TWI572511B - Saddle-riding vehicle - Google Patents

Saddle-riding vehicle Download PDF

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TWI572511B
TWI572511B TW103142481A TW103142481A TWI572511B TW I572511 B TWI572511 B TW I572511B TW 103142481 A TW103142481 A TW 103142481A TW 103142481 A TW103142481 A TW 103142481A TW I572511 B TWI572511 B TW I572511B
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catalyst
fuel tank
disposed
straddle
vehicle
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TW103142481A
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TW201527162A (en
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豬森俊典
井上隆司
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山葉發動機股份有限公司
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Priority claimed from JP2013258321A external-priority patent/JP2015113074A/en
Priority claimed from EP14191468.9A external-priority patent/EP3015350B1/en
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Publication of TWI572511B publication Critical patent/TWI572511B/en

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Description

跨坐型車輛 Straddle type vehicle

本發明係關於一種跨坐型車輛。 The present invention relates to a straddle type vehicle.

存在如下一種機車,其係根據可增加儲物箱之容量等理由,而於平板腳踏板(flat foot board)之下方配置燃料箱(例如參照日本專利特開2007-8316號)。 There is a locomotive in which a fuel tank is disposed under a flat foot board for reasons such as an increase in the capacity of the storage box (for example, refer to Japanese Patent Laid-Open No. 2007-8316).

另一方面,於跨坐型車輛中,為了使用以處理排氣之觸媒提前活化,而有欲將觸媒向排氣管之更上游配置之強烈要求。例如,於日本專利特開2013-36422號中,揭示有一種具有較消音器配置於更上游之觸媒的機車。 On the other hand, in the straddle type vehicle, in order to use the catalyst for treating the exhaust gas to be activated in advance, there is a strong demand for the catalyst to be disposed further upstream of the exhaust pipe. For example, in Japanese Patent Laid-Open No. 2013-36422, there is disclosed a locomotive having a catalyst that is disposed more upstream than a silencer.

又,日本專利特開2007-8316號與日本專利特開2013-36422號之機車包括引擎單元,該引擎單元具有:引擎;排氣管,其連接於引擎;及消音器,其連接於排氣管。引擎單元係所謂單元擺動式之引擎單元,可搖動地支持於車體框架。引擎單元配置於座部之下方。供騎手之腳放置之平板腳踏板配置於座部之下方且前方。平板腳踏板配置於引擎單元之前方。由於引擎單元於座部之下方可搖動地支持於車體框架,故而可確保較座部配置於更前方且更下方之平板腳踏板之空間。 Further, the locomotive of Japanese Patent Laid-Open No. 2007-8316 and Japanese Patent Laid-Open No. 2013-36422 includes an engine unit having: an engine; an exhaust pipe connected to the engine; and a muffler connected to the exhaust tube. The engine unit is a so-called unit swing type engine unit that is rockably supported by the body frame. The engine unit is disposed below the seat. A flat foot pedal for the rider's foot is placed below and in front of the seat. The flat foot pedal is placed in front of the engine unit. Since the engine unit is slidably supported by the vehicle body frame below the seat portion, the space of the flat foot pedal that is disposed further forward and lower than the seat portion can be ensured.

觸媒與排氣管相比成為高溫。又,於引擎之至少一部分配置於座部之下方之跨坐型車輛中,越將觸媒向上游配置,則觸媒越接近於騎乘者之腳,而必須考慮觸媒之熱對騎乘者之腳之影響。 The catalyst is at a higher temperature than the exhaust pipe. Further, in a straddle type vehicle in which at least a part of the engine is disposed below the seat portion, the more the catalyst is disposed upstream, the closer the catalyst is to the rider's foot, and the heat of the catalyst must be taken into consideration. The influence of the feet of the person.

又,於具有平板腳踏板之跨坐型車輛中,引擎係配置於平板腳踏板之後方。因此,當將燃料箱配置於平板腳踏板之下方時,越將觸媒向上游配置,則觸媒越接近於燃料箱。因此,必須亦考慮觸媒之熱對燃料箱之影響。 Further, in a straddle type vehicle having a flat foot pedal, the engine is disposed behind the flat foot pedal. Therefore, when the fuel tank is disposed below the flat foot pedal, the more the catalyst is disposed upstream, the closer the catalyst is to the fuel tank. Therefore, the impact of the heat of the catalyst on the fuel tank must also be considered.

又,就騎手之上下車之容易度等觀點而言,平板腳踏板之置腳部較佳為遍及車寬方向較寬地形成,且配置於較低之位置。於此情形時,當將燃料箱配置於平板腳踏板之下方時,為了確保使燃料箱之容量較大,而於車寬方向上較寬地形成燃料箱。因此,於使觸媒位於上游之情形時,容易對燃料箱造成影響。 Further, from the viewpoint of easiness of getting off the rider, the leg portion of the flat foot pedal is preferably formed to be wide in the vehicle width direction, and is disposed at a lower position. In this case, when the fuel tank is disposed below the flat foot pedal, the fuel tank is formed wider in the vehicle width direction in order to ensure a larger capacity of the fuel tank. Therefore, it is easy to affect the fuel tank when the catalyst is placed upstream.

本發明之課題在於:在具有配置於平板腳踏板之下方之燃料箱之跨坐型車輛中,謀求觸媒之提前活化,並且抑制來自觸媒之熱對騎乘者之腳及燃料箱之影響。 An object of the present invention is to achieve early activation of a catalyst in a straddle type vehicle having a fuel tank disposed below a flat foot pedal, and to suppress heat from a catalyst to a rider's foot and a fuel tank. influences.

本發明之一態樣之跨坐型車輛包括車體框架、座部、平板腳踏板、燃料箱、車體外殼、開口部、及引擎單元。座部支持於車體框架。再者,座部既可直接地支持於車體框架,或者,亦可經由其他構件而間接地支持於車體框架。平板腳踏板較座部配置於更下方且更前方。燃料箱配置於平板腳踏板之下方。車體外殼配置於燃料箱之側方。開口部將行駛風導入至燃料箱與車體外殼之間。引擎單元配置於平板腳踏板及燃料箱之後方,可搖動地支持於車體框架。引擎單元之至少一部分位於座部之下方。引擎單元包含引擎、排氣管、消音器、及觸媒。引擎具有排氣埠。排氣管連接於排氣埠。消音器連接於排氣管。觸媒配置於排氣管內。排氣管包含第1排氣管、觸媒收容部、及 第2排氣管。第1排氣管位於觸媒之上游,且連接於排氣埠。觸媒收容部連接於第1排氣管,向後方延伸,且收容觸媒。第2排氣管位於觸媒之下游,連接於觸媒收容部,向後方延伸並連接於消音器。於前視車輛時,第1排氣管之至少一部分與燃料箱重疊。觸媒收容部之至少一部分配置於燃料箱與車體外殼之間之空間之後方。 A straddle type vehicle according to an aspect of the present invention includes a vehicle body frame, a seat portion, a flat foot pedal, a fuel tank, a vehicle body casing, an opening portion, and an engine unit. The seat supports the body frame. Furthermore, the seat portion can be directly supported by the vehicle body frame, or can be indirectly supported by the vehicle body frame via other members. The flat foot pedal is disposed further below and further forward than the seat. The fuel tank is disposed below the flat foot pedal. The body shell is disposed on the side of the fuel tank. The opening guides the traveling wind between the fuel tank and the vehicle body casing. The engine unit is disposed behind the flat foot pedal and the fuel tank, and is rotatably supported by the vehicle body frame. At least a portion of the engine unit is located below the seat. The engine unit contains the engine, exhaust pipe, silencer, and catalyst. The engine has an exhaust port. The exhaust pipe is connected to the exhaust port. The silencer is connected to the exhaust pipe. The catalyst is disposed in the exhaust pipe. The exhaust pipe includes a first exhaust pipe, a catalyst storage portion, and The second exhaust pipe. The first exhaust pipe is located upstream of the catalyst and is connected to the exhaust port. The catalyst storage unit is connected to the first exhaust pipe and extends rearward to accommodate the catalyst. The second exhaust pipe is located downstream of the catalyst, is connected to the catalyst containing portion, extends rearward, and is connected to the muffler. At the time of the forward looking vehicle, at least a portion of the first exhaust pipe overlaps the fuel tank. At least a part of the catalyst containing portion is disposed behind the space between the fuel tank and the vehicle body casing.

於本態樣之跨坐型車輛中,藉由將觸媒於排氣管內儘可能地置於上游,可加快引擎起動後之觸媒之溫度上升,從而可使觸媒提前活化。又,於觸媒活化之後,藉由車輛行駛,可利用通過燃料箱與車體外殼之間之行駛風冷卻觸媒。因此,藉由將觸媒於排氣管內儘可能地置於上游,而即便將觸媒配置於座部下之位置附近,亦可減少熱對騎乘者之腳之影響。又,即便觸媒接近於配置在平板腳踏板之下方之燃料箱,亦可減少熱對燃料箱之影響。 In the straddle type vehicle of the present aspect, by bringing the catalyst into the exhaust pipe as much as possible upstream, the temperature rise of the catalyst after the engine is started can be accelerated, and the catalyst can be activated in advance. Further, after the catalyst is activated, the vehicle can be driven to cool the catalyst by the traveling wind between the fuel tank and the outer casing of the vehicle body. Therefore, by placing the catalyst in the exhaust pipe as much as possible upstream, even if the catalyst is disposed near the position below the seat portion, the influence of heat on the rider's foot can be reduced. Moreover, even if the catalyst is close to the fuel tank disposed below the flat foot pedal, the influence of heat on the fuel tank can be reduced.

較佳為,引擎之汽缸軸線配置於與鉛垂方向交叉之方向。引擎單元之搖動中心及觸媒收容部較汽缸軸線位於更下方。於觸媒收容部之整個搖動範圍內,觸媒收容部之至少一部分配置於燃料箱與車體外殼之間之空間之後方。於此情形時,可使觸媒始終位於行駛風經常吹到之位置。 Preferably, the cylinder axis of the engine is disposed in a direction crossing the vertical direction. The rocking center and the catalyst housing of the engine unit are located below the cylinder axis. At least a part of the catalyst containing portion is disposed behind the space between the fuel tank and the vehicle body casing within the entire shaking range of the catalyst containing portion. In this case, the catalyst can always be located where the driving wind is often blown.

較佳為,座部包含用以供騎乘者乘坐之前座部。觸媒收容部於車輛前後方向上與前座部重疊。觸媒收容部之至少一部分於側視車輛時露出。於前視車輛時,觸媒收容部之內側部與燃料箱重疊。 Preferably, the seat portion is for the rider to ride the front seat portion. The catalyst containing portion overlaps the front seat portion in the front-rear direction of the vehicle. At least a portion of the catalyst containing portion is exposed when the vehicle is viewed from the side. In the forward view vehicle, the inner portion of the catalyst containing portion overlaps with the fuel tank.

於此情形時,與觸媒收容部整體較燃料箱配置於車寬方向上之更外側之情形相比,可將觸媒收容部靠近車輛之中心側配置。藉此,可抑制對停車時著地之騎乘者之腳之熱影響。另一方面,由於觸媒收容部之至少一部分於側視車輛時露出,故而能更有效地冷卻觸媒之外側部。又,雖然行駛風難以到達至與燃料箱重疊之觸媒收容部之內側部,但由於觸媒收容部被充分地冷卻,故而對燃料箱之熱影響被抑 制。 In this case, the catalyst containing portion can be disposed closer to the center side of the vehicle than when the fuel tank is disposed outside the fuel tank in the vehicle width direction. Thereby, the thermal influence of the rider's foot on the ground at the time of parking can be suppressed. On the other hand, since at least a part of the catalyst containing portion is exposed when the vehicle is viewed from the side, the outer side portion of the catalyst can be more effectively cooled. Further, although it is difficult for the traveling wind to reach the inner portion of the catalyst containing portion that overlaps the fuel tank, since the catalyst containing portion is sufficiently cooled, the heat influence on the fuel tank is suppressed. system.

較佳為,燃料箱包含傾斜部。傾斜部係於前視車輛時朝向上方且外側方傾斜。於前視車輛時,傾斜部之至少一部分與觸媒收容部重疊。於此情形時,藉由利用傾斜部將行駛風引導至觸媒收容部,可提高觸媒之冷卻性能。 Preferably, the fuel tank includes an inclined portion. The inclined portion is inclined upward and outward when it is attached to the front view vehicle. At the time of the forward-looking vehicle, at least a portion of the inclined portion overlaps with the catalyst containing portion. In this case, by guiding the traveling wind to the catalyst containing portion by the inclined portion, the cooling performance of the catalyst can be improved.

較佳為,於前視車輛時,傾斜部之至少一部分與第1排氣管重疊。於此情形時,藉由利用傾斜部將行駛風引導至第1排氣管,可進一步提高觸媒之冷卻性能。 Preferably, at least a part of the inclined portion overlaps the first exhaust pipe in the forward view vehicle. In this case, by guiding the traveling wind to the first exhaust pipe by the inclined portion, the cooling performance of the catalyst can be further improved.

較佳為,引擎單元進而包含冷卻風扇裝置。觸媒收容部之至少一部分較冷卻風扇裝置之旋轉中心位於更前方。於此情形時,可利用由冷卻風扇裝置產生之氣流冷卻觸媒。藉此,可進一步提高觸媒之冷卻性能。 Preferably, the engine unit further comprises a cooling fan unit. At least a portion of the catalyst containing portion is located further forward than the center of rotation of the cooling fan device. In this case, the catalyst can be cooled by the air flow generated by the cooling fan unit. Thereby, the cooling performance of the catalyst can be further improved.

較佳為,引擎單元進而包含冷卻風扇裝置。冷卻風扇裝置與觸媒收容部相對於沿車輛前後方向延伸之車輛之中心線配置於同一側。於此情形時,可利用由冷卻風扇裝置產生之氣流冷卻觸媒。藉此,可進一步提高觸媒之冷卻性能。 Preferably, the engine unit further comprises a cooling fan unit. The cooling fan device and the catalyst containing portion are disposed on the same side with respect to the center line of the vehicle extending in the vehicle front-rear direction. In this case, the catalyst can be cooled by the air flow generated by the cooling fan unit. Thereby, the cooling performance of the catalyst can be further improved.

較佳為,車體外殼延伸至較燃料箱更靠後方之位置。於側視車輛時,觸媒收容部之至少一部分不與車體外殼重疊。於此情形時,藉由觸媒收容部之至少一部分露出,可進一步提高觸媒之冷卻性能。 Preferably, the body shell extends to a position further rearward than the fuel tank. When the vehicle is viewed from the side, at least a portion of the catalyst containing portion does not overlap with the vehicle body casing. In this case, by at least a part of the catalyst containing portion being exposed, the cooling performance of the catalyst can be further improved.

較佳為,跨坐型車輛進而包括連桿機構。連桿機構將引擎單元與車體框架連接。觸媒收容部之至少一部分位於連桿機構之側方。於此情形時,與配置於連桿機構之下方之情形相比,可將觸媒收容部儘可能地配置於上游,並且可確保使最小離地間隙(minimum ground clearance)較大。 Preferably, the straddle type vehicle further includes a link mechanism. The linkage mechanism connects the engine unit to the body frame. At least a portion of the catalyst containing portion is located on a side of the link mechanism. In this case, the catalyst accommodating portion can be disposed as far as possible upstream as compared with the case where it is disposed below the link mechanism, and the minimum ground clearance can be ensured to be large.

較佳為,跨坐型車輛進而包括連桿機構。連桿機構將引擎單元與車體框架連接。觸媒收容部之至少一部分於仰視車輛時位於連桿機 構之後方。於此情形時,與配置於連桿機構之下方之情形相比,可將觸媒收容部儘可能地配置於上游,並且可確保使最小離地間隙較大。 Preferably, the straddle type vehicle further includes a link mechanism. The linkage mechanism connects the engine unit to the body frame. At least a portion of the catalyst containment portion is located at the link machine when looking up the vehicle After the construction. In this case, the catalyst containing portion can be disposed as far as possible upstream as compared with the case where it is disposed below the link mechanism, and the minimum ground clearance can be ensured to be large.

較佳為,跨坐型車輛進而包括保護構件。保護構件配置於觸媒收容部之下方。於此情形時,可藉由保護構件保護觸媒收容部免受石頭等障礙物之傷害。 Preferably, the straddle type vehicle further includes a protective member. The protective member is disposed below the catalyst containing portion. In this case, the catalyst containing portion can be protected from obstacles such as stones by the protective member.

較佳為,跨坐型車輛進而包括連桿機構。連桿機構將引擎單元與車體框架連接。保護構件係安裝於連桿機構。於此情形時,可將保護構件容易地配置於觸媒收容部之下方。 Preferably, the straddle type vehicle further includes a link mechanism. The linkage mechanism connects the engine unit to the body frame. The protective member is attached to the link mechanism. In this case, the protective member can be easily disposed below the catalyst containing portion.

較佳為,保護構件係安裝於引擎。於此情形時,可將保護構件容易地配置於觸媒收容部之下方。 Preferably, the protective member is mounted to the engine. In this case, the protective member can be easily disposed below the catalyst containing portion.

較佳為,於保護構件與觸媒收容部之間設置有導風路徑、第1開口、及第2開口。第1開口於導風路徑之前方與外部之空間連通。第2開口於導風路徑之後方與外部之空間連通。於此情形時,藉由行駛風自第1開口通過導風路徑並自第2開口離去,可冷卻觸媒。藉此,可進一步提高觸媒之冷卻性能。 Preferably, an air guiding path, a first opening, and a second opening are provided between the protective member and the catalyst containing portion. The first opening communicates with the external space before the air guiding path. The second opening communicates with the external space behind the air guiding path. In this case, the catalyst can be cooled by the traveling wind passing through the air guiding path from the first opening and departing from the second opening. Thereby, the cooling performance of the catalyst can be further improved.

較佳為,引擎包含肋條。肋條自引擎延伸至較觸媒收容部更靠下方之位置。於此情形時,可藉由肋條保護觸媒收容部免受石頭等障礙物之傷害。 Preferably, the engine includes ribs. The rib extends from the engine to a position below the catalyst containing portion. In this case, the catalyst accommodation portion can be protected from obstacles such as stones by the ribs.

較佳為,引擎單元進而包含冷卻風扇裝置、及引擎用隔熱構件。冷卻風扇裝置配置於引擎之側方。引擎用隔熱構件配置於冷卻風扇裝置與觸媒收容部之間。於此情形時,可抑制觸媒之熱直接傳導至冷卻風扇裝置之冷卻風。又,藉由利用引擎用隔熱構件引導行駛風,可提高觸媒之冷卻性。 Preferably, the engine unit further includes a cooling fan device and a heat insulating member for the engine. The cooling fan unit is disposed on the side of the engine. The engine heat insulating member is disposed between the cooling fan device and the catalyst containing portion. In this case, it is possible to suppress the heat of the catalyst from being directly transmitted to the cooling air of the cooling fan unit. Moreover, by guiding the traveling wind by the heat insulating member for the engine, the cooling property of the catalyst can be improved.

較佳為,引擎單元進而包含引擎用隔熱構件。引擎用隔熱構件配置於引擎與觸媒收容部之間。於此情形時,可抑制觸媒之熱直接傳導至引擎。 Preferably, the engine unit further includes a heat insulating member for the engine. The engine heat insulating member is disposed between the engine and the catalyst containing portion. In this case, the heat of the catalyst can be suppressed from being directly transmitted to the engine.

較佳為,於引擎用隔熱構件與觸媒收容部之間設置有導風路徑、第1開口、及第2開口。第1開口於導風路徑之前方與外部之空間連通。2開口於導風路徑之後方與外部之空間連通。於此情形時,可藉由引擎用隔熱構件抑制觸媒之熱直接傳導至引擎。又,藉由行駛風自第1開口通過導風路徑並自第2開口離去,可冷卻觸媒。藉此,可進一步提高觸媒之冷卻性能。 Preferably, an air guiding path, a first opening, and a second opening are provided between the heat insulating member for the engine and the catalyst containing portion. The first opening communicates with the external space before the air guiding path. 2 Opening behind the air guiding path and communicating with the external space. In this case, the heat of the catalyst can be inhibited from being directly transmitted to the engine by the heat insulating member of the engine. Moreover, the catalyst can be cooled by the traveling wind passing through the air guiding path from the first opening and departing from the second opening. Thereby, the cooling performance of the catalyst can be further improved.

較佳為,跨坐型車輛進而包括燃料箱用隔熱構件。燃料箱用隔熱構件配置於燃料箱與觸媒收容部之間。於此情形時,可抑制觸媒之熱直接傳導至燃料箱。 Preferably, the straddle type vehicle further includes a heat insulating member for a fuel tank. The fuel tank heat insulating member is disposed between the fuel tank and the catalyst containing portion. In this case, the heat of the catalyst can be inhibited from being directly transmitted to the fuel tank.

較佳為,跨坐型車輛進而包括導風構件。導風構件配置於燃料箱與觸媒收容部之間,將行駛風自燃料箱之下方朝向觸媒收容部引導。於此情形時,藉由利用導風構件將流經燃料箱之下方之行駛風朝向觸媒收容部引導,可冷卻觸媒。藉此,可進一步提高觸媒之冷卻性能。 Preferably, the straddle type vehicle further includes a wind guide member. The wind guide member is disposed between the fuel tank and the catalyst containing portion, and guides the traveling wind from the lower side of the fuel tank toward the catalyst containing portion. In this case, the catalyst can be cooled by guiding the traveling wind flowing under the fuel tank toward the catalyst containing portion by the air guiding member. Thereby, the cooling performance of the catalyst can be further improved.

較佳為,於引擎單元位於搖動範圍內最下方之位置之狀態下,觸媒收容部之至少一部分較燃料箱之底面位於更下方。於此情形時,藉由觸媒收容部之至少一部分較燃料箱之底面位於更下方,而使行駛風易於到達至觸媒收容部。藉此,可進一步提高觸媒之冷卻能力。 Preferably, at least a portion of the catalyst containing portion is located below the bottom surface of the fuel tank in a state where the engine unit is located at the lowest position in the rocking range. In this case, at least a part of the catalyst containing portion is located below the bottom surface of the fuel tank, so that the traveling wind easily reaches the catalyst containing portion. Thereby, the cooling ability of the catalyst can be further improved.

較佳為,車體框架包含底部框架(lower frame)。底部框架通過平板腳踏板之下方並朝向後方延伸。於前視車輛時,觸媒收容部之至少一部分位於底部框架之下方。於此情形時,藉由利用底部框架將行駛風引導至觸媒收容部,可進一步提高觸媒之冷卻能力。 Preferably, the body frame includes a lower frame. The bottom frame extends below the flat foot pedal and toward the rear. In the case of a forward looking vehicle, at least a portion of the catalyst containment portion is located below the bottom frame. In this case, the cooling ability of the catalyst can be further improved by guiding the traveling wind to the catalyst containing portion by the bottom frame.

於本態樣之跨坐型車輛中,藉由將觸媒於排氣管內儘可能地置於上游,可加快引擎起動後之觸媒之溫度上升,從而可使觸媒提前活化。又,於觸媒活化之後,藉由車輛行駛,可利用通過燃料箱與車體 外殼之間之行駛風冷卻觸媒。因此,藉由將觸媒於排氣管內儘可能地置於上游,而即便將觸媒配置於座部下之位置附近,亦可減少熱對騎乘者之腳之影響。又,藉由將觸媒於排氣管內儘可能地置於上游,而即便觸媒接近於配置在平板腳踏板之下方之燃料箱,亦可減少熱對燃料箱之影響。 In the straddle type vehicle of the present aspect, by bringing the catalyst into the exhaust pipe as much as possible upstream, the temperature rise of the catalyst after the engine is started can be accelerated, and the catalyst can be activated in advance. Moreover, after the catalyst is activated, the vehicle can be used to pass through the fuel tank and the vehicle body. The traveling wind between the outer casing cools the catalyst. Therefore, by placing the catalyst in the exhaust pipe as much as possible upstream, even if the catalyst is disposed near the position below the seat portion, the influence of heat on the rider's foot can be reduced. Further, by placing the catalyst in the exhaust pipe as much as possible upstream, even if the catalyst is close to the fuel tank disposed below the flat foot pedal, the influence of heat on the fuel tank can be reduced.

1‧‧‧跨坐型車輛 1‧‧‧Sitting vehicle

2‧‧‧車體框架 2‧‧‧ body frame

3‧‧‧前叉 3‧‧‧ Front fork

4‧‧‧前輪 4‧‧‧ front wheel

5‧‧‧座部 5‧‧‧

5a‧‧‧前座部 5a‧‧‧Front seat

5b‧‧‧後座部 5b‧‧‧back seat

6‧‧‧車體外殼 6‧‧‧ body shell

7‧‧‧燃料箱 7‧‧‧fuel tank

8‧‧‧引擎單元 8‧‧‧ engine unit

9‧‧‧後輪 9‧‧‧ Rear wheel

10‧‧‧把手 10‧‧‧Hands

11‧‧‧頭管 11‧‧‧ head tube

12‧‧‧下框架 12‧‧‧ Lower frame

13‧‧‧第1底部框架 13‧‧‧1st bottom frame

14‧‧‧第2底部框架 14‧‧‧2nd bottom frame

15‧‧‧第1後框架 15‧‧‧1st back frame

16‧‧‧第2後框架 16‧‧‧2nd rear frame

17‧‧‧第1連結框架 17‧‧‧1st link frame

18‧‧‧第2連結框架 18‧‧‧2nd Linked Framework

21‧‧‧前外殼 21‧‧‧ front casing

22‧‧‧底部外殼 22‧‧‧ bottom shell

23‧‧‧後外殼 23‧‧‧ rear casing

23a‧‧‧後外殼之前部 23a‧‧‧The front part of the rear casing

23b‧‧‧後外殼之側部 23b‧‧‧Side side of the rear casing

24‧‧‧平板腳踏板 24‧‧‧ flat foot pedals

25‧‧‧第1側底部外殼 25‧‧‧1st bottom bottom shell

26‧‧‧第2側底部外殼 26‧‧‧2nd bottom bottom shell

27‧‧‧收容部 27‧‧‧ Housing Department

29‧‧‧中間底部外殼 29‧‧‧Intermediate bottom casing

31‧‧‧引擎 31‧‧‧ Engine

32‧‧‧變速箱 32‧‧‧Transmission

33‧‧‧冷卻風扇裝置 33‧‧‧Cooling fan unit

34‧‧‧排氣管 34‧‧‧Exhaust pipe

35‧‧‧消音器 35‧‧‧Muffler

36‧‧‧觸媒 36‧‧‧ catalyst

37‧‧‧連桿機構 37‧‧‧ linkage mechanism

37a‧‧‧第1連桿部 37a‧‧‧1st link

37b‧‧‧第2連桿部 37b‧‧‧2nd link

41‧‧‧第1排氣管 41‧‧‧1st exhaust pipe

42‧‧‧觸媒收容部 42‧‧‧ Catalyst Containment Department

43‧‧‧第2排氣管 43‧‧‧2nd exhaust pipe

45‧‧‧風扇外殼 45‧‧‧Fan casing

46‧‧‧冷卻風扇 46‧‧‧Cooling fan

51‧‧‧保護構件 51‧‧‧Protection components

52‧‧‧導風路徑 52‧‧‧ Wind path

53‧‧‧第1開口 53‧‧‧1st opening

54‧‧‧第2開口 54‧‧‧2nd opening

55‧‧‧肋條 55‧‧‧ Ribs

56‧‧‧引擎用隔熱構件 56‧‧‧Insulation members for engines

57‧‧‧燃料箱用隔熱構件 57‧‧‧Insulation members for fuel tanks

58‧‧‧導風構件 58‧‧‧air guiding members

61‧‧‧第1開口部 61‧‧‧1st opening

62‧‧‧第2開口部 62‧‧‧2nd opening

63‧‧‧第3開口部 63‧‧‧3rd opening

64‧‧‧第4開口部 64‧‧‧4th opening

65‧‧‧第5開口部 65‧‧‧5th opening

71‧‧‧箱本體 71‧‧‧ box body

72‧‧‧第1外殼安裝部 72‧‧‧1st outer casing installation

73‧‧‧第2外殼安裝部 73‧‧‧2nd outer casing installation

74‧‧‧第1傾斜部 74‧‧‧1st inclined part

75‧‧‧第2傾斜部 75‧‧‧2nd inclined part

76‧‧‧供油口 76‧‧‧ oil supply port

77‧‧‧第1箱安裝部 77‧‧‧1st box installation

78‧‧‧第2箱安裝部 78‧‧‧Second box installation department

79‧‧‧箱外殼 79‧‧‧ box enclosure

100‧‧‧跨坐型車輛 100‧‧‧Sitting vehicle

251‧‧‧凹部 251‧‧‧ recess

281‧‧‧開口部 281‧‧‧ openings

282‧‧‧開口部 282‧‧‧ openings

311‧‧‧曲軸箱 311‧‧‧ crankcase

312‧‧‧汽缸 312‧‧ ‧ cylinder

313‧‧‧曲柄軸 313‧‧‧ crankshaft

314‧‧‧排氣埠 314‧‧‧Exhaust gas

315‧‧‧進氣埠 315‧‧‧ intake 埠

451‧‧‧格柵部 451‧‧‧Mesh Department

452‧‧‧排氣管外殼部 452‧‧‧Exhaust pipe outer casing

A1‧‧‧箭頭 A1‧‧‧ arrow

A2‧‧‧箭頭 A2‧‧‧ arrow

AX1‧‧‧汽缸軸線 AX1‧‧‧Cylinder axis

C1‧‧‧搖動中心 C1‧‧‧Shake Center

C2‧‧‧旋轉中心 C2‧‧‧ Rotation Center

C3‧‧‧中心線 C3‧‧‧ center line

圖1係跨坐型車輛之右側視圖。 Figure 1 is a right side view of a straddle type vehicle.

圖2係表示跨坐型車輛之車體框架與引擎單元之右側視圖。 2 is a right side view showing a body frame and an engine unit of a straddle type vehicle.

圖3係表示車體框架與引擎單元之仰視圖。 Figure 3 is a bottom plan view showing the body frame and the engine unit.

圖4係表示車體框架與引擎單元之前視圖。 Figure 4 is a front view showing the body frame and the engine unit.

圖5係表示跨坐型車輛之一部分之右側視圖。 Figure 5 is a right side view showing a portion of a straddle type vehicle.

圖6係表示跨坐型車輛之一部分之仰視圖。 Figure 6 is a bottom plan view showing a portion of a straddle type vehicle.

圖7係圖6中之VII-VII剖視圖。 Figure 7 is a cross-sectional view taken along line VII-VII of Figure 6.

圖8係引擎單元之剖視圖。 Figure 8 is a cross-sectional view of the engine unit.

圖9係表示引擎單元位於搖動範圍內最下方之位置之狀態之圖。 Fig. 9 is a view showing a state in which the engine unit is located at the lowest position in the rocking range.

圖10係表示引擎單元位於搖動範圍內最上方之位置之狀態之圖。 Fig. 10 is a view showing a state in which the engine unit is located at the uppermost position in the shaking range.

圖11係表示車體框架與引擎單元之一部分之前視圖。 Figure 11 is a front elevational view showing a portion of the body frame and the engine unit.

圖12A、12B係表示第1變化例之跨坐型車輛之一部分之圖。 12A and 12B are views showing a part of a straddle type vehicle according to a first modification.

圖13A、13B係表示第2變化例之跨坐型車輛之一部分之圖。 13A and 13B are views showing a part of a straddle type vehicle according to a second modification.

圖14係表示第1變化例或第2變化例之又一例之保護構件及觸媒收容部之剖視圖。 Fig. 14 is a cross-sectional view showing a protective member and a catalyst containing portion of still another example of the first modification or the second modification.

圖15A、15B係表示第4變化例之跨坐型車輛之一部分之圖。 15A and 15B are views showing a part of a straddle type vehicle of a fourth modification.

圖16A、16B係表示第5變化例之跨坐型車輛之一部分之圖。 16A and 16B are views showing a part of a straddle type vehicle of a fifth modification.

圖17係表示第6變化例之跨坐型車輛之一部分之仰視圖。 Fig. 17 is a bottom plan view showing a part of a straddle type vehicle of a sixth modification.

圖18A、18B係表示第7變化例之跨坐型車輛之一部分之圖。 18A and 18B are views showing a part of a straddle type vehicle of a seventh modification.

圖19A、19B係表示第8變化例之跨坐型車輛之一部分之圖。 19A and 19B are views showing a part of a straddle type vehicle of an eighth modification.

圖20A、20B係表示第9變化例之跨坐型車輛之一部分之圖。 20A and 20B are views showing a part of a straddle type vehicle of a ninth modification.

圖21係表示第10變化例之跨坐型車輛之一部分之圖。 Fig. 21 is a view showing a part of a straddle type vehicle of a tenth modification.

圖22係表示第11變化例之跨坐型車輛之一部分之仰視圖。 Fig. 22 is a bottom plan view showing a part of the straddle type vehicle of the eleventh modification.

圖23係第11變化例之跨坐型車輛之側視圖。 Fig. 23 is a side view of the straddle type vehicle of the eleventh modification.

以下,參照圖式對實施形態之跨坐型車輛進行說明。圖1係實施形態之跨坐型車輛1之右側視圖。跨坐型車輛1係速克達型機車。跨坐型車輛1包括車體框架2、前叉3、前輪4、座部5、車體外殼6、燃料箱7、引擎單元8、及後輪9。再者,於本實施形態中,前後左右之方向係指由乘坐於座部5之騎乘者觀看時之方向。 Hereinafter, a straddle type vehicle of an embodiment will be described with reference to the drawings. Fig. 1 is a right side view of the straddle type vehicle 1 of the embodiment. The straddle type vehicle 1 is a speed locomotive. The straddle type vehicle 1 includes a body frame 2, a front fork 3, a front wheel 4, a seat portion 5, a vehicle body casing 6, a fuel tank 7, an engine unit 8, and a rear wheel 9. Further, in the present embodiment, the directions of the front, rear, left, and right directions refer to the direction when the rider riding on the seat portion 5 views.

車體框架2包含頭管11、及下框架12。頭管11將前叉3可轉動地支持。於前叉3之上部安裝把手10。前叉3之下部將前輪4可旋轉地支持。下框架12自頭管11向下方延伸。 The body frame 2 includes a head pipe 11 and a lower frame 12. The head pipe 11 rotatably supports the front fork 3. A handle 10 is mounted on the upper portion of the front fork 3. The lower portion of the front fork 3 rotatably supports the front wheel 4. The lower frame 12 extends downward from the head pipe 11.

圖2係表示車體框架2與引擎單元8之右側視圖。圖3係表示車體框架2與引擎單元8之仰視圖。圖4係表示車體框架2與引擎單元8之前視圖。如圖1至圖4所示,車體框架2包含第1底部框架13、第2底部框架14、第1後框架15、及第2後框架16。 2 is a right side view showing the vehicle body frame 2 and the engine unit 8. 3 is a bottom view showing the vehicle body frame 2 and the engine unit 8. 4 is a front view showing the body frame 2 and the engine unit 8. As shown in FIGS. 1 to 4 , the vehicle body frame 2 includes a first bottom frame 13 , a second bottom frame 14 , a first rear frame 15 , and a second rear frame 16 .

第1底部框架13及第2底部框架14與下框架12之下部連接,自下框架12之下部向後方延伸。詳細而言,第1底部框架13朝向後斜上方傾斜。第2底部框架14朝向後斜下方傾斜。第1底部框架13與第2底部框架14於車寬方向上隔開配置。於本實施形態中,第1底部框架13為右底部框架,第2底部框架14為左底部框架。第1底部框架13與下框架12之連接部較第2底部框架14與下框架12之連接部位於更下方。 The first bottom frame 13 and the second bottom frame 14 are connected to the lower portion of the lower frame 12, and extend rearward from the lower portion of the lower frame 12. Specifically, the first bottom frame 13 is inclined obliquely upward toward the rear. The second bottom frame 14 is inclined obliquely downward toward the rear. The first bottom frame 13 and the second bottom frame 14 are spaced apart from each other in the vehicle width direction. In the present embodiment, the first bottom frame 13 is a right bottom frame, and the second bottom frame 14 is a left bottom frame. The connection portion between the first bottom frame 13 and the lower frame 12 is located below the connection portion between the second bottom frame 14 and the lower frame 12.

第1後框架15與第1底部框架13之後部連接,自第1底部框架13之後部向斜後上方延伸。第2後框架16與第2底部框架14之後部連接,自 第2底部框架14之後部向斜後上方延伸。於本實施形態中,第1後框架15為右側之後框架,第2後框架16為左側之後框架。 The first rear frame 15 is connected to the rear portion of the first bottom frame 13, and extends obliquely rearward and upward from the rear portion of the first bottom frame 13. The second rear frame 16 is connected to the rear portion of the second bottom frame 14 from The rear portion of the second bottom frame 14 extends obliquely rearward and upward. In the present embodiment, the first rear frame 15 is a right rear frame, and the second rear frame 16 is a left rear frame.

再者,頭管11、下框架12、底部框架13、14、及後框架15、16之一部分或全部亦可為一體之構件。或者,頭管11、下框架12、底部框架13、14、及後框架15、16之一部分或全部亦可為個別構件,且藉由焊接等固定方法而相互接合。 Further, part or all of the head pipe 11, the lower frame 12, the bottom frames 13, 14 and the rear frames 15, 16 may be an integral member. Alternatively, part or all of the head pipe 11, the lower frame 12, the bottom frames 13, 14, and the rear frames 15, 16 may be individual members and joined to each other by a fixing method such as welding.

如圖3所示,車體框架2包含第1連結框架17。第1連結框架17沿車寬方向延伸。第1連結框架17係跨及第1底部框架13與第2底部框架14而設置。第1連結框架17將第1底部框架13與第2底部框架14連結。如圖2及圖4所示,車體框架2包含第2連結框架18。第2連結框架18係跨及第1後框架15與第2後框架16而設置。第1連結框架17將第1後框架15與第2後框架16連結。 As shown in FIG. 3, the vehicle body frame 2 includes a first connecting frame 17. The first joint frame 17 extends in the vehicle width direction. The first connecting frame 17 is provided across the first bottom frame 13 and the second bottom frame 14. The first connecting frame 17 connects the first bottom frame 13 and the second bottom frame 14 . As shown in FIGS. 2 and 4 , the vehicle body frame 2 includes a second connecting frame 18 . The second connecting frame 18 is provided across the first rear frame 15 and the second rear frame 16. The first connecting frame 17 connects the first rear frame 15 and the second rear frame 16 .

如圖1所示,座部5支持於車體框架2。詳細而言,收容部27支持於車體框架2,於該收容部27支持有座部5。座部5配置於第1後框架15及第2後框架16之上方。座部5包含前座部5a與後座部5b。前座部5a係供騎乘者乘坐之部分。後座部5b位於前座部5a之後方,後座部5b之上表面較前座部5a之上表面位於更上方。再者,前座部5a與後座部5b亦可不必被明確地區分開,後座部5b之上表面亦可與前座部5a之上表面為同一平面。於此情形時,前座部可為座部5之全長之前半部分。或者,於對座部5賦予有階差之情形時,前座部亦可為較階差靠前之部分。 As shown in FIG. 1, the seat portion 5 is supported by the vehicle body frame 2. Specifically, the accommodating portion 27 is supported by the vehicle body frame 2, and the seat portion 5 is supported by the accommodating portion 27. The seat portion 5 is disposed above the first rear frame 15 and the second rear frame 16. The seat portion 5 includes a front seat portion 5a and a rear seat portion 5b. The front seat portion 5a is a portion for the rider to ride. The rear seat portion 5b is located behind the front seat portion 5a, and the upper surface of the rear seat portion 5b is located above the upper surface of the front seat portion 5a. Further, the front seat portion 5a and the rear seat portion 5b do not have to be clearly separated, and the upper surface of the rear seat portion 5b may be flush with the upper surface of the front seat portion 5a. In this case, the front seat portion may be the first half of the full length of the seat portion 5. Alternatively, when a step difference is given to the seat portion 5, the front seat portion may be a portion having a higher step.

車體外殼6支持於車體框架2。車體外殼6包含前外殼21、底部外殼22、及後外殼23。前外殼21覆蓋頭管11與下框架12之周圍。底部外殼22覆蓋第1底部框架13與第2底部框架14之周圍。 The body casing 6 is supported by the body frame 2. The vehicle body casing 6 includes a front outer casing 21, a bottom outer casing 22, and a rear outer casing 23. The front outer casing 21 covers the circumference of the head pipe 11 and the lower frame 12. The bottom case 22 covers the periphery of the first bottom frame 13 and the second bottom frame 14.

詳細而言,底部外殼22包含平板腳踏板24。平板腳踏板24係底部外殼22之上表面。平板腳踏板24較座部5配置於更下方且更前方。 平板腳踏板24配置於第1底部框架13及第2底部框架14之上方。第1底部框架13及第2底部框架14通過平板腳踏板24之下方且朝向後方延伸。平板腳踏板24具有平坦之形狀。 In detail, the bottom housing 22 includes a flat foot pedal 24. The flat footboard 24 is the upper surface of the bottom outer casing 22. The flat footboard 24 is disposed further below and further forward than the seat portion 5. The flat footboard 24 is disposed above the first bottom frame 13 and the second bottom frame 14. The first bottom frame 13 and the second bottom frame 14 extend below the flat footboard 24 and extend rearward. The flat footboard 24 has a flat shape.

再者,所謂「平板腳踏板24平坦」,意指平板腳踏板24遍及車寬方向平坦,於平板腳踏板24之車寬方向上之中央不存在用以設置供配置車體框架2之一部分之空間的凸部。或者,所謂「平板腳踏板24平坦」,意指平坦成騎乘者可於平板腳踏板24之任一部分放置腳之程度。因此,亦可於平板腳踏板24形成例如用以防滑等之凹凸。 In addition, the "flat foot pedal 24 is flat" means that the flat footboard 24 is flat in the vehicle width direction, and there is no center for the vehicle body frame 2 in the vehicle width direction of the flat footboard 24. a part of the space of the convex part. Alternatively, the term "flat foot pedal 24 flat" means flat to the extent that the rider can place the foot on any part of the flat footboard 24. Therefore, it is also possible to form, for example, unevenness for slipping or the like on the flat footboard 24.

圖5係表示跨坐型車輛1之一部分之右側視圖。圖6係表示跨坐型車輛1之一部分之仰視圖。如圖5及圖6所示,底部外殼22包含第1側底部外殼25、第2側底部外殼26、及中間底部外殼29。第1側底部外殼25配置於燃料箱7之一側方,第2側底部外殼26配置於燃料箱7之另一側方。於本實施形態中,第1側底部外殼25配置於燃料箱7之右方,第2側底部外殼26配置於燃料箱7之左方。中間底部外殼29配置於第1側底部外殼25與第2側底部外殼26之間。再者,於圖6中,為了容易理解,僅將中間底部外殼29之外形以短劃線(dashed line)表示。 FIG. 5 is a right side view showing a portion of the straddle type vehicle 1. Fig. 6 is a bottom view showing a part of the straddle type vehicle 1. As shown in FIGS. 5 and 6, the bottom casing 22 includes a first side bottom casing 25, a second side bottom casing 26, and an intermediate bottom casing 29. The first side bottom outer casing 25 is disposed on one side of the fuel tank 7, and the second side bottom outer casing 26 is disposed on the other side of the fuel tank 7. In the present embodiment, the first side bottom outer casing 25 is disposed on the right side of the fuel tank 7, and the second side bottom outer casing 26 is disposed on the left side of the fuel tank 7. The intermediate bottom casing 29 is disposed between the first side bottom casing 25 and the second side bottom casing 26. Further, in Fig. 6, for the sake of easy understanding, only the outer bottom case 29 is formed in a dashed line.

第1側底部外殼25自側方覆蓋第1底部框架13。第1側底部外殼25配置於第1底部框架13之右方。第1側底部外殼25延伸至較燃料箱7更靠後方之位置。再者,只要第1側底部外殼25之一部分位於燃料箱7之側方即可。第2側底部外殼26覆蓋第2底部框架14之側方。第2側底部外殼26配置於第2底部框架14之左方。 The first side bottom outer casing 25 covers the first bottom frame 13 from the side. The first side bottom outer casing 25 is disposed to the right of the first bottom frame 13. The first side bottom outer casing 25 extends to a position further rearward than the fuel tank 7. Further, it is sufficient that one of the first side bottom outer casings 25 is located on the side of the fuel tank 7. The second side bottom outer casing 26 covers the side of the second bottom frame 14. The second side bottom case 26 is disposed to the left of the second bottom frame 14.

如圖1所示,後外殼23配置於座部5之下方,包圍座部5下方之空間之周圍。後外殼23之前部23a自平板腳踏板24之後端向上方延伸。後外殼23之側部23b自側方覆蓋座部5下方之空間。再者,於座部5之下方配置有收容部27。收容部27位於引擎單元8之上方。 As shown in FIG. 1, the rear outer casing 23 is disposed below the seat portion 5 and surrounds the space below the seat portion 5. The front portion 23a of the rear outer casing 23 extends upward from the rear end of the flat footboard 24. The side portion 23b of the rear outer casing 23 covers the space below the seat portion 5 from the side. Further, a housing portion 27 is disposed below the seat portion 5. The accommodating portion 27 is located above the engine unit 8.

燃料箱7配置於平板腳踏板24之下方。如圖2至圖4所示,燃料箱 7包含具有貯存燃料之內部空間之箱本體71、及箱外殼79。箱本體71配置於第1底部框架13與第2底部框架14之間。箱本體71配置於第1連結框架17之前方。於側視車輛時,箱本體71與第1底部框架13重疊。箱本體71包含第1箱安裝部77及第2箱安裝部78。箱本體71於第1箱安裝部77被安裝於第1底部框架13。箱本體71於第2箱安裝部78被安裝於第2底部框架14。 The fuel tank 7 is disposed below the flat footboard 24. As shown in Figure 2 to Figure 4, the fuel tank 7 includes a tank body 71 having an internal space for storing fuel, and a tank casing 79. The box body 71 is disposed between the first bottom frame 13 and the second bottom frame 14. The tank body 71 is disposed in front of the first joint frame 17 . The box body 71 overlaps the first bottom frame 13 when the vehicle is viewed from the side. The tank body 71 includes a first tank mounting portion 77 and a second tank mounting portion 78. The tank body 71 is attached to the first bottom frame 13 at the first tank mounting portion 77. The tank body 71 is attached to the second bottom frame 14 at the second tank mounting portion 78.

箱外殼79配置於箱本體71之下方。箱外殼79包含第1外殼安裝部72及第2外殼安裝部73。第1外殼安裝部72具有凸緣狀之形狀。第1外殼安裝部72係安裝於第1底部框架13、第2底部框架14及第1連結框架17。第2外殼安裝部73之前端係安裝於下框架12之下端部。 The case outer casing 79 is disposed below the case body 71. The case casing 79 includes a first case attaching portion 72 and a second case attaching portion 73. The first outer casing attaching portion 72 has a flange shape. The first outer casing attaching portion 72 is attached to the first bottom frame 13 , the second bottom frame 14 , and the first connecting frame 17 . The front end of the second outer casing mounting portion 73 is attached to the lower end portion of the lower frame 12.

上述中間底部外殼29並未設置於箱外殼79之下方。即,中間底部外殼29較箱外殼79配置於更前方。箱外殼79之底面較中間底部外殼29位於更下方。即,燃料箱7之底面較中間底部外殼29位於更下方。 The intermediate bottom casing 29 is not disposed below the tank casing 79. That is, the intermediate bottom casing 29 is disposed further forward than the tank casing 79. The bottom surface of the tank casing 79 is located further below the intermediate bottom casing 29. That is, the bottom surface of the fuel tank 7 is located further below the intermediate bottom casing 29.

箱外殼79包含第1傾斜部74及第2傾斜部75。第1傾斜部74與第2傾斜部75於前視車輛時朝向上方且外側方傾斜。詳細而言,第1傾斜部74為箱外殼79之底面之右側部。第1傾斜部74朝向上方且右方傾斜。第2傾斜部75為箱外殼79之底面之左側部。第2傾斜部75朝向上方且左方傾斜。第1傾斜部74與第2傾斜部75較第1外殼安裝部72位於更下方。第1傾斜部74較第1底部框架13位於更下方。第2傾斜部75較第2底部框架14位於更下方。 The tank casing 79 includes a first inclined portion 74 and a second inclined portion 75. The first inclined portion 74 and the second inclined portion 75 are inclined upward and outward in the forward view vehicle. Specifically, the first inclined portion 74 is a right side portion of the bottom surface of the case outer casing 79. The first inclined portion 74 is inclined upward and to the right. The second inclined portion 75 is a left side portion of the bottom surface of the case outer casing 79. The second inclined portion 75 is inclined upward and leftward. The first inclined portion 74 and the second inclined portion 75 are located below the first outer casing attaching portion 72. The first inclined portion 74 is located below the first bottom frame 13 . The second inclined portion 75 is located below the second bottom frame 14.

如圖4所示,於箱本體71連接有供油口76,該供油口76供安裝用以對箱本體71供給燃料之燃料管。供油口76自箱本體71突出。於前視車輛時,供油口76位於第2底部框架14之下方。於前視車輛時,供油口76位於和第1底部框架13與下框架12之連接部大概相同之高度。 As shown in FIG. 4, an oil supply port 76 is attached to the tank body 71, and the fuel supply port 76 is provided with a fuel pipe for supplying fuel to the tank body 71. The fuel supply port 76 protrudes from the tank body 71. In the case of a forward looking vehicle, the fuel supply port 76 is located below the second bottom frame 14. In the case of the forward-looking vehicle, the fuel supply port 76 is located at approximately the same height as the connection portion between the first bottom frame 13 and the lower frame 12.

如圖6所示,於燃料箱7之至少一部分之下方並未設置底部外殼22。因此,於燃料箱7與底部外殼22之間設置有間隙。圖7係圖6中之 VII-VII剖視圖。如圖7所示,於燃料箱7與第1側底部外殼25之間設置有間隙61(以下,稱為「第1開口部61」)。又,於燃料箱7與第2側底部外殼26之間設置有間隙62(以下,稱為「第2開口部62」)。第1開口部61與第2開口部62將行駛風導入至燃料箱7與車體外殼6之間。 As shown in FIG. 6, the bottom casing 22 is not disposed below at least a portion of the fuel tank 7. Therefore, a gap is provided between the fuel tank 7 and the bottom casing 22. Figure 7 is the figure in Figure 6. Section VII-VII. As shown in FIG. 7, a gap 61 (hereinafter referred to as "first opening 61") is provided between the fuel tank 7 and the first side bottom casing 25. Further, a gap 62 (hereinafter referred to as "second opening portion 62") is provided between the fuel tank 7 and the second side bottom casing 26. The first opening portion 61 and the second opening portion 62 guide the traveling wind between the fuel tank 7 and the vehicle body casing 6 .

又,箱外殼79包含第3開口部63。第3開口部63設置於箱外殼79之車寬方向上之中央部。又,箱外殼79包含第4開口部64及第5開口部65。第4開口部64設置於第1傾斜部74。第5開口部65設置於第2傾斜部75。第3~第5開口部63-65將行駛風導入至箱本體71與箱外殼79之間之空間。行駛風係藉由通過箱本體71與箱外殼79之間之空間,而被導入至燃料箱7與車體外殼6之間。 Further, the tank casing 79 includes a third opening portion 63. The third opening portion 63 is provided at a central portion of the case outer casing 79 in the vehicle width direction. Further, the tank casing 79 includes a fourth opening portion 64 and a fifth opening portion 65. The fourth opening portion 64 is provided in the first inclined portion 74. The fifth opening 65 is provided in the second inclined portion 75. The third to fifth opening portions 63-65 guide the traveling wind into the space between the box body 71 and the tank case 79. The traveling wind is introduced between the fuel tank 7 and the vehicle body casing 6 through the space between the tank body 71 and the tank casing 79.

藉由如以上般自第1~第5開口部61-65導入行駛風,而如圖3所示般將行駛風導入至燃料箱7與第1側底部外殼25之間(參照圖3之二點鏈線之箭頭A1)。又,將行駛風導入至燃料箱7與第2側底部外殼26之間(參照圖3之二點鏈線之箭頭A2)。 By introducing the traveling wind from the first to fifth opening portions 61-65 as described above, the traveling wind is introduced between the fuel tank 7 and the first side bottom casing 25 as shown in FIG. 3 (refer to FIG. Point arrow A1). Further, the traveling wind is introduced between the fuel tank 7 and the second side bottom casing 26 (see an arrow A2 of the two-dot chain line in Fig. 3).

如圖1所示,引擎單元8配置於平板腳踏板24及燃料箱7之後方。引擎單元8係可搖動地支持於車體框架2之所謂的單元擺動型單元。引擎單元8位於座部5之下方。引擎單元8將後輪9可旋轉地支持。引擎單元8包含引擎31、變速箱32、冷卻風扇裝置33、排氣管34、消音器35、及觸媒36。 As shown in FIG. 1, the engine unit 8 is disposed behind the flat footboard 24 and the fuel tank 7. The engine unit 8 is a so-called unit swing type unit that is rockably supported by the vehicle body frame 2. The engine unit 8 is located below the seat 5. The engine unit 8 rotatably supports the rear wheel 9. The engine unit 8 includes an engine 31, a transmission 32, a cooling fan unit 33, an exhaust pipe 34, a muffler 35, and a catalyst 36.

引擎31係空冷式引擎。引擎31配置於座部5之下方。圖10係引擎單元8之剖視圖。引擎31包含曲軸箱311及汽缸312。曲軸箱311收容有曲柄軸313。曲柄軸313之旋轉軸線沿車寬方向延伸。如圖2所示,汽缸312配置於曲軸箱311之前方。汽缸312配置於第1後框架15與第2後框架16之間,汽缸312之一部分較第1後框架15與第2後框架16向更前方突出。汽缸312之中心軸線即汽缸軸線Ax1配置於與鉛垂方向交叉之方向。詳細而言,汽缸312之汽缸軸線Ax1朝向前斜上方傾斜。 The engine 31 is an air-cooled engine. The engine 31 is disposed below the seat portion 5. Figure 10 is a cross-sectional view of the engine unit 8. The engine 31 includes a crankcase 311 and a cylinder 312. The crankcase 311 houses a crankshaft 313. The rotation axis of the crankshaft 313 extends in the vehicle width direction. As shown in FIG. 2, the cylinder 312 is disposed in front of the crankcase 311. The cylinder 312 is disposed between the first rear frame 15 and the second rear frame 16, and one of the cylinders 312 protrudes further forward than the first rear frame 15 and the second rear frame 16. The cylinder axis Ax1, which is the central axis of the cylinder 312, is disposed in a direction crossing the vertical direction. In detail, the cylinder axis Ax1 of the cylinder 312 is inclined obliquely upward toward the front.

如圖2所示,引擎單元8係經由連桿機構37而連接於車體框架2。引擎單元8係設置成可繞搖動中心C1搖動,該搖動中心C1位於連桿機構37與車體框架2之連接部。搖動中心C1較汽缸軸線Ax1位於更下方。 As shown in FIG. 2, the engine unit 8 is connected to the vehicle body frame 2 via a link mechanism 37. The engine unit 8 is arranged to be rockable about a rocking center C1 which is located at a connection portion of the link mechanism 37 and the vehicle body frame 2. The rocking center C1 is located below the cylinder axis Ax1.

變速箱32配置於曲軸箱311之一側方。冷卻風扇裝置33配置於曲軸箱311之另一側方。於本實施形態中,變速箱32配置於曲軸箱311之左方,冷卻風扇裝置33配置於曲軸箱311之右方。變速箱32自曲軸箱311之側方之位置朝向後方延伸,且支持後輪9。 The transmission case 32 is disposed on one side of the crankcase 311. The cooling fan unit 33 is disposed on the other side of the crankcase 311. In the present embodiment, the transmission case 32 is disposed to the left of the crankcase 311, and the cooling fan device 33 is disposed to the right of the crankcase 311. The gearbox 32 extends rearward from the side of the crankcase 311 and supports the rear wheel 9.

冷卻風扇裝置33產生用以冷卻引擎31之氣流。冷卻風扇裝置33藉由產生流經引擎31之周圍之氣流,而冷卻引擎31。冷卻風扇裝置33配置於第1側底部外殼25之後方。冷卻風扇裝置33配置於第1後框架15之後方。冷卻風扇裝置33具有風扇外殼45及冷卻風扇46。 The cooling fan unit 33 generates an air flow for cooling the engine 31. The cooling fan unit 33 cools the engine 31 by generating an air flow flowing around the engine 31. The cooling fan device 33 is disposed behind the first side bottom case 25. The cooling fan device 33 is disposed behind the first rear frame 15. The cooling fan unit 33 has a fan casing 45 and a cooling fan 46.

風扇外殼45自側方覆蓋冷卻風扇46。冷卻風扇46係設置成可繞旋轉中心C2旋轉。風扇外殼45包含格柵部451及排氣管外殼部452。格柵部451設置於與冷卻風扇46相對向之位置。排氣管外殼部452自側方覆蓋排氣管34之一部分。 The fan casing 45 covers the cooling fan 46 from the side. The cooling fan 46 is disposed to be rotatable about a rotation center C2. The fan casing 45 includes a grill portion 451 and an exhaust pipe outer casing portion 452. The grill portion 451 is disposed at a position opposed to the cooling fan 46. The exhaust pipe outer casing portion 452 covers a portion of the exhaust pipe 34 from the side.

如圖2所示,汽缸312包含排氣埠314及進氣埠315。排氣埠314較進氣埠315位於更下方。排氣管34連接於排氣埠314。消音器35連接於排氣管34。消音器35較汽缸312配置於更後方。消音器35配置於後輪9之側方,於側視車輛時與後輪9重疊。於本實施形態中,消音器35配置於後輪9之右方。觸媒36配置於排氣管34內。 As shown in FIG. 2, the cylinder 312 includes an exhaust port 314 and an intake port 315. The exhaust port 314 is located further below the intake port 315. The exhaust pipe 34 is connected to the exhaust port 314. The muffler 35 is connected to the exhaust pipe 34. The muffler 35 is disposed further rearward than the cylinder 312. The muffler 35 is disposed on the side of the rear wheel 9, and overlaps the rear wheel 9 when the vehicle is viewed from the side. In the present embodiment, the muffler 35 is disposed on the right side of the rear wheel 9. The catalyst 36 is disposed in the exhaust pipe 34.

排氣管34包含第1排氣管41、觸媒收容部42、及第2排氣管43。第1排氣管41係排氣管34中之排氣之流向中位於觸媒36之上游之部分,連接於排氣埠314。排氣埠314設置於汽缸312之側面。第1排氣管41自排氣埠314向下方突出,且朝向後方彎曲。第1排氣管41係以通過連桿機構37之側方之方式配置。 The exhaust pipe 34 includes a first exhaust pipe 41 , a catalyst storage portion 42 , and a second exhaust pipe 43 . The first exhaust pipe 41 is a portion of the exhaust pipe 34 that is located upstream of the catalyst 36 and is connected to the exhaust port 314. Exhaust manifold 314 is disposed on the side of cylinder 312. The first exhaust pipe 41 protrudes downward from the exhaust port 314 and is bent rearward. The first exhaust pipe 41 is disposed to pass the side of the link mechanism 37.

觸媒收容部42收容有觸媒36。觸媒收容部之外徑大於第1排氣管41之外徑。觸媒收容部42之外徑大於第2排氣管43之外徑。觸媒收容部42連接於第1排氣管41,且向後方延伸。觸媒收容部42較汽缸軸線Ax1位於更下方。如圖4及圖7所示,觸媒收容部42之一部分配置於燃料箱7與第1側底部外殼25之間之空間之後方。再者,於圖4中,以短劃線表示第1側底部外殼25之後緣之一部分。於圖7中,以短劃線表示觸媒36之前端部分之觸媒收容部42與觸媒36之外形。 The catalyst storage unit 42 houses the catalyst 36. The outer diameter of the catalyst containing portion is larger than the outer diameter of the first exhaust pipe 41. The outer diameter of the catalyst containing portion 42 is larger than the outer diameter of the second exhaust pipe 43. The catalyst storage unit 42 is connected to the first exhaust pipe 41 and extends rearward. The catalyst containing portion 42 is located below the cylinder axis Ax1. As shown in FIGS. 4 and 7, one portion of the catalyst containing portion 42 is disposed behind the space between the fuel tank 7 and the first side bottom casing 25. Further, in Fig. 4, a part of the trailing edge of the first side bottom case 25 is indicated by a dashed line. In FIG. 7, the catalyst containing portion 42 and the catalyst 36 of the front end portion of the catalyst 36 are indicated by dashed lines.

第2排氣管43係位於觸媒36之下游之部分。第2排氣管43連接於觸媒收容部42,且自觸媒收容部42之後端向後方延伸。第2排氣管43配置於觸媒收容部42與消音器35之間,且連接於消音器35。 The second exhaust pipe 43 is located downstream of the catalyst 36. The second exhaust pipe 43 is connected to the catalyst containing portion 42 and extends rearward from the rear end of the catalyst containing portion 42. The second exhaust pipe 43 is disposed between the catalyst storage portion 42 and the muffler 35 and is connected to the muffler 35.

如圖5所示,於側視車輛時,觸媒收容部42不與第1側底部外殼25重疊。因此,於側視車輛時,觸媒收容部42整體露出至外部。第1側底部外殼25之後部包含朝向前方凹陷之凹部251。於側視車輛時,觸媒收容部42配置於凹部251之後方。 As shown in FIG. 5, the catalyst accommodation portion 42 does not overlap the first side bottom casing 25 when the vehicle is viewed from the side. Therefore, when the vehicle is viewed from the side, the catalyst containing portion 42 is entirely exposed to the outside. The rear portion of the first side bottom outer casing 25 includes a concave portion 251 that is recessed toward the front. When the vehicle is viewed from the side, the catalyst storage portion 42 is disposed behind the concave portion 251.

觸媒收容部42之一部分位於連桿機構37之側方。因此,於側視車輛時,觸媒收容部42之一部分與連桿機構37重疊。 One of the catalyst containing portions 42 is located laterally of the link mechanism 37. Therefore, when the vehicle is viewed from the side, one portion of the catalyst containing portion 42 overlaps with the link mechanism 37.

觸媒收容部42於車輛前後方向上與前座部5a重疊。即,於側視車輛時,觸媒收容部42位於前座部5a之下方。觸媒收容部42較前座部5a之前端部位於更後方。觸媒收容部42較前座部5a之後端部位於更前方。觸媒收容部42位於引擎31之側方。詳細而言,觸媒收容部42位於曲軸箱311之側方。觸媒收容部42較冷卻風扇裝置33之旋轉中心C2位於更前方。觸媒收容部42較冷卻風扇裝置33之旋轉中心C2位於更下方。 The catalyst containing portion 42 overlaps the front seat portion 5a in the vehicle front-rear direction. That is, when the vehicle is viewed from the side, the catalyst containing portion 42 is located below the front seat portion 5a. The catalyst containing portion 42 is located further rearward than the front end portion of the front seat portion 5a. The catalyst containing portion 42 is located further forward than the rear end portion of the front seat portion 5a. The catalyst containing portion 42 is located on the side of the engine 31. Specifically, the catalyst containing portion 42 is located on the side of the crankcase 311. The catalyst containing portion 42 is located further forward than the rotation center C2 of the cooling fan device 33. The catalyst containing portion 42 is located below the rotation center C2 of the cooling fan device 33.

冷卻風扇裝置33與觸媒收容部42相對於沿車輛前後方向延伸之車輛之中心線C3配置於同一側。於本實施形態中,冷卻風扇裝置33與觸媒收容部42配置於沿車輛前後方向延伸之車輛之中心線C3之右 方。觸媒收容部42之一部分配置於冷卻風扇裝置33之下方。第2排氣管43係以通過冷卻風扇裝置33之下方之方式配置。於仰視車輛時,觸媒收容部42之一部分與第1後框架15重疊。觸媒收容部42之一部分較第1後框架15位於車寬方向上之更內側。觸媒收容部42之一部分較第1底部框架13位於車寬方向上之更內側。 The cooling fan device 33 and the catalyst containing portion 42 are disposed on the same side with respect to the center line C3 of the vehicle extending in the vehicle front-rear direction. In the present embodiment, the cooling fan device 33 and the catalyst containing portion 42 are disposed to the right of the center line C3 of the vehicle extending in the front-rear direction of the vehicle. square. One of the catalyst containing portions 42 is disposed below the cooling fan device 33. The second exhaust pipe 43 is disposed to pass below the cooling fan unit 33. When the vehicle is looked up, one of the catalyst containing portions 42 overlaps with the first rear frame 15. One of the catalyst containing portions 42 is located further inside the vehicle width direction than the first rear frame 15. One of the catalyst containing portions 42 is located further inside than the first bottom frame 13 in the vehicle width direction.

再者,於本實施形態中,所謂「車寬方向上之內側」,意指於車寬方向上,接近於通過車寬方向上之中心且沿前後方向延伸之中心線C3之方向。又,所謂「車寬方向上之外側」,意指於車寬方向上,與車寬方向上之內側相反之方向。即,所謂「車寬方向上之外側」,意指遠離通過車寬方向上之中心且沿前後方向延伸之中心線C3之方向。 In the present embodiment, the "inside of the vehicle width direction" means a direction in the vehicle width direction that is close to the center line C3 that extends in the front-rear direction through the center in the vehicle width direction. In addition, the "outer side in the vehicle width direction" means a direction opposite to the inner side in the vehicle width direction in the vehicle width direction. In other words, the term "outer side in the vehicle width direction" means a direction away from the center line C3 extending in the front-rear direction through the center in the vehicle width direction.

如圖4所示,於前視車輛時,第1排氣管41之一部分與燃料箱7重疊。於前視車輛時,第1傾斜部74之一部分與觸媒收容部42重疊。於前視車輛時,觸媒收容部42之內側部與燃料箱7重疊。於前視車輛時,觸媒收容部42位於第1底部框架13之下方。 As shown in FIG. 4, in the forward looking vehicle, one of the first exhaust pipes 41 overlaps the fuel tank 7. In the forward view vehicle, one of the first inclined portions 74 overlaps the catalyst containing portion 42. In the forward view vehicle, the inner portion of the catalyst containing portion 42 overlaps the fuel tank 7. In the case of the forward looking vehicle, the catalyst containing portion 42 is located below the first bottom frame 13.

再者,包含上述觸媒收容部42之引擎單元8之構成部分之位置只要成立於引擎單元8之搖動範圍之至少一部分中即可。例如,包含上述觸媒收容部42之引擎單元8之構成部分之位置表示騎士未乘坐於跨坐型車輛1,前輪4與後輪9接觸於水平面,跨坐型車輛1以直立狀態靜止之狀態的位置。 Further, the position of the component of the engine unit 8 including the catalyst containing unit 42 may be established in at least a part of the rocking range of the engine unit 8. For example, the position of the component of the engine unit 8 including the catalyst containing portion 42 indicates that the knight is not riding on the straddle-type vehicle 1, the front wheel 4 and the rear wheel 9 are in contact with the horizontal plane, and the straddle-type vehicle 1 is in an upright state. s position.

圖9係表示引擎單元8位於搖動範圍內最下方之位置之狀態的圖。圖10係表示引擎單元8位於搖動範圍內最上方之位置之狀態的圖。圖11係表示車體框架2與引擎單元8之一部分之前視圖。於圖11中,以實線表示引擎單元8位於搖動範圍內最下方之位置之狀態下之觸媒收容部42,以二點鏈線表示引擎單元8位於搖動範圍內最上方之位置之狀態下之觸媒收容部42。 Fig. 9 is a view showing a state in which the engine unit 8 is located at the lowest position in the rocking range. Fig. 10 is a view showing a state in which the engine unit 8 is located at the uppermost position in the rocking range. Figure 11 is a front elevational view showing a portion of the body frame 2 and the engine unit 8. In FIG. 11, the catalyst containing portion 42 in a state where the engine unit 8 is located at the lowest position in the rocking range is indicated by a solid line, and the two-point chain line indicates that the engine unit 8 is located at the uppermost position in the rocking range. The catalyst housing portion 42.

於引擎單元8位於搖動範圍內最下方之位置之狀態、及引擎單元8位於搖動範圍內最上方之位置之狀態中之任一狀態下,均較第1側底部外殼25之底部之後端位於更上方。因此,於引擎單元8位於搖動範圍內最下方之位置之狀態、及引擎單元8位於搖動範圍內最上方之位置之狀態中之任一狀態下,觸媒收容部42之一部分均配置於燃料箱7與第1側底部外殼25之間之空間之後方。即,於觸媒收容部42之整個搖動範圍內,觸媒收容部42之一部分配置於燃料箱7與第1側底部外殼25之間之空間之後方。 In any of the states in which the engine unit 8 is located at the lowest position in the rocking range and the state in which the engine unit 8 is located at the uppermost position in the rocking range, the bottom end of the bottom portion of the first side bottom casing 25 is located more Above. Therefore, in any of the states in which the engine unit 8 is located at the lowest position in the rocking range and the state in which the engine unit 8 is located at the uppermost position in the rocking range, one of the catalyst containing portions 42 is disposed in the fuel tank. 7 is behind the space between the first side bottom outer casing 25. That is, one of the catalyst containing portions 42 is disposed behind the space between the fuel tank 7 and the first side bottom casing 25 in the entire shaking range of the catalyst containing portion 42.

如圖9及圖11所示,於引擎單元8位於搖動範圍內最下方之位置之狀態下,觸媒收容部42之一部分較燃料箱7之底面位於更下方。如圖11所示,於引擎單元8位於搖動範圍內最下方之位置之狀態下,於前視車輛時,第1傾斜部74之一部分與第1排氣管41重疊。如圖10及圖11所示,於引擎單元8位於搖動範圍內最上方之位置之狀態下,觸媒收容部42之整體較燃料箱7之底面位於更上方。 As shown in FIGS. 9 and 11, in a state where the engine unit 8 is located at the lowest position in the rocking range, one portion of the catalyst containing portion 42 is located below the bottom surface of the fuel tank 7. As shown in FIG. 11, in a state where the engine unit 8 is located at the lowest position in the swing range, one of the first inclined portions 74 overlaps with the first exhaust pipe 41 in the forward view vehicle. As shown in FIGS. 10 and 11, in a state where the engine unit 8 is located at the uppermost position in the swing range, the entirety of the catalyst containing portion 42 is located above the bottom surface of the fuel tank 7.

於以上所說明之本實施形態之跨坐型車輛1中,藉由將觸媒36於排氣管34內儘可能地置於上游,而可加快引擎31起動後之觸媒36之溫度上升,從而可使觸媒36提前活化。又,於觸媒36活化之後,藉由車輛行駛,可利用通過燃料箱7與第1側底部外殼25之間之行駛風冷卻觸媒36。因此,藉由將觸媒36於排氣管34內儘可能地置於上游,而即便將觸媒36配置於前座部5a之正下方之位置,亦可減少熱對騎乘者之腳之影響。又,即便觸媒36接近於配置在平板腳踏板24之下方之燃料箱7,亦可減少熱對燃料箱7之影響。 In the straddle type vehicle 1 of the present embodiment described above, by bringing the catalyst 36 as far as possible upstream of the exhaust pipe 34, the temperature rise of the catalyst 36 after the engine 31 is started can be increased. Thereby, the catalyst 36 can be activated in advance. Further, after the activation of the catalyst 36, the vehicle 36 can be used to cool the catalyst 36 by the traveling wind between the fuel tank 7 and the first side bottom casing 25. Therefore, by placing the catalyst 36 as far as possible upstream in the exhaust pipe 34, even if the catalyst 36 is disposed directly below the front seat portion 5a, the influence of heat on the rider's foot can be reduced. . Further, even if the catalyst 36 is close to the fuel tank 7 disposed below the flat footboard 24, the influence of heat on the fuel tank 7 can be reduced.

於觸媒收容部42之整個搖動範圍內,觸媒收容部42之至少一部分配置於燃料箱7與第1側底部外殼25之間之空間之後方。因此,可使觸媒36始終位於行駛風經常吹到之位置。再者,於觸媒收容部42之搖動範圍之至少一部分中,只要將觸媒收容部42之至少一部分配置於燃 料箱7與第1側底部外殼25之間之空間之後方即可。 At least a part of the catalyst containing portion 42 is disposed behind the space between the fuel tank 7 and the first side bottom casing 25 in the entire rocking range of the catalyst containing portion 42. Therefore, the catalyst 36 can be always placed at a position where the traveling wind is often blown. Further, at least a part of the catalyst accommodating portion 42 is disposed in at least a part of the oscillating range of the catalyst accommodating portion 42. The space between the magazine 7 and the first side bottom outer casing 25 is sufficient.

於前視車輛時,觸媒收容部42之內側部與燃料箱7重疊。因此,與觸媒收容部42整體較燃料箱7配置於車寬方向上之更外側之情形相比,可將觸媒收容部42靠近車輛之中心線C3配置。藉此,可抑制對停車時著地之騎乘者之腳之熱影響。又,雖然行駛風難以到達至與燃料箱7重疊之觸媒收容部42之內側部,但由於觸媒收容部42被充分地冷卻,故而對燃料箱7之熱影響被抑制。尤其是觸媒收容部42之外側部被充分地冷卻,故而可抑制對騎手之腳之熱影響。 In the forward view vehicle, the inner portion of the catalyst containing portion 42 overlaps the fuel tank 7. Therefore, the catalyst containing portion 42 can be disposed closer to the center line C3 of the vehicle than when the fuel tank 7 is disposed outside the fuel tank 7 in the vehicle width direction. Thereby, the thermal influence of the rider's foot on the ground at the time of parking can be suppressed. Further, although it is difficult for the traveling wind to reach the inner portion of the catalyst containing portion 42 that overlaps the fuel tank 7, the catalyst containing portion 42 is sufficiently cooled, so that the heat influence on the fuel tank 7 is suppressed. In particular, since the outer side portion of the catalyst containing portion 42 is sufficiently cooled, the thermal influence on the rider's foot can be suppressed.

於前視車輛時,燃料箱7之第1傾斜部74之一部分與觸媒收容部42重疊。因此,藉由利用第1傾斜部74將行駛風引導至觸媒收容部42,可提高觸媒36之冷卻性能。 At the time of the forward-looking vehicle, one of the first inclined portions 74 of the fuel tank 7 overlaps with the catalyst containing portion 42. Therefore, by guiding the traveling wind to the catalyst containing portion 42 by the first inclined portion 74, the cooling performance of the catalyst 36 can be improved.

於前視車輛時,第1傾斜部74之一部分與第1排氣管41重疊。因此,藉由利用第1傾斜部74將行駛風引導至第1排氣管41,可進一步提高觸媒36之冷卻性能。 In the forward view vehicle, one of the first inclined portions 74 overlaps with the first exhaust pipe 41. Therefore, by guiding the traveling wind to the first exhaust pipe 41 by the first inclined portion 74, the cooling performance of the catalyst 36 can be further improved.

觸媒收容部42較冷卻風扇裝置33之旋轉中心C2位於更前方。因此,可利用由冷卻風扇裝置33產生之氣流冷卻觸媒36。藉此,可進一步提高觸媒36之冷卻性能。 The catalyst containing portion 42 is located further forward than the rotation center C2 of the cooling fan device 33. Therefore, the catalyst 36 can be cooled by the air flow generated by the cooling fan unit 33. Thereby, the cooling performance of the catalyst 36 can be further improved.

冷卻風扇裝置33與觸媒收容部42相對於沿車輛前後方向延伸之車輛之中心線C3配置於同一側。因此,可利用由冷卻風扇裝置33產生之氣流冷卻觸媒36。藉此,可進一步提高觸媒36之冷卻性能。 The cooling fan device 33 and the catalyst containing portion 42 are disposed on the same side with respect to the center line C3 of the vehicle extending in the vehicle front-rear direction. Therefore, the catalyst 36 can be cooled by the air flow generated by the cooling fan unit 33. Thereby, the cooling performance of the catalyst 36 can be further improved.

第1側底部外殼25延伸至較燃料箱7更靠後方之位置,但於側視車輛時,觸媒收容部42不與第1側底部外殼25重疊。因此,藉由使觸媒收容部42露出,可進一步提高觸媒36之冷卻性能。 The first side bottom outer casing 25 extends to a position further rearward than the fuel tank 7, but the catalyst storage portion 42 does not overlap the first side bottom outer casing 25 when the vehicle is viewed from the side. Therefore, by exposing the catalyst containing portion 42, the cooling performance of the catalyst 36 can be further improved.

觸媒收容部42之一部分位於連桿機構37之側方。因此,與將觸媒收容部42配置於連桿機構37之下方之情形相比,可將觸媒收容部42儘可能地配置於上游,並且可確保使最小離地間隙較大。 One of the catalyst containing portions 42 is located laterally of the link mechanism 37. Therefore, compared with the case where the catalyst accommodating portion 42 is disposed below the link mechanism 37, the catalyst accommodating portion 42 can be disposed as far as possible upstream, and the minimum ground clearance can be ensured to be large.

於引擎單元8位於搖動範圍內最下方之位置之狀態下,觸媒收容部42之一部分較燃料箱7之底面位於更下方。因此,行駛風容易到達至觸媒收容部42。藉此,可進一步提高觸媒36之冷卻能力。 In a state where the engine unit 8 is located at the lowest position in the swing range, one portion of the catalyst containing portion 42 is located below the bottom surface of the fuel tank 7. Therefore, the traveling wind easily reaches the catalyst containing portion 42. Thereby, the cooling ability of the catalyst 36 can be further improved.

於前視車輛時,觸媒收容部42之一部分位於第1底部框架13之下方。因此,藉由利用第1底部框架13將行駛風引導至觸媒收容部42,可進一步提高觸媒36之冷卻能力。 In the case of the forward looking vehicle, one of the catalyst containing portions 42 is located below the first bottom frame 13. Therefore, by guiding the traveling wind to the catalyst containing portion 42 by the first bottom frame 13, the cooling ability of the catalyst 36 can be further improved.

以上,對本發明之一實施形態進行了說明,但本發明並不限定於上述實施形態,可於不脫離發明之主旨之範圍內進行各種變更。 The embodiment of the present invention has been described above, but the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit and scope of the invention.

跨坐型車輛並不限定於機車,亦包含全地形車輛(ALL-TERRAIN VEHICLE)、雪上摩托車。 The straddle-type vehicle is not limited to a locomotive. It also includes an all-terrain vehicle (ALL-TERRAIN VEHICLE) and a snowmobile.

引擎31並不限定於空冷式,亦可為水冷式。於此情形時,冷卻風扇裝置33亦可代替強制空冷用風扇而為水冷用散熱器風扇。引擎31之汽缸軸線Ax1亦可水平地配置。亦可省略冷卻風扇裝置33。 The engine 31 is not limited to the air-cooling type, and may be water-cooled. In this case, the cooling fan unit 33 may be a water-cooling radiator fan instead of the forced air-cooling fan. The cylinder axis Ax1 of the engine 31 can also be configured horizontally. The cooling fan unit 33 can also be omitted.

於上述實施形態中,觸媒收容部42係較沿車輛前後方向延伸之跨坐型車輛1之中心線C3配置於更右方,但亦可較中心線C3配置於更左方。於此情形時,較佳為冷卻風扇裝置33及消音器35與觸媒收容部42同樣地亦較中心線C3配置於更左方。亦可將第1側底部外殼25及第2側底部外殼26與上述實施形態左右相反地配置。同樣地,亦可將第1底部框架13及第2底部框架14與上述實施形態左右相反地配置。 In the above embodiment, the catalyst accommodating portion 42 is disposed on the right side of the center line C3 of the straddle-type vehicle 1 extending in the longitudinal direction of the vehicle, but may be disposed on the left side from the center line C3. In this case, it is preferable that the cooling fan unit 33 and the muffler 35 are disposed on the left side of the center line C3 similarly to the catalyst containing unit 42. The first side bottom outer casing 25 and the second side bottom outer casing 26 may be arranged opposite to the above-described embodiments. Similarly, the first bottom frame 13 and the second bottom frame 14 may be arranged opposite to the above-described embodiments.

亦可並不限定於引擎單元8整體,而僅引擎單元8之一部分位於座部5之下方。於前視車輛時,亦可並不限定於第1排氣管41之一部分,而是第1排氣管41整體與燃料箱7重疊。亦可並不限定於觸媒收容部42之一部分,而是觸媒收容部42整體配置於燃料箱7與車體外殼6之間之空間之後方。 It is not limited to the entirety of the engine unit 8, and only one of the engine units 8 is located below the seat 5. In the case of the forward-looking vehicle, the entire first exhaust pipe 41 may be overlapped with the fuel tank 7 without being limited to one portion of the first exhaust pipe 41. The entire catalyst accommodation portion 42 may be disposed behind the space between the fuel tank 7 and the vehicle body casing 6 without being limited to one portion of the catalyst accommodation portion 42.

於前視車輛時,亦可並不限定於第1傾斜部74之一部分,而是第1傾斜部74整體與觸媒收容部42重疊。於前視車輛時,亦可並不限定 於第1傾斜部74之一部分,而是第1傾斜部74整體與第1排氣管41重疊。 In the case of the forward-looking vehicle, the entire first inclined portion 74 may be overlapped with the catalyst containing portion 42 without being limited to one portion of the first inclined portion 74. In the case of a forward-looking vehicle, it is not limited The entire first inclined portion 74 overlaps the first exhaust pipe 41 at a portion of the first inclined portion 74.

亦可並不限定於觸媒收容部42整體,而僅觸媒收容部42之一部分較冷卻風扇裝置33之旋轉中心C2位於更前方。即,亦可為觸媒收容部42之前端部較冷卻風扇裝置33之旋轉中心C2位於更前方,觸媒收容部42之後端部較冷卻風扇裝置33之旋轉中心C2位於更後方。 It is not limited to the entirety of the catalyst containing portion 42 , and only one portion of the catalyst containing portion 42 is located further forward than the rotation center C2 of the cooling fan device 33 . In other words, the front end portion of the catalyst containing portion 42 may be located further forward than the rotation center C2 of the cooling fan device 33, and the rear end portion of the catalyst containing portion 42 may be located further rearward than the rotation center C2 of the cooling fan device 33.

於側視車輛時,亦可並不限定於觸媒收容部42整體,而僅觸媒收容部42之一部分不與第1側底部外殼25重疊。即,亦可並不限定於觸媒收容部42整體,而僅觸媒收容部42之一部分於側視車輛時露出。亦可並不限定於觸媒收容部42之一部分,而是觸媒收容部42整體位於連桿機構37之側方。 When the vehicle is viewed from the side, it is not limited to the entirety of the catalyst containing portion 42 , and only one of the catalyst containing portions 42 does not overlap the first side bottom casing 25 . In other words, the entire catalyst storage unit 42 is not limited to the entire one, and only one of the catalyst storage portions 42 is exposed when the vehicle is viewed from the side. It is not limited to one portion of the catalyst containing portion 42 but the entire catalyst containing portion 42 is located on the side of the link mechanism 37.

於觸媒收容部42之整個搖動範圍內,亦可並不限定於觸媒收容部42之一部分,而是觸媒收容部42整體配置於燃料箱7與車體外殼6之間之空間之後方。於引擎單元8位於搖動範圍內最下方之位置之狀態下,亦可並不限定於觸媒收容部42之一部分,而是觸媒收容部42整體較燃料箱7之底面位於更下方。於前視車輛時,亦可並不限定於觸媒收容部42整體,而僅觸媒收容部42之一部分位於底部框架之下方。亦可僅於觸媒收容部42之搖動範圍之一部分,觸媒收容部42之至少一部分配置於燃料箱7與車體外殼6之間之空間之後方。 The entire oscillating range of the catalyst accommodating portion 42 is not limited to one portion of the catalyst accommodating portion 42, but the entire catalyst accommodating portion 42 is disposed behind the space between the fuel tank 7 and the vehicle body casing 6. . In a state in which the engine unit 8 is located at the lowest position in the rocking range, it is not limited to one portion of the catalyst containing portion 42, but the entire catalyst containing portion 42 is located below the bottom surface of the fuel tank 7. In the case of the forward-looking vehicle, the entire catalyst accommodation portion 42 is not limited thereto, and only one of the catalyst accommodation portions 42 is located below the bottom frame. At least a part of the catalyst accommodating portion 42 may be disposed behind the space between the fuel tank 7 and the vehicle body casing 6 only in a part of the oscillating range of the catalyst accommodating portion 42.

跨坐型車輛1亦可具備保護構件。例如,圖12A係表示第1變化例之跨坐型車輛之一部分之側視圖。圖12B係表示第1變化例之跨坐型車輛之一部分之仰視圖。如圖12A及圖12B所示,保護構件51配置於觸媒收容部42之下方。保護構件51係安裝於連桿機構37。於此情形時,可藉由保護構件51保護觸媒收容部42免受石頭等障礙物之傷害。 The straddle-type vehicle 1 may also be provided with a protective member. For example, FIG. 12A is a side view showing a part of the straddle type vehicle of the first modification. Fig. 12B is a bottom view showing a part of the straddle type vehicle of the first modification. As shown in FIGS. 12A and 12B, the protective member 51 is disposed below the catalyst containing portion 42. The protective member 51 is attached to the link mechanism 37. In this case, the catalyst containing portion 42 can be protected from an obstacle such as a stone by the protective member 51.

保護構件51亦可安裝於連桿機構37以外之構件。例如,圖13A係表示第2變化例之跨坐型車輛之一部分之側視圖。圖13B係表示第2變 化例之跨坐型車輛之一部分之仰視圖。如圖13A及圖13B所示,保護構件51係安裝於引擎31。詳細而言,保護構件51係安裝於曲軸箱311。 The protective member 51 may be attached to a member other than the link mechanism 37. For example, FIG. 13A is a side view showing a part of a straddle type vehicle of a second modification. Figure 13B shows the second change A bottom view of one of the straddle-type vehicles of the example. As shown in FIGS. 13A and 13B, the protective member 51 is attached to the engine 31. In detail, the protective member 51 is attached to the crankcase 311.

亦可於保護構件51與觸媒收容部42之間設置導風路徑。例如,如圖14所示,於保護構件51與觸媒收容部42之間設置導風路徑52、第1開口53、及第2開口54。第1開口53於導風路徑52之前方與外部之空間連通。第2開口54於導風路徑52之後方與外部之空間連通。因此,藉由行駛風自第1開口53通過導風路徑52並自第2開口54離去,可冷卻觸媒36。藉此,可進一步提高觸媒36之冷卻性能。 An air guiding path may be provided between the protective member 51 and the catalyst containing portion 42. For example, as shown in FIG. 14, the air guiding path 52, the first opening 53, and the second opening 54 are provided between the protective member 51 and the catalyst containing portion 42. The first opening 53 communicates with the external space in front of the air guiding path 52. The second opening 54 communicates with the external space behind the air guiding path 52. Therefore, the catalyst 36 can be cooled by the traveling wind passing through the air guiding path 52 from the first opening 53 and departing from the second opening 54. Thereby, the cooling performance of the catalyst 36 can be further improved.

引擎31亦可包含用以保護觸媒收容部42之肋條。例如,圖15A係表示第4變化例之跨坐型車輛之一部分之側視圖。圖15B係表示第4變化例之跨坐型車輛之一部分之仰視圖。如圖15A及圖15B所示,肋條55自引擎31延伸至較觸媒收容部42更靠下方之位置。肋條55係設置於曲軸箱311。肋條55於觸媒收容部42之側方沿觸媒收容部42向前後方向延伸。於此情形時,可藉由肋條55保護觸媒收容部42免受觸媒收容部42之下方之石頭等的傷害。 The engine 31 may also include ribs for protecting the catalyst containing portion 42. For example, Fig. 15A is a side view showing a part of a straddle type vehicle of a fourth modification. Fig. 15B is a bottom view showing a part of a straddle type vehicle of a fourth modification. As shown in FIGS. 15A and 15B, the rib 55 extends from the engine 31 to a position lower than the catalyst containing portion 42. The rib 55 is provided in the crankcase 311. The rib 55 extends in the front-rear direction of the catalyst containing portion 42 on the side of the catalyst containing portion 42. In this case, the catalyst accommodating portion 42 can be protected from the stones or the like below the catalyst accommodating portion 42 by the ribs 55.

引擎單元8亦可包含引擎用隔熱構件。例如,圖16A係表示第5變化例之跨坐型車輛之一部分之側視圖。圖16B係表示第5變化例之跨坐型車輛之一部分之仰視圖。如圖16A及圖16B所示,引擎用隔熱構件56配置於冷卻風扇裝置33與觸媒收容部42之間。引擎用隔熱構件56配置於觸媒收容部42之上方。引擎用隔熱構件56連接於冷卻風扇裝置33之風扇外殼45。於欲如此般提高冷卻風扇裝置33之冷卻能力之情形時,藉由設置引擎用隔熱構件56,可抑制觸媒36之熱傳導至冷卻風扇裝置33之冷卻風。 The engine unit 8 may also include a heat insulating member for the engine. For example, Fig. 16A is a side view showing a part of a straddle type vehicle of a fifth modification. Fig. 16B is a bottom view showing a part of the straddle type vehicle of the fifth modification. As shown in FIG. 16A and FIG. 16B, the engine heat insulating member 56 is disposed between the cooling fan device 33 and the catalyst containing portion 42. The engine heat insulating member 56 is disposed above the catalyst containing portion 42. The engine heat insulating member 56 is connected to the fan casing 45 of the cooling fan unit 33. When the cooling capacity of the cooling fan unit 33 is to be increased in this manner, by providing the heat insulating member 56 for the engine, the heat of the catalyst 36 can be suppressed from being transmitted to the cooling air of the cooling fan unit 33.

圖17係表示第6變化例之跨坐型車輛之一部分之仰視圖。如圖17所示,引擎用隔熱構件56亦可配置於引擎31與觸媒收容部42之間。引 擎用隔熱構件56配置於觸媒收容部42之側方。引擎用隔熱構件56於車寬方向上配置於曲軸箱311與觸媒收容部42之間。於引擎用隔熱構件56與觸媒收容部42之間設置有導風路徑52、第1開口53、及第2開口54。第1開口53於導風路徑52之前方與外部之空間連通。2開口於導風路徑52之後方與外部之空間連通。 Fig. 17 is a bottom plan view showing a part of a straddle type vehicle of a sixth modification. As shown in FIG. 17, the engine heat insulating member 56 may be disposed between the engine 31 and the catalyst containing portion 42. lead The heat insulating member 56 is disposed on the side of the catalyst containing portion 42. The engine heat insulating member 56 is disposed between the crankcase 311 and the catalyst containing portion 42 in the vehicle width direction. An air guiding path 52, a first opening 53, and a second opening 54 are provided between the engine heat insulating member 56 and the catalyst containing portion 42. The first opening 53 communicates with the external space in front of the air guiding path 52. 2 Opening behind the air guiding path 52 is in communication with the external space.

於此情形時,可藉由引擎用隔熱構件56抑制觸媒36之熱傳導至引擎31。又,藉由行駛風自第1開口53通過導風路徑52並自第2開口54離去,可冷卻觸媒36。藉此,可進一步提高觸媒36之冷卻性能。 In this case, heat transfer from the catalyst 36 to the engine 31 can be suppressed by the engine heat insulating member 56. Further, the traveling air 36 can be cooled by the traveling air passing through the air guiding path 52 from the first opening 53 and departing from the second opening 54. Thereby, the cooling performance of the catalyst 36 can be further improved.

跨坐型車輛亦可具備燃料箱用隔熱構件。燃料箱用隔熱構件配置於燃料箱7與觸媒收容部42之間。例如,圖18A係表示第7變化例之跨坐型車輛之一部分之側視圖。圖18B係表示第7變化例之跨坐型車輛之一部分之仰視圖。如圖18A及圖18B所示,燃料箱用隔熱構件57係安裝於第1連結框架17。燃料箱用隔熱構件57配置於燃料箱7之後方且觸媒收容部42之前方。於此情形時,可抑制觸媒36之熱傳導至燃料箱7。 The straddle type vehicle may also be provided with a heat insulating member for a fuel tank. The fuel tank heat insulating member is disposed between the fuel tank 7 and the catalyst containing portion 42. For example, Fig. 18A is a side view showing a part of a straddle type vehicle of a seventh modification. Fig. 18B is a bottom view showing a part of the straddle type vehicle of the seventh modification. As shown in FIGS. 18A and 18B, the fuel tank heat insulating member 57 is attached to the first connecting frame 17. The fuel tank heat insulating member 57 is disposed behind the fuel tank 7 and in front of the catalyst containing portion 42. In this case, heat transfer from the catalyst 36 to the fuel tank 7 can be suppressed.

燃料箱用隔熱構件57亦可安裝於第1連結框架17以外之部分。例如,圖19A係表示第8變化例之跨坐型車輛之一部分之側視圖。圖19B係表示第8變化例之跨坐型車輛之一部分之仰視圖。如圖19A及圖19B所示,燃料箱用隔熱構件57係安裝於連桿機構37。 The fuel tank heat insulating member 57 may be attached to a portion other than the first connecting frame 17 . For example, Fig. 19A is a side view showing a part of a straddle type vehicle of an eighth modification. Fig. 19B is a bottom view showing a part of the straddle type vehicle of the eighth modification. As shown in FIG. 19A and FIG. 19B, the fuel tank heat insulating member 57 is attached to the link mechanism 37.

跨坐型車輛亦可具備導風構件。例如,圖20A係表示第9變化例之跨坐型車輛之一部分之側視圖。圖20B係表示第9變化例之跨坐型車輛之一部分之仰視圖。如圖20A及圖20B所示,導風構件58配置於燃料箱7與觸媒收容部42之間,自燃料箱7之下方朝向觸媒收容部42引導行駛風。導風構件58係板狀之構件,且沿自燃料箱7之底部朝向觸媒收容部42之方向配置。導風構件58係安裝於第1連結框架17。於此情形時,藉由利用導風構件58將流經燃料箱7之下方之行駛風朝向觸 媒收容部42引導,可冷卻觸媒36。藉此,可進一步提高觸媒36之冷卻性能。再者,導風構件58亦可安裝於第1連結框架17以外之構件。例如,導風構件58亦可安裝於連桿機構37。 The straddle type vehicle may also have a wind guiding member. For example, Fig. 20A is a side view showing a part of a straddle type vehicle of a ninth modification. Fig. 20B is a bottom view showing a part of the straddle type vehicle of the ninth modification. As shown in FIGS. 20A and 20B, the air guiding member 58 is disposed between the fuel tank 7 and the catalyst containing portion 42, and guides the traveling wind from the lower side of the fuel tank 7 toward the catalyst containing portion 42. The wind guide member 58 is a plate-shaped member and is disposed in a direction from the bottom of the fuel tank 7 toward the catalyst containing portion 42. The wind guide member 58 is attached to the first joint frame 17. In this case, the traveling wind flowing under the fuel tank 7 is directed toward the touch by the wind guiding member 58. The medium accommodating portion 42 guides and cools the catalyst 36. Thereby, the cooling performance of the catalyst 36 can be further improved. Further, the air guiding member 58 may be attached to a member other than the first connecting frame 17. For example, the wind guide member 58 may be attached to the link mechanism 37.

觸媒收容部42之至少一部分亦可位於連桿機構37之後方。例如,圖21係表示第10變化例之跨坐型車輛之一部分之仰視圖。如圖21所示,觸媒收容部42之一部分亦可位於連桿機構37之後方。連桿機構37包含隔開配置於左右之第1連桿部37a及第2連桿部37b。於仰視車輛時,排氣埠314位於第1連桿部37a與第2連桿部37b之間。第1排氣管41通過第1連桿部37a與第2連桿部37b之間,且朝向後方彎曲。觸媒收容部42朝向後方延伸。觸媒收容部42位於曲軸箱311之下方。於此情形時,可與上述實施形態同樣地,將觸媒收容部42儘可能地配置於上游,並且可確保使最小離地間隙較大。再者,亦可並不限定於觸媒收容部42之一部分,而是觸媒收容部42整體位於連桿機構37之後方。 At least a portion of the catalyst containing portion 42 may be located behind the link mechanism 37. For example, Fig. 21 is a bottom view showing a part of a straddle type vehicle of a tenth modification. As shown in FIG. 21, a part of the catalyst containing portion 42 may be located behind the link mechanism 37. The link mechanism 37 includes a first link portion 37a and a second link portion 37b which are disposed to be spaced apart from each other. When looking up the vehicle, the exhaust port 314 is located between the first link portion 37a and the second link portion 37b. The first exhaust pipe 41 passes between the first link portion 37a and the second link portion 37b and is bent rearward. The catalyst containing portion 42 extends rearward. The catalyst containing portion 42 is located below the crankcase 311. In this case, as in the above-described embodiment, the catalyst containing portion 42 can be disposed as far as possible upstream, and the minimum ground clearance can be ensured to be large. Further, the catalyst accommodation portion 42 may not be limited to one portion of the catalyst storage portion 42 but the entire catalyst accommodation portion 42 may be located behind the link mechanism 37.

只要於車寬方向上觸媒收容部42之至少一部分位於燃料箱7與車體外殼6之間,則車體外殼6之形狀可為任何形狀。即,只要將通過燃料箱7與車體外殼6之間之風引導至觸媒收容部42,則車體外殼6之形狀可為任何形狀。 The shape of the body casing 6 may be any shape as long as at least a part of the catalyst containing portion 42 is located between the fuel tank 7 and the vehicle body casing 6 in the vehicle width direction. That is, as long as the wind passing between the fuel tank 7 and the vehicle body casing 6 is guided to the catalyst containing portion 42, the shape of the vehicle body casing 6 can be any shape.

於上述實施形態中,在底部外殼22之底面設置有第1開口61及第2開口62,在箱外殼69設置有第3~第5開口部63-65。然而,開口部亦可設置於其他部分。例如,圖22係表示第11變化例之跨坐型車輛100之一部分之仰視圖。如圖22所示,底部外殼22包含底面外殼29。底面外殼29自下方覆蓋燃料箱7。圖23係第11變化例之跨坐型車輛100之側視圖。如圖23所示,亦可於前外殼21之位於前輪4之後方之部分設置開口部281。或者,亦可於第1側底部外殼25設置開口部282。或者,亦可設置開口部281與開口部282之兩者。或者,開口部亦可為相互不同體之外殼之接合部分之間隙。再者,只要開口部之至少一部分較燃 料箱7之側部之後端處於更前方即可。 In the above embodiment, the first opening 61 and the second opening 62 are provided on the bottom surface of the bottom case 22, and the third to fifth opening portions 63-65 are provided in the case case 69. However, the opening portion may be provided in other portions. For example, FIG. 22 is a bottom view showing a part of the straddle type vehicle 100 of the eleventh modification. As shown in FIG. 22, the bottom outer casing 22 includes a bottom outer casing 29. The bottom case 29 covers the fuel tank 7 from below. 23 is a side view of the straddle type vehicle 100 of the eleventh modification. As shown in FIG. 23, the opening portion 281 may be provided in a portion of the front outer casing 21 that is located behind the front wheel 4. Alternatively, the opening portion 282 may be provided in the first side bottom case 25. Alternatively, both the opening 281 and the opening 282 may be provided. Alternatively, the opening portion may be a gap between the joint portions of the outer casings of different bodies. Furthermore, as long as at least a portion of the opening is relatively flammable The rear end of the side of the magazine 7 is located further forward.

於上述實施形態中,燃料箱7包含箱本體71及箱外殼79,但亦可省略箱外殼79。 In the above embodiment, the fuel tank 7 includes the tank body 71 and the tank casing 79, but the tank casing 79 may be omitted.

此處所使用之用語及表達係用於說明,而非用於限定性地解釋。必須認識到並不排除此處所表示且敍述之特徵事項之任何均等物,亦容許本發明所申請之範圍內之各種變化。本發明能以多種不同之形態具體化。本揭示應被視作提供本發明之原理之實施形態者。該等實施形態並非意欲將本發明限定於此處所記載且/或圖示之較佳之實施形態,基於該瞭解,於此處記載了實施形態。並不限定於此處所記載之實施形態。本發明亦包含可由業者基於本揭示而理解之包含均等之要素、修正、刪除、組合、改良及/或變更之所有實施形態。申請專利範圍之限定事項應基於該申請專利範圍中所使用之用語而廣義地解釋,不應限定於本說明書或本案之審批過程中所記載之實施形態。 The terms and expressions used herein are for the purpose of explanation and not for limitation. It is to be understood that the invention is not to be construed as a The invention can be embodied in a variety of different forms. The present disclosure should be considered as an embodiment of the principles of the invention. The embodiments are not intended to limit the invention to the preferred embodiments described herein and/or illustrated, and the embodiments are described herein. It is not limited to the embodiment described herein. The invention also includes all embodiments that include equivalent elements, modifications, deletions, combinations, improvements, and/or changes, which are understood by those skilled in the art. The limitation of the scope of application for patent application shall be interpreted broadly based on the terms used in the scope of the patent application, and shall not be limited to the embodiments described in the specification or the approval process of the present invention.

2‧‧‧車體框架 2‧‧‧ body frame

7‧‧‧燃料箱 7‧‧‧fuel tank

8‧‧‧引擎單元 8‧‧‧ engine unit

13‧‧‧第1底部框架 13‧‧‧1st bottom frame

14‧‧‧第2底部框架 14‧‧‧2nd bottom frame

15‧‧‧第1後框架 15‧‧‧1st back frame

16‧‧‧第2後框架 16‧‧‧2nd rear frame

17‧‧‧第1連結框架 17‧‧‧1st link frame

25‧‧‧第1側底部外殼 25‧‧‧1st bottom bottom shell

26‧‧‧第2側底部外殼 26‧‧‧2nd bottom bottom shell

31‧‧‧引擎 31‧‧‧ Engine

32‧‧‧變速箱 32‧‧‧Transmission

33‧‧‧冷卻風扇裝置 33‧‧‧Cooling fan unit

34‧‧‧排氣管 34‧‧‧Exhaust pipe

35‧‧‧消音器 35‧‧‧Muffler

36‧‧‧觸媒 36‧‧‧ catalyst

37‧‧‧連桿機構 37‧‧‧ linkage mechanism

41‧‧‧第1排氣管 41‧‧‧1st exhaust pipe

42‧‧‧觸媒收容部 42‧‧‧ Catalyst Containment Department

43‧‧‧第2排氣管 43‧‧‧2nd exhaust pipe

63‧‧‧第3開口部 63‧‧‧3rd opening

64‧‧‧第4開口部 64‧‧‧4th opening

65‧‧‧第5開口部 65‧‧‧5th opening

71‧‧‧箱本體 71‧‧‧ box body

72‧‧‧第1外殼安裝部 72‧‧‧1st outer casing installation

73‧‧‧第2外殼安裝部 73‧‧‧2nd outer casing installation

74‧‧‧第1傾斜部 74‧‧‧1st inclined part

75‧‧‧第2傾斜部 75‧‧‧2nd inclined part

77‧‧‧第1箱安裝部 77‧‧‧1st box installation

78‧‧‧第2箱安裝部 78‧‧‧Second box installation department

79‧‧‧箱外殼 79‧‧‧ box enclosure

311‧‧‧曲軸箱 311‧‧‧ crankcase

313‧‧‧曲柄軸 313‧‧‧ crankshaft

452‧‧‧排氣管外殼部 452‧‧‧Exhaust pipe outer casing

A1‧‧‧箭頭 A1‧‧‧ arrow

A2‧‧‧箭頭 A2‧‧‧ arrow

C3‧‧‧中心線 C3‧‧‧ center line

Claims (22)

一種跨坐型車輛,其包括:車體框架;座部,其支持於上述車體框架;平板腳踏板,其較上述座部配置於更下方且更前方;燃料箱,其配置於上述平板腳踏板之下方;車體外殼,其配置於上述燃料箱之側方;開口部,其將行駛風導入至上述燃料箱與上述車體外殼之間;及引擎單元,其配置於上述平板腳踏板及上述燃料箱之後方,可搖動地支持於上述車體框架;且上述引擎單元之至少一部分位於上述座部之下方;上述引擎單元包含:引擎,其具有排氣埠;排氣管,其連接於上述排氣埠;消音器,其連接於上述排氣管;及觸媒,其配置於上述排氣管內;上述排氣管包含:第1排氣管,其位於上述觸媒之上游,且連接於上述排氣埠;觸媒收容部,其連接於上述第1排氣管,向後方延伸,且收容上述觸媒;及第2排氣管,其位於上述觸媒之下游,連接於上述觸媒收容部,向後方延伸並連接於上述消音器;於前視車輛時,上述第1排氣管之至少一部分與上述燃料箱重 疊;上述觸媒收容部之至少一部分配置於上述燃料箱與上述車體外殼之間之空間之後方。 A straddle-type vehicle includes: a vehicle body frame; a seat portion supported by the vehicle body frame; a flat foot pedal disposed further below and further forward than the seat portion; and a fuel tank disposed on the flat plate a vehicle body casing disposed on a side of the fuel tank; an opening portion for introducing a traveling wind between the fuel tank and the vehicle body casing; and an engine unit disposed on the plate foot a pedal and a rear of the fuel tank are rotatably supported by the vehicle body frame; and at least a portion of the engine unit is located below the seat portion; the engine unit includes: an engine having an exhaust port; an exhaust pipe; And the muffler is connected to the exhaust pipe; and the catalyst is disposed in the exhaust pipe; the exhaust pipe includes: a first exhaust pipe located at the catalyst Upstream, and connected to the exhaust enthalpy; the catalyst accommodating portion is connected to the first exhaust pipe and extends rearward to accommodate the catalyst; and the second exhaust pipe is located downstream of the catalyst Connected to the above touch Receiving portion is connected to the extending rearward muffler; when the vehicle in front view, the first exhaust pipe and at least a portion of the weight of the fuel tank At least a part of the catalyst containing portion is disposed behind a space between the fuel tank and the vehicle body casing. 如請求項1之跨坐型車輛,其中上述引擎之汽缸軸線配置於與鉛垂方向交叉之方向,上述引擎單元之搖動中心及上述觸媒收容部較上述汽缸軸線位於更下方,於上述觸媒收容部之整個搖動範圍內,上述觸媒收容部之至少一部分配置於上述燃料箱與上述車體外殼之間之空間之後方。 The straddle-type vehicle according to claim 1, wherein the cylinder axis of the engine is disposed in a direction crossing the vertical direction, and the rocking center of the engine unit and the catalyst containing portion are located below the cylinder axis, and the catalyst is At least a part of the catalyst containing portion is disposed behind the space between the fuel tank and the vehicle body casing in the entire rocking range of the accommodating portion. 如請求項1之跨坐型車輛,其中上述座部包含用以供騎乘者乘坐之前座部,上述觸媒收容部於車輛前後方向上與上述前座部重疊,上述觸媒收容部之至少一部分於側視車輛時露出,於前視車輛時,上述觸媒收容部之內側部與上述燃料箱重疊。 The straddle-type vehicle of claim 1, wherein the seat portion includes a seat portion for the rider to ride, the catalyst accommodation portion overlaps with the front seat portion in a front-rear direction of the vehicle, and at least a portion of the catalyst receiving portion When the vehicle is viewed from the side, the inner portion of the catalyst containing portion overlaps with the fuel tank when the vehicle is viewed in the forward direction. 如請求項1之跨坐型車輛,其中上述燃料箱包含傾斜部,該傾斜部於前視車輛時朝向上方且外側方傾斜,於前視車輛時,上述傾斜部之至少一部分與上述觸媒收容部重疊。 The straddle-type vehicle according to claim 1, wherein the fuel tank includes an inclined portion that is inclined upward and outward when the front view vehicle is present, and at least a part of the inclined portion and the catalyst containment when the vehicle is a front view The departments overlap. 如請求項4之跨坐型車輛,其中於前視車輛時,上述傾斜部之至少一部分與上述第1排氣管重疊。 A straddle-type vehicle according to claim 4, wherein, in the forward-looking vehicle, at least a part of the inclined portion overlaps with the first exhaust pipe. 如請求項1之跨坐型車輛,其中上述引擎單元進而包含冷卻風扇裝置, 上述觸媒收容部之至少一部分較上述冷卻風扇裝置之旋轉中心位於更前方。 The straddle type vehicle of claim 1, wherein the engine unit further includes a cooling fan device, At least a portion of the catalyst containing portion is located further forward than a center of rotation of the cooling fan device. 如請求項1之跨坐型車輛,其中上述引擎單元進而包含冷卻風扇裝置,上述冷卻風扇裝置與上述觸媒收容部相對於沿車輛前後方向延伸之車輛之中心線配置於同一側。 The straddle-type vehicle according to claim 1, wherein the engine unit further includes a cooling fan device, and the cooling fan device and the catalyst containing portion are disposed on the same side with respect to a center line of a vehicle extending in a front-rear direction of the vehicle. 如請求項1之跨坐型車輛,其中上述車體外殼延伸至較上述燃料箱更靠後方之位置,於側視車輛時,上述觸媒收容部之至少一部分不與上述車體外殼重疊。 The straddle-type vehicle of claim 1, wherein the body casing extends to a position further rearward than the fuel tank, and at least a portion of the catalyst accommodating portion does not overlap with the vehicle body casing when the vehicle is viewed from the side. 如請求項1之跨坐型車輛,其進而包括將上述引擎單元與上述車體框架連接之連桿機構,上述觸媒收容部之至少一部分位於上述連桿機構之側方。 A straddle-type vehicle according to claim 1, further comprising a link mechanism that connects the engine unit to the vehicle body frame, at least a part of the catalyst accommodation portion being located lateral to the link mechanism. 如請求項1之跨坐型車輛,其進而包括將上述引擎單元與上述車體框架連接之連桿機構,上述觸媒收容部之至少一部分於仰視車輛時位於上述連桿機構之後方。 The straddle-type vehicle according to claim 1, further comprising a link mechanism that connects the engine unit to the vehicle body frame, wherein at least a part of the catalyst storage portion is located behind the link mechanism when looking up the vehicle. 如請求項1之跨坐型車輛,其進而包括配置於上述觸媒收容部之下方之保護構件。 The straddle-type vehicle of claim 1, further comprising a protective member disposed below the catalyst containing portion. 如請求項11之跨坐型車輛,其進而包括將上述引擎單元與上述車體框架連接之連桿機構,上述保護構件係安裝於上述連桿機構。 A straddle-type vehicle according to claim 11, further comprising: a link mechanism that connects the engine unit to the vehicle body frame, wherein the protection member is attached to the link mechanism. 如請求項11之跨坐型車輛,其中上述保護構件係安裝於上述引擎。 A straddle-type vehicle according to claim 11, wherein said protective member is attached to said engine. 如請求項11之跨坐型車輛,其中於上述保護構件與上述觸媒收容部之間設置有:導風路徑; 第1開口,其於上述導風路徑之前方與外部之空間連通;及第2開口,其於上述導風路徑之後方與外部之空間連通。 The straddle-type vehicle of claim 11, wherein an air guiding path is disposed between the protective member and the catalyst receiving portion; The first opening communicates with the external space before the air guiding path; and the second opening communicates with the external space behind the air guiding path. 如請求項1之跨坐型車輛,其中上述引擎包含延伸至較上述觸媒收容部更靠下方之位置之肋條。 A straddle-type vehicle according to claim 1, wherein said engine includes a rib extending to a position lower than said catalyst containing portion. 如請求項1之跨坐型車輛,其中上述引擎單元進而包含:冷卻風扇裝置,其配置於上述引擎之側方;及引擎用隔熱構件,其配置於上述冷卻風扇裝置與上述觸媒收容部之間。 The straddle-type vehicle according to claim 1, wherein the engine unit further includes: a cooling fan device disposed on a side of the engine; and an engine heat insulating member disposed in the cooling fan device and the catalyst housing portion between. 如請求項1之跨坐型車輛,其中上述引擎單元進而包含配置於上述引擎與上述觸媒收容部之間之引擎用隔熱構件。 The straddle-type vehicle according to claim 1, wherein the engine unit further includes an engine heat insulating member disposed between the engine and the catalyst containing portion. 如請求項16之跨坐型車輛,其中於上述引擎用隔熱構件與上述觸媒收容部之間設置有:導風路徑;第1開口,其於上述導風路徑之前方與外部之空間連通;及第2開口,其於上述導風路徑之後方與外部之空間連通。 The straddle-type vehicle according to claim 16, wherein the engine heat insulating member and the catalyst containing portion are provided with: an air guiding path; and a first opening that communicates with an external space before the air guiding path And a second opening that communicates with the external space behind the air guiding path. 如請求項1之跨坐型車輛,其進而包括配置於上述燃料箱與上述觸媒收容部之間之燃料箱用隔熱構件。 The straddle-type vehicle according to claim 1, further comprising a heat insulating member for a fuel tank disposed between the fuel tank and the catalyst containing portion. 如請求項1之跨坐型車輛,其進而包括導風構件,該導風構件配置於上述燃料箱與上述觸媒收容部之間,將行駛風自上述燃料箱之下方朝向上述觸媒收容部引導。 The straddle-type vehicle according to claim 1, further comprising a wind guide member disposed between the fuel tank and the catalyst accommodating portion, and driving wind from a lower side of the fuel tank toward the catalyst accommodating portion guide. 如請求項1之跨坐型車輛,其中於上述引擎單元位於搖動範圍內最下方之位置之狀態下,上述觸媒收容部之至少一部分較上述燃料箱之底面位於更下方。 The straddle-type vehicle according to claim 1, wherein at least a part of the catalyst containing portion is located below the bottom surface of the fuel tank in a state where the engine unit is located at a lowest position in the rocking range. 如請求項1至21中任一項之跨坐型車輛,其中上述車體框架包含通過上述平板腳踏板之下方且朝向後方延伸之底部框架,於前視車輛時,上述觸媒收容部之至少一部分位於上述底部框架之下方。 The straddle-type vehicle according to any one of claims 1 to 21, wherein the vehicle body frame includes a bottom frame extending downward and rearward through the flat footboard, and in the front view vehicle, the catalyst receiving portion At least a portion is located below the bottom frame.
TW103142481A 2013-12-13 2014-12-05 Saddle-riding vehicle TWI572511B (en)

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JP2013258321A JP2015113074A (en) 2013-12-13 2013-12-13 Saddle-riding type vehicle
EP14191468.9A EP3015350B1 (en) 2014-11-03 2014-11-03 Saddle-riding vehicle

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Citations (4)

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EP2557290A1 (en) * 2011-08-09 2013-02-13 Suzuki Motor Corporation Exhaust pipe structure of internal combustion engine
TWI417214B (en) * 2008-08-01 2013-12-01 Yamaha Motor Co Ltd Scooter type vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW523476B (en) * 2001-01-16 2003-03-11 Honda Motor Co Ltd Fuel device for scooter type vehicle
TWI239909B (en) * 2004-12-13 2005-09-21 Kwang Yang Motor Co Modular radiator for a motorbike
TWI417214B (en) * 2008-08-01 2013-12-01 Yamaha Motor Co Ltd Scooter type vehicle
EP2557290A1 (en) * 2011-08-09 2013-02-13 Suzuki Motor Corporation Exhaust pipe structure of internal combustion engine

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