CN101818701A - Valve arrangement structure for cylinder head of air-cooled diesel engine - Google Patents
Valve arrangement structure for cylinder head of air-cooled diesel engine Download PDFInfo
- Publication number
- CN101818701A CN101818701A CN201010154375A CN201010154375A CN101818701A CN 101818701 A CN101818701 A CN 101818701A CN 201010154375 A CN201010154375 A CN 201010154375A CN 201010154375 A CN201010154375 A CN 201010154375A CN 101818701 A CN101818701 A CN 101818701A
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- Prior art keywords
- air
- cylinder head
- valve
- diesel engine
- intake
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- 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
- F02F1/26—Cylinder heads having cooling means
- F02F1/28—Cylinder heads having cooling means for air cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
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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
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4285—Shape or arrangement of intake or exhaust channels in cylinder heads of both intake and exhaust channel
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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 a valve arrangement structure for the cylinder head of an air-cooled diesel engine. The air inlet passage and the air outlet passage on the cylinder head of the diesel engine are respectively arranged on the two sides opposite to the cylinder head; the axial direction of the crankshaft of the diesel engine is the same as an air inlet/outlet direction; the central connecting line between an air inlet valve arranged on the air inlet passage and an air outlet valve arranged on the air outlet passage and the axial direction of the crankshaft are obliquely staggered to form an included angle; the cylinder head is provided with a plurality of cooling air passages, wherein a left cooling air passage runs through a left entity of the air outlet valve; a right cooling air passage runs through a right entity of the air inlet valve; an intermediate cooling air passage runs through an entity between the air inlet valve and the air outlet valve; and the air inlet end of the cooling passage corresponds to the air guide cover arranged on the diesel engine. By the valve arrangement structure for the cylinder head of the air-cooled diesel engine, the central connecting line between the air inlet valve and the air outlet valve and the axial direction of the crankshaft are obliquely staggered to form the included angle, the peripheries of the air inlet valve and the air outlet valve can be effectively cooled, not only the isostatic movement of the air inlet valve and the air outlet valve can be ensured, the performances of the diesel engine are improved, but also the integral cooling effect of the cylinder head can be improved.
Description
Technical field
The present invention relates to the small air-cooled diesel engine field, be specifically related to a kind of valve arrangement structure for cylinder head of air-cooled diesel engine.
Background technique
Usually, the layout of the intake valve of cylinder head and exhaust valve in the small air-cooled diesel engine is the straight line that is parallel to crankshaft center line along, and the line of centres of intake valve, exhaust valve is parallel with crankshaft center line, and two the projection of line is overlapping, and the cooling duct of setting passes through in the intake valve place.It is the cylinder head entity part that this structure makes between intake valve and the exhaust valve, cooling air carries out wind cooling temperature lowering from the entity that cooling duct to intake valve forms the intake valve place, but, because exhaust valve and intake valve are point-blank, exhaust valve is positioned at the back of intake valve, after cooling air cools off the intake valve place, walking around exhaust valve flows out, because exhaust valve is in the back of intake valve, the exhaust valve near zone almost becomes the cooling dead angle, can't effectively be cooled, the whole cooling effect of cylinder head is had a strong impact on.Cause thus existing air-cooled diesel engine the inlet and outlet door cool unbalancedly, the difference of valve motion increases, the performance of diesel engine is affected.
Summary of the invention
The purpose of this invention is to provide a kind of valve arrangement structure for cylinder head of air-cooled diesel engine, it is by changing the layout of inlet and outlet door on cylinder head, make the line of centres between the inlet and outlet door and the axial oblique angle that is staggered to form of bent axle, cooling duct can be passed between the inlet and outlet door and both sides, can both effectively be cooled off around making inlet and outlet door place, can guarantee the motion equilibrium of inlet and outlet door, improve the performance of diesel engine, can improve the whole cooling effect of cylinder head again.
The object of the present invention is achieved like this: the intake duct on the diesel engine cylinder head lays respectively at the relative both sides of cylinder head with air outlet flue, the bent axle of diesel engine axially and the intake and exhaust direction in the same way, be located at the intake valve of intake duct and be located at the line of centres between the exhaust valve of air outlet flue and the axial oblique angle that is staggered to form of bent axle, cylinder head is provided with a plurality of cooling ducts that run through the cylinder head entity part along the intake and exhaust direction, wherein left cooling duct runs through exhaust valve left side entity, right cooling duct runs through intake valve right side entity, middle cooling duct runs through entity between exhaust valve and intake valve, the wind scooper that is provided with on the corresponding diesel engine of the air intake of cooling duct.
The axial oblique angle that is staggered to form of the line of centres between intake valve and the exhaust valve and bent axle is 10 °～80 °.
The air intake of described left cooling duct and middle cooling duct is a common intake grill, and outlet air end is respectively exhaust outlet separately.
Cooling duct passes after turning in the exhaust valve place in described.
Described right cooling duct is between the tappet chamber of intake valve and cylinder head.
Owing to adopt technique scheme, be located at the intake valve of intake duct and be located at the line of centres between the exhaust valve of air outlet flue and the axial oblique angle that is staggered to form of bent axle, intake valve departs from the projection line above the crankshaft center line on being provided with like this, make and had the position that can be provided with between intake valve and the exhaust valve along the axially extended middle cooling duct of bent axle, and make the line of centres and bent axle between intake valve and the exhaust valve axially oblique staggered, help the casting or the boring processing of the axially extended cooling duct of cylinder head upper edge bent axle, make the moulding in air channel or processing be more prone to realize.Cylinder head is provided with and a plurality ofly runs through the cooling duct of cylinder head entity part along the intake and exhaust direction, and wherein left cooling duct runs through exhaust valve left side entity, and right cooling duct runs through intake valve right side entity, and middle cooling duct runs through entity between exhaust valve and intake valve.Can make cooling air pass cylinder head thus from three cooling ducts, between the inlet and outlet door and both sides are cooled off, intake valve, exhaust valve can both effectively be cooled off on every side, eliminate the wind cooling temperature lowering blind spot that can not get cooling off around original air-cooled diesel engine exhaust valve, greatly improved the whole cooling effect of cylinder head.
The air intake of especially left cooling duct and middle cooling duct is a common intake grill, and outlet air end is respectively exhaust outlet separately, can increase the air output of left cooling duct and middle cooling duct; And middle cooling duct passes after turning in the exhaust valve place, and the cooling air of cooling duct can directly arrive at the exhaust valve place in making, and the cooling at exhaust valve place is guaranteed, and can guarantee the motion equilibrium of inlet and outlet door thus, improves the performance of diesel engine.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is the cross-sectional view of cylinder head of the present invention.
In the accompanying drawing, 1 is bent axle, and 2 is cylinder head, 3 is silencing apparatus, and 4 is starter, and 5 is empty filter, 6 is fuel tank, and 7 is wind scooper, and 8 is middle cooling duct, 9a is left cooling duct, and 9b is right cooling duct, and 10 is intake duct, 11 is air outlet flue, and 12 is air guide sleeve, and 13 is connecting bolt, 14 is exhaust valve, and 15 is intake valve, and 16 is the tappet chamber.
Embodiment
With reference to Fig. 1 and Fig. 2, valve arrangement structure for cylinder head of air-cooled diesel engine, diesel engine comprise crankcase body and cylinder head, and cylinder head is installed in the crankcase body top, cylinder head 2 entity part are provided with some mounting holes, pass mounting hole cylinder head and crankcase body connection by connecting bolt 13.Be provided with bent axle 1 in the crankcase body, bent axle 1 stretches out from the crankcase body side, the crankcase body left side is equipped with silencing apparatus 3, the right side is equipped with fuel tank 6, upside is equipped with starter 4 and empty filter 5, empty filter 5 is positioned at starter 4 tops, between empty filter 5 and the cylinder head 2 wind scooper 7 is installed, and wind scooper 7 drains into the cylinder head side to the cooling air that the wind wheel rotation forms.Have intake duct 10 and air outlet flue 11 on the diesel engine cylinder head 2, intake duct 10 lays respectively at the relative both sides of cylinder head with air outlet flue 11, the bent axle of diesel engine axially and the intake and exhaust direction in the same way.Intake duct 10 is communicated with empty filter 5, the air outlet flue 11 outer air guide sleeves 12 that are equipped with, and the heat transfer of cylinder head is to air guide sleeve, by cooling air cooling cooling.Intake duct 10 is provided with intake valve 15, air outlet flue 11 is provided with exhaust valve 14, be located at the intake valve 15 of intake duct and be located at the line of centres between the exhaust valve 14 of air outlet flue and the axial oblique angle α that is staggered to form of bent axle, make intake valve and exhaust valve avoid exhaust valve to be blocked over against air guide sleeve by intake valve.The axial oblique angle that is staggered to form of the line of centres between intake valve and the exhaust valve and bent axle is 10 °～80 °.Cylinder head 2 is provided with a plurality of cooling ducts that run through the cylinder head entity part along the intake and exhaust direction, wherein left cooling duct 9a runs through exhaust valve left side entity, right cooling duct 9b runs through intake valve right side entity, and right cooling duct 9b is between the tappet chamber 16 of intake valve and cylinder head.Middle cooling duct 8 runs through entity between exhaust valve and intake valve, middle cooling duct 8 passes after turning in the exhaust valve place, and the cooling air of cooling duct can directly arrive at the exhaust valve place in making.The air intake of described left cooling duct 9a and middle cooling duct 8 is a common intake grill, and outlet air end is respectively exhaust outlet separately, can increase the air output of left cooling duct and middle cooling duct.The wind scooper 7 that is provided with on the corresponding diesel engine of the air intake of cooling duct.Whole like this cylinder head entity part can access sufficient cooling.
During air-cooled diesel engine work, cooling air is drawn by wind scooper 7, part is via right cooling duct 9b cooling intake duct and tappet chamber, and part is by left cooling duct 9a cooling oil nozzle, air outlet flue, and another part runs through cylinder head entity between intake valve 15 and the exhaust valve 14 by middle cooling duct 8.Make whole cylinder head can access sufficient cooling.
Claims (5)
1. valve arrangement structure for cylinder head of air-cooled diesel engine, intake duct on the diesel engine cylinder head lays respectively at the relative both sides of cylinder head with air outlet flue, the bent axle of diesel engine axially and the intake and exhaust direction in the same way, it is characterized in that: be located at the intake valve of intake duct and be located at the line of centres between the exhaust valve of air outlet flue and the axial oblique angle that is staggered to form of bent axle, cylinder head is provided with a plurality of cooling ducts that run through the cylinder head entity part along the intake and exhaust direction, wherein left cooling duct runs through exhaust valve left side entity, right cooling duct runs through intake valve right side entity, middle cooling duct runs through entity between exhaust valve and intake valve, the wind scooper that is provided with on the corresponding diesel engine of the air intake of cooling duct.
2. valve arrangement structure for cylinder head of air-cooled diesel engine according to claim 1 is characterized in that: the axial oblique angle that is staggered to form of the line of centres between intake valve and the exhaust valve and bent axle is 10 °～80 °.
3. valve arrangement structure for cylinder head of air-cooled diesel engine according to claim 1 is characterized in that: the air intake of described left cooling duct and middle cooling duct is a common intake grill, and outlet air end is respectively exhaust outlet separately.
4. according to claim 1 or 3 described valve arrangement structure for cylinder head of air-cooled diesel engine, it is characterized in that: cooling duct passes after turning in the exhaust valve place in described.
5. valve arrangement structure for cylinder head of air-cooled diesel engine according to claim 1 is characterized in that: described right cooling duct is between the tappet chamber of intake valve and cylinder head.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010154375.5A CN101818701B (en) | 2010-04-26 | 2010-04-26 | Valve arrangement structure for cylinder head of air-cooled diesel engine |
| PCT/CN2011/073285 WO2011134380A1 (en) | 2010-04-26 | 2011-04-25 | Cylinder head valve arrangement structure and air-cooled diesel engine including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010154375.5A CN101818701B (en) | 2010-04-26 | 2010-04-26 | Valve arrangement structure for cylinder head of air-cooled diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101818701A true CN101818701A (en) | 2010-09-01 |
| CN101818701B CN101818701B (en) | 2015-05-27 |
Family
ID=42653929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010154375.5A Active CN101818701B (en) | 2010-04-26 | 2010-04-26 | Valve arrangement structure for cylinder head of air-cooled diesel engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101818701B (en) |
| WO (1) | WO2011134380A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134380A1 (en) * | 2010-04-26 | 2011-11-03 | 隆鑫通用动力股份有限公司 | Cylinder head valve arrangement structure and air-cooled diesel engine including the same |
| CN107725207A (en) * | 2017-10-23 | 2018-02-23 | 何木栋 | Petrol engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421297A (en) * | 1992-04-20 | 1995-06-06 | Kawasaki Jukogyo Kabushiki Kaisha | Four-cycle engine |
| CN2572021Y (en) * | 2002-09-20 | 2003-09-10 | 中国嘉陵工业股份有限公司（集团） | Inlet and outlet valve cross arranged engine for motorcycle |
| CN2781016Y (en) * | 2005-04-30 | 2006-05-17 | 浙江钱江摩托股份有限公司 | Uniform section air flue motorcycle engine cylinder head |
| CN101082311A (en) * | 2007-06-29 | 2007-12-05 | 无锡开普动力有限公司 | Wind cooling diesel engine cylinder cover |
| CN201705487U (en) * | 2010-04-26 | 2011-01-12 | 隆鑫工业有限公司 | Cylinder head valve distributing structure of air-cooled diesel engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135960A (en) * | 1984-12-04 | 1986-06-23 | Yanmar Diesel Engine Co Ltd | Cylinder head for air-cooled type internal combustion engine |
| JP4244178B2 (en) * | 2003-09-26 | 2009-03-25 | 本田技研工業株式会社 | Cylinder head cooling air passage structure |
| JP4392300B2 (en) * | 2004-07-22 | 2009-12-24 | ヤンマー株式会社 | Cylinder head cooling structure |
| CN201661348U (en) * | 2010-03-03 | 2010-12-01 | 隆鑫工业有限公司 | Air duct distribution structure of air-cooled internal combustion engine |
| CN101818701B (en) * | 2010-04-26 | 2015-05-27 | 隆鑫通用动力股份有限公司 | Valve arrangement structure for cylinder head of air-cooled diesel engine |
-
2010
- 2010-04-26 CN CN201010154375.5A patent/CN101818701B/en active Active
-
2011
- 2011-04-25 WO PCT/CN2011/073285 patent/WO2011134380A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421297A (en) * | 1992-04-20 | 1995-06-06 | Kawasaki Jukogyo Kabushiki Kaisha | Four-cycle engine |
| CN2572021Y (en) * | 2002-09-20 | 2003-09-10 | 中国嘉陵工业股份有限公司（集团） | Inlet and outlet valve cross arranged engine for motorcycle |
| CN2781016Y (en) * | 2005-04-30 | 2006-05-17 | 浙江钱江摩托股份有限公司 | Uniform section air flue motorcycle engine cylinder head |
| CN101082311A (en) * | 2007-06-29 | 2007-12-05 | 无锡开普动力有限公司 | Wind cooling diesel engine cylinder cover |
| CN201705487U (en) * | 2010-04-26 | 2011-01-12 | 隆鑫工业有限公司 | Cylinder head valve distributing structure of air-cooled diesel engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134380A1 (en) * | 2010-04-26 | 2011-11-03 | 隆鑫通用动力股份有限公司 | Cylinder head valve arrangement structure and air-cooled diesel engine including the same |
| CN107725207A (en) * | 2017-10-23 | 2018-02-23 | 何木栋 | Petrol engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101818701B (en) | 2015-05-27 |
| WO2011134380A1 (en) | 2011-11-03 |
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