CN101111669B - IC engine - Google Patents
IC engine Download PDFInfo
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- CN101111669B CN101111669B CN200680000643XA CN200680000643A CN101111669B CN 101111669 B CN101111669 B CN 101111669B CN 200680000643X A CN200680000643X A CN 200680000643XA CN 200680000643 A CN200680000643 A CN 200680000643A CN 101111669 B CN101111669 B CN 101111669B
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- cylinder head
- air
- spark
- cylinder
- internal
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 16
- 239000003054 catalyst Substances 0.000 description 9
- 238000010304 firing Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 241000628997 Flos Species 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
-
- 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
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
- F02B77/086—Sensor arrangements in the exhaust, e.g. for temperature, misfire, air/fuel ratio, oxygen sensors
-
- 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
- F02F1/242—Arrangement of spark plugs or injectors
-
- 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
- F02F1/34—Finned cylinder heads with means for directing or distributing cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/02—Arrangements having two or more sparking plugs
Landscapes
- 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)
- Exhaust Silencers (AREA)
Abstract
An internal combustion engine has a cylinder head where an intake port and an exhaust port are formed and also has two plugs attached to the cylinder head. With the exhaust port in the middle, one ofthe plugs is placed on one side of the exhaust port and an exhaust gas sensor is on the other side.
Description
Technical field
The present invention relates to a kind of internal-combustion engine, this internal-combustion engine has suction port, relief opening and two spark plugs that are installed on the cylinder head.
Background technique
In existing Vehicular internal combustion engine,, exhaust sensor (oxygen concentration sensor) is installed to (for example, referring to patent documentation 1) on the cylinder head in order to set the target air-fuel ratio that sucks air according to the oxygen concentration of exhaust.
Patent documentation 1:JP-A No.2004-316430
Summary of the invention
[problem to be solved by this invention]
But, in order to realize increasing output and to reduce fuel consumption by improving combustion performance, each cylinder of existing internal-combustion engine all has two spark plugs, can consider the cooling effectiveness around each spark-plug hole with regard to needs in this case and the structure of arranging each spark plug and exhaust sensor effectively.
Consider the problems referred to above, the purpose of this invention is to provide a kind of internal-combustion engine, this internal-combustion engine is installed on the cylinder head suction port, relief opening and two spark plugs, thereby arranges each spark plug and exhaust sensor effectively.
[means of dealing with problems]
To achieve these goals and advantage, the present invention adopts following means.
Promptly, first embodiment's internal-combustion engine comprises for (for example being installed into gas port, suction port 49 in the exemplary embodiment) and relief opening (for example, relief opening 50 in the exemplary embodiment) cylinder head (for example, cylinder head 24 and 124 in the exemplary embodiment), and be connected on the described cylinder head two spark plugs (for example, spark plug 64 and 65 in the exemplary embodiment), this internal-combustion engine is characterised in that: in the described spark plug one and exhaust sensor (for example, exhaust sensor 68 in the exemplary embodiment) are installed in about on the described relief opening both sides respect to one another; On described cylinder head, be equipped with and (for example be used for the spark-plug hole of corresponding spark plug, spark-plug hole 66 and 67 in the exemplary embodiment) the air cover that cools off on every side (for example, air cover 69 in the exemplary embodiment), described two spark plugs are installed in the single air cover place that is arranged on the described cylinder head.
In first embodiment's internal-combustion engine, another spark plug is set on the described cylinder head in the same side of described exhaust sensor.
In addition, second embodiment's internal-combustion engine comprises for (for example being installed into gas port, suction port 49 in the exemplary embodiment) and relief opening (for example, relief opening 50 in the exemplary embodiment) cylinder head (for example, cylinder head 24 and 124 in the exemplary embodiment), and be connected on the described cylinder head two spark plugs (for example, spark plug 64 and 65 in the exemplary embodiment), this internal-combustion engine is characterised in that: exhaust sensor is installed (for example on the relative both sides of described relief opening, exhaust sensor 68 in the exemplary embodiment) and be installed on the described cylinder head the air cover (for example, in the exemplary embodiment air cover 69) (for example advance the air introducing port, the air introducing port 75 of advancing in the exemplary embodiment), described two spark plugs are installed in the single air cover place that is arranged on the described cylinder head.
Internal-combustion engine according to first and second embodiments has cylinder block (for example, cylinder block 22 and 122 in the exemplary embodiment), and this cylinder block is so that its axis (for example, axis C in the exemplary embodiment) is roughly parallel to the mode on ground is mounted.
[invention effect]
According to first embodiment's internal-combustion engine, two spark plugs and described exhaust sensor can be arranged on the single cylinder head effectively.In addition, described exhaust sensor is easy to trigger and can be from the accurate detected gas concentration of warming temperature.
In addition, a same side at described exhaust sensor in described spark plug is arranged on the described cylinder head, and the air cover that is used for cooling off the spark-plug hole peripheral region to corresponding spark plug is installed under the situation on the described cylinder head, can arrange described two spark plugs effectively away from described exhaust sensor, simultaneously, can suitably control flowing of the interior air of advancing of air cover.Therefore, can improve cooling effectiveness in the peripheral region of the outer wall of each spark-plug hole and firing chamber.
Internal-combustion engine according to second embodiment, can improve the outer wall cooling effectiveness on every side of each spark-plug hole and firing chamber, and the mobile phase of the interior air of advancing of exhaust sensor and importing air cover is interfered, but can suitably be controlled at flowing of the interior air of advancing of air cover.
According to first and second embodiments' internal-combustion engine,, can cool off two spark plug adapters and cylinder head by single air cover so if two spark plugs are arranged in an air cover place that is installed on the cylinder head.
According to first and second embodiments' internal-combustion engine, if cylinder block is so that its axis is roughly parallel to the mode on ground is mounted, so can be by providing the sufficient air of advancing to improve cooling effectiveness in the air cover of installing to level in order to cooling internal combustion engines.
Description of drawings
Fig. 1 is the view according to the motorcycle left side of first embodiment of the invention.
Fig. 2 is the motor of expression motorcycle and the top view that outlet pipe is arranged.
Fig. 3 is the view on motor and outlet pipe right side.
Fig. 4 is the sectional view of motor.
Fig. 5 is perpendicular to the sectional view of section of the axis of the cylinder main body (cylinder body) in the motor.
Fig. 6 is perpendicular to the sectional view of section of the axis of the cylinder head in the motor.
Fig. 7 is the right side view corresponding to Fig. 3, the layout of the spark plug of expression motor.
Fig. 8 is an explanatory drawing, and the cylinder block of motor is in the past seen in expression from the left side.
Fig. 9 is the front view of the cylinder head of motor.
Figure 10 is the sectional view corresponding to Fig. 6, the expression second embodiment of the present invention.
Figure 11 is the right side view corresponding to Fig. 7, represents second embodiment's motor.
Description of reference numerals
1: motorcycle (vehicle)
20,120: motor (internal-combustion engine)
22,122: cylinder block
24,124: cylinder head
49: suction port
50: relief opening
64: the first spark plugs (spark plug)
65: the second spark plugs (spark plug)
Spark-plug hole in 66: the first (spark-plug hole)
Spark-plug hole in 67: the second (spark-plug hole)
68: exhaust sensor
69: the air cover
75: the air introducing port of advancing
C: axis
Embodiment
Introduce the preferred embodiments of the present invention with reference to the accompanying drawings.Unless stated otherwise, a front/rear and left side/right hereinafter described is identical with the direction of watching from vehicle.In addition, in the drawings, respectively, arrow FR represents the front side of vehicle; Arrow LH represents the left side of vehicle; Arrow UP represents the upside of vehicle.
[embodiment 1]
In motorcycle shown in Figure 1 (vehicle) 1, the head that the front fork that supports front-wheel 4 pivotly 5 on the left and right sides is pivotably mounted on the front end that is positioned at vehicle body frame 2 is by this way managed on 3, thereby can be by the described front fork of deflecting bar 6 controls.Turn to the handle 7 of usefulness to be installed in the top of deflecting bar 6.
Vehicle body frame 2 is so-called backbone (back bone) types, and from the beginning it has manages 3 person in charge 8 of downside diagonally extending and the spaces of the reduction between head pipe 3 and seat backward, and this space is used to make the passenger to drive easily.Left and right sides pivot plate 10 engages with the rearward end of being responsible for 8, and the front end that supports the swing arm 12 of trailing wheel 11 pivotly unsteadily is pivoted in the left and right sides pivot plate 10 each.
Be responsible for 8 rear portion and engage, between the rearward end of the left and right arms of the central part of the fore-and-aft direction of left and right sides seat frame 13 and swing arm 12, be separately installed with left and right sides rear shock absorber 14 with the front end of the left and right sides seat frame 13 of upside diagonally extending backward.The seat 9 that driver and back-seat passengers drove is installed in the upside of left and right sides seat frame 13.In addition, the pedal that reference character 15 expression drivers use, the pedal that reference character 16 expression back-seat passengers use.
Be installed in the inside (inner down) of the central lower of vehicle body frame 2 as the motor (internal-combustion engine) 20 of the prime mover that is used for motorcycle 1.This motor 20 is air cooling single-cylinder engines, and its bent axle is along overall width direction (left and right directions) and comprise cylinder block 22, and this cylinder block stretches out to front part of vehicle from the front end of the crankcase 21 of motor.Motor 20 is installed on the vehicle body frame 2 like this, that is: with the top of crankcase 21 rear sides and bottom support to left and right sides pivot plate 10, and by motor suspension 8a with the upper support of crankcase 21 to the central part of being responsible for 8 fore-and-aft direction.
For the cylinder head 24 on the top of cylinder block 22 (front end), the downstream side of throttle body 26 links to each other with the upside of cylinder head 24, and simultaneously, the cardinal extremity of outlet pipe 27 links to each other with the downside of cylinder head 24.The upstream of throttle body 26 links to each other with air filter case 26a, and this air filter case is supported to is responsible for 8 preceding bottom.
Describe with reference to Fig. 2, an end of outlet pipe 27 is crooked and extend forward from the bottom of cylinder head, thereby the lower-left side of cylinder block 22 earth tilt almost in parallel is extended.Then, outlet pipe 27 is crooked near the central authorities of overall width direction from the bottom of crankcase 21, and finally is connected to the front end (base end part) of the baffler 27a that is positioned at motor 20 rear portions.Catalytic converter 28 (hereinafter abbreviating catalyst converter (catalyst) sometimes as) with exhaust emission control function is tilted to down and is mounted in the left side cylinder block 22 (referring to Fig. 5) from outlet pipe 27.Baffler 27a from the base end part between the front end of the rear end that is clipped in motor 20 and trailing wheel 11 along extending beyond trailing wheel 11 to right, extend towards the rear portion afterwards, thereby when seeing from the side, this baffler is anterior overlapping this extension part place and trailing wheel 11, thereby forms roughly L shaped when the top is seen.
By being contained in the driving sprocket wheel 32 that clutch in the crankcase 21 and driving mechanism 31 (hereinafter with reference to Fig. 4 introduction) output to the left side that is positioned at crankcase 21 rear portions, and be delivered to driven sprocket 34 from driving sprocket wheel 32 from the torque of motor 20 in trailing wheel 11 left sides by chain drive-belt 33.
The cylinder block 22 of the front portion of vehicle body frame 2, motor 20, throttle body 26, air filter case 26a etc. are coated with the front vehicle body cover of being made by the synthetic resin material 35.Front vehicle body cover 35 also plays the effect of legging cover, is used for protecting driver's leg to avoid the pressure of the high wind of front region.Similarly, the rear portion of vehicle body frame 2 also is coated with the aftercarriage cover of being made by the synthetic resin material 36.Aftercarriage cover 36 and left and right sides seat frame 13 be supporting chair 9 together.In the rear portion of vehicle body frame 2, has the glove box 37 that is installed in below the seat 9.And the preceding downside of glove box 37 is equipped with fuel tank 38, and this fuel tank is supported to the front portion of left and right sides seat frame 13.
As shown in Figure 3, the cylinder block 22 of motor 20 has the axis C that is roughly parallel to (exactly being to make progress a little from the front portion) ground, and from the front end of crankcase 21 forward (direct of travel of vehicle) stretch out.In addition, cylinder block 22 comprises the cylinder main body 23 of the front end that is connected to crankcase 21, the cylinder head 24 of front end that is connected to cylinder main body 23 and the cylinder head cover 25 that is connected to the front end of cylinder head 24, and these parts are the main composition element.In the explanation hereinafter, the fore-and-aft direction parallel with the axis C (cylinder axis) in the cylinder block 22 can exchange with the fore-and-aft direction of cylinder and use, and can exchange use with the above-below direction of cylinder perpendicular to the above-below direction of axis C.
With reference to Fig. 4, have the casing bore 39 that forms along axis C in the cylinder main body 23, but and piston 40 to-and-fro motion be assemblied in this casing bore 39.The small end of connecting rod 41 can unsteadily be connected to piston 40 by the wrist pin of left and right directions, and the crank pin of the big end of connecting rod 41 by left and right directions is rotatably connected to bent axle 42.Bent axle 42 is by supporting crank pin along the left and right sides crankweb between the horizontal Y-axis (crank web).
The piston 40 that is positioned at top dead center by the front opening that covers casing bore 39 forms so-called shed roof shape firing chamber with cylinder head 24.Motor 20 among this embodiment is OHC (overhead camshaft) dual valve motors, thereby is formed with the combustion chamber side opening of suction port 49 and relief opening 50 in each of two inclination upsides of the roof of firing chamber formation portion 48 respectively.Here, combustion chamber openings opens or closes by intake valve 51 and exhaust valve 52 respectively.
Each valve 51 and 52 bar are approximately perpendicular to described inclination upside and extend forward obliquely, and pass the inwall of suction port 49 and relief opening 50, thereby the front end of intake rocker 55 or exhaust rocker arm 56 is assembled in its front end with inserting.Rocker arm 55 is located to contact slidably respectively with two cam projection (cam mountain) that the other end of 56 forms on single camshaft 57, and each valve 51 and 52 that is driven by camshaft 57 is along its bar to-and-fro motion, thereby the combustion chamber side opening of suction port 49 and relief opening 50 is opened and closed.Valve 51 and 52 bar, Rocker arm 55 and 56, camshaft 57 etc. are supported on the inboard of cylinder head 24 front portions, and are received into by the front portion of cylinder head 24 and are used for covering the valve system chamber that the cup-shaped cylinder head cover 25 of this cylinder head forms.
Driven sprocket 58 is fixed on the left part of camshaft 57 coaxially, and ring cam set chain 60 is wrapped in this driven sprocket 58 and is fixed on coaxially around the driving sprocket wheel 59 on the left part of bent axle 42.Like this, camshaft 57 rotates along same direction with bent axle 42, to open and close valve 51 and 52.In addition, the generator (not shown) is co-axially mounted on the left part of bent axle 42.
Describe with reference to Fig. 5, formed a plurality of radiating fin 61a and 61b outer the placing of cylinder block 22.Particularly, a plurality of heatsink transverse sheet 61a and cylinder axis C are arranged on the right side of cylinder main body 23 and cylinder head 24 with roughly meeting at right angles, are arranged on the upper and lower of cylinder main body 23 a plurality of vertical radiating fin 61b and cylinder axis C almost parallel.
Be formed with the cam chain chamber 62 that is used to hold cam chain 60 in the inside in cylinder block 22 left sides.This cam chain chamber 62 not only is used as the return passage that flows into crankcase 21 for the machine oil that flows out from cylinder head 24, and is used as the detection unit of machine oil.For this reason, cam chain chamber 62 comprises the oily temperature detecting sensor 63 that is used for the machines oil temperature.This oil temperature detecting sensor 63 can be by inserting from the left side of cylinder main body 23 that the ground assembling be arranged in the lower-left side of cylinder main body 23 and near crankcase 21 (referring to Fig. 8).And the reference character 60a among the figure represents the cam chain stretcher, and this cam chain stretcher is used for providing to cam chain 60 tension force of appointment.In addition, be placed with catalyst converter 28 in the bottom (on the left side under being tilted to) of cam chain chamber 62 from cylinder block 22.
Describe with reference to Fig. 6, cam chain chamber 62 forms flat space in the left side of cylinder main body 23 and cylinder head 24 by restriction left and right sides width.This space is centered on by inner wall part 62a and outside wall portions 62b, and the inwall of this inner wall part and cylinder is integral, and this outside wall portions has the U-shaped cross section, and this U-shaped cross section surrounds the outside of the last inner wall part 73 that upwards connects from inner wall part 62a.Owing to the outside wall portions 62b (left side of cylinder block 22) that is not directly delivered to cam chain chamber 62 from the ignition heat of casing bore 39, thereby this outside wall portions 62b is not provided with radiating fin.
As shown in Figure 6 and Figure 7, motor 20 has dual ignition plug, to increase output and to reduce fuel consumption by improving combustion performance.First spark plug 64 downside in the past is mounted obliquely within on the bottom of cylinder head 24, and second spark plug 65 is mounted obliquely within on the left side of cylinder head 24 from forward right side.For this reason, in the bottom of cylinder head 24 and left side, be drilled with first spark-plug hole 66 and second spark-plug hole 67 respectively, thereby each spark plug 64 and 65 is entered in the roof formation portion 48 in this cylinder head.Particularly, spark plug 64 and 65 passes its corresponding spark-plug hole 66 and 67 and be screwed in the tapped hole that is formed in the roof formation portion 48, thereby is fixed on the cylinder head 24, makes its front end electrode unit be positioned at the firing chamber simultaneously.
If see over to (to represent) about the arrow of cylinder axis C from cylinder axis, first spark plug 64 with respect to the fore-and-aft tilt of cylinder be arranged in and be approximately perpendicular in the horizontal plane, and its central axis is roughly parallel to the bearing of trend (being roughly parallel to vertically) of suction port 49 and relief opening 50.Simultaneously, if from cylinder axis to seeing over, second spark plug 65 is approximately perpendicular to cylinder longitudinally in the plane with respect to transversely slantingly being arranged in, and its central axis is approximately perpendicular to the bearing of trend (being roughly parallel to laterally) of suction port 49 and relief opening 50.In other words, if see over from the cylinder axis direction, each spark plug 64 and 65 forms roughly L shaped.First spark plug 64 is arranged to make its central axis to be positioned at the more left side of cylinder axis C with being biased, and second spark plug 65 is arranged to make its central axis to be positioned at the more top of cylinder axis C with being biased.
For cooling effectively bear the cylinder head 24 of big heat load (particularly spark-plug hole 66 and 67 around), motor 20 is provided with cooling air (air of advancing) the circuit air cover (cooling air channels) 69 that can make in the cylinder head 24.Air cover 69 is the spaces that form between the bottom 70 of roof formation portion 48 on cylinder head 24 rear sides and valve system chamber, be used to make between spark-plug hole 66 and 67 and be communicated with, and the lock(ing) bolt of reserving last inner wall part 73, cylinder main body 23 and the crankcase 21 of suction port formation portion 71 and relief opening formation portion 72, cam chain chamber 62 inserts the portion 74 of passing, or the like.Air cover 69 makes cooling air (air of advancing) reposefully around each spark-plug hole 66 and 67 circulations, and cooling air (air of advancing) is imported in the cylinder head 24, and the result has improved the cooling effectiveness in the cylinder head 24.
So the structure air overlaps 69, that is: the operation by two wind deflectors 78 and 79 (after a while introduce), be used as the air introducing port 75 of advancing from the bottom of cylinder head 24 to the circumference of first spark-plug hole 66 of under shed, and be used as the air discharge ports of advancing (hereinafter being referred to as the primary air floss hole) 76 to the circumference of second spark-plug hole 67 of right opening from the edge, right side of cylinder head 24.In other words, if see over from the cylinder axis direction, the main passage of the air of advancing in the air cover 69 bends to from the air introducing port 75 of advancing roughly L shaped to primary air floss hole 76.In addition, secondary air discharge ports 76a is installed, thereby will imports the upwards discharging of part of air of advancing the air cover 69 from the air introducing port 75 of advancing in the both sides of the suction port formation portion 71 on cylinder head 24 tops.In Fig. 6, represent that with dotted arrow air overlaps the flowing of the air of advancing of 69 inside.
The lock(ing) bolt that the air introducing port 75 (first spark-plug hole 66) of advancing is formed on relief opening formation portion 72 and lower-left side inserts and to pass between the portion 74, and primary air floss hole 76 (second spark-plug hole 67) is formed on the lock(ing) bolt of upper right side and inserts the lock(ing) bolt that passes portion 74 and right lower side and insert and pass between the portion 74.If see over from the cylinder axis direction, the width of the air introducing port 75 of advancing is narrower than the width of primary air floss hole 76, and first spark plug 64 forms and can insert relief opening formation portion 72 and lock(ing) bolt and insert and pass in the portion 74.Relief opening formation portion 72 (relief opening 50), advance air introducing port 75 and first spark plug 64 are substantially transversely arranged.On cylinder head 24, first spark plug 64 and the air introducing port 75 of advancing are arranged on the opposite side of exhaust sensor 68 with respect to relief opening formation portion 72 (relief opening 50).
Be provided with central flap 77 in air cover 69, if see over from the cylinder axis direction, this central flap 77 is along laterally crossing around the cylinder axis C.This central flap 77 is tabular, and is arranged in the top of vertical wall of air cover 69.Particularly, this central flap 77 is arranged between the central authorities and suction port formation portion 71 and relief opening formation portion 72 of L shaped air cover 69, and its left part downward-sloping (towards air introducing port 75 sides of advancing).By this central flap 77, from the air introducing port 75 of advancing import the air cover 69 advance air when having increased its area of contact by the primary air floss hole 76 that leads reposefully, and be split into pass through respectively spark plug 64 and 65 around, the result has improved the cooling effectiveness on the cylinder head 24.
As Fig. 8 and shown in Figure 9, first wind deflector 78 is installed in the bottom (road side) of cylinder head 24, so that the air introducing port 75 of advancing (first spark-plug hole 66) of air (representing with dotted arrow in Fig. 8) the guiding air cover 69 of will advancing.First wind deflector 78 is by being roughly parallel to horizontal plane main body 78a and a pair of shank 78b forms, and described main body is separated downwards with the air introducing port 75 of advancing, and described a pair of shank is used to support the two end part of corresponding wind deflector main body 78a.If see over from the cylinder axis direction, the fore-and-aft direction that first wind deflector 78 forms the U-shaped of the upward openings air passageways of advancing.The rear side of main body 78a is inclined upwardly, thereby is directed to the air introducing port 75 of advancing on top along the part of air of advancing of channel flow.First wind deflector 78 for example by the aluminum casting moulding be attached to cylinder head 24 the bottom in.
Rear portion (downstream side) at first wind deflector 78 is provided with oil temperature sensor 63, and in oil temperature sensor 63 dead aheads prone barrier 80 as barge board is arranged uprightly.Barrier 80 is roughly rectangular tabular with axis C, and for example is attached in the bottom of cylinder head 24 by the aluminum casting moulding.Barrier 80 has also reduced the unnecessary contact between oil temperature sensor 63 and the road barrier thing.
Simultaneously, second wind deflector 79 is installed in the bottom (road side) of cylinder head cover 25, and air enters first wind deflector 78 so that guiding is advanced.Second wind deflector 79 is by being roughly parallel to horizontal plane main body 79a and a pair of shank 79b forms, and described main body is separated downwards with the bottom of cylinder head cover 25, and described a pair of shank is used to support the two end part of wind deflector main body 79a.If see over from the cylinder axis direction, the fore-and-aft direction that second wind deflector 79 forms the U-shaped of the upward openings air passageways of advancing.The front end of second wind deflector 79 is arranged near the front end of cylinder head cover 25.It mainly acts on is the air of advancing that keeps touching the front end of cylinder head cover 25, subsequently it is carried to the rear portion, finally makes it enter first wind deflector 78.This second wind deflector 79 for example is attached in the bottom of cylinder head cover 25 by the aluminum casting moulding.
As Fig. 3 and shown in Figure 5, catalytic converter 28 is to be contained in the cylindrical housing of diameter greater than outlet pipe 27 and to constitute by for example having the honeycombed structure (whole block material) of the attached catalyst of platinum.Catalytic converter 28 almost is co-axially mounted on from cylinder block 22 towards the oblique offset position of lower-left inclination with the part of outlet pipe 27.Like this, when catalyst converter 28 is heated to when being used to add the predetermined temperature of fast response, through catalytic converter 28 time, purified fully from the exhaust of motor 20.Catalyst converter 28 is tiltedly placed from the lower-left inclination of cylinder block 22, that is to say, below cam chain chamber 62, thereby can not be directly delivered to the inwall of cylinder from the heat of thermocatalytic device 28.In addition, because catalyst converter 28 is arranged in the left side from the air introducing port 75 biasing ground of advancing of air cover 69, so the heat of catalyst converter 28 unlikely enters air and overlaps 69.
As mentioned above, first spark plug 64 and second spark plug 65 that the motor 20 of present embodiment comprises the cylinder head 24 that suction port 59 and relief opening 60 are installed and is connected to cylinder head 24, this first spark plug 64 and exhaust sensor 68 are installed in about on relief opening 50 both sides respect to one another.
According to said structure, described two spark plugs 64 and 65 and exhaust sensor 68 can be arranged into very effectively on the single cylinder head 24.In addition, exhaust sensor 68 triggers easily and can be from the accurate detected gas concentration of warming temperature.
In addition, be arranged on the cylinder head 24 in the same side of exhaust sensor 68, and be used to cool off the spark-plug hole 66 of corresponding spark plug 64 and 65 and the air cover 69 of 67 peripheral regions is installed in cylinder head 24 according to motor 20, the second spark plugs 65.This structure can be arranged two spark plugs 64 and 65 effectively away from exhaust sensor 68, and simultaneously, can suitably be controlled at flowing of the air of advancing in the air cover 69.Therefore, can improve spark-plug hole 66 and 67 and the outer wall of firing chamber around cooling effectiveness.
In addition, according to motor 20, advance air introducing port 75 and the exhaust sensor 68 of air cover 69 are installed in about on relief opening 50 both sides respect to one another.This structure help to advance conductance is gone in the air cover 69 and not can with exhaust sensor 68 interferences, thereby suitably control flowing of the air of advancing in the air cover 69.By this way, can improve spark-plug hole 66 and 67 and the outer wall of firing chamber around cooling effectiveness.
[embodiment 2]
Below with reference to Figure 10 and Figure 11 the second embodiment of the present invention is described.
This embodiment's motor (internal-combustion engine) 120 is compared the main difference part with first embodiment's motor and is: if see over from the cylinder axis direction, relief opening 50 extends obliquely towards the upper right side.The parts identical with first embodiment are represented with identical reference character, and are therefore omitted the explanation to these parts hereinafter.
In the cylinder head 124 of cylinder block 122, relief opening 50 has the bottom that is formed on roof formation portion 48, perhaps at the combustion chamber side opening on the more right side of cylinder axis C, and it is downward-sloping to the right from this combustion chamber side opening, thereby extend to the right lower side obliquely, until arriving outlet pipe assembly department 54, this outlet pipe assembly department from the more right side of cylinder axis C obliquely towards the right lower side opening.Like this, the relatively large space of the air introducing port 75 of having guaranteed to be used to advance, this space be also as the working space of dismounting first spark plug 64, and the air mass flows of advancing in the air cover 69 increase, thereby improved the cooling effectiveness on the cylinder head 24.
In addition, the present invention and not only be confined to the foregoing description, but can be implemented on dual overhead camshaft engine V (on cylinder head, having two camshafts that are used for air inlet and exhaust), direct-push engine (can directly drive valve and need not use rocking arm by camshaft), be equipped with motor, multicylinder engine or the water cooled engine of a plurality of intake valves and/or exhaust valve.
Although introduced the present invention in conjunction with various embodiments, these embodiments only are illustration.Therefore, according to above detailed description, those skilled in the art will know multiple replacement, modification and change.Above-mentioned explanation be intended to comprise in the spirit that drops on claims and the broad scope, comprise as substituting as described in the various vehicles of scooter and change whole.
[industrial applicability]
According to the present invention, two spark plugs and exhaust sensor can be arranged on the single cylinder cover very effectively. In addition, exhaust sensor triggers easily and can accurately detect gas concentration from warming temperature.
Claims (4)
1. internal-combustion engine, this internal-combustion engine comprise for being installed into the cylinder head of gas port and relief opening and being connected to two spark plugs on the described cylinder head,
Wherein, in the described spark plug one and exhaust sensor are installed in about on the described relief opening both sides respect to one another,
The air cover that cools off around the spark-plug hole that is used for corresponding spark plug is installed on described cylinder head,
Described two spark plugs are installed in the single air cover place that is arranged on the described cylinder head.
2. internal-combustion engine according to claim 1 is characterized in that,
Another spark plug is set on the described cylinder head in the same side of described exhaust sensor.
3. internal-combustion engine, this internal-combustion engine comprise for being installed into the cylinder head of gas port and relief opening and being connected to two spark plugs on the described cylinder head,
Wherein, on about described relief opening both sides respect to one another, exhaust sensor is installed and is installed in the air introducing port of advancing that the air on the described cylinder head overlaps,
Described two spark plugs are installed in the single air cover place that is arranged on the described cylinder head.
4. according to claim 1 or 3 described internal-combustion engines, it is characterized in that this internal-combustion engine also comprises cylinder block, this cylinder block is so that its axis is roughly parallel to the mode on ground is mounted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2006/300403 WO2007080654A1 (en) | 2006-01-13 | 2006-01-13 | Internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101111669A CN101111669A (en) | 2008-01-23 |
| CN101111669B true CN101111669B (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680000643XA Expired - Fee Related CN101111669B (en) | 2006-01-13 | 2006-01-13 | IC engine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4209441B2 (en) |
| CN (1) | CN101111669B (en) |
| AR (1) | AR058992A1 (en) |
| BR (1) | BRPI0605873B1 (en) |
| WO (1) | WO2007080654A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0815908B1 (en) * | 2007-08-24 | 2019-10-01 | Tvs Motor Company Limited | Cylinder Head Assembly with Spark Plug Housing |
| JP2009162084A (en) * | 2007-12-28 | 2009-07-23 | Honda Motor Co Ltd | Ignition plug arrangement structure for internal combustion engine |
| JP5497505B2 (en) * | 2010-03-23 | 2014-05-21 | 本田技研工業株式会社 | Spark plug cooling device for 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 |
| JP5554687B2 (en) * | 2010-11-10 | 2014-07-23 | 本田技研工業株式会社 | Exhaust gas sensor mounting structure |
| JP5771494B2 (en) * | 2011-09-28 | 2015-09-02 | 本田技研工業株式会社 | Variable valve operating device for internal combustion engine |
| JP5814059B2 (en) * | 2011-09-28 | 2015-11-17 | 本田技研工業株式会社 | Internal combustion engine |
| JP5806899B2 (en) * | 2011-09-29 | 2015-11-10 | 本田技研工業株式会社 | Internal combustion engine |
| CN103670771B (en) * | 2012-08-31 | 2016-03-16 | 光阳工业股份有限公司 | The heat-dissipating structure of engine cylinder head |
| JP5864063B2 (en) * | 2013-11-11 | 2016-02-17 | 本田技研工業株式会社 | Motorcycle exhaust gas sensor mounting structure |
| 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 |
| CN104343518A (en) * | 2014-11-07 | 2015-02-11 | 重庆鼎工机电有限公司 | General machine engine cooling structure |
| JP6000324B2 (en) * | 2014-12-05 | 2016-09-28 | 本田技研工業株式会社 | Internal combustion engine for saddle-ride type vehicles |
| DE102015013784A1 (en) * | 2015-10-20 | 2017-04-20 | Andreas Stihl Ag & Co. Kg | Hand-held implement |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337526A (en) * | 2000-08-03 | 2002-02-27 | 本田技研工业株式会社 | Spark-ignition four-stroke engine |
| CN1601063A (en) * | 2003-09-26 | 2005-03-30 | 本田技研工业株式会社 | Cooling air passway structure of cylinder cap |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11200913A (en) * | 1998-01-13 | 1999-07-27 | Honda Motor Co Ltd | Arrangement structure for exhaust gas sensor of internal combustion engine |
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2006
- 2006-01-13 BR BRPI0605873A patent/BRPI0605873B1/en not_active IP Right Cessation
- 2006-01-13 CN CN200680000643XA patent/CN101111669B/en not_active Expired - Fee Related
- 2006-01-13 JP JP2006520428A patent/JP4209441B2/en not_active Expired - Fee Related
- 2006-01-13 WO PCT/JP2006/300403 patent/WO2007080654A1/en active Application Filing
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2007
- 2007-01-11 AR ARP070100129 patent/AR058992A1/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337526A (en) * | 2000-08-03 | 2002-02-27 | 本田技研工业株式会社 | Spark-ignition four-stroke engine |
| CN1601063A (en) * | 2003-09-26 | 2005-03-30 | 本田技研工业株式会社 | Cooling air passway structure of cylinder cap |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0605873A2 (en) | 2009-05-26 |
| JP4209441B2 (en) | 2009-01-14 |
| BRPI0605873B1 (en) | 2018-10-23 |
| CN101111669A (en) | 2008-01-23 |
| WO2007080654A1 (en) | 2007-07-19 |
| JPWO2007080654A1 (en) | 2009-06-11 |
| AR058992A1 (en) | 2008-03-05 |
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