ENGINE UNIT AND RIDE TYPE VEHICLE
PROBLEM TO BE SOLVED: To provide an engine unit including an exhaust device which simplifies its configuration while promoting the activation of a catalyst, and to provide a ride type vehicle.SOLUTION: A main catalyst having the highest emission control ability in an exhaust passage is arranged of w...
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Format | Patent |
Language | English Japanese |
Published |
31.08.2017
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Abstract | PROBLEM TO BE SOLVED: To provide an engine unit including an exhaust device which simplifies its configuration while promoting the activation of a catalyst, and to provide a ride type vehicle.SOLUTION: A main catalyst having the highest emission control ability in an exhaust passage is arranged of which a virtual straight line f2 connecting the upstream end center of the main catalyst and the downstream end center and a virtual straight line f1 connecting the center of an exhaust port 26H of a single-cylinder four-stroke engine and the center of a joint part 34a between an exhaust pipe and a noise eliminator are both inclined in view from a direction perpendicular to a cylinder axial line L1 and perpendicular to a crank axial line L2 so that sites are located in one direction perpendicular to the cylinder axial line in proportion as located in one direction parallel to the cylinder axial line, and which at least partly overlaps with a quadrilateral (S1-S4) defined by the cylinder axial line L1, the crank axial line L2, the exhaust port 26H and the joint part 34a, in view from the vertical direction.SELECTED DRAWING: Figure 4
【課題】触媒の活性化を促進しつつ、構造がシンプルな排気装置を有するエンジンユニット及び鞍乗型車両を提供する。【解決手段】排気通路内で最も浄化能力の高いメイン触媒が、シリンダ軸線L1と垂直且つクランク軸L2と垂直の方向に見て、メイン触媒の上流端中央と下流端中央とを結ぶ仮想直線f2と、単気筒4ストロークエンジンの排気口26Hの中央と、排気管と消音器との接合部34aの中央とを結ぶ仮想直線f1との両方が、前記シリンダ軸線に平行な一つの方向に位置する部位ほど、前記シリンダ軸線に垂直な一つの方向に位置するように傾斜して配置され、且つ、鉛直方向に見て、シリンダ軸線L1、クランク軸線L2、排気口26H、接合部34aにより規定される四辺形(S1〜S4)と、少なくとも一部が重なるように配置されている。【選択図】図4 |
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AbstractList | PROBLEM TO BE SOLVED: To provide an engine unit including an exhaust device which simplifies its configuration while promoting the activation of a catalyst, and to provide a ride type vehicle.SOLUTION: A main catalyst having the highest emission control ability in an exhaust passage is arranged of which a virtual straight line f2 connecting the upstream end center of the main catalyst and the downstream end center and a virtual straight line f1 connecting the center of an exhaust port 26H of a single-cylinder four-stroke engine and the center of a joint part 34a between an exhaust pipe and a noise eliminator are both inclined in view from a direction perpendicular to a cylinder axial line L1 and perpendicular to a crank axial line L2 so that sites are located in one direction perpendicular to the cylinder axial line in proportion as located in one direction parallel to the cylinder axial line, and which at least partly overlaps with a quadrilateral (S1-S4) defined by the cylinder axial line L1, the crank axial line L2, the exhaust port 26H and the joint part 34a, in view from the vertical direction.SELECTED DRAWING: Figure 4
【課題】触媒の活性化を促進しつつ、構造がシンプルな排気装置を有するエンジンユニット及び鞍乗型車両を提供する。【解決手段】排気通路内で最も浄化能力の高いメイン触媒が、シリンダ軸線L1と垂直且つクランク軸L2と垂直の方向に見て、メイン触媒の上流端中央と下流端中央とを結ぶ仮想直線f2と、単気筒4ストロークエンジンの排気口26Hの中央と、排気管と消音器との接合部34aの中央とを結ぶ仮想直線f1との両方が、前記シリンダ軸線に平行な一つの方向に位置する部位ほど、前記シリンダ軸線に垂直な一つの方向に位置するように傾斜して配置され、且つ、鉛直方向に見て、シリンダ軸線L1、クランク軸線L2、排気口26H、接合部34aにより規定される四辺形(S1〜S4)と、少なくとも一部が重なるように配置されている。【選択図】図4 |
Author | WAKIMURA MAKOTO ARAKI YUJI NISHIGAKI MASATAKA ISHIZAWA KAZUHIRO |
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DocumentTitleAlternate | エンジンユニット及び鞍乗型車両 |
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RelatedCompanies | YAMAHA MOTOR CO LTD |
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Snippet | PROBLEM TO BE SOLVED: To provide an engine unit including an exhaust device which simplifies its configuration while promoting the activation of a catalyst,... |
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SubjectTerms | BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS |
Title | ENGINE UNIT AND RIDE TYPE VEHICLE |
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