CN101818701B - 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
- CN101818701B CN101818701B CN201010154375.5A CN201010154375A CN101818701B CN 101818701 B CN101818701 B CN 101818701B CN 201010154375 A CN201010154375 A CN 201010154375A CN 101818701 B CN101818701 B CN 101818701B
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- Prior art keywords
- air
- cylinder head
- valve
- intake
- diesel engine
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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 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 intake valve of cylinder head and the layout of exhaust valve in small air-cooled diesel engine, be the straight line being parallel to crankshaft center line along, the line of centres of intake valve, exhaust valve is parallel with crankshaft center line, and the projection of two lines is overlapping, the cooling duct of setting passes through in intake valve place.This structure makes to be cylinder head entity part between intake valve and exhaust valve, cooling air is formed from cooling duct to intake valve and carries out wind cooling temperature lowering to the entity at intake valve place, but, due to exhaust valve and intake valve point-blank, exhaust valve is positioned at after intake valve, after cooling air cools intake valve place, walk around exhaust valve to flow out, because exhaust valve is after intake valve, exhaust valve near zone almost becomes cooling dead angle, cannot effectively be cooled, the overall cooling effect of cylinder head is had a strong impact on.Cause cooling of the inlet and outlet door of existing air-cooled diesel engine unbalanced thus, the difference of valve motion increases, and the performance of diesel engine is affected.
Summary of the invention
The object 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 that the axis of the line of centres between inlet and outlet door and bent axle is oblique is staggered to form angle, cooling duct can be passed with both sides between inlet and outlet door, make can both obtain effective cooling around inlet and outlet door place, can ensure that the motion of inlet and outlet door is balanced, improve the performance of diesel engine, the overall cooling effect of cylinder head can be improved again.
The object of the present invention is achieved like this: the intake duct on diesel engine cylinder head and air outlet flue lay respectively at the relative both sides of cylinder head, the Crankshaft of diesel engine to intake and exhaust direction in the same way, be located at that the axis of the line of centres between the intake valve of intake duct and the exhaust valve being located at air outlet flue and bent axle is oblique is staggered to form angle, cylinder head is provided with multiple cooling duct running through cylinder head entity part along intake and exhaust direction, wherein left cooling duct runs through entity on the left of exhaust valve, right cooling duct runs through entity on the right side of intake valve, middle cooling duct runs through entity between exhaust valve and intake valve, the wind scooper that the corresponding diesel engine of air intake of cooling duct is arranged.
The line of centres between intake valve and exhaust valve and the oblique angle be staggered to form of the axis of bent axle are 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 respective exhaust outlet.
Described middle cooling duct passes after exhaust valve place turns.
Described right cooling duct is between intake valve and the tappet room of cylinder head.
Owing to adopting technique scheme, be located at that the axis of the line of centres between the intake valve of intake duct and the exhaust valve being located at air outlet flue and bent axle is oblique is staggered to form angle, such intake valve deviates from the projection line above crankshaft center line on arranging, make to be provided with between intake valve and exhaust valve the position that can arrange along the axially extended middle cooling duct of bent axle, and allow the line of centres between intake valve and exhaust valve and Crankshaft to oblique staggered, be conducive on cylinder head along the casting of the axially extended cooling duct of bent axle or Drilling operation, the shaping of air channel or processing is made to be more prone to realize.Cylinder head is provided with multiple cooling duct running through cylinder head entity part along intake and exhaust direction, and wherein left cooling duct runs through entity on the left of exhaust valve, and right cooling duct runs through entity on the right side of intake valve, and middle cooling duct runs through entity between exhaust valve and intake valve.Cooling air can be made thus from three cooling ducts through cylinder head, between inlet and outlet door and both sides are cooled, allow around intake valve, exhaust valve and can obtain effective cooling, eliminate the wind cooling temperature lowering blind spot that can not get around original air-cooled diesel engine exhaust valve cooling, drastically increase the overall 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 respective exhaust outlet, can increase the air output of left cooling duct and middle cooling duct; And middle cooling duct passes after exhaust valve place turns, enable the cooling air of middle cooling duct directly arrive at exhaust valve place, the cooling at exhaust valve place is guaranteed, can ensure that the motion of inlet and outlet door is balanced thus, improve the performance of diesel engine.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is the cross-sectional view of cylinder head of the present invention.
In accompanying drawing, 1 is bent axle, and 2 is cylinder head, 3 is silencing apparatus, and 4 is starter, and 5 is air 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 tappet room.
Embodiment
With reference to Fig. 1 and Fig. 2, valve arrangement structure for cylinder head of air-cooled diesel engine, diesel engine comprises crankcase body and cylinder head, and cylinder head is arranged on above crankcase body, cylinder head 2 entity part is provided with some mounting holes, passes mounting hole cylinder head and crankcase body connection by connecting bolt 13.Bent axle 1 is provided with in crankcase body, bent axle 1 stretches out from crankcase body side, silencing apparatus 3 is installed on the left of crankcase body, right side is provided with fuel tank 6, upside is provided with starter 4 and air filter 5, air filter 5 is positioned at above starter 4, is provided with wind scooper 7 between air filter 5 and cylinder head 2, and wind scooper 7 drains into cylinder head side the cooling air that wind wheel rotary becomes.Diesel engine cylinder head 2 has intake duct 10 and air outlet flue 11, intake duct 10 and air outlet flue 11 lay respectively at the relative both sides of cylinder head, the Crankshaft of diesel engine to intake and exhaust direction in the same way.Intake duct 10 is communicated with air filter 5, is provided with air guide sleeve 12 outside air outlet flue 11, and the heat of cylinder head is delivered on air guide sleeve, is cooled by cooling air.Intake duct 10 is provided with intake valve 15, air outlet flue 11 is provided with exhaust valve 14, be located at that the axis of the line of centres between the intake valve 15 of intake duct and the exhaust valve 14 being located at air outlet flue and bent axle is oblique is staggered to form angle α, intake valve and exhaust valve is made just to air guide sleeve, to avoid exhaust valve to be blocked by intake valve.The line of centres between intake valve and exhaust valve and the oblique angle be staggered to form of the axis of bent axle are 10 ° ~ 80 °.Cylinder head 2 is provided with multiple cooling duct running through cylinder head entity part along intake and exhaust direction, wherein left cooling duct 9a runs through entity on the left of exhaust valve, right cooling duct 9b runs through entity on the right side of intake valve, and right cooling duct 9b is between intake valve and the tappet room 16 of cylinder head.Middle cooling duct 8 runs through entity between exhaust valve and intake valve, and middle cooling duct 8 passes after exhaust valve place turns, and enables the cooling air of middle cooling duct directly arrive at exhaust valve place.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 respective exhaust outlet, can increase the air output of left cooling duct and middle cooling duct.The wind scooper 7 that the corresponding diesel engine of air intake of cooling duct is arranged.Whole like this cylinder head entity part can be cooled fully.
During air-cooled diesel engine work, cooling air is drawn by wind scooper 7, part cools intake duct and tappet room via right cooling duct 9b, and part is by left cooling duct 9a cooling spray oil nozzle, air outlet flue, and another part runs through the cylinder head entity between intake valve 15 and exhaust valve 14 by middle cooling duct 8.Whole cylinder head can be cooled fully.
Claims (2)
1. a valve arrangement structure for cylinder head of air-cooled diesel engine, intake duct on diesel engine cylinder head and air outlet flue lay respectively at the relative both sides of cylinder head, the Crankshaft of diesel engine to intake and exhaust direction in the same way, it is characterized in that: be located at that the axis of the line of centres between the intake valve of intake duct and the exhaust valve being located at air outlet flue and bent axle is oblique is staggered to form angle, cylinder head is provided with multiple cooling duct running through cylinder head entity part along intake and exhaust direction, wherein left cooling duct runs through entity on the left of exhaust valve, right cooling duct runs through entity on the right side of intake valve, middle cooling duct runs through entity between exhaust valve and intake valve, the air intake of described left cooling duct and middle cooling duct is a common intake grill, outlet air end is respectively respective exhaust outlet, described middle cooling duct passes after exhaust valve place turns, described right cooling duct is between intake valve and the tappet room of cylinder head, the wind scooper that the corresponding diesel engine of air intake of cooling duct is arranged.
2. valve arrangement structure for cylinder head of air-cooled diesel engine according to claim 1, is characterized in that: the line of centres between intake valve and exhaust valve and the oblique angle be staggered to form of the axis of bent axle are 10 ° ~ 80 °.
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 CN101818701A (en) | 2010-09-01 |
| CN101818701B true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107725207A (en) * | 2017-10-23 | 2018-02-23 | 何木栋 | Petrol engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421297A (en) * | 1992-04-20 | 1995-06-06 | Kawasaki Jukogyo Kabushiki Kaisha | Four-cycle engine |
Family Cites Families (9)
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
-
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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421297A (en) * | 1992-04-20 | 1995-06-06 | Kawasaki Jukogyo Kabushiki Kaisha | Four-cycle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011134380A1 (en) | 2011-11-03 |
| CN101818701A (en) | 2010-09-01 |
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