CN102022217B - Motor and there is the riding vehicle of this motor - Google Patents
Motor and there is the riding vehicle of this motor Download PDFInfo
- Publication number
- CN102022217B CN102022217B CN201010529832.4A CN201010529832A CN102022217B CN 102022217 B CN102022217 B CN 102022217B CN 201010529832 A CN201010529832 A CN 201010529832A CN 102022217 B CN102022217 B CN 102022217B
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- Prior art keywords
- cylinder
- motor
- oxygen concentration
- protuberance
- concentration sensor
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- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 131
- 239000001301 oxygen Substances 0.000 claims abstract description 131
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 130
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims description 69
- 239000003921 oil Substances 0.000 description 16
- 238000010304 firing Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 9
- 238000013022 venting Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000037361 pathway Effects 0.000 description 5
- 230000004913 activation Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Even if provide the high position of a kind of temperature of the Exhaust Gas in cylinder head to arrange oxygen concentration sensor, still can prevent oxygen concentration sensor stretching out to cylinder cap foreign side, suppress the motor of the size of motor and there is the riding vehicle of this motor.Motor (36) comprising: have the cylinder head (46) from head body (65) protuberance (66) outstanding outward; Be formed in the burning recess (70) on head body (65); For Exhaust Gas being discharged from burning recess (70), with the exhaust passageway (80) formed from the mode of burning recess (70) through protuberance (66); And there is the oxygen concentration sensor (50) of main part (118) and detection unit (120).Oxygen concentration sensor (50) with its main part (118) viewed from the direction from cylinder-bore axis A and detection unit (120) overlapping with protuberance (66), and the mode being positioned at exhaust passageway (80) at least partially of its detection unit (120), is arranged on protuberance (66).
Description
Technical field
The present invention relates to a kind of motor and there is the riding vehicle of this motor, particularly possess the motor of the oxygen concentration sensor of oxygen concentration for detecting Exhaust Gas about a kind of and there is the riding vehicle of this motor.
Background technique
As the conventional art of this respect, the scheme of proposition has the single-cylinder engine such as described in patent documentation 1.
With reference to Figure 19 (a) and (b), in the single-cylinder engine that patent documentation 1 discloses, cylinder head 1a be provided with on its outer circumferential face grand go out portion 2a, be formed through grand go out the exhaust passageway 3a of portion 2a.In addition, for detecting the oxygen concentration sensor 4a of the oxygen concentration of Exhaust Gas, be in the valve mechanism cover mounting flange 5a of cylinder head 1a and cylinder head 1a grand go out in recess between portion 2a, the cylinder-bore axis of opposite engine be mounted obliquely within grand go out on portion 2a.In addition, oxygen concentration sensor 4a, the mode being positioned at exhaust passageway 3a with its detection unit be arranged on grand go out on portion 2a.Such oxygen concentration sensor 4a, after being heated by the high temperature exhaust gas by exhaust passageway 3a, rapid temperature increases is to the temperature of this sensor activation.Like this, can form without heater-type oxygen concentration sensor.
In addition, other examples of conventional art are also disclosed in patent documentation 2.
With reference to Figure 20, in the single-cylinder engine that patent documentation 2 discloses, from the front of cylinder-bore axis, in the left side of cylinder head 1b, be formed with the space 2b held for the timing chain of drive cam shaft.In the bottom of cylinder head 1b, be formed with the relief opening 3b tilted to the right.In addition, for detecting the oxygen concentration sensor 4b of the oxygen concentration of Exhaust Gas, be arranged on cylinder head 1b, its detection unit is positioned at relief opening 3b.In this single-cylinder engine, oxygen concentration sensor 4b is also heated by the high temperature exhaust gas by relief opening 3b, and rapid temperature increases is to the temperature of this sensor activation.Like this, can form without heater-type oxygen concentration sensor.
In addition, in Figure 19 and Figure 20, crankshaft direction is defined as left and right directions, cylinder-bore axis direction is defined as fore-and-aft direction, the direction vertical with bent axle or the arbitrary side of cylinder-bore axis is defined as above-below direction.
Patent documentation 1: Japanese Patent No. 4152796 publications.
Patent documentation 2: Japanese Unexamined Patent Publication 2006-183489 publication.
The content of invention
The problem that invention will solve
Oxygen concentration sensor 4a in patent documentation 1, configure in the mode that the boss part 6a be combined with by cylinder head 1a and cylinder block, the valve mechanism cover that is arranged on cylinder head 1a front are not interfered., as shown in Figure 19 (b), although oxygen concentration sensor 4a avoids flange 5a, the front end of oxygen concentration sensor 4a will stretch out to the left of cylinder head 1a.
In addition, the oxygen concentration sensor 4b in patent documentation 2, arranges from relief opening 3b right side, avoids the interference of the left side with cylinder head 1b, valve mechanism cover with extending to the right., viewed from cylinder-bore axis direction during cylinder head 1b, the front end (right part in Figure 20) of oxygen concentration sensor 4b stretches out significantly to the right of cylinder head 1b.
Like this, no matter be the motor in patent documentation 1 or arbitrary document of patent documentation 2, oxygen concentration sensor or stretch out to cylinder head left, or stretch out to the right of cylinder head, the size of motor can be caused to become large.Particularly, for single-cylinder engine or V-type double-cylinder motor, originally had the characteristic that left and right directions is compacter, this characteristic of result also greatly receives damage.
Given this, main purpose of the present invention is, even if provide the high position of a kind of effluent air temp in cylinder head to arrange oxygen concentration sensor, still can prevent oxygen concentration sensor stretching out to cylinder head foreign side, suppress the motor of the size of motor and there is the riding vehicle of this motor.
The means solved the problem
According to a kind of form of the present invention, provide a kind of motor, this motor is single-cylinder engine or V-type double-cylinder motor, comprising: the cylinder head of protuberance having head body and give prominence to outward from head body; Be formed in the burning recess on head body; For Exhaust Gas being discharged from burning recess, with the exhaust passageway formed from the mode of the through protuberance of burning recess; For detecting the oxygen concentration of Exhaust Gas, there is main part and be arranged on the oxygen concentration sensor of the detection unit on main part.Oxygen concentration sensor install over the projections, its main part and detection unit overlapping with protuberance viewed from the direction of cylinder-bore axis, and its detection unit be positioned at exhaust passageway at least partially.
In the invention, the protuberance that cylinder head has head body and gives prominence to outward from head body, and be formed with the exhaust passageway of through protuberance.In addition, in its main part and detection unit and the mode that be at least partially positioned at exhaust passageway of its detection unit overlapping with protuberance viewed from the direction of cylinder-bore axis, oxygen concentration sensor is installed over the projections.Whereby, even if arrange oxygen concentration sensor in the position that effluent air temp is high, also can prevent oxygen concentration sensor from giving prominence to outward further from cylinder head.Like this, single-cylinder engine or the compact characteristic of V-type double-cylinder motor left and right directions can not be damaged, the size of single-cylinder engine or V-type double-cylinder motor can be suppressed.In addition, although the projection of cylinder head is given prominence to outward, due to the venting gas appliance in the cylinder head being arranged on this part can be shortened, so, the physical dimension of engine environment can not be increased.
Preferably, oxygen concentration sensor is installed over the projections in the mode of main body section in the position in detection unit front.In this case, avoid the interference of the Air flow fan float chamber of main part and cylinder block, oxygen concentration sensor can not stretch out in the lateral direction, is easily installed in cylinder head.
Preferably, the mode that oxygen concentration sensor is parallel to each other with the center line and cylinder-bore axis that make oxygen concentration sensor, installs over the projections.In this case, be easy to prevent oxygen concentration sensor stretching out to cylinder head foreign side.
Preferably, protuberance is given prominence at least downwards from head body.In this case, effectively can utilize the space below head body, protuberance is set well.
Preferably, protuberance, from cylinder-bore axis direction, is oliquely downward given prominence to from head body.In this case, the length of protuberance can be guaranteed, also can form cylinder head compactly.
Preferably, oxygen concentration sensor, from cylinder-bore axis direction, configures in the lateral direction highlightedly from head body.In this case, reliably can prevent oxygen concentration sensor stretching out to cylinder head foreign side, suppress the size of motor further.
Preferably, protuberance has the opening portion forming exhaust passageway downstream, and opening portion center, from cylinder-bore axis direction, can not be in the position that the left and right directions of head body is more outer.In this case, the stretching out of protuberance to cylinder head foreign side can be suppressed, suppress the size of motor further.
Preferably, the outer circumferential face of head body has the recess that side falls in head body viewed from cylinder-bore axis direction, and protuberance is formed on recess.In this case, because oxygen concentration sensor is arranged on the protuberance near recess, so, can restraining outburst portion stretching out to cylinder head foreign side.Like this, cylinder head can be formed compactly.
Preferably, recess is recessed into upward.In this case, the length of the protuberance being located at recess can be guaranteed, also can form cylinder head compactly.
Preferably, recess is recessed to side.In this case, the length of the protuberance be located on recess can be guaranteed, cylinder head can be formed compactly again.
Preferably, recess is formed in the mode making the bight of head body and fall in.In this case, the length of the protuberance be arranged on recess can be guaranteed, cylinder head can be formed compactly again.
Preferably, also comprise: be arranged on cylinder head front valve mechanism cover and for main body covered portion at least front, the sensor wrap portion be arranged in valve mechanism cover.In this case, available protuberance and sensor wrap portion cover the front and back of oxygen concentration sensor.Like this, when being equipped on riding vehicle by motor, can reliably protect oxygen concentration sensor from the impact of the slungshot from road surface etc.Sensor wrap portion in addition, because oxygen concentration sensor is installed over the projections overlappingly with protuberance viewed from the direction of cylinder-bore axis, and is positioned near cylinder head, so can not become large.
Preferably, comprise the valve mechanism cover being arranged on cylinder head front, cylinder head has the cover attachment face installing valve mechanism cover, and protuberance has the sensor attachment face installing oxygen concentration sensor, and cover attachment face and sensor attachment face are formed in parallel to each other.In this case, cover attachment face and sensor attachment face are formed easily via machining.
Preferably, also comprise the valve mechanism cover being arranged on cylinder head front, cylinder head has installs the cover attachment face of valve mechanism cover, and protuberance has the sensor attachment face installing oxygen concentration sensor, cover attachment face and sensor attachment face in the same plane.In this case, cover attachment face and sensor attachment face are formed by machining simultaneously, are easy to obtain cylinder head.
Preferably, also comprise: be arranged on the valve mechanism cover in cylinder head front and be connected to the electric wire configured on main part and along valve mechanism cover.In this case, electric wire can be configured in the mode leaving the exhaust passageway be formed in cylinder head.Like this, heat from the exhaust of exhaust passageway can be reduced on the impact of electric wire, the deterioration of electric wire can be suppressed.In addition, by electric wire is configured along valve mechanism cover, the necessary space of electric wire of drawing from motor can be reduced.
Preferably, the holding part be arranged in valve mechanism cover for keeping electric wire is also comprised.In this case, easily configured along valve mechanism cover by electric wire by holding part, distribution is more prone to.
According to motor of the present invention, oxygen concentration sensor stretching out to cylinder head foreign side can be prevented, suppress size of engine.Like this, as motor of the present invention is used for two-wheeled riding vehicle of Denging, riding vehicle can be suppressed to become large.
Preferably, cylinder-bore axis forwards tilts oblique upper.In this case, motor stretching out downwards can be suppressed.Therefore, this structure is applicable to the riding vehicle comprising single-cylinder engine or V-type double-cylinder motor very much.
In the present invention, " foreign side " of so-called cylinder head, refers to vertical with cylinder-bore axis and from cylinder-bore axis with the direction of radiated entends, not only comprises left and right directions, also comprising above-below direction.
In addition, so-called " main part and detection unit overlapping with protuberance viewed from cylinder-bore axis direction ", refer to from cylinder-bore axis direction, main part and detection unit can not be stretched from the profile of protuberance.
Above-mentioned purpose of the present invention and other objects, feature, form and advantage, will be more readily apparent from clear by the detailed description of the invention process form of hereafter carrying out along with accompanying drawing.
The effect of invention
According to the present invention, even if the position that effluent air temp is high in cylinder head arranges oxygen concentration sensor, also can prevent oxygen concentration sensor stretching out to cylinder head foreign side, suppress size of engine.
Accompanying drawing explanation
Fig. 1 is the two-wheeled left side view representing an embodiment of the present invention.
Fig. 2 represents Power Component, trailing wheel and neighbouring left side view thereof.
Fig. 3 represents body framework, Power Component, trailing wheel and the neighbouring explanatory drawing thereof seen from cylinder-bore axis front.
Fig. 4 is the explanatory drawing of the motor representing an embodiment of the present invention seen from cylinder-bore axis front.
Fig. 5 is the right side view representing motor major component.
Fig. 6 is the stereogram representing motor major component.
Fig. 7 is the part sectioned view representing I-I line in Fig. 4.
Fig. 8 is the sectional drawing representing II-II line in Fig. 5.
Fig. 9 is the explanatory drawing of the motor representing the another embodiment of the present invention seen from cylinder-bore axis front.
Figure 10 is the local outline right side view of the part representing the motor example installing air shield.
Figure 11 (a) represents the major component of the valve mechanism cover example being formed with a sensor wrap part seen from cylinder-bore axis front and neighbouring explanatory drawing thereof, and Figure 11 (b) is its stereogram.
Figure 12 (a) represents the major component being formed with another example of the valve mechanism cover of a sensor wrap part and neighbouring explanatory drawing thereof seen from cylinder-bore axis front, and Figure 12 (b) is its stereogram.
Figure 13 is partial cross section's explanatory drawing of the motor representing another embodiment of the present invention.
Figure 14 is the motor explanatory drawing representing the another embodiment of the present invention seen from the front of cylinder-bore axis.
Figure 15 represents that oxygen concentration sensor is mounted obliquely within the explanatory drawing of the installment state major component on protuberance.
Figure 16 is the cross section explanatory drawing of the III-III line shown in Figure 15.
Figure 17 (a) is partial cross section's explanatory drawing of the V-type double-cylinder motor representing another embodiment of the present invention, and Figure 17 (b) is the explanatory drawing of this motor arrived seen from above.
Figure 18 is the two-wheeled left side view representing another embodiment of the present invention.
Figure 19 (a) and (b) are the stereograms of the cylinder head representing patent documentation 1.
Figure 20 is the sectional drawing of the cylinder head representing patent documentation 2.
Symbol description
10, 10, 10a-two-wheeled 36, 36a, 36b, 36c, 36d, 36e-motor, 40-bent axle, 42-crankcase, 44-cylinder block, 46, 46a, 46b-cylinder head, 48-valve mechanism cover, 50, 50a-oxygen concentration sensor, 65-head body, 66, 66a-protuberance, 68-recess, 70-burns recess, 72, 78, 78a-opening portion, 79-opening portion center, 80, 80a-exhaust passageway, 110-cover attachment face, 112, 112a-sensor attachment face, 118, 118a-main part, 120-detection unit, 124, 124a, 124b-electric wire, 140-holding part, 144, 144a-sensor wrap portion, A-cylinder-bore axis, B-central axis.
Embodiment
Hereafter, with reference to accompanying drawing, embodiments of the present invention are described.
In addition, in motor of the present invention, crankshaft direction is defined as left and right directions, cylinder-bore axis direction is defined as fore-and-aft direction, be defined as above-below direction with bent axle or either party vertical direction of cylinder-bore axis.The invention process form two-wheeled in, with driver towards handlebar and the state sat on two-wheeled vehicle seat for benchmark, definition left and right directions, fore-and-aft direction and above-below direction.Crosswise arrow in accompanying drawing represents direction, and " F " represents front, and " Rr " represents rear, and " U " represents top, and " Lo " represents below, and " R " represents right, and " L " represents left.
Fig. 1 is the left side view of the so-called scooter type two-wheeled 10 representing the motor 36 with an embodiment of the present invention.
With reference to Fig. 1, two-wheeled 10 comprise body framework 12.Above the front portion of body framework 12 and below, be respectively arranged with handlebar 14 and front-wheel 16.The vehicle seat 18 that driver takes is provided with at the rear upper of body framework 12.Along body framework 12 between handlebar 14 and vehicle seat 18, be provided with the pedal 20 that driver puts pin.It is identically to be formed continuously to heavens that pedal 20 places right crus of diaphragm and the part of left foot with the driver rided on vehicle seat 18.Like this, between handlebar 14 and vehicle seat 18, above pedal 20, form larger space.Body framework 12 is to arrange by the mode below pedal 20.
Body framework 12 comprises a pair vehicle frame 22 (with reference to Fig. 3) that left and right configures discretely.A pair vehicle frame 22 is arranged at left and right directions phase mutual predetermined distance, and extends towards oblique upper, rear.On a pair vehicle frame 22, freely up and down can swingingly support dynamic assembly 26 by linkage mechanism 24.
Linkage mechanism 24 has: the pivot 28 connecting a pair vehicle frame 22; And connect pivot 28 and Power Component 26 and the linkage component 30 that can freely up and down swingingly arrange centered by pivot 28.
Power Component 26 is arranged on the below of vehicle seat 18, is linked together in the rear portion of Power Component 26 and vehicle frame 22 by posterior bumper assembly 32.The rearward end of Power Component 26 is provided with trailing wheel 34.
Fig. 2 represents Power Component 26, trailing wheel 34 and neighbouring left side view thereof.Fig. 3 represents body framework 12, Power Component 26, trailing wheel 34 and the neighbouring explanatory drawing thereof seen from the front of cylinder-bore axis A.
Power Component 26 has the motor 36 of such as air-cooling type single cylinder and comprises the transmission case 38 holding the actuating unit such as speed changer, retarder (not shown).
See in the side of two-wheeled 10, motor 36 intersects with vehicle frame 22.Motor 36 comprises: bent axle 40, crankcase 42, cylinder block 44, cylinder head 46 and valve mechanism cover 48.Crankcase 42, cylinder block 44, cylinder head 46 and valve mechanism cover 48 are forwards sequentially arranged on the cylinder-bore axis A of motor 36 from the rear of vehicle fore-and-aft direction.Crankcase 42, cylinder block 44, cylinder head 46 and valve mechanism cover 48 are connected with adjacent parts.As shown in Figures 1 and 2, cylinder-bore axis A relative vehicle fore-and-aft direction toward the front oblique upper tilts, and in this form of implementation, some tilts a little.
Crankcase 42 rotatably supports the bent axle 40 that left and right directions extends.As shown in Figure 3, the right part of crankcase 42 is arranged on vehicle frame 22 rear.In addition, cylinder block 44, cylinder head 46 and valve mechanism cover 48, from cylinder-bore axis A direction, are arranged between pairing left and right vehicle frame 22, are arranged to swing along above-below direction uninterruptedly with vehicle frame 22 to make Power Component 26.
Transmission case 38 is in the rear of vehicle frame 22, is located at the left of crankcase 42.In the rearward end of transmission case 38, trailing wheel 34 is rotatably installed.Trailing wheel 34, at motor 36 rear, is set up in parallel in the vehicle width direction with transmission case 38.The driving force that motor 36 produces is delivered on trailing wheel 34 by actuating unit.
As mentioned below, in cylinder head 46, be provided with the oxygen concentration sensor 50 of the oxygen concentration for detecting the Exhaust Gas of discharging from the firing chamber 90 (the burning recess 70 of cylinder head 46) of motor 36 and the oil temperature sensor 52 for the temperature that detects the engine oil flowing through motor 36.In addition, at the upper surface of cylinder head 46, be connected with inlet air pathway 74 via motor 36 to the air inlet system 54 of firing chamber 90 air supply.In the bottom of cylinder head 46, be connected with the venting gas appliance 56 of being discharged by Exhaust Gas from the firing chamber 90 of motor 36 via exhaust passageway 80.
With reference to Fig. 4 ~ Fig. 8, describe motor 36 in detail.
Fig. 4 is the explanatory drawing representing the motor 36 obtained from the forward observation of cylinder-bore axis A.Fig. 5 is the right side view representing motor 36 major component.Fig. 6 is the stereogram representing motor 36 major component.Fig. 7 is the part sectioned view representing I-I line in Fig. 4.Fig. 8 is the sectional drawing representing II-II line in Fig. 5.
Cylinder block 44 has Air flow fan 58 at its outer side surface, has the cylindric cylinder-bore 60 extended in cylinder-bore axis A direction therein.Reciprocating piston 62 is provided with in cylinder-bore 60.Piston 62 is connected on bent axle 40 via connecting rod 64.In addition, so-called cylinder-bore axis A is the central axis of cylinder-bore 60.
Cylinder head 46 has head body 65 and protuberance 66.Protuberance 66 is arranged on the outer circumferential face of head body 65, and the foreign side to head body 65 is outstanding.With reference to Fig. 4 and Fig. 6, the outer circumferential face of head body 65 has forniciform recess 68 recessed towards side in head body 65 viewed from cylinder-bore axis A direction.That is, recess 68 is recessed into upward from the lower surface 65a of head body 65.In addition, recess 68 is recessed to side (in this form of implementation, from the right side 65b of head body 65 to the left).Further, recess 68 is formed in the mode making the bight of head body 65 and cave in.In other words, recess 68 is formed in the mode extended along the direction of cylinder-bore axis A on the outer circumferential face of head body 65.
Protuberance 66, from the front of cylinder-bore axis A, is formed on recess 68.Protuberance 66 from the front of cylinder-bore axis A, to be formed from head body 65 mode that tiltedly below is outstanding to the right.In addition, oxygen concentration sensor 50, from cylinder-bore axis A direction, is configured to the form can not given prominence in the lateral direction from head body 65.
As shown in Figure 7, burning recess 70 is formed with in the rear end of the head body 65 be included in cylinder head 46.Burning recess 70 is communicated with via inlet air pathway 74 with the opening portion 72 of cylinder head 46 upper surface.The opening towards burning recess 70 of inlet air pathway 74 is as suction port 76.Opening portion 72 is connected with air inlet system 54.Burning recess 70 is communicated with via exhaust passageway 80 with the opening portion 78 of protuberance 66.The opening towards burning recess 70 of exhaust passageway 80 is as relief opening 82.The opening portion 78 of protuberance 66 is connected with venting gas appliance 56.Its end of venting gas appliance 56 is provided with flange part 84, flange part 84 is arranged on protuberance 66 with stud bolt 86 and nut 88.
With reference to Fig. 4, viewed from the front of cylinder-bore axis A during motor 36, the relative above-below direction (direction vertical with bent axle 40 and cylinder-bore axis A any one party) of exhaust passageway 80 be formed in cylinder head 46 tilts and is formed extended at both sides downwards.More particularly, viewed from the front of cylinder-bore axis A during motor 36, be formed in exhaust passageway 80 in cylinder head 46 to be formed from firing chamber 90 (burning recess 70) and relief opening 82 mode that tiltedly below extends to the right.In addition, as the protuberance 66 of the downstream of exhaust passageway 80 opening portion 78 relatively above-below direction towards true dip direction.More particularly, as the opening portion 78 of the protuberance 66 of exhaust passageway 80 downstream towards the right side oblique below.Further, the center 79 of opening portion 78, from cylinder-bore axis A direction, can not be in the position of the more outer side of left and right directions of head body 65.Like this, exhaust passageway 80 is also formed on protuberance 66.Exhaust passageway 80 extends along the direction leaving the transmission part 98 and rotary component 100 (aftermentioned) being arranged on motor 36 left part.In addition, the space that firing chamber 90 surrounds by means of cylinder-bore 60 and piston 62 is formed with the recess 70 that burns.
In motor 36, air imports firing chamber 90 by air inlet system 54 and inlet air pathway 74.Exhaust Gas is discharged from firing chamber 90 by exhaust passageway 80 and venting gas appliance 56.
With reference to Fig. 7, motor 36 also comprises: valve actuator 92, suction valve 94 and outlet valve 96.
Valve actuator 92 comprises: transmission part 98, rotary component 100, camshaft 102, cam 104 and arm member 106,108.Transmission part 98 comprises such as metal chain, in order to be delivered on rotary component 100 by the rotation of bent axle 40, bent axle 40 and rotary component 100 is linked together.Rotary component 100 is made up of such as sprocket wheel, is rotated by transmission part 98.By rotary component 100, camshaft 102 is rotated, by the cam 104 be located on camshaft 102, arm member 106,108 is swung.In addition, suction valve 94 is by arm member 106 opening and closing suction port 76, and outlet valve 96 is by arm member 108 opening and closing relief opening 82.
Cylinder head 46 has the cover attachment face 110 for installing valve mechanism cover 48.As shown in figures 4-6, by the fixed components 111 such as such as multiple (being 2 in the present embodiment) bolts are installed before valve mechanism cover 48, valve mechanism cover 48 is fixed in cylinder head 46.Adopting such structure, by being installed on cover attachment face 110 by valve mechanism cover 48, just can save the flange that the valve mechanism cover in cylinder head 46 is installed.Like this, on cylinder-bore axis A direction, oxygen concentration sensor 50 can be set with extending.As fixed component 111, stud bolt and the general fixed component such as nut or rivet can be used.
Protuberance 66 has sensor attachment face 112, and sensor attachment face 112 is installed oxygen concentration sensor 50.
Cover attachment face 110 and sensor attachment face 112 are formed in parallel to each other.
Here, should be noted that, for detecting the oxygen concentration sensor 50 of the oxygen concentration of the Exhaust Gas by exhaust passageway 80, in mode overlapping with the protuberance 66 of cylinder head 46 viewed from the direction from cylinder-bore axis A, be arranged on the sensor attachment face 112 of protuberance 66.So-called " oxygen concentration sensor 50 is overlapping with protuberance 66 viewed from the direction of cylinder-bore axis A ", refer to the direction from cylinder-bore axis A, oxygen concentration sensor 50 can not stretch out from the profile of protuberance 66.As mentioned below, the central axis B of oxygen concentration sensor 50, can be parallel with cylinder-bore axis A, can also relatively tilt by cylinder-bore axis A.
On sensor attachment face 112, be formed with cylinder-bore axis A the mounting hole 114 being communicated with exhaust passageway 80 abreast.Mounting hole 114 has recessed screw section 116.
Oxygen concentration sensor 50 comprises: the main part 118 of column; And arrange with main part 118 is coaxial and is located at the cylindric detection unit 120 on one end of main part 118.The column that oxygen concentration sensor 50 is greater than radius with axle direction length is formed.Main part 118 has convex thread portion 122.In this form of implementation, the diameter of main part 118 is non-constant, different because of axial position.
When oxygen concentration sensor 50 is arranged on protuberance 66, detection unit 120 is inserted in mounting hole 114, make it in the face of the inside of exhaust passageway 80, convex thread portion 122 is screwed in recessed screw section 116.By oxygen concentration sensor 50 to make main part 118 and detection unit 120 mode overlapping with the protuberance 66 of cylinder head 46 viewed from the direction from cylinder-bore axis A, be arranged on protuberance 66.In addition, oxygen concentration sensor 50 is arranged on protuberance 66 along recess 68.In other words, the oxygen concentration sensor 50 of column is arranged along the direction that recess 68 extends.Under the installment state of oxygen concentration sensor 50, the central axis B of oxygen concentration sensor 50 is parallel with cylinder-bore axis A, detection unit 120 be positioned at exhaust passageway 80 at least partially.
In the other end of main part 118, be connected with the connector 125 of electric wire 124.In this form of implementation, electric wire 124 is that opposing body portion 118 can freely load and unload.The detection unit 120 of oxygen concentration sensor 50 is consisted of the zirconium comprising such as stabilization, can carry out correct detection more than the sensor activation temperature of regulation.Detection unit 120 at least partially owing to being positioned at the exhaust passageway 80 of high temperature exhaust gas process, so detection unit 120 is heated by Exhaust Gas.Therefore, oxygen concentration sensor 50 can promptly reach sensor activation temperature.Like this, as oxygen concentration sensor 50, can use there is no need for heat detection unit 120 independent heating equipment without heater-type sensor, oxygen concentration sensor 50 can be reduced, and will reduce costs.
The testing signal of oxygen concentration sensor 50 flows to engine controlling unit 126 via electric wire 124.Engine controlling unit 126, according to the testing signal sent, will supply the fuel sky of firing chamber 90 so than controlling to optimal state.Specifically, engine controlling unit 126 drives the Fuelinjection nozzle 128 be arranged on air inlet system 54, injects fuel in the air being supplied in firing chamber 90.
In addition, as shown in Fig. 4, Fig. 6 and Fig. 8, cylinder head 46 is provided with oil temperature sensor installation boss part 130 on its lateral surface.Boss part 130 is formed in the top of the right flank of cylinder head 46.The boss hole 132 of boss part 130 is communicated with the oily path 134 of the inside being formed in cylinder head 46.Oil path 134 is formed abreast with cylinder-bore axis A.In addition, in cylinder head 46, form the accommodating part 136 of camshaft 102.Accommodating part 136 is communicated with by oily path 138 with boss hole 132.Oil temperature sensor 52 is arranged in this boss part 130.
When rotating with the bent axle 40 that crankcase 42 is supported, drive oil pump via the idler gear in crankcase 42.So, by oil from oil pump via the oily path be formed in crankcase 42, the oily path 134 that is formed in crankcase 42 and the oily path on the surface of contact of cylinder block 44, is formed in the oily path in cylinder block 44 and is formed in cylinder head 46, be supplied to camshaft 102 and valve actuator 92.In addition, oil is supplied from oil pump to bent axle 40 and oil cooler.Like this, all the time oil is supplied to the circuit directly connected forcibly from oil pump in the rotation of bent axle 40.
Oil temperature sensor 52 is arranged on close to ground, firing chamber 90 position that in the rotation of bent axle 40, oil flows all the time.Like this, in the rotation of bent axle 40, by oil temperature sensor 52, Absorbable organic halogens correctly detects the temperature of firing chamber 90, i.e. the temperature of motor 36.The checkout value of oil temperature sensor 52 is used for setting, the correction of fuel spray volume.
According to having two-wheeled 10 of such motor 36, the right side of cylinder head 46 on the outer circumferential face of head body 65 tiltedly under face on be provided with protuberance 66, exhaust passageway 80 with from firing chamber 90 to the right tiltedly below to extend and the mode of through protuberance 66 is formed.The opening portion 78 of protuberance 66 downstream is oblique below towards the right side.In addition, viewed from the direction of cylinder-bore axis A the main part 118 of oxygen concentration sensor 50 and detection unit 120 overlapping with protuberance 66, and its detection unit 120 be positioned at exhaust passageway 80 at least partially, in the above described manner oxygen concentration sensor 50 is arranged on protuberance 66.
Whereby, even if arrange oxygen concentration sensor 50 on the protuberance 66 of the high position of effluent air temp and cylinder head 46, also can prevent oxygen concentration sensor 50 from stretching out in foreign side's (particularly left and right directions) of cylinder head 46.Like this, the characteristic that single-cylinder engine 36 is compact in the lateral direction can not be damaged, the size of single-cylinder engine 36 can be suppressed.In addition, oxygen concentration sensor 50 forwards can not be given prominence to from valve mechanism cover 48.Therefore, oxygen concentration sensor 50 stretching out on the fore-and-aft direction of motor 36 can also be prevented.Further, in motor 36, the front end due to valve actuator 92 is positioned at the more front of exhaust passageway 80, so the distance in the cylinder-bore axis A direction from the sensor attachment face 112 of protuberance 66 to the front surface of valve mechanism cover 48 is sufficiently long.More particularly, the distance in the cylinder-bore axis A direction from the sensor attachment face 112 of protuberance 66 to the front surface of valve mechanism cover 48, is greater than the length of the part exposed from sensor attachment face 112 on oxygen concentration sensor 50.Like this, can not be outstanding significantly to the front of motor 36 with the electric wire 124 that oxygen concentration sensor 50 is connected, the requisite space of electric wire 124 distribution can be reduced.In addition, although cylinder head 46 is given prominence to outward there to be the amount of protuberance 66, due to shorten be arranged on this part cylinder head 46 on venting gas appliance 56, so, the size of engine environment structure can not be increased.
Particularly, the motor 36 of this form of implementation, the distance in the cylinder-bore axis A direction from the sensor attachment face 112 of protuberance 66 to the front surface of valve mechanism cover 48 is sufficiently long, and the column that oxygen concentration sensor 50 is greater than radius with its axle direction length is formed.By adopting such formation, be easy to oxygen concentration sensor 50 to be installed in cylinder head 46 in the mode overlapping with protuberance 66 viewed from cylinder-bore axis A direction, therefore, the present invention has special effect.
The mode that oxygen concentration sensor 50 is positioned at detection unit 120 anterior position with main part 118 is arranged on protuberance 66.Like this, avoid main part 118 and the Air flow fan 58 of cylinder block 44, the interference of crankcase 42, oxygen concentration sensor 50 can not stretch out in the lateral direction, is easily installed in cylinder head 46.
Oxygen concentration sensor 50 is arranged in cylinder head 46 in the mode that its central axis B is parallel relative to cylinder-bore axis A.Like this, be easy to prevent oxygen concentration sensor 50 in the lateral direction and the stretching out of below.
Protuberance 66 is given prominence at least downwards from head body 65.Like this, effectively can utilize the space below head body 65, protuberance 66 is set well.
Protuberance 66, from cylinder-bore axis A direction, is oliquely downward given prominence to from head body 65.Like this, the length of protuberance 66 can be guaranteed, also can form cylinder head 46 compactly.
Oxygen concentration sensor 50, from cylinder-bore axis A direction, is configured to the form can not given prominence in the lateral direction from head body 65.Therefore, reliably can prevent oxygen concentration sensor 50 stretching out to cylinder head 46 foreign side, suppress the size of motor 36 further.
Protuberance 66 has the opening portion 78 of downstream forming exhaust passageway 80, and the center 79 of opening portion 78, from cylinder-bore axis A direction, can not be in than the position of head body 65 the more outer side of left and right directions.Like this, can restraining outburst portion 66 stretching out to cylinder head 46 foreign side, the further size of suppression motor 36.
The outer circumferential face of cylinder head body 65 has the recess 68 of side's depression in head body 65 viewed from cylinder-bore axis A direction, and protuberance 66 is formed on recess 68.If adopt such structure, owing to oxygen concentration sensor 50 can be arranged on the protuberance 66 near recess 68, so, can restraining outburst portion 66 stretching out to cylinder head 46 foreign side.Like this, cylinder head 46 can be formed compactly.
Recess 68 upward and side be recessed into.In addition, recess 68 is formed to make the recessed mode in the bight of head body 65.Like this, the length of the protuberance 66 be located on recess 68 can be guaranteed, cylinder head 46 can be formed compactly again.
Cover attachment face 110 and sensor attachment face 112 are formed in parallel to each other.Therefore, cover attachment face 110 and sensor attachment face 112 are formed easily via machining.
Because cylinder-bore axis A forwards tilts oblique upper, so, motor 36 stretching out downwards can be suppressed.Like this, this structure is applicable to the riding vehicle comprising single-cylinder engine or V-type double-cylinder motor very much.
In addition, in above-mentioned form of implementation, although have employed linkage mechanism 24, also linkage mechanism 24 can not be set, but be set directly at swingable for Power Component about 26 on body framework 12.
The belt that transmission part 98 can also be made by such as rubber is formed.In this case, rotary component 90 becomes belt pulley.
Fig. 9 is the explanatory drawing of the motor 36a representing the another embodiment of the present invention seen from the front of cylinder-bore axis A.
In motor 36a, replace oxygen concentration sensor 50, use the oxygen concentration sensor 50a with electric wire 124a, replace electric wire 124 with electric wire 124b, valve mechanism cover 48 is formed holding part 140.Because other formations are identical with the motor 36 shown in Fig. 4 ~ Fig. 7, so, eliminate the repeat specification to it.
Oxygen concentration sensor 50a, is connected to one end of electric wire 124a in the inside of its main part 118a, electric wire 124a draws from main part 118a.The other end of electric wire 124a is connected on engine controlling unit 126 via electric wire 124b.In addition, electric wire 124a and 124b has connector 125a and 125b respectively.By connector 125a and 125b is linked together, electric wire 124a and electric wire 124b is coupled together.
At the front surface of valve mechanism cover 48, be provided with multiple (being 4 in this form of implementation) holding part 140.By these holding parts 140, remain connected to the electric wire 124a on oxygen concentration sensor 50a main part 118.Holding part 140 and valve mechanism cover 48 form, and also can be formed as separate part.In addition, holding part 140 can also be by the cementability be pressed in valve mechanism cover 48 or adhering strip-shaped members by electric wire 124a.Further, holding part 140 can also be by electric wire 124a and keep the substantially C-shaped of electric wire 124a or the parts of U-shaped.In addition, as shown in the dotted line of Fig. 9, holding part 140 can also be formed on the right flank of valve mechanism cover 48.Further, holding part 140 can also be formed in any one of the left surface of valve mechanism cover 48, upper surface or lower surface.
By such holding part 140 to keep electric wire 124a along the mode of valve mechanism cover 48, electric wire 124a can be configured in the mode leaving the exhaust passageway 80 be formed in cylinder head 46.Like this, the impact of heat on electric wire 124a from the exhaust of exhaust passageway 80 is minimum, can suppress the deterioration of electric wire 124a.In addition, by electric wire 124a is configured along valve mechanism cover 48, the requisite space of drawing electric wire 124a from motor 36a can be reduced.In addition, by utilizing holding part 140, be easy to configuration electric wire 124a.
In addition, holding part 140 also may be used in previous form of implementation.In this case, utilize holding part 140, remain connected to the electric wire 124 on oxygen concentration sensor 50.
Figure 10 is the local outline right side view representing motor 36 part being provided with air shield 142.
As shown in Figure 10, air shield 142 installed by the motor 36 shown in Fig. 4 ~ Fig. 7, the surface of air shield 142 forms holding part 140, remained connected to the electric wire 124 on oxygen concentration sensor 50 by holding part 140, such structure is also feasible.Further, also holding part 140 can be arranged in cylinder head 46.
Figure 11 (a) represents valve mechanism cover 48 major component being formed with sensor wrap portion 144 and neighbouring explanatory drawing thereof seen from the front of cylinder-bore axis A, and Figure 11 (b) is its stereogram.
As shown in Figure 11 (a) and (b), also can corner part near the oxygen concentration sensor 50 in valve mechanism cover 48, form sensor wrap 144.
Sensor wrap portion 144 has the cover anterior 146 in main part 118 front covering oxygen concentration sensor 50 and the cover sidepiece 148 of foreign side of main body covered portion 118 part.Here, " foreign side " of so-called main part 118, refers to vertical with the central axis B of oxygen concentration sensor 50 and from central axis B with the direction of radiated entends.
When being mounted on two-wheeled 10 by the motor 36 with the valve mechanism cover 48 defining this sensor wrap portion 144, can reliably protect oxygen concentration sensor 50 from the impact of the slungshot from road surface etc.In addition, oxygen concentration sensor 50 is arranged on overlappingly protuberance 66 with protuberance 66 viewed from the direction of cylinder-bore axis A.And be positioned near cylinder head 46.Like this, sensor wrap portion 144 is not too large.
Figure 12 (a) represents valve mechanism cover 48 major component of the formation sensor wrap portion 144a seen from cylinder-bore axis A front and neighbouring explanatory drawing thereof, and Figure 12 (b) is its stereogram.
As shown in Figure 12 (a) and (b), also can corner part near the oxygen concentration sensor 50 in valve mechanism cover 48, independent sensor wrap portion 144a is installed by fixed components 150 such as such as bolts.Sensor wrap portion 144a has the anterior 146a of cover in main part 118 front covering the oxygen concentration sensor 50 and cover sidepiece 148a of foreign side of main body covered portion 118 part.
In this case, the effect same with using the situation of the motor 36 with the valve mechanism cover 48 defining sensor wrap portion 144 can be obtained.
In addition, fixed component 150 is not defined as bolt, can also use any parts that can be fixed.In addition, in order to prevent the sensor wrap portion 144a be arranged in valve mechanism cover 48 from rotating, can also in valve mechanism cover 48 setting example as the spline parts (not shown) of overshooting shape.
As oxygen concentration sensor, as shown in Figure 9, even if when using oxygen concentration sensor 50a, also sensor wrap 144,144a can be formed in valve mechanism cover 48.
In addition, sensor wrap portion 144,144a preferably in the mode in the main part 118 covering oxygen concentration sensor 50 at least front, are respectively equipped with cover front portion 146,146a.
Figure 13 is partial cross section's explanatory drawing of the motor 36b representing another embodiment of the present invention.
With reference to Figure 13, be included in the cylinder head 46a in motor 36b, its cover attachment face 110 installing valve mechanism cover 48 is in the same plane with the sensor attachment face 112a installing oxygen concentration sensor 50.That is, cover attachment face 110 and sensor attachment face 112a are formed on the same face mutually.Because other formations are identical with the motor 36 shown in Fig. 7, eliminate its description.
In this case, cover attachment face 110 and sensor attachment face 112a are formed by machining simultaneously, more easily obtain cylinder head 46a.
Figure 14 is the explanatory drawing of the motor 36c representing the another embodiment of the present invention seen from the front of cylinder-bore axis A.
Motor 36c shown in Figure 14, replaces the cylinder head 46 with protuberance 66, uses the cylinder head 46b with protuberance 66a.
Viewed from the front of cylinder-bore axis A during motor 36c, protuberance 66a gives prominence to downwards from cylinder head 46b, as opening portion 78a tiltedly below formation towards a left side of exhaust passageway 80 downstream.In addition, the exhaust passageway 80a be formed on cylinder head 46b is formed in the mode extended downwards from firing chamber 90 and relief opening 82.Form about other, due to same with the motor 36 shown in Fig. 4, eliminate the repeat specification to it.
Motor 36c can obtain the effect same with motor 36.
Figure 15 represents that oxygen concentration sensor 50 is mounted obliquely within the explanatory drawing of the major component of the state on protuberance 66.Figure 16 is the cross section explanatory drawing of the III-III line shown in Figure 15.
As shown in Figure 15 and Figure 16, its central axis of oxygen concentration sensor 50 B can be arranged by cylinder-bore axis A relatively obliquely.On the other hand, the oxygen concentration sensor 50 arranged abreast with the relative cylinder-bore axis A of central axis B represents with double dot dash line.
As long as viewed from the direction of cylinder-bore axis A the main part 118 of oxygen concentration sensor 50 and detection unit 120 overlapping with the protuberance 66 of cylinder head 46 just passable, central axis B is arbitrary relative to the angle of inclination of cylinder-bore axis A.In other words, with reference to Figure 16, as long as main part 118 and detection unit 120 are in not from the scope of stretching out between line C and line D, oxygen concentration sensor 50 can be arranged by cylinder-bore axis A relatively obliquely.Line C be connected to protuberance 66 one end on and be parallel to the straight line of cylinder-bore axis A, line D be connected to protuberance 66 the other end on and be parallel to the straight line of cylinder-bore axis A.
In addition, from cylinder-bore axis A direction, also passable between the online C of main part 118 and line D, being connected to electric wire 124 (124a) on body 118 can stretch out between line C and line D
Figure 17 (a) is the side-looking explanatory drawing of the V-type double-cylinder motor 36d representing another embodiment of the present invention, and Figure 17 (b) is the explanatory drawing of the motor 36d arrived seen from above.
In motor 36d, oxygen concentration sensor 50 is arranged in the cylinder head 46 of each cylinder respectively.In addition, only in the cylinder head 46 of single cylinder, install oxygen concentration sensor 50, controlling motor 36d, is also feasible.
Like this, the present invention is not only applicable to single-cylinder engine, similarly, is also applicable to the V-type double-cylinder motor at left and right directions multiple cylinder arranged side by side.
Figure 18 is the left side view of the two-wheeled 10a representing a further embodiment form of the present invention.
Two-wheeled 10a is that the so-called bending beam type be located at below body framework 152 by motor 36e is two-wheeled.
With reference to Figure 18, two-wheeled 10a comprises body framework 152.Body framework 152 is made up of head tube 154, main car frame 156, Carrier for cycle 158.Head tube 154 is arranged on the center, vehicle-width direction of body framework 152 front end.Main car frame 156 is from head tube 154 tiltedly below extension through vehicle-width direction center back side.Carrier for cycle 158 in the past pipe 156 rearward extends oblique upper.
Front fork 160 can be supported by head tube 154 to left and right turn, rotatably supported front-wheel 162 in the underpart of front fork 160.Bogie car is installed 164 in the upper end portion of front fork 160.
Bent axle 166 is supported on main car frame 156 towards ground, vehicle-width direction suspension by the motor 36e of air-cooling type single cylinder.Motor 36e is relative, and body framework 152 can not swingingly be fixed.Can postbrachium 168 be support with swinging up and down in the rearward end of motor 36e, the rearward end of postbrachium 168 supports there is trailing wheel 170.Vehicle seat 172 is provided with above Carrier for cycle 158.The left and right side side of body framework 152, motor 36e is covered by body cover 174.
Motor 36e comprises: hold the crankcase 176 of bent axle 166 and speed changer (not shown), cylinder block 44, cylinder head 46 and valve mechanism cover 48.Cylinder block 44, cylinder head 46 and valve mechanism cover 48 are identical with the parts be included in motor 36.
Crankcase 176, cylinder block 44, cylinder head 46 and valve mechanism cover 48 are sequentially arranged on the cylinder-bore axis A of motor 36e from the rear of vehicle fore-and-aft direction to front.Crankcase 176, cylinder block 44, cylinder head 46 and valve mechanism cover 48 are connected with adjacent parts.Oblique upper, cylinder-bore axis A relative vehicle fore-and-aft direction front tilts, and in this form of implementation, some tilts a little.Two-wheeled 10a is with chain drive trailing wheel 170.
At the upper surface of cylinder head 46, be connected with air inlet system 178 in the mode being communicated with inlet air pathway 74.In addition, due to same with the motor 36 shown in Fig. 4, on the protuberance 66 of cylinder head 46, venting gas appliance 56 is connected with in the mode being communicated with exhaust passageway 80.
There is the two-wheeled 10a of motor 36e, can obtain and two-wheeled 10 same effects.
In addition, the oxygen concentration sensor that the relative cylinder-bore axis A shown in the valve mechanism cover with sensor wrap shown in the motor as motor 36a ~ 36d, Figure 11 and Figure 12, Figure 15 and Figure 16 tilts all can be used for two-wheeled 10a.
In above-mentioned form of implementation, there is no particular limitation for the angle that cylinder-bore axis A and vehicle fore-and-aft direction are formed.Even if this angle is zero, be also feasible.That is, cylinder-bore axis A can be consistent with vehicle fore-and-aft direction.In addition, even if the present invention is for the motor arranging cylinder-bore axis A along vertical or roughly vertical direction, be also applicable.Motor of the present invention can be water-cooled engine.
The mode that oxygen concentration sensor 50 can also be positioned at detection unit 120 rear with main part 118 is arranged on protuberance 66.In this case, the front of main part 118 and rear cover respectively by cylinder head 46 and valve mechanism cover 42.The motor installing oxygen concentration sensor 50 is by this way carried two-wheeled on when, can suitably protect oxygen concentration sensor 50 from the impact from road surface slungshot etc.In addition, the diameter being included in the detection unit 118 in oxygen concentration sensor 50 can be formed roughly definitely.The diameter of detection unit 120 can be different according to the difference of axial position.Oxygen concentration sensor 50a is same in this respect.
For oxygen concentration sensor of the present invention can be without heater-type or band heater-type any one.Even if when using the oxygen concentration sensor of band hot type, the power consumption of oxygen concentration sensor also can be suppressed.
The recess along oxygen concentration sensor formation on cylinder head outer circumferential face is not limited to curved shape.Such as, recess can also be the structure outer circumferential face corner part of cylinder head being become V shape along cylinder-bore axis direction otch.
The position being formed in the exhaust passageway in cylinder head suitably can be designed according to the riding vehicle carrying motor.
Protuberance is preferably given prominence at least downwards from head body.Such as, protuberance also can from cylinder-bore axis direction, from head body to the right tiltedly any direction of below, below or left tiltedly below give prominence to.
In above-mentioned form of implementation, although the description of two-wheeled situation motor of the present invention being used for the low bending beam type (horizontal air cylinder type) shown in the scooter type shown in Fig. 1 or Figure 18., the present invention is not limited to this.According to motor of the present invention, can be used for such as motor cycle type etc., be not the two-wheeled of horizontal air cylinder type.In addition, according to motor of the present invention, can be used for other any riding vehicles of snow mobile, all-terrain vehicle (ALL-TERRAIN VEHICLE) etc.
If motor of the present invention is used for riding vehicle, even if the high position of the effluent air temp in cylinder head arranges oxygen concentration sensor, also can suppress the size of motor, suppress riding vehicle to become large.
Above, although the description of the best form of implementation of the present invention, but, self-evident, only otherwise depart from the scope of the present invention and spirit, various change can be made.Scope of the present invention is only limited by additional claim.
Claims (16)
1. a motor, it is single-cylinder engine or V-type double-cylinder motor, it is characterized in that:
Comprise:
The cylinder head of the protuberance that there is head body and give prominence to outward from described head body;
Be arranged at the valve mechanism cover in the front of described cylinder head;
Be formed in the burning recess on described head body;
For Exhaust Gas being discharged from described burning recess, with the exhaust passageway formed from the mode of the through described protuberance of described burning recess; With
For detecting the oxygen concentration of described Exhaust Gas, there is main part and the oxygen concentration sensor being arranged on the detection unit on described main part,
Described protuberance is arranged to the foreign side of the periphery extending to described valve mechanism cover viewed from the direction of cylinder-bore axis,
And described protuberance has the opening portion forming described exhaust passageway downstream, the center of described opening portion, from described cylinder-bore axis direction, is not in the position of the left and right directions foreign side of described head body,
Described oxygen concentration sensor does not stretch out from the profile of described protuberance to make described main part and described detection unit and makes the mode being positioned at described exhaust passageway at least partially of described detection unit viewed from the direction of described cylinder-bore axis, be arranged on described protuberance
And described oxygen concentration sensor is configured to, from described cylinder-bore axis direction, not give prominence in the lateral direction from described head body.
2. motor as claimed in claim 1, it is characterized in that, described oxygen concentration sensor is arranged on described protuberance in the mode of described main body section in the position in described detection unit front.
3. motor as claimed in claim 1, is characterized in that the mode that described oxygen concentration sensor is parallel to each other to make the center line of described oxygen concentration sensor and described cylinder-bore axis is arranged on described protuberance.
4. motor as claimed in claim 1, it is characterized in that, described protuberance is given prominence at least downwards from described head body.
5. motor as claimed in claim 4, it is characterized in that, described protuberance, from described cylinder-bore axis direction, is oliquely downward given prominence to from described head body.
6. motor as claimed in claim 1, is characterized in that, the outer circumferential face of described head body has the recess that side is recessed in described head body viewed from described cylinder-bore axis direction,
Described protuberance be formed in that the outer circumferential face of described head body has from the recess that viewed from described cylinder-bore axis direction, side is recessed in described head body.
7. motor as claimed in claim 6, is characterized in that, what the outer circumferential face of described head body had is recessed into upward from the recess that viewed from described cylinder-bore axis direction, side is recessed in described head body.
8. motor as claimed in claim 6, is characterized in that, it is recessed from the recess that viewed from described cylinder-bore axis direction, side is recessed in described head body to side that the outer circumferential face of described head body has.
9. motor as claimed in claim 6, is characterized in that, what the outer circumferential face of described head body had is formed from the recess that viewed from described cylinder-bore axis direction, side is recessed in described head body to make the recessed mode in the bight of described head body.
10. motor as claimed in claim 1, is characterized in that, also comprise: be arranged on the front of described cylinder head valve mechanism cover and at least front that covers described main part, the sensor wrap portion be arranged in described valve mechanism cover.
11. motors as claimed in claim 1, is characterized in that, also comprise the valve mechanism cover in the front being arranged on described cylinder head,
Described cylinder head has the cover attachment face installing described valve mechanism cover,
Described protuberance has the sensor attachment face installing described oxygen concentration sensor,
Described cover attachment face and described sensor attachment face are formed in parallel to each other.
12. motors as claimed in claim 1, is characterized in that, also comprise the valve mechanism cover in the front being arranged on described cylinder head,
Described cylinder head has the cover attachment face installing described valve mechanism cover,
Described protuberance has the sensor attachment face installing described oxygen concentration sensor,
Described cover attachment face and described sensor attachment face in the same plane.
13. motors as claimed in claim 1, is characterized in that, also comprise: be arranged on the valve mechanism cover in the front of described cylinder head and be connected to the electric wire configured on described main part and along described valve mechanism cover.
14. motors as claimed in claim 13, is characterized in that, also comprise the holding part be arranged in described valve mechanism cover for keeping described electric wire.
15. 1 kinds of riding vehicles, is characterized in that, possess the motor described in any one of claim 1 to 14.
16. riding vehicles as claimed in claim 15, is characterized in that, described cylinder-bore axis forwards oblique upper tilts.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009192352 | 2009-08-21 | ||
| JP2009-192352 | 2009-08-21 | ||
| JP2010173163A JP2011064193A (en) | 2009-08-21 | 2010-07-30 | Engine and saddle type vehicle equipped therewith |
| JP2010-173163 | 2010-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102022217A CN102022217A (en) | 2011-04-20 |
| CN102022217B true CN102022217B (en) | 2015-09-30 |
Family
ID=43296912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010529832.4A Active CN102022217B (en) | 2009-08-21 | 2010-08-20 | Motor and there is the riding vehicle of this motor |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2295762B1 (en) |
| JP (1) | JP2011064193A (en) |
| CN (1) | CN102022217B (en) |
| BR (1) | BRPI1003105B1 (en) |
| ES (1) | ES2654604T3 (en) |
| MY (1) | MY165720A (en) |
| TW (1) | TWI444535B (en) |
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|---|---|---|---|---|
| JP2013113279A (en) * | 2011-11-30 | 2013-06-10 | Yamaha Motor Co Ltd | Straddle type vehicle |
| JP5847597B2 (en) * | 2012-01-18 | 2016-01-27 | 本田技研工業株式会社 | Oil temperature sensor mounting structure for internal combustion engines |
| CN103437871B (en) * | 2013-08-20 | 2016-12-28 | 江门市大长江集团有限公司 | Oxygen sensor installation structure |
| CN103437874A (en) * | 2013-08-22 | 2013-12-11 | 江门市大长江集团有限公司 | Oxygen sensor installation structure assembly of motorcycle engine |
| JP5864063B2 (en) * | 2013-11-11 | 2016-02-17 | 本田技研工業株式会社 | Motorcycle exhaust gas sensor mounting structure |
| JP6057966B2 (en) * | 2014-09-30 | 2017-01-11 | 本田技研工業株式会社 | Exhaust gas sensor arrangement structure of internal combustion engine |
| JP2018159368A (en) * | 2017-03-24 | 2018-10-11 | 日野自動車株式会社 | Exhaust emission control device |
| US10677137B2 (en) * | 2017-11-21 | 2020-06-09 | Southern Taiwan University Of Science And Technology | Motor engine having an oxygen sensor |
| BR112020020720A2 (en) * | 2018-04-12 | 2021-01-19 | Tvs Motor Company Limited | AN ENGINE SET |
| WO2020035921A1 (en) * | 2018-08-15 | 2020-02-20 | 本田技研工業株式会社 | Two-wheeled motorcycle o2 sensor arrangement structure |
| CN112302824A (en) * | 2019-08-02 | 2021-02-02 | 南台学校财团法人南台科技大学 | Engine for motorcycle with oxygen concentration sensor |
| JP7016596B2 (en) * | 2020-03-17 | 2022-02-07 | ダイハツ工業株式会社 | Support bracket |
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|---|---|---|---|---|
| US4831820A (en) * | 1987-12-11 | 1989-05-23 | Outboard Marine Corporation | Engine with exhaust gas sensing |
| US4903648A (en) * | 1989-04-14 | 1990-02-27 | Outboard Marine Corporation | Engine with improved exhaust gas sensing |
| CN1536213A (en) * | 2003-04-10 | 2004-10-13 | ���＼�й�ҵ��ʽ���� | Exhaust sensor mounting structure for cylinder head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08177471A (en) * | 1994-12-28 | 1996-07-09 | Yamaha Motor Co Ltd | Two-cycle engine |
| JPH11200913A (en) * | 1998-01-13 | 1999-07-27 | Honda Motor Co Ltd | Arrangement structure for exhaust gas sensor of internal combustion engine |
| JP2002070551A (en) * | 2000-08-25 | 2002-03-08 | Honda Motor Co Ltd | Cylinder head for multicylinder engine |
| JP4368298B2 (en) | 2004-12-27 | 2009-11-18 | 本田技研工業株式会社 | engine |
| JP4909136B2 (en) * | 2007-03-15 | 2012-04-04 | 本田技研工業株式会社 | 4-cycle engine exhaust gas sensor mounting structure |
-
2010
- 2010-07-30 JP JP2010173163A patent/JP2011064193A/en active Pending
- 2010-08-11 TW TW099126808A patent/TWI444535B/en active
- 2010-08-16 BR BRPI1003105-7A patent/BRPI1003105B1/en not_active IP Right Cessation
- 2010-08-16 MY MYPI2010003837A patent/MY165720A/en unknown
- 2010-08-20 EP EP10173564.5A patent/EP2295762B1/en active Active
- 2010-08-20 CN CN201010529832.4A patent/CN102022217B/en active Active
- 2010-08-20 ES ES10173564.5T patent/ES2654604T3/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4831820A (en) * | 1987-12-11 | 1989-05-23 | Outboard Marine Corporation | Engine with exhaust gas sensing |
| US4903648A (en) * | 1989-04-14 | 1990-02-27 | Outboard Marine Corporation | Engine with improved exhaust gas sensing |
| CN1536213A (en) * | 2003-04-10 | 2004-10-13 | ���＼�й�ҵ��ʽ���� | Exhaust sensor mounting structure for cylinder head |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI1003105B1 (en) | 2020-06-23 |
| MY165720A (en) | 2018-04-20 |
| TW201111618A (en) | 2011-04-01 |
| CN102022217A (en) | 2011-04-20 |
| EP2295762A1 (en) | 2011-03-16 |
| TWI444535B (en) | 2014-07-11 |
| BRPI1003105A2 (en) | 2012-04-24 |
| JP2011064193A (en) | 2011-03-31 |
| ES2654604T3 (en) | 2018-02-14 |
| EP2295762B1 (en) | 2017-10-04 |
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