WO2003035461A1 - Systeme de soupape de regulation d'air secondaire pour echappement dans un motocycle - Google Patents

Systeme de soupape de regulation d'air secondaire pour echappement dans un motocycle Download PDF

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Publication number
WO2003035461A1
WO2003035461A1 PCT/JP2001/009214 JP0109214W WO03035461A1 WO 2003035461 A1 WO2003035461 A1 WO 2003035461A1 JP 0109214 W JP0109214 W JP 0109214W WO 03035461 A1 WO03035461 A1 WO 03035461A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary air
engine
control valve
main frame
air control
Prior art date
Application number
PCT/JP2001/009214
Other languages
English (en)
Japanese (ja)
Inventor
Yasuhiro Takada
Dai Hiwatashi
Shoichiro Sato
Original Assignee
Honda Giken Kogyo Kabushiki Kaisha
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 Giken Kogyo Kabushiki Kaisha filed Critical Honda Giken Kogyo Kabushiki Kaisha
Priority to PCT/JP2001/009214 priority Critical patent/WO2003035461A1/fr
Priority to CNB01823724XA priority patent/CN1275825C/zh
Priority to BRPI0117156-9B1A priority patent/BR0117156B1/pt
Priority to JP2003537988A priority patent/JP3975198B2/ja
Priority to KR1020047005240A priority patent/KR100618728B1/ko
Priority to TW090129148A priority patent/TW558595B/zh
Priority to ARP020100991A priority patent/AR033184A1/es
Publication of WO2003035461A1 publication Critical patent/WO2003035461A1/fr

Links

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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/227—Control of additional air supply only, e.g. using by-passes or variable air pump drives using pneumatically operated valves, e.g. membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10196—Carburetted engines
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/34—Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port

Definitions

  • an intake device including an air cleaner and a carburetor, wherein an engine disposed below the main frame with a cylinder axis inclined forward is suspended on a body frame including a main frame extending rearward and downward from a head pipe.
  • the present invention relates to motorcycles placed above the engine, and in particular, to improvements in the arrangement of secondary air control valves for exhaust.
  • the secondary air control valve is disposed behind the engine even though the cylinder axis of the engine is inclined forward, despite the presence of an empty space between the main frame and the engine. As a result, the length of the secondary air supply line connecting the secondary air control valve and the engine becomes longer.
  • the present invention has been made in view of such circumstances, and a secondary air control valve has been arranged by effectively utilizing a space between a main frame and an engine to shorten a secondary air supply line.
  • An object of the present invention is to provide an arrangement structure of a secondary air control valve for exhaust in a motorcycle.
  • the present invention provides a vehicle body frame including a main frame extending rearward and downward from a head pipe, wherein an engine disposed below the main frame with a cylinder axis inclined forward is suspended, and an air cleaner and
  • a secondary air control valve for controlling supply of secondary air for exhaust to an exhaust port of the engine is provided above the engine.
  • the carburetor of the intake device disposed between the engine and the main frame, which tilts the cylinder axis forward, and the cell motor mounted on the upper portion of the engine, are disposed above the engine.
  • the secondary air control valve can be effectively placed in the space created between Moreover, since the secondary air control valve is arranged near the engine, the secondary air supply 1-pipe connecting the secondary air control valve and the engine can be shortened.
  • a secondary air cleaner connected to the secondary air control valve on an upstream side thereof interposes a center line passing through a center in a width direction of the main frame.
  • the carburetor and the secondary air cleaner are arranged at positions shifted in the width direction of the vehicle body frame, so that the engine and the The carburetor and secondary air cleaner can be effectively placed in the narrow space between the main frames.
  • most of a secondary air supply pipe connecting the secondary air control valve and an exhaust port of the engine is located at a center in a width direction of the main frame.
  • the third feature is that the carburetor and the secondary air supply line are arranged on the opposite side of the vaporizer with the passing center line therebetween. can do.
  • FIG. 1 is a side view of a motorcycle
  • FIG. 2 is a left side view of the motorcycle near an engine
  • FIG. 3 is a view of the motorcycle near an engine.
  • Fig. 4 is a view taken in the direction of arrow 4 in Fig. 2 without the main frame
  • Fig. 5 is an enlarged sectional view taken along line 5-5 in Fig. 3
  • Fig. 6 is an enlarged sectional view taken along line 6-6 in Fig. 2. It is.
  • the motorcycle body frame F of the motorcycle includes a head pipe 12 for supporting the front fork 11 so as to be steerable, a main frame 13 extending rearward and downward from the head pipe 12, and the main frame. 13 and a pair of left and right lyaframes 14 connected to the rear of the front fork 11 and extending upward.
  • the front wheel WF is rotatably supported at the lower end of the front fork 11.
  • a steering handle 15 is connected to the upper end.
  • hanger plates 16 are fixed to both sides of the intermediate portion of main frame 13, respectively, and pivot plates 17 are provided to both sides of the rear portion of main frame 13. It is fixed.
  • An engine E having a cylinder axis C 1 inclined forward is disposed below the main frame 13.
  • the engine E is supported by the hanger plates 16 and the pivot plates 17 so that Suspended on frame F.
  • footsteps 18 for occupants to put their feet on are provided.
  • the pivot plate 17 is provided with a cylindrical support shaft 20, and front ends of a pair of left and right lyaforks 21... Are supported on both ends of the support shaft 20 so as to be able to swing up and down.
  • the rear wheel WR is supported between the rear ends.
  • the upper part of the rear wheel WR is covered by a lender fender 24 attached to the lya frame 14.
  • a fuel tank 25 supported by the lya frame 14 is arranged above the lender fender 24. Is done.
  • a tandem seat 26, which is a seat for riding, is disposed so as to cover the fuel tank 25, and a rear cushion unit 27 is provided between the rear frame 14 and both rear forks 21. Are provided.
  • the vehicle body frame F is covered with a vehicle body cover 30 made of synthetic resin.
  • the vehicle body cover 30 includes a pair of left and right main frame side power members 31 that cover both sides of the main frame 13, A pair of left and right redder shields 3 2... fastened to the front of both main frame side covers 3 1... so that the legs are covered from the front, and both sides by covering the head pipe 12 from the front.
  • the front cover part 3 3 connected to the redder shield 3 2... and the upper cover connected to the front top cover 3 3 covering the head pipe 12 from the rear side and covering the main frame 13 from above.
  • an under-force bar 3 5 connected to the lower part of both main frame side covers 3 1 ..., and a pair of right and left lya side covers that cover the rear of the body frame F from both sides together with most of the fuel tank 25.
  • 3 6 ...
  • an intake device 40 including an air cleaner 37, a carburetor 38 and an intake pipe 39 is arranged above the engine E.
  • a pair of mounting plate portions 37a, 37a sandwiching the main frame 13 from both sides are provided on the body, and both mounting plate portions 37a, 37a are provided. Fastened to both sides of the main frame 13 by the ports 41,41. That is, the vacuum cleaner 37 is fixed to the main frame 13.
  • the upstream end of the carburetor 38 located above the cylinder head 42 in the engine E is directly connected to the air cleaner 37, and the intake pipe is connected to the downstream end of the carburetor 38 at the upstream end.
  • the downstream end of the intake pipe 39 is formed so as to be continuous with the intake port 43 arranged at the upper part of the cylinder head 42. 2 is connected to the upper side wall.
  • An upstream end of an exhaust pipe 45 is connected to a lower side wall of the cylinder head 42 so as to be continuous with an exhaust port 44 arranged below the cylinder head 42.
  • the exhaust pipe 45 extends rearward from the cylinder head 42 and is connected to an exhaust muffler 46 (see FIG. 1) disposed on the right side of the rear wheel WR.
  • the exhaust port 44 of the cylinder head 42 of the engine E is supplied with secondary air for exhaust, and the secondary air for controlling the supply of the secondary air to the exhaust port 44 is controlled.
  • An air control valve 48 is arranged between the starter 50 attached to the upper part of the crankcase 49 of the engine E and the carburetor 38 and between the engine E and the main frame 13.
  • the secondary air control valve 48 includes a diaphragm actuator 52, an on-off valve 53 that is driven to close by the diaphragm actuator 52, and an exhaust port of the engine E.
  • the diaphragm valve 52 which is composed of a lead valve 54 that only allows air to flow to the side 44, holds the peripheral edge with the casing 55 and the casing 55.
  • a metal rod 57 having one end connected to the center of the diaphragm 56.
  • the casing 55 includes a body 58 and a cover 59 which is fastened to the body 58 by hermetically sandwiching a peripheral portion of the diaphragm 56 therebetween, and includes a force par 59 and a diaphragm.
  • a negative pressure chamber 60 facing one surface of the diaphragm 56 is formed between 56 and the atmospheric pressure chamber 61 between the body 58 and the diaphragm 56. It is formed.
  • a connecting pipe portion 63 having a distal end fc restricting hole 62 is continuously provided, and a negative pressure extracting pipe communicating with the negative pressure chamber 60 through the restricting hole 62 is provided.
  • the line 64 is connected to the connection pipe 63, and the negative pressure extraction pipe 64 is connected to the intake pipe 39 of the suction device 40 as shown in FIG. As a result, the negative pressure in the intake pipe 39 acts on the negative pressure chamber 60.
  • the rod 57 is supported by the body 58 so as to be movable in the axial direction, and one end of the rod 57 is directly connected to the center of the diaphragm 56 on the atmospheric pressure chamber 61 side.
  • Kuchiyue 52 when the negative pressure in the intake pipe 39 increases, the diaphragm 56 flexes in the direction of decreasing the volume of the negative pressure chamber 60, and the rod 57 moves upward in FIG. Will work.
  • the on-off valve 53 includes a valve housing 67, a valve element 68 fixed to the other end of the rod 57, and a return spring 69 provided between the valve housing 67 and the valve element 68. .
  • the valve housing 67 includes the body 58 and a suction cover 70 that is hermetically fastened to the body 58.
  • the body 58 includes an air flow passage 71 and air.
  • a communication hole 72 that allows the flow passage 71 to communicate with the atmospheric pressure chamber 61; a valve hole 73 that communicates with the rod 57 through the upstream end of the air flow passage 71; and the air flow passage
  • a valve seat 74 having the valve hole 73 opened at the center on the side opposite to 71, and a support cylinder 75 partially inserted coaxially into the valve hole 73 are provided.
  • a rod 57 coaxially penetrating through the hole 73 is fitted into the support cylinder 75 so as to be movable in the axial direction three times.
  • a valve chamber 76 is formed between the body 58 and the suction cover 70. Further, a connection pipe portion 77 communicating with the valve chamber 76 is formed in the suction cover 70 so that the downstream end of the pipe 78 is connected to the connection pipe 77.
  • the upstream end of the conduit 78 is connected to a secondary air cleaner 79, and an air introduction conduit 80 connected to the upstream end of the secondary air cleaner 79 is connected to the main frame 13 near the head pipe 12. It is extended forward along.
  • the secondary air cleaner 79 is disposed on the opposite side of the carburetor 38 with respect to the center line C2 passing through the center of the main frame 13 in the width direction.
  • the valve seat 74 is formed in the body 58 so as to face the valve chamber 76, and the valve seat 74 A valve body 68 accommodated in the valve chamber 76 is provided at the other end of the rod 57 so as to be able to be seated on the other end.
  • the return spring 69 has a coil shape surrounding the support cylindrical portion 75, and the direction in which the valve element 68 is separated from the valve seat 74, that is, the diaphragm 5 of the diaphragm actuator 52.
  • the spring 6 is provided between the body 58 and the valve element 68 by exerting a spring force in a direction of bending the element 6 toward the atmospheric pressure chamber 61.
  • the reed valve 54 is supported by a disc-shaped valve support plate 82 having a valve hole 81 at the center so as to be able to open and close the valve hole 81.
  • the plate 82 is hermetically sandwiched between the body 58 and the third cover 83 fastened to the pod 58 so that the valve hole 81 communicates with the downstream end of the air flow passage 71.
  • a valve chamber 84 for accommodating the reed valve 54 is formed between the third cover 83 and the valve support plate 82.
  • the valve chamber 84 is formed integrally with the third force par 83 so as to communicate with the valve chamber 84.
  • the upstream end of the secondary air supply line 86 is connected to the connection tube 85 provided.
  • the downstream end of the secondary air supply pipe 86 is connected to a lower portion of the cylinder head 42 so as to communicate with the exhaust port 44 of the cylinder head 42 of the engine E.
  • most of the secondary air supply line 86 is arranged on the opposite side of the carburetor 38 with respect to the center line C2 passing through the center of the main frame 13 in the width direction.
  • Such a secondary air control valve 48 is fixed to the main frame 13 of the body frame F. That is, a stay 87 is fastened to the side surface of the main frame 13, and a support flange 58 a provided integrally with the body 58 so as to contact the stay 87 from below is provided with the stay 87. It is concluded to 7.
  • a fuel tank 25 arranged below the tandem seat 26 and a carburetor 38 arranged below the front of the fuel tank 25 form a fuel supply pipe extending downward from the fuel tank 25.
  • a negative pressure operated fuel cock 90 that operates by the negative intake air pressure of the engine E is interposed.
  • a fuel cock 90 includes a casing 91, a diaphragm 92 whose peripheral portion is sandwiched by the casing 91, a valve body 93 fixed to a central portion of the diaphragm 92, And a return spring 94 provided between the single thing 91 and the diaphragm 92.
  • the casing 91 includes a body 95 and a cover 96 which is airtightly sandwiched between the peripheral edges of the diaphragm 92 and is caulked to the body 95.
  • a negative pressure chamber 97 facing one surface of the diaphragm 92 is formed between the first and second diaphragms 92.
  • a spring receiving plate 98 is in contact with the inner surface of the cover 95 within the negative pressure chamber 97, and the return spring 94 flexes the diaphragm 92 toward the side that increases the volume of the negative pressure chamber 97.
  • the spring is contracted between the diaphragm 92 and the spring receiving plate 98 so as to exert the spring force in the turning direction.
  • the cover 96 is provided with a connecting pipe portion 99 communicating with the negative pressure chamber 97 on the body, and a negative connection is provided between the connecting pipe portion 99 and the intake pipe 39 of the intake device 40. Connected by pressure extraction line 100. That is, the negative pressure in the intake pipe 39 is introduced into the negative pressure chamber 97.
  • a valve chamber 101 is formed between the diaphragm 92 and the body 95, and a valve seat in which the valve body 93 fixed to the center of the diaphragm 92 is seated in the body 95. 102 and a valve hole 103 having a downstream end opened at the center of the valve seat 102.
  • a line portion 8 8a connecting the fuel tank 25 and the fuel cock 90 is connected to the body 95 so as to communicate with the valve hole 103
  • the fuel line 8 a pipe portion 8 b connecting between the carburetor 38 and the fuel cock 90 is connected to the body 95 so as to communicate with the valve chamber 101.
  • the intake pipe 39 is provided with a mounting stay 39a that protrudes toward the fuel cock 90 side, and a support plate 104 fastened to the mounting stay 39a includes the fuel
  • the flange 95 a provided integrally with the body 95 of the cock 90 is fastened. That is, the fuel cock 90 is attached to the intake pipe 39. With the fuel cock 90 attached to the intake pipe 39 in this manner, the fuel cock 90 is disposed below the main frame 13 and beside the secondary air control valve 48, and the carburetor 3 It is located on the opposite side of 8.
  • a pre-air supply line 105 for introducing pre-ad air to the carburetor 38 is provided between the air cleaner 37 and the carburetor 38, and the bleed air supply line 105 On the way, a lead air air cleaner 106 is provided so as to be disposed above the secondary air cleaner 79.
  • the cylinder axis C1 is inclined forward to A secondary air control valve 48 for controlling the supply of secondary air for exhaust to the exhaust port 44 of the engine E disposed below the engine frame 13 is provided for the intake device 40 disposed above the engine E. It is arranged between the carburetor 38 and the starter 50 mounted on the upper part of the engine E, and between the engine E and the main frame 13. Therefore, the secondary air control valve 48 is effectively disposed in the space created between the engine E and the main frame 13 with the cylinder axis C1 inclined forward and between the carburetor 38 and the starter motor 50. be able to. In addition, since the secondary air control valve 48 is located near the engine E, the secondary air supply line 8 connecting the secondary air control valve 48 and the exhaust port 44 of the engine E 6 can be shortened.
  • a secondary air cleaner 79 connected upstream from the secondary air control valve 48 is disposed on the opposite side of the carburetor 38 with respect to a center line C 2 passing through the center of the main frame 13 in the width direction.
  • the carburetors 38 and the secondary air cleaner 79 are arranged at positions offset in the width direction of the body frame F, and the carburetors 38 and the secondary air cleaner 79 are placed in the narrow space between the engine E and the main frame 13.
  • the air cleaner 79 can be effectively arranged.
  • the secondary air supply line 86 is disposed on the opposite side of the carburetor 38 with respect to the center line C2 passing through the center of the main frame 13 in the width direction.
  • the secondary air supply pipe 86 can be placed in the compact by moving it to the main frame 13 side.
  • a negative pressure operated fuel cock 90 provided in the middle of a fuel supply line 88 to the carburetor 48 is disposed below the main frame 13 and beside the secondary air control valve 48. Since the fuel cock 90 is arranged beside the secondary air control valve 48 arranged between the gasifier 38 and the cell motor 50, the fuel cock 90 is attached to the carburetor 38. Can be brought close to each other, and the negative pressure extraction pipeline 100 that guides negative pressure from the intake device 40 to the fuel cock 90 can be shortened.
  • a fuel cock 90 is provided in the middle of the fuel supply line 88 extending from the fuel tank 25 to the front and connected to the carburetor 38, so that the fuel supply from the fuel tank 25 is stopped.
  • the fuel cock 90 is attached to the intake pipe 39 of the intake device 40, the arrangement of the fuel cock 90 is different from that in which the fuel cock 90 is attached to the fuel tank 25.
  • the above degree of freedom can be increased.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Selon l'invention, dans un motocycle, un moteur disposé en-dessous d'un châssis principal est suspendu alors que l'axe de cylindre est incliné vers l'avant depuis la carrosserie, le châssis principal s'étendant vers le bas en direction arrière. Ledit moteur comprend également un système d'admission comprenant un purificateur d'air et un carburateur est disposé au-dessus du moteur. Une soupape de régulation d'air secondaire (48) destinée à réguler l'alimentation en air secondaire pour l'échappement, jusqu'à l'orifice d'échappement du moteur (E), est interposée entre un moteur de démarrage (50) fixé à une partie supérieure du moteur (E) et le carburateur (38), et entre le moteur (E) et le châssis principal (13). Comme la soupape de régulation d'air secondaire est disposée pour utiliser effacement l'espace formé entre le châssis principal et le moteur, la conduite d'alimentation en air secondaire peut être raccourcie.
PCT/JP2001/009214 2001-10-19 2001-10-19 Systeme de soupape de regulation d'air secondaire pour echappement dans un motocycle WO2003035461A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/JP2001/009214 WO2003035461A1 (fr) 2001-10-19 2001-10-19 Systeme de soupape de regulation d'air secondaire pour echappement dans un motocycle
CNB01823724XA CN1275825C (zh) 2001-10-19 2001-10-19 两轮摩托车中的排气用2次空气控制阀的配置构造
BRPI0117156-9B1A BR0117156B1 (pt) 2001-10-19 2001-10-19 Estrutura de disposição de válvula de controle de ar secundário de descarga em uma motocicleta
JP2003537988A JP3975198B2 (ja) 2001-10-19 2001-10-19 自動二輪車における排気用２次空気制御弁の配置構造
KR1020047005240A KR100618728B1 (ko) 2001-10-19 2001-10-19 자동 2륜차에 있어서의 배기용 2차 공기 제어 밸브의 배치구조
TW090129148A TW558595B (en) 2001-10-19 2001-11-22 Arrangement of secondary air control valve for exhaust in motorcycle
ARP020100991A AR033184A1 (es) 2001-10-19 2002-03-20 Estructura de disposicion de valvula de control de aire secundario para escape en motocicleta.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/009214 WO2003035461A1 (fr) 2001-10-19 2001-10-19 Systeme de soupape de regulation d'air secondaire pour echappement dans un motocycle

Publications (1)

Publication Number Publication Date
WO2003035461A1 true WO2003035461A1 (fr) 2003-05-01

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ID=11737853

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/009214 WO2003035461A1 (fr) 2001-10-19 2001-10-19 Systeme de soupape de regulation d'air secondaire pour echappement dans un motocycle

Country Status (7)

Country Link
JP (1) JP3975198B2 (fr)
KR (1) KR100618728B1 (fr)
CN (1) CN1275825C (fr)
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ES2264293A1 (es) * 2002-05-24 2006-12-16 Honda Giken Kogyo Kabushiki Kaisha Aparato de suministro de aire secundario para motocicleta.
CN100417572C (zh) * 2004-09-29 2008-09-10 本田技研工业株式会社 摩托车

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN110562375A (zh) * 2018-05-17 2019-12-13 厦门厦杏摩托有限公司 电动摩托车
CN216811934U (zh) * 2020-11-16 2022-06-24 浙江春风动力股份有限公司 一种发动机及采用该发动机的摩托车
CN114704366A (zh) * 2022-04-13 2022-07-05 山东盛沃新能源发展有限公司 一种用于达到节能减排目的的摩托车用二次补气装置

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JPH062537A (ja) * 1992-06-19 1994-01-11 Yamaha Motor Co Ltd 自動二輪車の排気浄化装置
JPH06270877A (ja) * 1993-03-23 1994-09-27 Suzuki Motor Corp 自動二輪車の二次空気装置
JPH06341327A (ja) * 1993-06-03 1994-12-13 Suzuki Motor Corp 自動二輪車用エンジン
JPH08258618A (ja) * 1995-03-27 1996-10-08 Suzuki Motor Corp 自動二輪車用ヘッドライト点灯制御装置
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JPS5891319A (ja) * 1981-11-25 1983-05-31 Honda Motor Co Ltd 自動二輪車における内燃機関の排気浄化装置
JPH062537A (ja) * 1992-06-19 1994-01-11 Yamaha Motor Co Ltd 自動二輪車の排気浄化装置
JPH06270877A (ja) * 1993-03-23 1994-09-27 Suzuki Motor Corp 自動二輪車の二次空気装置
JPH06341327A (ja) * 1993-06-03 1994-12-13 Suzuki Motor Corp 自動二輪車用エンジン
JPH08258618A (ja) * 1995-03-27 1996-10-08 Suzuki Motor Corp 自動二輪車用ヘッドライト点灯制御装置
JP2000087748A (ja) * 1998-09-14 2000-03-28 Honda Motor Co Ltd 水冷式エンジン

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2264293A1 (es) * 2002-05-24 2006-12-16 Honda Giken Kogyo Kabushiki Kaisha Aparato de suministro de aire secundario para motocicleta.
CN100417572C (zh) * 2004-09-29 2008-09-10 本田技研工业株式会社 摩托车

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CN1275825C (zh) 2006-09-20
KR20040052227A (ko) 2004-06-22
JP3975198B2 (ja) 2007-09-12
CN1558851A (zh) 2004-12-29
TW558595B (en) 2003-10-21
AR033184A1 (es) 2003-12-10
BR0117156A (pt) 2004-08-17
BR0117156B1 (pt) 2013-11-05
JPWO2003035461A1 (ja) 2005-02-10
KR100618728B1 (ko) 2006-08-31

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