CN100526631C - Air-cooled internal-combustion engine - Google Patents

Air-cooled internal-combustion engine Download PDF

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Publication number
CN100526631C
CN100526631C CNB031588646A CN03158864A CN100526631C CN 100526631 C CN100526631 C CN 100526631C CN B031588646 A CNB031588646 A CN B031588646A CN 03158864 A CN03158864 A CN 03158864A CN 100526631 C CN100526631 C CN 100526631C
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CN
China
Prior art keywords
air
fore
combustion engine
cooling
cold passageway
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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.)
Expired - Fee Related
Application number
CNB031588646A
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Chinese (zh)
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CN1497158A (en
Inventor
神户敬司
俵田雄一
佐藤智康
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Publication date
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Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of CN1497158A publication Critical patent/CN1497158A/en
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Publication of CN100526631C publication Critical patent/CN100526631C/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • 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
    • 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
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • F01P1/10—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
    • 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
    • F02F1/30—Finned cylinder heads
    • F02F1/32—Finned cylinder heads the cylinder heads being of overhead valve type
    • 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

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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)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Provided is an air-cooled internal combustion engine, in which efficiency of cooling with air is improved in a cooling-air passage, an ignition plug is installed in a position where the plug is easily detachable, and an effective air-cooling is attained. In the air-cooled internal combustion engine, a valve train is provided above a combustion chamber, and a fore-and-aft cooling-air passage is provided between the combustion chamber and the valve train along an exhaust port and an intake port. Between the ports, a lateral cooling air passage is provided in communication with the fore-and-aft cooling-air passage. The ignition plug is installed in the lateral cooling-air passage. Cooling fins are provided curvedly from the fore-and-aft cooling-air passage to the lateral cooling-air passage. The center line of the exhaust port is inclined relative to the fore-and-aft direction of the combustion engine so that the front opening of the fore-and-aft cooling-air passage may be spread.

Description

Air-cooled internal combustion engine
Technical field
The present invention relates to be installed in the cold passageway of the air-cooled internal combustion engine on two-wheeled motor vehicle etc.
Background technique
Present air-cooled internal combustion engine has following this structure.In this internal-combustion engine, at two relief openings in the front portion of cylinder head and corresponding with them two outlet valves and two intakepories and be set up in parallel respectively with their two corresponding Aspirating valvess at the rear portion, be provided with ignition spark plug in position around above-mentioned four valves, be provided with the camshaft of direction to the left and right between cylinder head and the valve mechanism cover, by being provided with between two outlet valves and between two Aspirating valvess cylinder head is connected cold passageway at fore-and-aft direction, and be provided with the transverse direction cold passageway (for example with reference to patent documentation 1) that is communicated with above-mentioned fore-and-aft direction cold passageway.This example is provided with the ignition spark plug handling hole on cylinder head, it is gapped on every side that it is centered around the ignition spark plug main body portion, and this ignition spark plug handling hole also is communicated with above-mentioned fore-and-aft direction cold passageway.
Be installed in state on the two-wheeled motor vehicle at this internal-combustion engine, when two-wheeled motor vehicle travelled, air flowed into from the front openings of fore-and-aft direction cold passageway, and wherein a part flows out to the top of internal-combustion engine foreign side from described ignition spark plug handling hole; A part flows out to the sidepiece foreign side of internal-combustion engine from the transverse direction cold passageway in addition, and remaining air rearward flows out from the rear opening of fore-and-aft direction cold passageway.Process cooling air cylinder cap and ignition spark plug with this air ventilation.
Patent documentation 1
Special public clear 62-43050 communique (Fig. 2, Fig. 3).
Summary of the invention
In present technology, the air cooling effect of cold passageway is insufficient.In addition, the dismounting of ignition spark plug is not easy.The present invention seeks to improve the air cooling effect of cold passageway, and the while is located at ignition spark plug on the detachable mounted position and can carries out air cooling effectively.
The present invention in the described air-cooled internal combustion engine of first aspect, is provided with valve driving mechanism for solving above-mentioned problem on the top of firing chamber, be provided with the fore-and-aft direction cold passageway along relief opening and intakeport between described firing chamber and described valve driving mechanism.Between described relief opening and intakeport, be provided with the transverse direction cold passageway that is communicated with described fore-and-aft direction cold passageway, ignition spark plug is located on this transverse direction cold passageway, is provided with simultaneously from the cooled blade of described fore-and-aft direction cold passageway to the bending of described transverse direction cold passageway.
This structure of the present invention, owing to be provided with cooled blade in the cold passageway above the firing chamber, so the effective periphery of cooling combustion chamber.Ignition spark plug is located in the transverse direction cold passageway, and the cooled blade bending is so that cooling air is guided the direction of this ignition spark plug into, so can prevent the overheated of ignition spark plug.
The described air-cooled internal combustion engine of second aspect present invention is in the described air cooling internal-combustion engine of first aspect, and for the front openings of described fore-and-aft direction cold passageway is enlarged, the relative internal-combustion engine fore-and-aft direction of described relief opening center line line tilts.
Because this structure of the present invention so the opening area of front openings becomes greatly, can import cold passageway to the air of volume, therefore can improve the air cooling effect of the wind that travels.
Description of drawings
Fig. 1 is the major component sectional arrangement drawing of one embodiment of the invention air-cooled internal combustion engine;
Fig. 2 is the figure that wants the portion cross section to see from the rear above-mentioned internal-combustion engine;
Fig. 3 is the horizontal sectional drawing (the III-III section of Fig. 2) of above-mentioned combustion engine cylinder head;
Fig. 4 is a stereogram of seeing cooled blade from the top of retreading.
Embodiment
Fig. 1 is the major component sectional arrangement drawing of one embodiment of the invention air-cooled internal combustion engine 1, has represented the top of overhead camshaft type single cylinder internal combustion engine.Arrow F directed forward among the figure.The major component shell of internal-combustion engine 1 is made of cylinder block 2, cylinder head 3, valve mechanism cover 4 among the figure.Piston 5 moves up and down in cylinder block 2, formation firing chamber 6 below cylinder head 3.On cylinder head 3, form relief opening 7 and the intakeport 9 connected with firing chamber 6.Medial extremity at relief opening 7 is provided with the outlet valve 8 that opens and closes this path.The outlet pipe that diagram has been omitted is connected the outboard end of relief opening 7.Medial extremity at intakeport 9 is provided with the Aspirating valves 10 that opens and closes this path.The vaporizer that diagram has been omitted is connected the outboard end of intakeport 9.
Outlet valve 8 is arranged to its axial region 8a and is leaned forward at the forward place of cylinder head 3, installs outlet valve 8 to the pressured valve spring 11 of closing direction at the top of axial region 8a protuberance.Aspirating valves 10 is arranged to its axial region 10a and is located hypsokinesis in the back of leaning on of cylinder head 3, installs Aspirating valves 10 to the pressured valve spring 12 of closing direction at the top of axial region 10a protuberance.
Form valve chambers 13 with cylinder head 3 and valve mechanism cover 4, the valve driving mechanism that opens and closes described outlet valve 8 and Aspirating valves 10 by folding and unfolding at this.Can be rotated to support between the involutory surface of cylinder head 3 and valve mechanism cover 4 at camshaft 14 by the left and right directions of relative internal-combustion engine 1 fore-and-aft direction quadrature in outlet valve 8 and the V figure space that Aspirating valves 10 forms.Being formed with the exhaust that drives outlet valve 8 switchings on this camshaft 14 uses cam 15 and drives the air-breathing cam 16 of using that Aspirating valves 10 opens and closes.
Exhaust is deflated with pitman arm shaft 18 and can joltily supports with rocking arm 17 above outlet valve 8, and the one end is by the last end in contact of tappet 19 with outlet valve axial region 8a, and the other end contacts with cam 15 with exhaust with roller 21 by the exhaust that is bearing on the roller shaft 20.Air-breathingly above Aspirating valves 10 can joltily be supported with pitman arm shaft 23 by air-breathing with rocking arm 22, the one end is by the last end in contact of tappet 24 with Aspirating valves axial region 10a, and the other end contacts with cam 16 with air-breathing by the air-breathing usefulness roller 26 that is bearing on the roller shaft 25.
Fig. 2 is the figure that the major component cross section of above-mentioned internal-combustion engine is seen from the rear.Cylinder head 3 is in its right side is equipped with the electrode 27a reeve firing chamber 6 of ignition spark plug 27, its front end among the figure.One end of camshaft 14 inserts in the chain chamber 28, and driven sprocket 29 is fixed on its insertion end.Driving sprocket wheel (not shown) is fixed on the bent axle, hangs with cam chain 30 between driving sprocket wheel described in the chain chamber 28 and driven sprocket 29.Rotate by cam chain 30 drive cam shaft 14 during crankshaft rotating.
Fig. 3 is the III-III sectional drawing of Fig. 2, has represented the horizontal sectional drawing of described combustion engine cylinder head.Ignition spark plug 27 has been taken off in expression among the figure, exposes the state of ignition spark plug assembly department 31.Arrow F directed forward.Cylinder head center side along the perisporium 28a of chain chamber 28 is formed with the fore-and-aft direction cold passageway 32 that the cylinder head fore-and-aft direction is connected.The space that chain chamber perisporium 28a and relief opening perisporium 7a clip is a front openings 33; The space that chain chamber perisporium 28a and intakeport perisporium 9a clip is a rear opening 34.In addition, be communicated with, by being formed with the transverse direction cold passageway 35 that leaves to internal combustion engine side side between relief opening perisporium 7a and the intakeport perisporium 9a with described fore-and-aft direction cold passageway 32.The outside, both sides of ignition spark plug assembly department 31 is side openings 36.As shown in the figure, the fore-and-aft direction line B of the relative internal-combustion engine of center line A of relief opening 7 increases the opening area of front openings 33 to the direction tilt alpha angle that enlarges front openings 33, so that the air of volume is imported cold passageway.
In the joint of fore-and-aft direction cold passageway 32 and transverse direction cold passageway 35 and transverse direction cold passageway 35, be formed with three cooled blades.Be front vane 37, middle blade 38, rear blade 39.The part of blade 38, rear blade 39 band hatchings is to be used to strengthen and the wall thickness thickeied is carried on the back high portion among the figure, and its top is connected the top of cold passageway.
Fig. 4 is a stereogram of seeing described cooled blade from the top of retreading.In the part of top band hatching of blade 38, rear blade 39 are top sections that the wall thickness that is connected the cold passageway top is carried on the back the high 38a of portion, 39a.The longitudinal section that Fig. 1 has drawn three blades in the transverse direction cold passageway 35.Described three blades on the cold passageway of being located at that Fig. 2 has drawn and seen from the internal-combustion engine rear.
The structure of present embodiment air-cooled internal combustion engine as above.The two-wheeled motor vehicle that this internal-combustion engine has been installed produces the wind that travels in motion, this wind that travels flows into from the front openings 33 of fore-and-aft direction cold passageway 32, wherein a part by the leading role of three blades through transverse direction cold passageway 35, flow out from side opening 36 by the both sides of ignition spark plug 27.Another part flows out by leaving between three blades from the rear opening 34 of fore-and-aft direction cold passageway 32.
Face the outer wall of the cylinder head of fore-and-aft direction cold passageway 32 and transverse direction cold passageway 35 in the vehicle driving by the air cooling of travelling. Blade 37,38,39 before, during and after particularly the high temperature of firing chamber 6 passes to via top of combustion chamber shell 40 (Fig. 2) is with fore-and-aft direction cooling air and the cooling of transverse direction cooling air.Prevent that by these cooling actions cylinder head is overheated, prevent the bad seals of cylinder head periphery.In addition, because the high temperature that is produced by the electrode 30a of ignition spark plug 30 is delivered to the outside exposed division of ignition spark plug 30, with above-mentioned transverse direction cooling air cooling, so can prevent the damage of crossing thermosetting, the life-span of prolongation ignition spark plug by ignition spark plug.In addition, because ignition spark plug of the present invention is arranged in the medium dip of transverse direction cold passageway, so improve maintenance from the easy dismounting of the sidepiece of internal-combustion engine.
As shown in Figure 3, because the direction tilt alpha angle of the fore-and-aft direction line B of the relative internal-combustion engine of center line A of relief opening 7 to expansion front openings 33, so the opening area of front openings 33 increases, can import the air of volume, therefore improved the air cooling effect that produces by the wind that travels.

Claims (2)

1, a kind of air-cooled internal combustion engine, top in the firing chamber is provided with valve driving mechanism, between described firing chamber and described valve driving mechanism, be provided with the fore-and-aft direction cold passageway along relief opening and intakeport, it is characterized in that, between described relief opening and intakeport, be provided with the transverse direction cold passageway that is communicated with described fore-and-aft direction cold passageway, on this transverse direction cold passageway, be provided with ignition spark plug, be provided with simultaneously from the cooled blade of described fore-and-aft direction cold passageway to the bending of described transverse direction cold passageway.
2, air-cooled internal combustion engine as claimed in claim 1 is characterized in that, for the front openings of described fore-and-aft direction cold passageway is enlarged, the relative internal-combustion engine fore-and-aft direction of described relief opening center line line tilts.
CNB031588646A 2002-09-24 2003-09-15 Air-cooled internal-combustion engine Expired - Fee Related CN100526631C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP276924/2002 2002-09-24
JP2002276924 2002-09-24
JP276924/02 2002-09-24

Publications (2)

Publication Number Publication Date
CN1497158A CN1497158A (en) 2004-05-19
CN100526631C true CN100526631C (en) 2009-08-12

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CNB031588646A Expired - Fee Related CN100526631C (en) 2002-09-24 2003-09-15 Air-cooled internal-combustion engine

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EP (1) EP1403496B1 (en)
KR (1) KR100569164B1 (en)
CN (1) CN100526631C (en)
BR (1) BR0304160A (en)
ES (1) ES2295513T3 (en)
MX (1) MXPA03008260A (en)
TW (1) TWI221877B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4327771B2 (en) * 2005-06-23 2009-09-09 本田技研工業株式会社 Air-cooled engine
JP5479965B2 (en) * 2010-03-23 2014-04-23 本田技研工業株式会社 Spark plug cooling device for vehicle engine
TWI381093B (en) * 2011-02-21 2013-01-01 Kwang Yang Motor Co Air Cooling Engine 's Cylinder Head Heat Dissipation
EP2410164A3 (en) * 2010-07-19 2012-10-10 Kwang Yang Motor Co., Ltd. Structure of cylinder head of air cooling engine
CN102312718B (en) * 2011-03-14 2014-12-10 隆鑫通用动力股份有限公司 Universal gasoline engine
CN102312750A (en) * 2011-03-14 2012-01-11 隆鑫通用动力股份有限公司 Gasoline engine and air-cooled cylinder head thereof
DE102011120465A1 (en) 2011-12-07 2013-06-13 Andreas Stihl Ag & Co. Kg Internal combustion engine with a fuel system
DE102011120464A1 (en) 2011-12-07 2013-06-13 Andreas Stihl Ag & Co. Kg implement
TWI454616B (en) * 2012-08-22 2014-10-01 Kwang Yang Motor Co Engine heat dissipation of cylinder head
JP2014070621A (en) * 2012-10-01 2014-04-21 Yamaha Motor Co Ltd Air-cooled internal combustion engine and saddle type vehicle with the same
CN105201612B (en) * 2014-06-10 2018-08-07 光阳工业股份有限公司 The engine air guide structure of motorcycle
JP6900418B2 (en) * 2019-03-29 2021-07-07 本田技研工業株式会社 Internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301641A (en) * 1991-11-06 1994-04-12 Honda Giken Kogyo Kabushiki Kaisha Internal combustion engine
JPH10159510A (en) * 1996-11-29 1998-06-16 Kawasaki Heavy Ind Ltd Valve structure of over head valve type engine
TW358848B (en) * 1997-06-25 1999-05-21 Mitsubishi Heavy Ind Ltd Structure of overhead-valve internal combustion engine and manufacturing method for the same

Also Published As

Publication number Publication date
KR20040026599A (en) 2004-03-31
EP1403496A1 (en) 2004-03-31
TWI221877B (en) 2004-10-11
BR0304160A (en) 2004-08-31
CN1497158A (en) 2004-05-19
EP1403496B1 (en) 2007-11-14
TW200409859A (en) 2004-06-16
KR100569164B1 (en) 2006-04-07
ES2295513T3 (en) 2008-04-16
MXPA03008260A (en) 2004-09-03

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Granted publication date: 20090812