WO2016152899A1 - Motorcycle - Google Patents
Motorcycle Download PDFInfo
- Publication number
- WO2016152899A1 WO2016152899A1 PCT/JP2016/059134 JP2016059134W WO2016152899A1 WO 2016152899 A1 WO2016152899 A1 WO 2016152899A1 JP 2016059134 W JP2016059134 W JP 2016059134W WO 2016152899 A1 WO2016152899 A1 WO 2016152899A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- gas sensor
- silencer
- exhaust pipe
- exhaust
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
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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
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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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
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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
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Definitions
- the present invention relates to an improvement of a motorcycle equipped with an exhaust gas sensor.
- an exhaust system (6) for an engine (the numbers in parentheses indicate the symbols described in Patent Document 1. The same applies hereinafter), an exhaust pipe (7) extending from the exhaust port of the engine. And a silencer (8) connected to the downstream end (7a) of the exhaust pipe (7). The downstream end (7a) is accommodated in the silencer (8).
- a three-way catalyst (10) (hereinafter referred to as “catalyst”) is disposed in the exhaust pipe (7), and an O 2 sensor (14) (hereinafter referred to as “exhaust gas sensor”) is disposed downstream of the catalyst (10). (14) "is arranged.
- the silencer (8) has an expansion chamber having a predetermined capacity. If the exhaust gas sensor (14) is provided in such a silencer (8), the exhaust gas sensor (14) is provided so as to project outward from the silencer (8), and the vehicle tends to be enlarged. is there. In a motorcycle equipped with an exhaust gas sensor in the vicinity of a silencer, a technique that can suppress an increase in the size of the vehicle is desired.
- An object of the present invention is to provide a technology capable of suppressing an increase in the size of a vehicle in a motorcycle including an exhaust gas sensor in the vicinity of the silencer.
- a swing arm that rotatably supports a rear wheel, an engine, an exhaust pipe connected to an exhaust port of the engine, an outer side of the swing arm, and a rear of the exhaust pipe
- a motorcycle comprising a silencer connected to an end, a catalyst provided in an exhaust pipe, and an exhaust gas sensor capable of detecting an exhaust gas component in the exhaust pipe, wherein the catalyst is in the vicinity of a joint between the silencer and the exhaust pipe
- the silencer includes a diameter-expanded portion that is gradually expanded from the joint portion, and the exhaust gas sensor is attached to the diameter-expanded portion and is provided between the exhaust pipe and the swing arm.
- the invention according to claim 2 is characterized in that a recessed portion that is recessed toward the exhaust pipe is provided in the enlarged diameter portion, and an exhaust gas sensor is attached to the recessed portion.
- the invention according to claim 3 is characterized in that the center of the exhaust pipe is provided at a position corresponding to the concave portion, and at a position near the concave portion from the center of the enlarged diameter portion.
- the invention according to claim 4 is characterized in that the exhaust gas sensor is disposed at a position overlapping the crankcase of the engine when viewed from the front of the vehicle.
- the invention according to claim 5 is characterized in that the motorcycle further includes a passenger step on which the passenger puts his / her foot, and an exhaust gas sensor is disposed inside the passenger step.
- the silencer is supported by the passenger step, and the wiring extends from the exhaust gas sensor, and this wiring is routed in the vehicle body cover along the inside of the passenger step. It is characterized by.
- the exhaust gas sensor is attached to the enlarged diameter portion provided in the silencer. If the exhaust gas sensor can be mounted using the space of the enlarged diameter portion, the exhaust gas sensor can be disposed so as not to protrude greatly outward in the radial direction compared to the case where the exhaust gas sensor is mounted on the silencer. Therefore, in a motorcycle in which a catalyst is provided immediately before the silencer (in the vicinity of the connecting portion) and an exhaust gas sensor is provided behind the catalyst, the increase in size of the vehicle can be suppressed. Further, since the exhaust gas sensor is disposed so as to be sandwiched between the exhaust pipe and the swing arm, the appearance of the vehicle is hardly impaired.
- the recessed portion is provided in the enlarged diameter portion, and the exhaust gas sensor is attached to the recessed portion. Since the exhaust gas sensor is accommodated in the recess, the amount of overhang of the exhaust gas sensor can be suppressed as compared with the case where the recess is not formed. Further, since the amount of overhang of the exhaust gas sensor is reduced, it can be protected from flying stones and the like without being affected by the outside.
- the center of the exhaust pipe is provided at a position near the recess from the center of the enlarged diameter portion. Since the exhaust pipe is routed to the recess, the amount of recess recess can be reduced. If it becomes a recessed part with a small amount of dents, processing cost can be suppressed.
- the exhaust gas sensor is disposed at a position overlapping the crankcase of the engine when viewed from the front of the vehicle. While traveling, stepping stones scattered from the front hit the crankcase, and it is difficult to hit the exhaust gas sensor arranged behind the crankcase. As a result, the exhaust gas sensor can be protected from flying stones from the front.
- the exhaust gas sensor is arranged inside the passenger step. Since the exhaust gas sensor is disposed inside the passenger step, the exhaust gas sensor is unlikely to get in the way when placing a foot on the passenger step.
- the silencer is supported by the passenger step, and the wiring extends from the exhaust gas sensor.
- the wiring is routed in the vehicle body cover along the inside of the passenger step. Therefore, the arrangement can be made without considering the influence of swinging of the swing arm. That is, once wiring is arranged along the swing arm, it is necessary to take measures to arrange the wiring with bending between the silencer and the swing arm.
- the wiring is arranged in the body cover along the inside of the passenger step by arranging the wiring along the step supporting the silencer, so that the wiring is considered to swing. There is no need to take any measures to provide deflection.
- FIG. 1 is a right side view of a motorcycle according to the present invention.
- 1 is a front view of a motorcycle according to the present invention. It is a top view of a silencer provided with an exhaust gas sensor and its peripheral part.
- FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 1, illustrating an arrangement structure of exhaust gas sensors and the like. It is a right view of the silencer which fractured
- FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 1 and illustrates a layout between an exhaust gas sensor and a swing arm.
- FIG. 8 is a sectional view taken along line 8-8 in FIG.
- a motorcycle 10 includes a body frame 11, an engine 12 suspended on the body frame 11, a front wheel 13 provided on the body frame 11 so as to be steerable, and a pivot portion 15 of the body frame 11.
- a swing arm 16 that is swingably supported by the vehicle, a rear wheel 14 that is provided at the rear end of the swing arm 16 and is rotatably supported, and a front wheel 13 and a rear wheel 14 that are provided on the body frame 11.
- This is a saddle-ride type vehicle having a seat 17 on which an occupant sits and on which the occupant rides.
- the vehicle body frame 11 includes a head pipe 21 that rotatably supports a front wheel 13, a main frame 22 that extends in a substantially arc shape that protrudes upward and obliquely downward from the head pipe 21, and a lower portion of the main frame 22.
- the down frame 23 that extends obliquely rearward and downward from the head pipe 21, the pivot portion 15 provided at the lower end of the main frame 22, and seat rails 24 ⁇ / b> L and 24 ⁇ / b> R that extend rearward from the middle portion of the main frame 22
- the support frames 25L and 25R (only the reference numeral 25R on the front side in the figure) passed between the seat rails 24L and 24R and the pivot portion 15 are main elements.
- a steering shaft 31 is rotatably provided on the head pipe 21, a steering handle 32 is attached to the upper end of the steering shaft 31, and a front fork 33 that supports the front wheel 13 extends from the lower end of the steering shaft 31. Between the swing arm 16 and the seat rails 24L, 24R, cushion units 34L, 34R (only the reference numeral 34R on the front side in the figure is shown) are passed.
- a front fender 35 is attached to the front fork 33, and a rear fender 36 is attached to the seat rails 24L and 24R.
- a fuel tank 37 is disposed behind the steering handle 32, and the seat 17 is disposed so as to be continuous behind the fuel tank 37.
- the fuel tank 37 is supported by the main frame 22, and the seat 17 is supported by seat rails 24L and 24R.
- a driver step 38 that allows the driver to place his / her foot from the engine 12 extends laterally in the vehicle width direction, and the passenger steps 39L and 39R where the passenger can place his / her foot from the support frames 25L and 25R. (Only the reference numeral 39R on the front side of the figure is shown) extends laterally in the vehicle width direction.
- An exhaust device 40 extends from the engine 12 and is connected to an exhaust pipe 41, a catalyst 42 interposed in the middle of the exhaust pipe 41, and a downstream end (rear end) of the exhaust pipe 41.
- the silencer 43 is a main element. The silencer 43 is connected to the rear end of the exhaust pipe 41 and is disposed outside the swing arm 16.
- the upstream end of the exhaust pipe 41 is connected to the exhaust port 66 of the engine 12, the rear part of the exhaust pipe 41 is attached to the pivot part 15 via the first stay 45, and the silencer 43 is connected to the second stay 46. And is attached to and supported by the passenger step 39R.
- the engine 12 is attached to the lower end of the down frame 23 via the front engine hanger 47 and attached to the pivot portion 15 via the rear engine hanger 48.
- a brake pedal 49 is rotatably provided on the pivot portion 15.
- the engine 12 includes a crankcase 51, a cylinder block 52 mounted and mounted on the upper surface of the crankcase 51, a cylinder head 53 mounted and mounted on the upper surface of the cylinder block 52, and an upper surface of the cylinder head 53.
- An oil pan 55 is attached to the lower surface of the crankcase 51 from below to above.
- a clutch cover 56 is attached to the right side of the crankcase 51 on the front side of the figure.
- the intake device 60 is connected to the rear surface 53b of the cylinder head 53.
- An exhaust port 66 is provided on the front surface 53 a of the cylinder head 53, and the exhaust device 40 is connected to the exhaust port 66.
- the vehicle body cover 70 includes a front cowl 71 that covers the front of the head pipe 21, tank cowls 72L and 72R that cover the front side of the fuel tank 37 behind the front cowl 71 (only the front 72R is shown).
- Midside covers 73L and 73R (only the front side 73R is shown) covering the rear portion of the main frame 22 and the pivot portion 15 behind the tank cowls 72L and 72R, and the midside cover 73 are provided to be continuous.
- Rear side covers 74L and 74R (only the front side 74R is shown).
- a license stay 75 is provided at the lower part of the front cowl 71 so as to project forward and to which a license plate is attached.
- the crankcase 51 of the engine 12 is provided so as to protrude outward in the vehicle width direction in the vehicle front view.
- An exhaust pipe 41 is provided in front of the crankcase 51.
- the exhaust pipe 41 extends below the crankcase 51.
- the exhaust pipe 41 extending below the crankcase 51 extends rearward of the vehicle, and its downstream side is connected to a silencer 43.
- the left and right passenger steps 39L and 39R on which the passenger puts his / her feet extend from the support frames 25L and 25R (see FIG. 1) to the outside in the vehicle width direction, and then on the lower side of the figure Pipe-shaped first arms 81L, 81R and second arms 82L, 82R, and step-side stays 83L provided at the lower ends of these first arms 81L, 81R and second arms 82L, 82R, 83R, and foot rests 84L and 84R projecting outward from the step side stays 83L and 83R in the vehicle width direction.
- a boss portion 85 is attached to the right step side stay 83R that is a component of the right passenger step 39R.
- the second stay 46 on the silencer side is fastened to the boss portion 85 via a fastening member 86. That is, the silencer 43 is supported by the right passenger step 39R.
- a silencer 43 is disposed below the right passenger step 39 ⁇ / b> R, and a silencer cover 77 is attached to the outer surface of the silencer 43.
- a second stay 46 is provided on the inner surface of the silencer 43, an exhaust gas sensor 67 is disposed in front of the second stay 46 in the vehicle, and a wiring 68 extends from the exhaust gas sensor 67.
- the exhaust gas sensor 67 is arranged inside the passenger step 39R.
- the wiring 68 extending from the exhaust gas sensor 67 is routed along the passenger step 39R and then routed along the passenger step 39R.
- the silencer 43 includes a case portion 91, a separator portion 92 that defines the inside of the case portion 91, and a rear end portion of the exhaust pipe 41 that is arranged inside the case portion 91. And a pipe member 93 connected to each other. An exhaust pipe 41 is connected to the upstream end of the pipe member 93.
- the case portion 91 includes a joint portion 94 joined to the exhaust pipe 41, a diameter-increased portion 95 whose diameter is gradually increased from the joint portion 94, and a rear end portion of the diameter-expanded portion 95. And a cap portion 97 that closes the downstream end of the cylindrical portion 96.
- the separator unit 92 includes a first separator 101 and a second separator 102 provided behind the first separator 101 in the vehicle.
- the first separator 101 and the second separator 102 are arranged in a direction perpendicular to the longitudinal direction of the case portion 91.
- the first separator 101 is disposed in the vicinity of the boundary between the enlarged diameter portion 95 and the cylindrical portion 96, and the second separator 102 is disposed at the rear portion of the cylindrical portion 96.
- the case portion 91 is partitioned into a first chamber 104, a second chamber 105, and a third chamber 106 in this order from the front to the back.
- the pipe member 93 of the silencer 43 is supported by the first pipe member 107 supported by the first separator 101 and the second separator 102 and extending to the third chamber 106, and the second separator 102 and the cap part 97. It consists of two pipe members 108.
- the first pipe member 107 is provided with a first diffuser portion 114 having a large number of first holes 111 and flowing exhaust gas outside the first pipe member 107.
- the rear end 107 b of the first pipe member 107 is closed by a small cap 117 at a position facing the chamber 106, and the third diffuser portion 116 is positioned at a position facing the third chamber 106 at a position in front of the small cap 117. Is provided.
- a second diffuser portion 115 having a large number of second holes 112 and flowing exhaust gas out of the second tube member 108 is provided in the second tube member 108.
- the exhaust gas that has entered the first pipe member 107 flows from the first hole 111 to the second chamber 105, passes through the third hole 113 provided in the third diffuser portion 116, flows to the third chamber 106, and is
- the exhaust gas that has flowed into the chamber 106 enters the second pipe member 108 through the second hole 112 and is discharged to the outside from the rear end of the second pipe member 108.
- the exhaust gas flowing into the second chamber 105 enters from the front end of the second pipe member 108 and is discharged outside from the rear end of the second pipe member 108.
- the exhaust pipe 41 passes through the inside of the first chamber 104, passes through the first separator 101, and is connected to the upstream end of the pipe member 93 constituting the silencer 43. That is, the exhaust pipe 41 extends to the inside of the silencer 43.
- a catalyst 42 is provided in the exhaust pipe 41.
- the catalyst 42 is provided in the vicinity of the joint portion 94 between the silencer 43 and the exhaust pipe 41.
- An exhaust gas sensor 67 capable of detecting an exhaust gas component in the exhaust pipe is provided in the exhaust pipe 41 on the downstream side of the catalyst 42.
- the exhaust gas sensor 67 is attached to the enlarged diameter portion 95 of the silencer 43.
- a recessed portion 121 that is recessed toward the exhaust pipe 41 is provided in the enlarged diameter portion 95, and the exhaust gas sensor 67 is attached to the recessed portion 121.
- the exhaust pipe 41 is provided at a position corresponding to the recess 121 and close to the recess 121.
- the exhaust gas sensor 67 is attached to the enlarged diameter portion 95 and is provided between the exhaust pipe 41 and the swing arm 16.
- a recessed portion 121 that is recessed toward the exhaust pipe 41 is provided in the enlarged diameter portion 95, and the exhaust gas sensor 67 is attached to the recessed portion 121.
- the exhaust pipe 41 is provided at a position corresponding to the recess 121 at a position close to the recess 121.
- the exhaust gas sensor 67 is disposed at a position overlapping the crankcase 51 of the engine 12 when viewed from the front of the vehicle. That is, the exhaust gas sensor 67 is disposed behind the crankcase 51 so as to overlap the crankcase 51.
- the exhaust gas sensor 67 Since the exhaust gas sensor 67 is disposed at a position overlapping the crankcase 51 of the engine 12, a stepping stone or the like scattered from the front hits the crankcase 51 during traveling, and the exhaust gas sensor 67 disposed behind the crankcase 51 Hard to hit. As a result, the exhaust gas sensor 67 can be protected from flying stones from the front.
- a recess that is a component of the right passenger step 39R and that is recessed inward in the vehicle width direction in the first arm 81R of the first arm 81R and the second arm 82R that have a pipe shape.
- a portion 122 is formed.
- a wiring 68 extending from the exhaust gas sensor 67 was placed along the recess 122.
- the recess 122 is covered with a cover member 78 that is a component of the vehicle body cover 70 from the inside in the vehicle width direction. That is, the wiring 68 is routed in the cover member 78 which is a component of the vehicle body cover 70 along the passenger step 39R.
- the wiring is covered with a cover member.
- a rear side cover or a rear fender may be extended to cover the passenger step from the inside.
- the exhaust gas sensor 67 is attached to the enlarged diameter portion 95 provided in the silencer 43. If the exhaust gas sensor 67 can be attached using the space of the enlarged diameter portion 95, the exhaust gas sensor 67 can be arranged so as not to protrude greatly to the outside of the silencer 43. Therefore, in the motorcycle 10 in which the silencer 43 is provided with the exhaust gas sensor 67, an increase in the size of the vehicle can be suppressed. Further, since the exhaust gas sensor 67 is disposed so as to be sandwiched between the exhaust pipe 41 and the swing arm 16, there is no fear that the appearance of the vehicle is impaired.
- a recess 121 is provided in the enlarged diameter portion 95, and the exhaust gas sensor 67 is attached to the recess 121. Since the exhaust gas sensor 67 is housed in the recess 121, the amount of overhang of the exhaust gas sensor 67 can be suppressed as compared with the case where the recess 121 is not formed. In addition, since the amount of overhang of the exhaust gas sensor 67 is reduced, it is possible to make it less susceptible to external influences.
- the exhaust pipe 41 is provided at a position close to the recess 121. Since the exhaust pipe 41 is arranged close to the recess 121, the amount of depression of the recess 121 can be reduced. If it becomes the recessed part 121 with a small amount of hollows, a processing man-hour can be suppressed.
- the exhaust gas sensor 67 is arranged inside the passenger step 39R. Since the exhaust gas sensor 67 is disposed inside the passenger step 39R, the exhaust gas sensor 67 is unlikely to get in the way when the foot is placed on the passenger step 39R.
- the wiring 68 extending from the exhaust gas sensor 67 is routed in the vehicle body cover 70 along the inside of the passenger step 39R where the silencer 43 is supported. If the wiring extending from the exhaust gas sensor is to be routed along the silencer, the silencer will rise in temperature, and the routing is difficult. It is necessary to take measures against heat insulation separately. Further, once the wiring is arranged along the swing arm, it is necessary to take measures to arrange the wiring with bending between the silencer and the swing arm.
- the wiring 68 is routed in the vehicle body cover 70 along the inside of the passenger step 39R, it is not necessary to take measures to route the wiring 68 with bending.
- the passenger step 39R where the passenger puts his / her foot also has a function of supporting the silencer 43, and the wiring 68 of the exhaust gas sensor 67 extending from the silencer 43 is arranged inside the passenger step 39R. . Since the passenger step 39R does not swing, the length of the wiring 68 can be shortened. Further, since the wiring 68 is routed inside the passenger step 39R, the wiring 68 is not visible from the outside, and there is no fear that the appearance of the vehicle is impaired.
- the exhaust gas sensor of this embodiment uses an oxygen sensor (O 2 sensor) that measures the oxygen concentration in the exhaust gas.
- O 2 sensor is suitable because it is inexpensive, but is not limited to the O 2 sensor, and any type of sensor may be used as long as it can detect components in the exhaust gas. For example, there are a CO sensor and a NO x sensor.
- the present invention is applied to a motorcycle in the embodiment, it can also be applied to a tricycle and can be applied to a general vehicle.
- the present invention is suitable for a motorcycle in which an exhaust gas sensor is provided in an exhaust pipe.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Transportation (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
消音器の近傍に排気ガスセンサを備えた自動二輪車において、車両の大型化を抑えることができる技術が望まれる。 By the way, the silencer (8) has an expansion chamber having a predetermined capacity. If the exhaust gas sensor (14) is provided in such a silencer (8), the exhaust gas sensor (14) is provided so as to project outward from the silencer (8), and the vehicle tends to be enlarged. is there.
In a motorcycle equipped with an exhaust gas sensor in the vicinity of a silencer, a technique that can suppress an increase in the size of the vehicle is desired.
しかし、本発明は、消音器を支持するステップに配線を沿わせることで、配線は、同乗者ステップの内側に沿って、車体カバー内に配策されているので、配線に揺動を考慮した撓みをもたせて配策する対策は不要である。 In the invention according to claim 6, the silencer is supported by the passenger step, and the wiring extends from the exhaust gas sensor. The wiring is routed in the vehicle body cover along the inside of the passenger step. Therefore, the arrangement can be made without considering the influence of swinging of the swing arm. That is, once wiring is arranged along the swing arm, it is necessary to take measures to arrange the wiring with bending between the silencer and the swing arm.
However, according to the present invention, the wiring is arranged in the body cover along the inside of the passenger step by arranging the wiring along the step supporting the silencer, so that the wiring is considered to swing. There is no need to take any measures to provide deflection.
図1に示すように、自動二輪車10は、車体フレーム11と、この車体フレーム11に懸架されるエンジン12と、車体フレーム11に操向自在に設けられる前輪13と、車体フレーム11のピボット部15に揺動自在に支持されるスイングアーム16と、このスイングアーム16の後端に設けられ回転可能に支持される後輪14と、前輪13と後輪14の間にて車体フレーム11に設けられ乗員が座るシート17とを有し、このシート17に乗員が跨って乗車する鞍乗り型車両である。 Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a
車体カバー70は、ヘッドパイプ21の前方を覆うフロントカウル71と、フロントカウル71の後方で燃料タンク37の前部側方を覆うタンクカウル72L、72R(図手前側の72Rのみ示す。)と、このタンクカウル72L、72Rの後方でメインフレーム22の後部及びピボット部15を覆うミッドサイドカバー73L、73R(図手前側の73Rのみ示す。)と、このミッドサイドカバー73に連続するように設けられるリヤサイドカバー74L、74R(図手前側の74Rのみ示す。)とからなる。フロントカウル71の下部に前方へ突設されライセンスプレートが装着されるライセンスステー75が設けられている。 Next, vehicle body covers will be described.
The
図3に示すように、同乗者が足を置く左右の同乗者ステップ39L、39Rは、各々、サポートフレーム25L、25R(図1参照)から車幅方向外方に延びた後、図裏側の下方へ向け延びておりパイプ状の第1アーム81L、81R及び第2アーム82L、82Rと、これらの第1アーム81L、81R及び第2アーム82L、82Rの下端に、各々設けられるステップ側ステー83L、83Rと、当該ステップ側ステー83L、83Rから車幅方向外方へ突設される足置部84L、84Rとからなる。 Next, the structure of the passenger step (passenger step) will be described.
As shown in FIG. 3, the left and right passenger steps 39L and 39R on which the passenger puts his / her feet extend from the support frames 25L and 25R (see FIG. 1) to the outside in the vehicle width direction, and then on the lower side of the figure Pipe-shaped
図4に示すように、右の同乗者ステップ39Rの下方に消音器43が配置され、この消音器43の外側面に、消音器カバー77が取付けられている。消音器43の内側面に、第2ステー46が設けられ、この第2ステー46の車両前方に、排気ガスセンサ67が配置され、この排気ガスセンサ67から配線68が延びている。 Hereinafter, the arrangement of the exhaust device and the exhaust gas sensor will be described in detail.
As shown in FIG. 4, a
図7に戻り、排気ガスセンサ67は、消音器43に備えられている拡径部95に取付けられる。拡径部95のスペースを利用して排気ガスセンサ67を取付けることができれば、排気ガスセンサ67を消音器43の外側に大きく張り出さないように配置できる。従って、消音器43に排気ガスセンサ67が備えられている自動二輪車10において、車両の大型化を抑えることができる。また、排気ガスセンサ67は、排気管41とスイングアーム16の間に挟まれるように配置されるので、車両の外観性が損なわれる心配もない。 Next, the operation of the motorcycle equipped with the exhaust gas sensor described above will be described.
Returning to FIG. 7, the
Claims (6)
- 後輪(14)を回転可能に支持するスイングアーム(16)と、
エンジン(12)と、
このエンジン(12)の排気ポート(66)に接続される排気管(41)と、
前記スイングアーム(16)の外側に配置されると共に、前記排気管(41)の後端に接続される消音器(43)と、
前記排気管(41)内に設けられる触媒(42)と、
前記排気管(41)内の排気ガス成分を検出できる排気ガスセンサ(67)とを備える自動二輪車であって、
前記触媒(42)は、前記消音器(43)と前記排気管(41)の接合部(94)の近傍に設けられ、
前記消音器(43)は、前記接合部(94)から徐々に拡径された拡径部(95)を備え、
前記排気ガスセンサ(67)は、前記拡径部(95)に取付けられると共に、前記排気管(41)と前記スイングアーム(16)の間に設けられることを特徴とする自動二輪車。 A swing arm (16) that rotatably supports the rear wheel (14);
An engine (12);
An exhaust pipe (41) connected to the exhaust port (66) of the engine (12);
A silencer (43) disposed outside the swing arm (16) and connected to a rear end of the exhaust pipe (41);
A catalyst (42) provided in the exhaust pipe (41);
A motorcycle comprising an exhaust gas sensor (67) capable of detecting an exhaust gas component in the exhaust pipe (41);
The catalyst (42) is provided in the vicinity of a joint (94) between the silencer (43) and the exhaust pipe (41),
The silencer (43) includes an enlarged diameter portion (95) that is gradually enlarged from the joint portion (94),
The motorcycle, wherein the exhaust gas sensor (67) is attached to the enlarged diameter portion (95) and is provided between the exhaust pipe (41) and the swing arm (16). - 前記拡径部(95)に、前記排気管(41)に向かって窪む凹部(121)が設けられ、この凹部(121)に前記排気ガスセンサ(67)が取付けられることを特徴とする請求項1記載の自動二輪車。 The recessed portion (121) recessed toward the exhaust pipe (41) is provided in the enlarged diameter portion (95), and the exhaust gas sensor (67) is attached to the recessed portion (121). The motorcycle according to 1.
- 前記凹部(121)に対応する位置で、前記排気管(41)の中心(C2)は、前記拡径部(95)の中心(C1)から前記凹部(121)に寄った位置に設けられることを特徴とする請求項2記載の自動二輪車。 At the position corresponding to the recess (121), the center (C2) of the exhaust pipe (41) is provided at a position close to the recess (121) from the center (C1) of the enlarged diameter portion (95). The motorcycle according to claim 2.
- 車両正面視で、前記排気ガスセンサ(67)は、前記エンジン(12)のクランクケース(51)と重なる位置に配置されることを特徴とする請求項1~3のいずれか1項記載の自動二輪車。 The motorcycle according to any one of claims 1 to 3, wherein the exhaust gas sensor (67) is disposed at a position overlapping the crankcase (51) of the engine (12) when viewed from the front of the vehicle. .
- 前記自動二輪車に、更に、同乗者が足を置く同乗者ステップ(39)が備えられ、
この同乗者ステップ(39)の内側に、前記排気ガスセンサ(67)が配置されることを特徴とする請求項1~4のいずれか1項記載の自動二輪車。 The motorcycle further includes a passenger step (39) for the passenger to place his / her foot.
The motorcycle according to any one of claims 1 to 4, wherein the exhaust gas sensor (67) is arranged inside the passenger step (39). - 前記消音器(43)は、前記同乗者ステップ(39)に支持されており、
前記排気ガスセンサ(67)から配線(68)が延びており、
この配線(68)は、前記同乗者ステップ(39)の内側に沿って、車体カバー(78)内に配策されていることを特徴とする請求項5記載の自動二輪車。 The silencer (43) is supported by the passenger step (39),
A wiring (68) extends from the exhaust gas sensor (67),
6. The motorcycle according to claim 5, wherein the wiring (68) is routed in a vehicle body cover (78) along the inside of the passenger step (39).
Priority Applications (4)
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BR112017020006-6A BR112017020006B1 (en) | 2015-03-26 | 2016-03-23 | MOTORCYCLE |
CN201680018133.9A CN107429617B (en) | 2015-03-26 | 2016-03-23 | Motor two-wheel vehicle |
MYPI2017703552A MY189076A (en) | 2015-03-26 | 2016-03-23 | Motorcycle |
PH12017501718A PH12017501718B1 (en) | 2015-03-26 | 2017-09-19 | Motorcycle |
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EP3348806A4 (en) * | 2015-12-18 | 2019-07-24 | Kawasaki Jukogyo Kabushiki Kaisha | Saddle-type vehicle |
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JP6702012B2 (en) * | 2016-06-20 | 2020-05-27 | スズキ株式会社 | Exhaust gas sensor layout |
JP2017227157A (en) * | 2016-06-22 | 2017-12-28 | スズキ株式会社 | Exhaust gas sensor arrangement structure |
JP6527900B2 (en) * | 2017-03-23 | 2019-06-05 | 本田技研工業株式会社 | Linear member holding structure of straddle type vehicle |
JP7059792B2 (en) * | 2017-06-23 | 2022-04-26 | スズキ株式会社 | Exhaust gas sensor layout structure and motorcycle |
JP6793098B2 (en) * | 2017-07-26 | 2020-12-02 | 本田技研工業株式会社 | Exhaust system and saddle-mounted vehicle |
WO2019043869A1 (en) * | 2017-08-31 | 2019-03-07 | 本田技研工業株式会社 | Exhaust device for saddled vehicles |
JP6951552B2 (en) * | 2018-03-29 | 2021-10-20 | 本田技研工業株式会社 | Internal combustion engine exhaust system |
WO2019224959A1 (en) * | 2018-05-23 | 2019-11-28 | 本田技研工業株式会社 | Saddled vehicle |
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 |
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BR112017020006A2 (en) | 2018-06-19 |
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JP6454578B2 (en) | 2019-01-16 |
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CN107429617B (en) | 2020-09-29 |
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MY189076A (en) | 2022-01-24 |
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