CN106523177A - Novel cylinder cover of diesel engine - Google Patents
Novel cylinder cover of diesel engine Download PDFInfo
- Publication number
- CN106523177A CN106523177A CN201611119261.0A CN201611119261A CN106523177A CN 106523177 A CN106523177 A CN 106523177A CN 201611119261 A CN201611119261 A CN 201611119261A CN 106523177 A CN106523177 A CN 106523177A
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- China
- Prior art keywords
- water cavity
- cooling
- cylinder cover
- diesel engine
- annular
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Classifications
-
- 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
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
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- 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 invention relates to the field of diesel engines and discloses a novel cylinder cover of a diesel engine. The novel cylinder cover comprises a cylinder cover body and a cooling water cavity arranged in the cylinder cover body; the cooling water cavity comprises a basin-shaped upper water cavity and an annular lower water cavity; the annular lower water cavity is provided with a triangular cavity body protruding towards the axis direction of the cylinder cover along the radial direction; the basin-shaped upper water cavity communicates with the annular lower water cavity through a plug bush cooling cavity; and the cylinder cover wall corresponding to the lower part of the plug bush cooling cavity is petal-shaped, so that a petal-shaped cooling cavity is formed at the lower part of the plug bush cooling cavity. The novel cylinder cover disclosed by the invention is higher in structural strength and better in antiknock performance, and meanwhile, the cooling performance of each part is improved, so that the cylinder cover can bear a wider thermal stress variation range.
Description
Technical field
The present invention relates to diesel engine arts, more particularly to a kind of novel diesel engine cylinder cover.
Background technology
Cylinder head is the critical piece of diesel engine construction, for closing body upper, constitutes combustor with piston, cylinder jacket
Space, and ensure being smoothed out for diesel engine inlet and outlet process.Cylinder head is operationally not only by the pretension of fastening bolt
Power, also by the explosion pressure of cylinder interior gas.In addition, cylinder head is under high-temperature fuel gas effect, also subject to alternating thermal stress
Effect.This cylinder head is developed by former railway locomotive 240D diesel engines cylinder head, for new 240 serial diesel engine,
To meet market competition demand, new 240 diesel engine strengthening degree is higher, and power brings up to 2750kw by the 2200kw of original machine,
And explosion pressure also brings up to 180bar from 150bar, be to meet needs, thus newly the cylinder head of reinforcing journey be also required for it is larger
Degree.
The content of the invention
The technical problem to be solved is：For above-mentioned problem, there is provided a kind of structural strength more preferably,
The capability of antidetonance is more preferable, while the novel diesel engine cylinder cover that cooling performance is lifted.
The technical solution used in the present invention is as follows：A kind of novel diesel engine cylinder cover, including cylinder head body and be opened in
The intrinsic cooling water cavity of cylinder head, the cooling water cavity include basin shape upper water cavity and the lower water cavity of annular, the lower water cavity of the annular
With radially to the triangular cavity of cylinder head axis direction protrusion.
A kind of novel diesel engine cylinder cover of the present invention, the basin shape upper water cavity are cold by sleeve with the lower water cavity of annular
But chamber connection.
A kind of novel diesel engine cylinder cover of the present invention, the corresponding cylinder tegmental wall in the sleeve cooling chamber bottom are flower
Lobed so that petal cooling chamber is formed at the bottom of the sleeve cooling chamber.
A kind of novel diesel engine cylinder cover of the present invention, symmetrically opens up two connection institutes in the middle part of the sleeve cooling chamber
State the filling pipe end of basin shape upper water cavity.
A kind of novel diesel engine cylinder cover of the present invention, the bottom surface of the cylinder head body also set up two air inlets
With two steam vents, valve retainer is installed in the steam vent, is circumferentially formed thereon in the middle part of the valve retainer outer surface
Annular groove, the annular groove are connected with the lower water cavity of the annular and petal cooling chamber respectively.
A kind of novel diesel engine cylinder cover of the present invention, the annular groove is by processing on the cylinder head body
Two symmetrical inclineds, 45 ° of water holes connect with the lower water cavity of annular and petal cooling chamber.
A kind of novel diesel engine cylinder cover of the present invention, the cylinder head body also include gap bridge cooling duct, described
Gap bridge cooling duct is arranged in the corresponding housing of Crossing the bridge noodles between air inlet and steam vent, the gap bridge cooling duct two ends respectively with
The lower water cavity of the annular is connected with the top of petal cooling chamber.
It is provided between the lower water cavity of a kind of novel diesel engine cylinder cover of the present invention, the basin shape upper water cavity and annular
Chilled water modulation hole, the chilled water modulation hole position is below exhaust duct.
A kind of novel diesel engine cylinder cover of the present invention, offers 12 cooling waters in the cylinder head body bottom surface
Inlet opening, cooling water enter the annular lower water cavity from cylinder cooling chamber by the cooling water inlet opening.
A kind of novel diesel engine cylinder cover of the present invention, the end of the basin shape upper water cavity are additionally provided with exhaust duct cooling
Water cavity, the exhaust duct cooling water cavity are coated with the exhaust duct of the cylinder head body, and cooling water water outlet is arranged above exhaust duct
Hole.
Compared with prior art, having the beneficial effect that using above-mentioned technical proposal：By adopting above-mentioned technical proposal so that
More preferably, the capability of antidetonance more preferably, can bear the explosion pressure of 180bar to the novel cylinder cover structural strength of the present invention, meanwhile, carry
The cooling performance at each position is risen so that cylinder head can bear bigger thermal stress excursion.
Description of the drawings
Fig. 1 is axonometric chart of the present invention.
Fig. 2 is axonometric chart of the present invention two.
Fig. 3 is top view of the present invention.
Fig. 4 is A-A in Fig. 3 to sectional view.
Fig. 5 is the B-B direction sectional view in Fig. 4.
Fig. 6 is the partial sectional view in the present invention at air inlet, steam vent and mounting hole of oil sprayer.
Fig. 7 is the lower water cavity model of annular in the present invention.
Fig. 8 is basin shape upper water cavity model in the present invention.
Reference：1 is cylinder head body, and 2 is basin shape upper water cavity, and 3 are the lower water cavity of annular, and 4 is triangular cavity, and 5 are
Sleeve cooling cavities, 6 is petal cooling chamber, and 7 is filling pipe end, and 8 is air inlet, and 9 is steam vent, and 10 is valve retainer, and 11 are
Annular groove, 12 is water hole, and 13 is gap bridge cooling duct, and 14 is Crossing the bridge noodles, and 15 is chilled water modulation hole, and 16 is exhaust duct, 17
For cooling water inlet opening, 18 is exhaust duct cooling chamber, and 19 is cooling water apopore, and 20 is fuel injector sleeve, and 21 pacify for fuel injector
Dress hole, 22 is fire power face, and 23 is air intake duct, and 24 is top surface of cylinder cover, and 25 is spring base hole.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described further.
As shown in figures 1-8, a kind of novel diesel engine cylinder cover, including cylinder head body 1 and to be opened in cylinder head sheet internal
Cooling water cavity, air intake duct 23, exhaust duct 16, spring base hole 25, fuel injector sleeve 20, mounting hole of oil sprayer 21, the cooling
Water cavity includes basin shape upper water cavity 2 and the lower water cavity 3 of annular, and under the annular, water cavity has and radially protrudes to cylinder head axis direction
Triangular cavity 4.The power that the transmission of cylinder head bottom surface fire power face 22 comes up can be uniformly distributed in periphery by basin shape upper water cavity 2
Tub wall, tub wall are transferred force to around cylinder head body 1 again, and cylinder head bolt is exactly arranged around cylinder head（Do not show in figure
Go out）Position, this causes the bulk strength of cylinder head to be strengthened so that cylinder head when the pressure of 180bar in cylinder is born,
Bulk deformation is less；And the lower water cavity 3 of annular has the triangular cavity 4 of protrusion, the triangular cavity of 4 protrusions is designed here as
4, the fire power face 22 of the lower 3 directly contact cylinder head bottom surface of water cavity of annular, its pressure for bearing and thermal stress change than larger, herein
4 triangular cavities 4 strengthen the structural strength of overall fire power face 22 because in structure, triangle is most stable of
Shape.Meanwhile, basin shape upper water cavity 2 and the lower water cavity 3 of annular cause the film-cooled heat of whole cylinder head bigger, further enhancing whole
Individual cylinder head bears the ability of pressure and thermal stress change, and both water cavity shapes are relatively regular, also more convenient in casting.
The basin shape upper water cavity 2 is connected by sleeve cooling chamber 5 with the lower water cavity 3 of annular.Sleeve cooling chamber 5 is set herein,
In the case where basin shape upper water cavity 2 and annular is connected while water cavity 3, to fuel injector（Not shown in figure）It is cold that periphery has been also carried out pressure
But, improve the working environment around fuel injector.
The corresponding cylinder tegmental wall in 5 bottom of sleeve cooling chamber is petal so that the bottom shape of the sleeve cooling chamber 5
Into petal cooling chamber 6.Arrange different from simple cylinder common at present herein, but take full advantage of cylinder head valves bore
Between space, while valve seat orifice edged intensity is not reduced, effectively increase fuel injector sleeve 20 and mounting hole of oil sprayer
Gap between 21, after can causing life-time service, this space is not easy blocking, and cooling water circulation is unobstructed.
Two filling pipe ends 7 that connect the basin shape upper water cavity 2 are opened up in the middle part of the sleeve cooling chamber 5 symmetrically so that from ring
Under shape, the cooling water of water cavity 3 symmetrically enters basin shape upper water cavity 2 through sleeve cooling chamber 5 and then from two filling pipe ends 7 so that
Upper water is more symmetrically.
The bottom surface of the cylinder head body 1 also sets up two air inlets 8 and two steam vents 9, installs in the steam vent 9
There is valve retainer 10, in the middle part of 10 outer surface of the valve retainer, be circumferentially formed thereon annular groove 11, the annular groove 11
Connect with the lower water cavity 3 of the annular and petal cooling chamber 6 respectively, the annular groove 11 is by the cylinder head body 1
Two symmetrical inclineds, 45 ° of water holes 12 of processing are connected with the lower water cavity 3 of the annular and petal cooling chamber 6, water hole 12 herein
Totally 4.9 working condition of steam vent is remote severe in air inlet 8, and this is in steam vent 9 installs valve retainer 10, and in valve seating
Annular groove 11 is formed on circle 10, equivalent to a ring-type cooling chamber is defined, 9 peripheral part of steam vent is carried out forcing cold
But, improve its working environment.
The cylinder head body 1 also includes gap bridge cooling duct 13, and the gap bridge cooling duct 13 is arranged on air inlet 8 and aerofluxuss
Between hole 9 in 14 corresponding housing of Crossing the bridge noodles, 13 two ends of gap bridge cooling duct respectively with the lower water cavity 3 of the annular and petal
The top connection of cooling chamber 6.When cooling water enters petal cooling chamber 6 through bridge cooling duct 13, due to 4 gap bridge cooling ducts
13 tops for being connected to petal cooling chamber 6, when this causes cooling water to enter petal cooling chamber 6, have bigger buffering empty
Between, the situation that cooling water is drastically turned to herein slows down, can be with the progressive sleeve cooling of guide cooling water in the shape plus petal
5 top of chamber, further buffering cooling water flow velocity, effectively reduces because of the bubble for rapidly producing, and bubble is to cause parts cavitation pitting
Main reason, damage of the cavitation pitting to parts can effectively be reduced by this set, its service life is lifted.
Chilled water modulation hole 15, the chilled water modulation hole are provided between the basin shape upper water cavity 2 and the lower water cavity 3 of annular
15 are located at below exhaust duct 16.Chilled water modulation hole 15, connection basin shape upper water cavity 2 and the lower water cavity 3 of annular are arranged such herein, can
In time by water cavity under annular 3 because the bubble that flow velocity and high temperature are produced discharges into basin shape upper water cavity 2, it is to avoid aeration cooling effect
Really.The gap bridge of cylinder head is that install interference power, the diesel engine of valve seat are run at the concentration of seasonal epidemic pathogens valve knock alternating force and high temperature, is
Cylinder head more fragility where, easily cause crackle, cooling herein is extremely important, can neither undercooling, can not be cold
Not enough, by the chilled water modulation hole for arranging suitable size, the cooling water inflow that can pass through gap bridge is suitable, it is ensured that gap bridge
Cooling effect.Meanwhile, by the lower section that chilled water modulation hole 15 is arranged on exhaust duct 16, script cooling effect can be caused bad
16 bottom of exhaust duct obtain good cooling effect.
12 cooling water inlet openings 17 are offered in 1 bottom surface of cylinder head body, and 12 cooling water inlet openings 17 are in
Circumference uniform distribution, cooling water pass through cooling chamber of the cooling water inlet opening 17 from cylinder（Not shown in figure）Into under the annular
Water cavity 3.Exclude it is conventional cross the water jacket type of cooling, herein using punching cooling by the way of so that entirely the structure of cylinder head is more
Step up to gather, further increase structural strength.
The end of the basin shape upper water cavity 2 is additionally provided with exhaust duct cooling water cavity 18, and the exhaust duct cooling water cavity 18 is coated
The exhaust duct 18 of the cylinder head body 1, cooling water apopore 19 is set above exhaust duct 16.Due to flowing inside exhaust duct 16
Logical is high-temperature flue gas, causes the bulk temperature of exhaust duct 16 higher, arranges the exhaust duct cooling chamber around exhaust duct 16 herein
18, while cooling water apopore 19 is arranged on above exhaust duct 16, herein with the heat exchange of exhaust duct 16 after cooling water temperature compared with
Height, therefore its flow velocity is also very fast, so as to accelerate the speed that cooling water is flowed out from basin shape upper water cavity 2 so that whole cooling water
Cooling procedure is more unobstructed so that the cooling effect of whole cylinder head is more preferable.
In above-mentioned specific embodiment, cooling water general flow is：Cooling water is entered by 12 cooling water inlet openings 17
The lower water cavity 3 of annular, then into basin shape upper water cavity 2, simultaneously Jing is cooled down Jing sleeves cooling chamber 5 to finally enter exhaust duct cooling water cavity 18
Water apopore 19 leaves cylinder head.
The invention is not limited in aforesaid specific embodiment.The present invention is expanded to and any is disclosed in this manual
New feature or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.If this
Art personnel, the unsubstantiality done in the spirit without departing from the present invention are altered or modified, and should all belong to power of the present invention
The claimed scope of profit.
Claims (10)
1. a kind of novel diesel engine cylinder cover, including cylinder head body（1）And it is opened in cylinder head body（1）Interior cooling water
Chamber, it is characterised in that：The cooling water cavity includes basin shape upper water cavity（2）With water cavity under annular（3）, the lower water cavity of the annular（3）
With radially to the triangular cavity of cylinder head axis direction protrusion（4）.
2. a kind of novel diesel engine cylinder cover according to claim 1, it is characterised in that：The basin shape upper water cavity（2）With
The lower water cavity of annular（3）By sleeve cooling chamber（5）Connection.
3. a kind of novel diesel engine cylinder cover according to claim 2, it is characterised in that：The sleeve cooling chamber（5）Under
The corresponding cylinder tegmental wall in portion is petal so that petal cooling chamber is formed at the bottom of the sleeve cooling chamber（6）.
4. a kind of novel diesel engine cylinder cover according to claim 3, it is characterised in that：The sleeve cooling chamber（5）In
Portion symmetrically opens up two filling pipe ends for connecting the basin shape upper water cavity（7）.
5. a kind of novel diesel engine cylinder cover according to claim 4, it is characterised in that：The cylinder head body（1）'s
Bottom surface also sets up two air inlets（8）With two steam vents（9）, valve retainer is installed in the steam vent（10）, the gas
Seat ring（10）Annular groove is circumferentially formed thereon in the middle part of outer surface（11）, the annular groove（11）Respectively with the annular
Lower water cavity（3）With petal cooling chamber（6）Connection.
6. a kind of novel diesel engine cylinder cover according to claim 5, it is characterised in that：The annular groove（11）Pass through
The cylinder head body（1）Two symmetrical inclineds, 45 ° of water holes of upper processing（12）With the lower water cavity of the annular（3）With petal cooling
Chamber（6）Connection.
7. a kind of novel diesel engine cylinder cover according to claim 6, it is characterised in that：The cylinder head body（1）Also
Including gap bridge cooling duct（13）, the gap bridge cooling duct（13）It is arranged on air inlet（8）And steam vent（9）Between Crossing the bridge noodles（14）
In corresponding housing, the gap bridge cooling duct（13）Water cavity is descended with the annular respectively in two ends（3）With petal cooling chamber（6）'s
Top connects.
8. a kind of novel diesel engine cylinder cover according to claim 7, it is characterised in that：The basin shape upper water cavity（2）With
The lower water cavity of annular（3）Between be provided with chilled water modulation hole（15）, the chilled water modulation hole（15）Positioned at exhaust duct（16）Under
Side.
9. a kind of novel diesel engine cylinder cover according to any one of claim 1-8, it is characterised in that：In the cylinder head
Body（1）Bottom surface offers 12 cooling water inlet openings（17）, cooling water is by the cooling water inlet opening（17）It is cold from cylinder
But chamber enters the lower water cavity of the annular（3）.
10. a kind of novel diesel engine cylinder cover according to claim 9, it is characterised in that：The basin shape upper water cavity（2）'s
End is additionally provided with exhaust duct cooling water cavity（18）, the exhaust duct cooling water cavity（18）It is coated with the cylinder head body（1）'s
Exhaust duct（16）, exhaust duct（16）Top arranges cooling water apopore（19）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119261.0A CN106523177B (en) | 2016-12-08 | 2016-12-08 | A kind of cylinder cover for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119261.0A CN106523177B (en) | 2016-12-08 | 2016-12-08 | A kind of cylinder cover for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523177A true CN106523177A (en) | 2017-03-22 |
| CN106523177B CN106523177B (en) | 2019-06-21 |
Family
ID=58342147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611119261.0A Active CN106523177B (en) | 2016-12-08 | 2016-12-08 | A kind of cylinder cover for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523177B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143430A (en) * | 2017-07-06 | 2017-09-08 | 中国船舶重工集团公司第七研究所 | Cylinder cover for diesel engine |
| CN108547705A (en) * | 2018-06-04 | 2018-09-18 | 广西玉柴机器股份有限公司 | Cylinder head with middle partition board |
| CN111058959A (en) * | 2019-12-30 | 2020-04-24 | 中国船舶重工集团公司第七一一研究所 | Cylinder head and cylinder head cooling water cavity structure thereof |
| CN111894758A (en) * | 2020-08-27 | 2020-11-06 | 重庆潍柴发动机有限公司 | Cylinder cover and internal combustion engine thereof |
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| DE4433280A1 (en) * | 1994-09-19 | 1996-03-28 | Motoren Werke Mannheim Ag | Cylinder head for IC engine |
| CN2908817Y (en) * | 2006-04-26 | 2007-06-06 | 中国北车集团大连机车车辆有限公司 | Cylinder head of diesel engine |
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| CN103953454A (en) * | 2014-04-03 | 2014-07-30 | 中国北方发动机研究所(天津) | Water cavity structure of air cylinder cover of internal combustion engine |
| CN206571589U (en) * | 2016-12-08 | 2017-10-20 | 四川中车玉柴发动机股份有限公司 | A kind of novel diesel engine cylinder cover |
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2016
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|---|---|---|---|---|
| US4106444A (en) * | 1975-04-03 | 1978-08-15 | Motoren-Und Turbinen-Union Friedrichshafen Gmbh | Individual cylinder head |
| DE4433280A1 (en) * | 1994-09-19 | 1996-03-28 | Motoren Werke Mannheim Ag | Cylinder head for IC engine |
| CN2908817Y (en) * | 2006-04-26 | 2007-06-06 | 中国北车集团大连机车车辆有限公司 | Cylinder head of diesel engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143430A (en) * | 2017-07-06 | 2017-09-08 | 中国船舶重工集团公司第七研究所 | Cylinder cover for diesel engine |
| CN107143430B (en) * | 2017-07-06 | 2023-11-14 | 中国船舶集团有限公司第七一一研究所 | Cylinder cover of diesel engine |
| CN108547705A (en) * | 2018-06-04 | 2018-09-18 | 广西玉柴机器股份有限公司 | Cylinder head with middle partition board |
| CN111058959A (en) * | 2019-12-30 | 2020-04-24 | 中国船舶重工集团公司第七一一研究所 | Cylinder head and cylinder head cooling water cavity structure thereof |
| CN111058959B (en) * | 2019-12-30 | 2024-03-29 | 中国船舶集团有限公司第七一一研究所 | Cylinder cover and cylinder cover cooling water cavity structure thereof |
| CN111894758A (en) * | 2020-08-27 | 2020-11-06 | 重庆潍柴发动机有限公司 | Cylinder cover and internal combustion engine thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106523177B (en) | 2019-06-21 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Integral water channel mould of cylinder cover of diesel engine Effective date of registration: 20200707 Granted publication date: 20190621 Pledgee: Guangxi Yuchai Machinery Group Co.,Ltd. Pledgor: SICHUAN YCRRC ENGINE Co.,Ltd. Registration number: Y2020980003846 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |