EP1055808B1 - Moto ayant un détecteur de gaz d'échappement - Google Patents

Moto ayant un détecteur de gaz d'échappement Download PDF

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Publication number
EP1055808B1
EP1055808B1 EP20000108192 EP00108192A EP1055808B1 EP 1055808 B1 EP1055808 B1 EP 1055808B1 EP 20000108192 EP20000108192 EP 20000108192 EP 00108192 A EP00108192 A EP 00108192A EP 1055808 B1 EP1055808 B1 EP 1055808B1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas sensor
motorcycle
cylinder block
exhaust pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20000108192
Other languages
German (de)
English (en)
Other versions
EP1055808A3 (fr
EP1055808A2 (fr
Inventor
Shunji K.K. Honda Gijutsu Kenkyusho Akamatsu
Satoshi K.K. Honda Gijutsu Kenkyusho Iijima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1055808A2 publication Critical patent/EP1055808A2/fr
Publication of EP1055808A3 publication Critical patent/EP1055808A3/fr
Application granted granted Critical
Publication of EP1055808B1 publication Critical patent/EP1055808B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen

Definitions

  • the present invention relates to a superior position for fitting an exhaust gas sensor, for sensing concentration etc. of O 2 discharged from an engine mounted on a motorcycle, to an exhaust pipe.
  • the motorcycles disclosed in the above publication are large-type motorcycles with exhaust gas sensors fitted at an exhaust pipe at the bottom of a rear part of an engine body, and maintenance after the exhaust gas sensor is fitted to the exhaust pipe is therefore difficult. Further, it is necessary to provide a protective cover for protecting the exhaust gas sensor from stones and water scattered in accompaniment with the travel of the motorcycle because there is nothing located at the lower part of the exhaust gas sensor.
  • Such exhaust gas sensors are not just applied to large-type motorcycles, but are also widely adopted in small-type utility cycles.
  • the exhaust gas sensors require substantially the same dedicated space regardless of whether the motorcycle is a large-type motorcycle or a small-type motorcycle.
  • an exhaust gas sensor is arranged at the same position as for the large-type vehicle of the aforementioned publication, it is difficult to maintain clearance with other parts of the engine body etc. and the degree of freedom in arranging other parts is constricted.
  • EP 0 785 343 A1 discloses a motorcycle exhaust gas assembly according to the preamble of claim 1. There, the exhaust gas sensor is located behind the crank case projection or in front of the crank case. In EP 500 105 A1, an exhaust gas sensor is located beneath the engine of a motorcycle.
  • the exhaust gas sensor is fitted to the exhaust pipe so as to project further to the side than the right side surface of the cylinder block and further forward than a right projection with which the crank case is equipped and to the right side of the cylinder block.
  • the exhaust gas sensor can therefore be positioned so as to use the available space effectively without the engine body and the exhaust gas sensor interfering with each other so that this exhaust gas sensor can be easily adopted for small motorcycles without restrictions being placed on the degree of freedom of arranging other parts.
  • maintenance of the exhaust gas sensor can easily be carried out from above because the exhaust gas sensor is fitted to the upper side wall of the exhaust pipe, and stones and water scattered up from below are prevented from colliding with the exhaust gas sensor by the exhaust pipe itself because the exhaust pipe is positioned lower than the exhaust gas sensor.
  • collisions and water bursts due to stones from the inside can be effectively prevented because the cylinder block is arranged inside of the exhaust gas sensor and collisions and water bursts due to flying stones can be prevented as much as possible without a protective cover being necessary.
  • an exhaust gas sensor is located in a manner that effectively utilizes available space without an engine body and an exhaust gas sensor interfering with each other.
  • this exhaust gas sensor can easily be adopted in small-type motorcycles. Maintenance of an exhaust gas sensor can therefore easily be carried out from above and collisions and water bursts due to scattered stones can be prevented to as great an extent as possible without it being necessary to provide a protective cover.
  • a backbone-type motorcycle vehicle frame F comprises a steel pipe backbone 5 inclined downwards and to the rear, and steel plate rear frame 6 welded to the rear end of the backbone 5, with a front fork 8 axially supporting a from wheel WF being pivoted in a steerable manner at a head pipe 7 provided at the front end of the backbone 5 and a steering handle 9 being coupled to the upper end of the front fork 8.
  • a rear fork 10 axially supporting a rear wheel WR is then pivotally supported at the rear frame 6, with a rear cushion 11 being provided between the rear fork 10 and the rear frame 6.
  • a saddle 12 is fitted at the upper surface of the rear frame 6, with a fuel tank 13 being housed and supported within the rear frame 6 directly below the saddle 12.
  • a crank case 14 of the engine E is then fitted at the lower part of a part coupling with the backbone 5 at the front end of the rear frame 6.
  • the crank case 14 is constituted by the cylinder block 15, cylinder head 16 and engine body 17.
  • the cylinder block 15 is arranged along a direction from the front to the rear of the vehicle frame F within a perpendicular plane so as to be substantially horizontal to the axis of a cylinder 18 so as to project forwards in a substantially horizontal manner from the front surface of the crank case 14.
  • the cylinder head 16 is then coupled at the front surface of the cylinder block 15 on the opposite side to the crank case 14.
  • An air cleaner 19 is fitted to the front end of the backbone 5.
  • a downstream end of a horn pipe 20, the upstream end of which penetrates to the inside of an air cleaner 19, and the upstream end of an intake pipe 22, the downstream end of which is connected to an intake port 23 provided at the upper end of a cylinder head 16, are connected via a throttle body 21.
  • a fuel injection valve 24 for injecting fuel into the intake port 23 is fitted at the central part of the intake pipe 22.
  • the upstream end of an exhaust pipe 26 is connected to an exhaust port 25 provided at the lower part of the cylinder head 16, and the downstream end of the exhaust pipe 26 is connected to an exhaust pipe 27 positioned at the rear right side of the vehicle frame F.
  • the backbone 5, cylinder block 15, cylinder head 16, air cleaner 19, horn pipe 20, throttle body 21 and intake pipe 22 are covered by a leg shield 28 fitted to the vehicle frame F.
  • An opening 28a facing the throttle body 21, intake pipe 22, and part of the fuel injection valve 24 is provided at the leg shield 28.
  • the crank case 14 has a right projection 14a projecting further to the side than the right side surface 15a in a direction from left to right of the cylinder block 15.
  • the exhaust pipe 26 connected to the exhaust port 25 of the cylinder head 16 then extends downwards and to the right from the exhaust port 25 in a direction from left to right of the motorcycle and then extends to the rear so as to pass through the lower part of the right projection 14a on the outer side from the right side surface 15a.
  • an O 2 sensor 29 that is an exhaust gas sensor is fitted at the exhaust pipe 26.
  • This O 2 sensor 29 is fitted to the exhaust pipe 26 in such a manner as to extend upwards from the upper side wall of the exhaust pipe 26 at a position further towards the front than the right projection 14a of the crank case 14 at a position out from the right side surface 15a of the cylinder block 15.
  • the O 2 sensor 29 By fitting the O 2 sensor 29 to the exhaust pipe 26 in such a manner as to project further to the side than the right side surface 15a of the cylinder block 15, be further forward than the right projection 14a with which the crank case 14 is equipped, and be on the right side of the cylinder block 15, the O 2 sensor 29 can be located so as to effectively utilize vacant space without the engine body 17 and the O 2 sensor 29 interfering, no restrictions are placed on the degree of freedom with which other parts can be located, and this O 2 sensor 29 can also be easily adopted for small-type motorcycles.
  • the exhaust pipe 26 is positioned down from the O 2 sensor 29 and stones and water scattered from below are therefore prevented from colliding with the O 2 sensor 29 by the exhaust pipe 26 itself. Collisions and water bursts due to stones from the inner side can therefore be effectively prevented because the cylinder block 15 is located inside of the O 2 sensor 29 and can therefore be prevented to as great an extent as possible, without it being necessary to provide a protective cover. In this embodiment, collisions and water bursts of stones with the O 2 sensor 29 from the front side in particular can be effectively prevented because the leg shield 28 is located at the front side of the exhaust pipe 26.
  • the present invention can also be applied to the case where the axis of the cylinder 18 is arranged in a substantially perpendicular manner within a perpendicular plane running in a direction from the front to the rear of the vehicle frame F.
  • the present invention can also be applied to motorcycles employing an LAF sensor as an exhaust gas sensor in place of the O 2 sensor.
  • the invention positions an exhaust gas sensor in such a manner that a protective cover is not required, collisions and water bursts due to flying stones are avoided as much as possible, where maintenance work is straightforward, and where available space is effectively utilized.
  • an exhaust gas sensor 29 is fitted to an upper side wall of an exhaust pipe 26 at a position forward from a right projection 14a of a crank case 14 and facing out from a right side surface 15a of a cylinder block 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Silencers (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Claims (1)

  1. Motocycle dont le sens de marche définit un avant, le motocycle comprenant un cadre de véhicule (F) et un moteur monté sur le cadre de véhicule (F), dans lequel le moteur (E) est équipé d'un bloc-cylindres (15) placé sur un axe d'un cylindre (18) dans un plan perpendiculaire s'étendant de l'avant vers l'arrière du cadre de véhicule (F), un carter-moteur (14) couplé au bloc-cylindres (15) et ayant une saillie droite (14a) dépassant davantage vers le côté droit du cadre de véhicule (F) qu'une surface latérale droite (15a) dans une direction allant de gauche à droite du bloc-cylindres (15), et une culasse (16) couplée au bloc-cylindres (15) sur le côté opposé au carter-moteur (14), dans lequel un tube d'échappement (26) s'étend vers le bas depuis un orifice d'échappement (25) prévu sur la culasse (16) et de l'avant vers l'arrière le long de la partie inférieure de la saillie droite (14a) et est équipé d'un détecteur de gaz d'échappement (29),
       caractérisée en ce que le tube d'échappement (26) s'étend vers le bas et vers la droite depuis l'orifice d'échappement (25) dans une direction allant de gauche à droite du motocycle, puis s'étend vers l'arrière sous la partie inférieure de la saillie droite (14a), et
       en ce que le détecteur de gaz d'échappement (29) est monté sur le tube d'échappement (26) de manière à s'étendre vers le haut depuis une paroi supérieure de la partie du tube d'échappement (26) qui s'étend de l'avant vers l'arrière et dans une position vers l'avant par rapport à la saillie droite (14a) du carter-moteur (14) et orientée vers l'extérieur à partir de la surface latérale droite (15a) du bloc-cylindres (15).
EP20000108192 1999-05-28 2000-04-13 Moto ayant un détecteur de gaz d'échappement Expired - Lifetime EP1055808B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14978999A JP4145423B2 (ja) 1999-05-28 1999-05-28 自動二輪車における排気ガスセンサ装置
JP14978999 1999-05-28

Publications (3)

Publication Number Publication Date
EP1055808A2 EP1055808A2 (fr) 2000-11-29
EP1055808A3 EP1055808A3 (fr) 2000-12-20
EP1055808B1 true EP1055808B1 (fr) 2003-04-09

Family

ID=15482761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000108192 Expired - Lifetime EP1055808B1 (fr) 1999-05-28 2000-04-13 Moto ayant un détecteur de gaz d'échappement

Country Status (5)

Country Link
EP (1) EP1055808B1 (fr)
JP (1) JP4145423B2 (fr)
CN (1) CN1135294C (fr)
DE (1) DE60002002T2 (fr)
TW (1) TW510436U (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4152796B2 (ja) * 2003-04-10 2008-09-17 本田技研工業株式会社 内燃機関におけるシリンダヘッドの排気ガスセンサの取付け構造
JP4293916B2 (ja) * 2004-01-19 2009-07-08 本田技研工業株式会社 内燃機関の排気ガスセンサ取り付け構造
JP4392315B2 (ja) 2004-09-30 2009-12-24 本田技研工業株式会社 自動二輪車における空燃比センサの配置構造
JP2006097605A (ja) 2004-09-30 2006-04-13 Honda Motor Co Ltd 自動二輪車における空燃比センサの配置構造
JP4332102B2 (ja) * 2004-11-30 2009-09-16 本田技研工業株式会社 エンジンの空燃比制御装置
JP4610467B2 (ja) * 2005-11-02 2011-01-12 本田技研工業株式会社 内燃機関
JP4693733B2 (ja) * 2006-05-31 2011-06-01 本田技研工業株式会社 自動二輪車の触媒配置構造
JP4924190B2 (ja) * 2007-05-08 2012-04-25 スズキ株式会社 スクーター型車両
JP4900293B2 (ja) * 2008-03-19 2012-03-21 スズキ株式会社 自動二輪車の排気ガスセンサ装置
JP5103344B2 (ja) * 2008-09-30 2012-12-19 本田技研工業株式会社 自動二輪車
JP5411555B2 (ja) * 2009-03-31 2014-02-12 本田技研工業株式会社 内燃機関
JP2010234949A (ja) * 2009-03-31 2010-10-21 Keihin Corp 酸素濃度センサの取り付け構造
JP5644124B2 (ja) * 2010-02-02 2014-12-24 スズキ株式会社 自動二輪車の排気ガスセンサ取付構造
JP5585213B2 (ja) * 2010-05-28 2014-09-10 スズキ株式会社 内燃機関の排気ガス通路構造
JP5849071B2 (ja) * 2013-07-10 2016-01-27 本田技研工業株式会社 小型車両の排気構造
JP6346117B2 (ja) * 2015-03-26 2018-06-20 本田技研工業株式会社 自動二輪車
CN110053691B (zh) * 2015-07-24 2021-01-05 本田技研工业株式会社 跨骑型车辆

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69213780T2 (de) * 1991-02-22 1997-01-30 Yamaha Motor Co Ltd Motorrad mit Abgasvorrichtung
US5946908A (en) * 1996-01-17 1999-09-07 Yamaha Hatsudoki Kabushiki Kaisha Engine control and wall temperature sensor

Also Published As

Publication number Publication date
EP1055808A3 (fr) 2000-12-20
JP2000335467A (ja) 2000-12-05
EP1055808A2 (fr) 2000-11-29
CN1135294C (zh) 2004-01-21
CN1277315A (zh) 2000-12-20
DE60002002T2 (de) 2003-10-16
TW510436U (en) 2002-11-11
JP4145423B2 (ja) 2008-09-03
DE60002002D1 (de) 2003-05-15

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