CN201062547Y - Cylinder cap for air-cooled diesel engine - Google Patents
Cylinder cap for air-cooled diesel engine Download PDFInfo
- Publication number
- CN201062547Y CN201062547Y CNU2007200401568U CN200720040156U CN201062547Y CN 201062547 Y CN201062547 Y CN 201062547Y CN U2007200401568 U CNU2007200401568 U CN U2007200401568U CN 200720040156 U CN200720040156 U CN 200720040156U CN 201062547 Y CN201062547 Y CN 201062547Y
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- air
- cooling air
- cylinder head
- cylinder cover
- cooling
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Abstract
The utility model relates to an air-cooled type diesel engine air cylinder cover, which comprises an air intaking channel 1, an air exhaust channel 2, a nose bridge zone 5, an upper and lower cooling air inlet and outlet opening, and countervanes. The inlet and outlet of the cylinder cover cooling air are guided respectively through a wind guiding cover, and therefore an enclosed air cylinder cover is formed. The utility model has the advantages that: firstly, the channel and the flow quantity of the cooling air are respectively configured reasonably, after cooling the air cylinder cover, the cooling air is guided to blow an air exhaust muffler through a sound insulation and thermal insulation chamber, and is exhausted with high temperature burned gas in identical direction, by adopting the methods, the security operating area is expanded, the sound insulation and thermal insulation chamber can shield noise, and also forms thermal protection on the high temperature surface of the muffler; secondly, the countervanes are adopted to guide more cooling air to the high temperature zone near the nose bridge area, the temperature of the nose bridge zone and an oil ejector are effectively reduced, and the utility model ensures the engine to be operated stably; thirdly, each countervane is supported vertically between the thermal power surface and the top surface of the air cylinder cover, an I-shaped cross section structure is formed, the rigidity of the air cylinder cover is enhanced, the utility model is not favorable for the reducing of the distortion of the air cylinder cove, and also reducing of the noise.
Description
One, technical field
The utility model belongs to cylinder cover for diesel engine, and particularly a kind of cylinder head of air-cooled diesel engine belongs to the reciprocating internal combustion engine technical field.
Two, background technique
Prior art: air-cooled diesel engine is widely used in the small power generation system, and good performance of heat dissipation is very important to its safe and reliable operation.Air cooling system is to utilize high-speed air flow directly to blow over the outer surface of cylinder head and cylinder block, the heat that spreads out of from cylinder interior is dispersed into the atmosphere goes, and works in best temperature range to guarantee motor.
Cylinder and cylinder head adopt the aluminum alloy that conducts heat preferably to cast, in order to increase heat diffusion area, each cylinder generally all separates manufacturing, at the gentle cylinder lid surface of cylinder many evenly distributed radiating fin that distribute, to increase heat diffusion area, the air stream that utilizes different modes to produce dispels heat in the atmosphere.
Because the diesel engine heat load is higher, the heat that need take away is more, so air-cooled diesel engine adopts power, axial flow fan that flow is bigger that motor is forced to cool off more.In order to effectively utilize air stream and to guarantee that each cylinder evenly cools off, air guide sleeve is housed all generally on air cooling engine.
Though air cooling system and water cooling system is relatively, have simple in structure, in light weight, fault is few, need not advantages such as special maintenance, exists shortcomings such as cooling is even inadequately.
The open layout of the many employings of the radiating fin of air-cooled diesel engine cylinder head at present is vulnerable to surrounding environment influence in the gas flow process, and is not ideal enough to the radiating effect in cylinder head bridge of the nose district.
Three, model utility content
The utility model discloses a kind of air-cooled cylinder cover for diesel engine, this cylinder head is closed, that is: use wind scooper respectively to the air intake and the air-out channeling conduct of cooling air, makes it to flow according to the direction of appointment.In addition, also by guiding, improved the radiating effect of bridge of the nose district high temperature position to cooling air.
Technical solution of the present utility model is: a kind of air-cooled cylinder cover for diesel engine, cast inblock forms, and is configured with intake duct, air outlet flue, intake valve guide hole, exhaust valve guide hole, mounting hole of oil sprayer, bridge of the nose district and push rod chamber in the cylinder head.Be provided with the cooling air import between intake duct wall and the left push rod locular wall, be provided with down the cooling air import between intake duct wall and the cylinder head sidewall, be provided with cooling air outlet between air outlet flue wall and the right push rod locular wall, be provided with down cooling air outlet between air outlet flue wall and the cylinder head sidewall, form between the last cooling air inlet/outlet and go up cooling duct, form cooling duct down between the following cooling air inlet/outlet, and the supreme cooling air outlet of cooling air import forms the 3rd air channel, each cooling duct intercommunication down.Bridge of the nose district is arranged in the 3rd air channel, cylinder head middle part, mounting hole of oil sprayer is positioned at bridge of the nose district deflection cooling duct one side down, be provided with one group of guiding piece from the following inside following cooling duct turning of cooling air import, described guiding piece is guided a part of cooling air into oil sprayer and bridge of the nose district, discharge from last cooling air outlet, all the other a part of cooling airs are from cooling air outlet discharge down.Following cooling air outlet is to be provided with like this: be about to its outlet and be controlled at a certain size, form restriction effect, force a part of cooling air that enters this passage to turn to, blow over oil sprayer and bridge of the nose district it is carried out the emphasis cooling.Last cooling duct is respectively equipped with the guiding cooling airflow guiding piece that advances and flows out, derivation after will guiding near the cylinder head center zone (this place is because of being subjected to the violent temperature of combustion gas heating higher) into and implement to cool off by the cooling air in this air channel.The two ends of described each guiding piece vertical support respectively form " worker " font cross-sectional configuration on the gentle top surface of cylinder cover of cylinder head fire power face.
This cylinder head is an enclosed cylinder head cover, and its meaning is: in the cylinder head inlet side air intake wind scooper is housed, will brings together therein according to the ratio of setting through the cooling air of cooling fan pressurization, specially cylinder head is cooled off; In the cylinder head air side air-out wind scooper is housed, guiding is left the cooling air of cylinder head cooling is implemented on exhaust silencer high temperature surface.The case part of air-out wind scooper and the middle part perforate of another piece is chimeric, formation has the cavity of cooling air outlet, this cavity contains exhaust silencer wherein and leaves ventilation gap between the two, make coaxial " returning " font structure that forms in the same way of silencing apparatus relief opening and cooling air outlet, the cooling air and the discharge in the same way thus of high-temp combustion waste gas that have been heated.
The beneficial effect that the utility model produces is:
(1) change traditional open air cooled cylinder lid into closed air cooled cylinder lid after, the air intake wind scooper forces cooling air to approach the surface that cylinder head need be cooled off, and has strengthened convection heat transfer intensity, has improved cooling effect.The chimeric cavity that becomes of air-out wind scooper and another case part becomes a sound-insulating and heat-insulating chamber, force the cooling air of being discharged by cylinder head to blow to the exhaust silencer that is arranged in the sound-insulating and heat-insulating chamber, these cooling air and high-temp combustion waste gas that have been heated are discharged in the same way then.Such design proposal is limited in flow area is less and direction the is certain spatial channel hot gas stream of final discharge, reduced the danger that personnel are burnt by high-temperature gas, and the sound-insulating and heat-insulating chamber can the masked segment noise, can reduce the danger that personnel are scalded effectively.
(2) adopt guiding piece, stablized the flow direction of cooling air, avoided the Yo-yo phenomenon that cooling air produces owing to flow direction disorder in the open cylinder head.Guiding piece is more guided cooling air into oil sprayer and bridge of the nose district, has fully effectively reduced this regional temperature, guarantees the steady running of motor.
(3) each guiding piece vertical support is between the gentle top surface of cylinder cover of cylinder head fire power face, form " worker " font cross-sectional configuration, this structure can increase cylinder head rigidity, improve the natural frequency of vibration, both helped reducing the cylinder-head distortion that causes by pressure of explosion in the cylinder, help reducing noise again.
Four, description of drawings
Fig. 1 is the cross-sectional view of air-cooled cylinder cover for diesel engine.
Fig. 2 is the schematic representation of the mobile route of cylinder head cooling air.
Fig. 3 is the schematic representation that guiding piece and cylinder head top and bottom form the I shape cross-sectional configuration.
Shown in the figure: intake duct 1, air outlet flue 2, left push rod chamber 3, right push rod chamber 4, bridge of the nose district 5, mounting hole of oil sprayer 6, guiding piece 7a, guiding piece 7b, guiding piece 7c, last cooling air import 8, last cooling air outlet 9, following cooling air import 10, following coolant outlet 11, cylinder head sidewall 12, intake valve guide hole 13, exhaust valve guide hole 14, air intake wind scooper 15, air-out wind scooper 16, case 17, exhaust silencer 18, sound-insulating and heat-insulating chamber 19.
Five, embodiment
Embodiment 1: air-cooled cylinder cover for diesel engine, adopt integral casting forming.Be provided with cooling air import 8 between intake duct 1 wall and left push rod chamber 3 walls, be provided with cooling air outlet 9 between air outlet flue 2 walls and right push rod chamber 4 walls, be provided with down cooling air import 10 between intake duct 1 wall and the cylinder head sidewall 12, be provided with down cooling air outlet 11 between air outlet flue 2 walls and the cylinder head sidewall 12, each cooling air port intercommunication, bridge of the nose district 5 is between intake valve guide hole 13 and exhaust valve guide hole 14, and mounting hole of oil sprayer 6 is positioned at bridge of the nose district 5 deflections cooling duct one side down.The turning, air channel that enters cylinder head by following cooling air import 10 is provided with guiding piece 7a, to guide oil sprayer (not shown) and the bridge of the nose district 5 that is loaded in the mounting hole of oil sprayer 6 into by a part of cooling air in this air channel, discharge from last cooling air outlet 9 then, remaining a part of cooling air is from cooling air outlet 11 discharges down.Following cooling air outlet 11 is to be provided with like this: be about to its outlet flow area and be controlled at certain area, form restriction effect, brush bridge of the nose district 5 it is carried out the emphasis cooling purpose thereby force a part of cooling air to turn to and discharge to reach from last cooling air outlet 9.The air channel that is entered cylinder head by last cooling air import 8 is being provided with guiding piece 7b near near the left push rod chamber 3, the guiding piece 7b guiding cooling air by this air channel turns near the zone (this place is because of being subjected to the violent temperature of combustion gas heating higher) the cylinder head center, is guided from last cooling air outlet 9 outflows by guiding piece 7c then.The equal vertical support of guiding piece 7a, 7b and 7c forms " worker " font cross-sectional configuration between cylinder head fire power face and cylinder head end face.
So-called enclosed cylinder head cover, its meaning is: in the cylinder head inlet side air intake wind scooper 15 is housed, will brings together wherein according to the ratio of setting through the cooling air of cooling fan pressurization, cylinder head is cooled off.In the cylinder head air side air-out wind scooper 16 is housed, air-out wind scooper 16 is chimeric with the case 17 of another piece middle part perforate, form a sound-insulating and heat-insulating chamber 19 that has cooling air outlet, this sound-insulating and heat-insulating chamber 19 is contained exhaust silencer 18 wherein and is left ventilation gap between the two, export-oriented seeing, the two Way out unanimity forms " returning " font structure, and feasible cooling air and the high-temp combustion waste gas that has been heated is discharged in the same way.
Claims (5)
1. air-cooled cylinder cover for diesel engine, comprise intake duct (1), air outlet flue (2), bridge of the nose district (5), mounting hole of oil sprayer (6), guiding piece (7a), (7b), (7c), it is characterized in that: be provided with cooling air import (8) between described intake duct (1) wall and left push rod chamber (3) wall, be provided with down cooling air import (10) between intake duct (1) wall and the cylinder head sidewall (12), be provided with cooling air outlet (9) between air outlet flue (2) wall and right push rod chamber (4) wall, be provided with down cooling air outlet (11) between air outlet flue (2) wall and the cylinder head sidewall (12), in the cooling air inlet side of this cylinder head air intake wind scooper (15) is housed, air-out wind scooper (16) is equipped with in the cooling air air side, constitutes the cooling air guidance system of sealing thus, becomes enclosed cylinder head cover.
2. a kind of air-cooled cylinder cover for diesel engine as claimed in claim 1, it is characterized in that: case (17) the chimeric formation sound-insulating and heat-insulating chamber (19) of described air-out wind scooper (16) and the middle part perforate of another piece, exhaust silencer (18) is contained wherein, perforate on the case (17) is the outlet of cooling air, this outlet is greater than the relief opening of exhaust silencer (18), the two opening direction unanimity forms " returning " font structure, makes cooling air and high-temp combustion waste gas discharge in the same way.
3. a kind of air-cooled cylinder cover for diesel engine as claimed in claim 1, it is characterized in that: described cooling air outlet (11) down is to be provided with like this: be about to its exit area and be controlled at a certain size, form restriction effect, force the part cooling air that enters this passage to turn to, blow over oil sprayer and bridge of the nose district (5) cool off it.
4. a kind of air-cooled cylinder cover for diesel engine as claimed in claim 1 is characterized in that: described guiding piece (7a) is guided a part of cooling air into bridge of the nose district (5) back and is discharged from last cooling air outlet (9).
5. a kind of air-cooled cylinder cover for diesel engine as claimed in claim 1 is characterized in that: described guiding piece (7a), (7b), (7c) all vertical support form " worker " font cross-sectional configuration between cylinder head fire power face and cylinder head end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200401568U CN201062547Y (en) | 2007-06-29 | 2007-06-29 | Cylinder cap for air-cooled diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200401568U CN201062547Y (en) | 2007-06-29 | 2007-06-29 | Cylinder cap for air-cooled diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062547Y true CN201062547Y (en) | 2008-05-21 |
Family
ID=39450920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200401568U Expired - Fee Related CN201062547Y (en) | 2007-06-29 | 2007-06-29 | Cylinder cap for air-cooled diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062547Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009003350A1 (en) * | 2007-06-29 | 2009-01-08 | Wuxi Kipor Power Co., Ltd | A cylinder head of an air-cooling diesel engine |
| CN101776024B (en) * | 2009-01-08 | 2012-09-05 | 本田技研工业株式会社 | Cooling structure of cylinder head |
| CN111237077A (en) * | 2019-09-11 | 2020-06-05 | 浙江康思特动力机械有限公司 | Cylinder cover with multiple cooling air channels |
-
2007
- 2007-06-29 CN CNU2007200401568U patent/CN201062547Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009003350A1 (en) * | 2007-06-29 | 2009-01-08 | Wuxi Kipor Power Co., Ltd | A cylinder head of an air-cooling diesel engine |
| CN101776024B (en) * | 2009-01-08 | 2012-09-05 | 本田技研工业株式会社 | Cooling structure of cylinder head |
| CN111237077A (en) * | 2019-09-11 | 2020-06-05 | 浙江康思特动力机械有限公司 | Cylinder cover with multiple cooling air channels |
| CN111237077B (en) * | 2019-09-11 | 2024-04-16 | 浙江康思特动力机械有限公司 | Cylinder cover provided with multiple cooling air channels |
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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: 20080521 Termination date: 20140629 |
|
| EXPY | Termination of patent right or utility model |