2016-10-18 | Ford Global Technologies, Llc | Bore bridge and cylinder cooling |
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2016
- 2016-08-29 CN CN201610752910.4A patent/CN106224115B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203285557U (en) * | 2012-12-31 | 2013-11-13 | 潍柴动力股份有限公司 | Cylinder cap and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106224115A (en) | 2016-12-14 |
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