JPS6017220A - Exhaust purification device for engine in motorcycle - Google Patents

Exhaust purification device for engine in motorcycle

Info

Publication number
JPS6017220A
JPS6017220A JP58124938A JP12493883A JPS6017220A JP S6017220 A JPS6017220 A JP S6017220A JP 58124938 A JP58124938 A JP 58124938A JP 12493883 A JP12493883 A JP 12493883A JP S6017220 A JPS6017220 A JP S6017220A
Authority
JP
Japan
Prior art keywords
exhaust
engine
secondary air
pipe
exhaust port
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.)
Granted
Application number
JP58124938A
Other languages
Japanese (ja)
Other versions
JPH0514085B2 (en
Inventor
Masabumi Araki
荒木 正文
Hiroshi Tsuno
津野 宏
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
Priority to JP58124938A priority Critical patent/JPS6017220A/en
Publication of JPS6017220A publication Critical patent/JPS6017220A/en
Publication of JPH0514085B2 publication Critical patent/JPH0514085B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/30Arrangements for supply of additional air
    • F01N3/34Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/28Construction of catalytic reactors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/02Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

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

Abstract

PURPOSE:To accelerate a purification reaction in a catalytic converter, by connecting a secondary air feeding system for exhaust purification only to an exhaust port of a front engine block in a V-type engine. CONSTITUTION:A secondary air feeding system for exhaust purification is interconnected only to an exhaust port 4 of a front engine block. Secondary air is inhaled into the exhaust port 4 by way of an air cleaner AC, a secondary air feeding main pipe 30, a joint 27, a secondary air distributing pipe 26 and a secondary air passage 17. The inhaled secondary air quickly oxidizes an uncombustive component or an incomplete combustion component, contained in exhaust gas, inside both the exhaust port 4 and a front exhaust pipe 5, and the heat of reaction heats the exhaust gas flowing inside the front exhaust pipe 5. The heated exhaust flows into a catalytic converter 14 via an exhaust concentration chamber 10 so that the purification reaction in the catalytic converter can be well accelerated.

Description

【発明の詳細な説明】 本発明は自動二輪車におけるエンジンの排気系に二次空
気を供給して、該排気系を流れる未燃有害成分を酸化除
去するようにした排気浄化装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust purification device that supplies secondary air to the exhaust system of an engine in a motorcycle and oxidizes and removes unburned harmful components flowing through the exhaust system.

車体フレームに、その前後方向に前、後部エンジンブロ
ックをV字状に配置したV型エンジンを配置した自動二
輪車では、前部エンジンブロックの排気ポートに接続さ
れる前部排気管は、エンジンの下側を通って後方に延長
され、また後部エンジンブロックの排気ポートに接続さ
れる後部排気管はエンジンの後側を通って下方に延長さ
れ、それら前、後部排気管は排気集合チャンバを介して
排気マフラに接続されるような排気系のレイアウトを採
用したものが従来より知られている。
In motorcycles equipped with a V-type engine in which the front and rear engine blocks are arranged in a V-shape in the longitudinal direction of the body frame, the front exhaust pipe connected to the exhaust port of the front engine block is located under the engine. A rear exhaust pipe extends rearward through the side and connects to the exhaust port of the rear engine block, and a rear exhaust pipe extends downward through the rear side of the engine, and the front and rear exhaust pipes exhaust through an exhaust collection chamber. Conventionally, exhaust system layouts that are connected to a muffler have been known.

ところでこのような排気系レイアウトを備えた自動二輪
車では、後部排気管は比較的短<、シかもそこに走行p
が当たりにくいため、その中を流れる排気は高温に保た
れたまま排気集合チャンバに流入するのに対して前部排
気管は比較的長く、しかもそこに走行風が良く当るので
、その中を流れる排気は温度が若干低下して排気集合チ
ャンバに流入する。したがって排気集合チャンノ(内で
は、高温の排気と、それよりも低温の排気とが混合し、
その混合排気が排気マフラに内蔵される触媒コンバータ
に導入するが、この場合排気の温度低下が触媒による可
燃有害成分の浄化反応能率の低下要因になることがある
By the way, in motorcycles equipped with this kind of exhaust system layout, the rear exhaust pipe is relatively short, and the driver may be traveling there.
Since the front exhaust pipe is relatively long, the exhaust air flowing through it remains at a high temperature and flows into the exhaust collection chamber. The exhaust gas enters the exhaust collection chamber with a slight decrease in temperature. Therefore, in the exhaust gas collection chamber, high temperature exhaust and lower temperature exhaust mix,
The mixed exhaust gas is introduced into a catalytic converter built into the exhaust muffler, but in this case, a decrease in the temperature of the exhaust gas may become a factor in reducing the reaction efficiency of the catalyst for purifying combustible harmful components.

本発明は上記実情にかんがみてなされたもので、前記前
部排気管内を流れる排気を高温のまま排気集合チャンバ
に導入させ、前記触媒コンバータの浄化反応を促進する
ようにした自動二輪車におけるエンジンの排気浄化装置
を提供することを目的とするものである。
The present invention has been made in view of the above-mentioned circumstances, and is an exhaust gas of an engine in a motorcycle, in which the exhaust gas flowing through the front exhaust pipe is introduced into an exhaust gas collection chamber at a high temperature to promote the purification reaction of the catalytic converter. The purpose is to provide a purification device.

本発明によれば、前記目的達成のために前記V型エンジ
ンの前部エンジンブロックの排気ポートにのみ排気浄化
用二次空気供給系を接続することを特徴としている。
According to the present invention, in order to achieve the above object, a secondary air supply system for exhaust purification is connected only to the exhaust port of the front engine block of the V-type engine.

以下、図面により本発明の実施例について説明する。Embodiments of the present invention will be described below with reference to the drawings.

第1図において、自動二輪車の車体フレームFには、そ
の前後方向に前、後部エンジンブロックBf、Erを1
字状に配置したV型エンジンEがi載され、それらのエ
ンジンブロックBf、Br間のV字状空間には、キャブ
レタCαを含む吸気系1が配設され、この吸気系1の外
端にエアクリ〜すACが接続される。
In Fig. 1, a body frame F of a motorcycle has front and rear engine blocks Bf and Er arranged in the longitudinal direction.
A V-type engine E arranged in a shape of a letter i is mounted, and an intake system 1 including a carburetor Cα is arranged in the V-shaped space between the engine blocks Bf and Br. Air cleaner AC is connected.

第3図に示すように前部シリンダブロックBfは、車体
フレームFの長手方向に直交して並列される2つのシリ
ンダ2,2を備える。
As shown in FIG. 3, the front cylinder block Bf includes two cylinders 2, 2 arranged in parallel orthogonally to the longitudinal direction of the vehicle body frame F.

前部シリンダブロックBfの前面には、排気弁3を介し
て各シリンダ2にそれぞれ連通する排気ポート4が開口
され、各排気ポート4には、二重管よりなる前部排気管
5の前端が接続される。この前部排気管5は、エンジン
Eの下側を通って後方に延長される。また後部シリンダ
ブロックBrも車体フレームFの長手方向に直交して並
列され四蚕1旨へづプづ5雫の後面には排気弁7を介し
て各シリンダ6に連通ずる。排気ポート8が開口され、
この排気ポート8には一重管よりなる後部排気管9の前
端が接続される。この後部排気管9はエンジンEの後側
を通って下方に延長される。
Exhaust ports 4 that communicate with each cylinder 2 through exhaust valves 3 are opened on the front surface of the front cylinder block Bf, and each exhaust port 4 has a front end of a front exhaust pipe 5 made of a double pipe. Connected. This front exhaust pipe 5 passes under the engine E and extends rearward. Further, the rear cylinder blocks Br are also arranged in parallel orthogonally to the longitudinal direction of the vehicle body frame F, and communicate with each cylinder 6 through an exhaust valve 7 on the rear surface of each of the four cylinder blocks Br. The exhaust port 8 is opened,
The front end of a rear exhaust pipe 9 made of a single pipe is connected to the exhaust port 8. This rear exhaust pipe 9 passes through the rear side of the engine E and extends downward.

前記エンジンEの後方下側には排気集合チャンバ10が
配設され、該チャンバ1002つの入口11.12には
、前記前部および後部排気管5p9の開口端が接続され
る。排気集合チャンバ1oは横方向(第1.2図紙面と
直角方向)に長く形成され、その左右両端部後面の出口
13には、対をなす排気マフラMfがそれぞれ接続され
る。各排気マクラMf内前部にはモノリス型触媒コンノ
く一タ14が内蔵される。
An exhaust gas collection chamber 10 is disposed at the rear lower side of the engine E, and the open ends of the front and rear exhaust pipes 5p9 are connected to two inlets 11, 12 of the chamber 100. The exhaust gas collection chamber 1o is formed to be long in the lateral direction (perpendicular to the plane of the drawing in FIG. 1.2), and a pair of exhaust mufflers Mf is connected to the outlet 13 at the rear surface of both left and right ends of the chamber 1o. A monolithic catalyst converter 14 is built in the front part of each exhaust pillow Mf.

第3図に示すように、前部エンジンブロックB)のシリ
ンダヘッド15の側部には、二次空気通路17が一体に
形成され、この通路1γの一端は排気ポート4の排気弁
3近傍に連通され、またその他端はリード弁りの出口1
8に連通される。前記リード弁りは、前記エンジンブロ
ックBfのシリンダブロック16の後側、すなわちV字
状空間側に設けられる。
As shown in FIG. 3, a secondary air passage 17 is integrally formed on the side of the cylinder head 15 of the front engine block B), and one end of this passage 1γ is located near the exhaust valve 3 of the exhaust port 4. The other end is connected to outlet 1 of the reed valve.
8. The reed valve valve is provided on the rear side of the cylinder block 16 of the engine block Bf, that is, on the V-shaped space side.

次にこのリード弁りの構造を説明すると、前記シリンダ
ブロック16の後面には、弁部19が形成され、この弁
部19の凹部には、す―ド弁体20が耐熱パツキン材2
1を介して嵌着され、このリード弁体20は弁部19上
に固着される弁キャップ22によって固定される。リー
ド弁体20(ま、その中央部・に弁孔23が開口される
とともにこの弁口23を開閉するリード24が止着され
る。前記リード弁体20は弁室25を上流室Wと下流室
dとに区画しており、前記上流室uK+ま二次空気分配
管26が連通され、また前記下流室dに(′!、前記二
次空気通路17が連通される。二次空気分配管26の他
端は、ジヨイント2Tの出口28に連通され、該ジョイ
ント270入口29には二次空気供給主管30が連通さ
れ、肢管30は空気制御弁Vを介してエアクリーナ、4
cに連通される。空れるようになっている。
Next, to explain the structure of this reed valve, a valve portion 19 is formed on the rear surface of the cylinder block 16, and a reed valve body 20 is placed in a recessed portion of the valve portion 19 using a heat-resistant packing material 2.
This reed valve body 20 is fixed by a valve cap 22 which is fixed onto the valve portion 19. A reed valve body 20 (well, a valve hole 23 is opened in the center thereof, and a reed 24 for opening and closing this valve port 23 is fixed. The reed valve body 20 connects the valve chamber 25 to the upstream chamber W and the downstream chamber The secondary air distribution pipe 26 is communicated with the upstream chamber uK+, and the secondary air passage 17 is communicated with the downstream chamber d ('!). The other end of 26 is connected to the outlet 28 of the joint 2T, the inlet 29 of the joint 270 is connected to the secondary air supply main pipe 30, and the limb pipe 30 is connected to the air cleaner 4 through the air control valve V.
c. It is now empty.

次に本発明の実施例の作用について説明する。Next, the operation of the embodiment of the present invention will be explained.

いまエンジンEが運転されると、第2図に矢印で示すよ
うにして前部エンジンブロックBfからの排気は前部排
気管5を、また後部エンジンブロックBTからの排気は
後部排気管9をそれぞれ流れて排気集合チャンバ10に
合流し、そこより排気マフラMfに流れ触媒コンノ(−
夕14により浄化されて大気へ放出される。
When the engine E is operated now, the exhaust from the front engine block Bf is routed through the front exhaust pipe 5, and the exhaust from the rear engine block BT is routed through the rear exhaust pipe 9, as shown by the arrows in FIG. It flows into the exhaust gas collecting chamber 10, and from there it flows into the exhaust muffler Mf and the catalyst conduit (-
It is purified and released into the atmosphere on the 14th.

また排気弁3の開閉により排気ポート4に発生した排気
脈動は二次空気通路11を通ってリード弁りに作用し、
該リード弁りのリード24を間歇的に開弁する。これに
よりエアクリーナACからの二次空気は空気制御弁V、
二次空気供給主管30を通ってジヨイント27に至り、
さらにそこより各二次空気分配管26.リード弁り、二
次空気通路11を通って排気ポート4に吸入される。排
気ポート4に流入した二次空気は排気中に混合し、排気
ポート4および前部排気管5内でその中に含まれる未燃
焼成分や不完全燃焼成分を素早く酸化反応させ、その反
応熱は前部排気管5内を流れる排気を加熱することがで
きる。
Furthermore, the exhaust pulsation generated in the exhaust port 4 by opening and closing the exhaust valve 3 passes through the secondary air passage 11 and acts on the reed valve.
The reed 24 of the reed valve is opened intermittently. As a result, the secondary air from the air cleaner AC is transferred to the air control valve V,
It passes through the secondary air supply main pipe 30 and reaches the joint 27,
Furthermore, each secondary air distribution pipe 26. The air is sucked into the exhaust port 4 through the reed valve and the secondary air passage 11. The secondary air that has flowed into the exhaust port 4 is mixed with the exhaust gas, and the unburned components and incompletely burned components contained therein are quickly oxidized in the exhaust port 4 and the front exhaust pipe 5, and the reaction heat is The exhaust gas flowing inside the front exhaust pipe 5 can be heated.

したがって前部排気管5が長く、そこに走行風が当って
も肢管5を流れる排気は、前記反応熱により高温を保っ
たまま排気集合チャンバ10へ流れ、一方前述のように
後部排気管9には走行風が当りにくく、しかも前部排気
管5よりも短′いので、肢管5を流れる排気は高温を保
ったまま排気集合チャンバ10へ流れるので、排気集合
チャンバ10内では、前部および後部排気管5,9から
の排気が温度低下を招くことなく合流してそこより触媒
コンバータ14内に流入する。触媒コンバータ14内で
は高温の排気の流入により浄化反応が促進される。
Therefore, even if the front exhaust pipe 5 is long and is hit by the running wind, the exhaust flowing through the limb pipe 5 will flow to the exhaust gas collection chamber 10 while maintaining a high temperature due to the reaction heat, while as described above, the rear exhaust pipe 9 It is difficult for the wind to hit the front exhaust pipe 5, and since the exhaust pipe 5 is shorter than the front exhaust pipe 5, the exhaust gas flowing through the limb pipe 5 flows to the exhaust collecting chamber 10 while maintaining a high temperature. The exhaust gases from the rear exhaust pipes 5 and 9 join together without causing a temperature drop and flow into the catalytic converter 14 from there. Inside the catalytic converter 14, the purification reaction is promoted by the inflow of high temperature exhaust gas.

以上のように本発明によれば、車体フレームに、前、後
部エンジンブロックを前後方向に向けて搭載したV型エ
ンジンの前部エンジンブロックの排気ボーHCのみ排気
浄化用二次空気供給系を連通したので、該排気ポートに
連なる前部排気管内を流れる排気は、前記二次空気供給
系からの二次空気と未燃焼成分や不完全燃焼成分との酸
化反応による反応熱によって加熱され、走行風によって
前部排気管内の排気温度が低下する心配がなく、その結
果触媒コンバータの浄化反応を大幅に高めることができ
る。
As described above, according to the present invention, only the exhaust bow HC of the front engine block of a V-type engine mounted on the vehicle body frame with the front and rear engine blocks facing in the longitudinal direction is connected to the secondary air supply system for exhaust purification. Therefore, the exhaust gas flowing in the front exhaust pipe connected to the exhaust port is heated by the reaction heat caused by the oxidation reaction between the secondary air from the secondary air supply system and the unburned components and incompletely burned components, and the exhaust gas flows through the front exhaust pipe connected to the exhaust port. Therefore, there is no fear that the exhaust gas temperature in the front exhaust pipe will drop, and as a result, the purification reaction of the catalytic converter can be greatly improved.

また前部エンジンブロックの排気ポートにのみ二次空気
供給系を連通したことにより、該系の数が少なくて済み
、コストの低減に寄与し得る。
Further, by communicating the secondary air supply system only to the exhaust port of the front engine block, the number of such systems can be reduced, which can contribute to cost reduction.

尚、上記実施例のように前部排気管を二重管にすれば、
抜管を流れる排気の高温保持が一層効果的に行われる。
In addition, if the front exhaust pipe is made into a double pipe as in the above example,
The high temperature of the exhaust gas flowing through the extubation tube is more effectively maintained.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を示すもので、第1図は本発明
装置を備えた自動二輪車の側面図、第2図は前記自動二
輪車に搭載されるエンジンの一部破断側面図、第3図は
第2図■−■線拡大断面図である。 Bf、BT・・・前、後部エンジンブロック、F・・・
車体フレーム、Mf・・・排気マフラ。 4.8・・・排気ポー)、5.9・・・前−9後部排気
管、10・・・排気集合チャンバ、14・・・触媒コン
バータ特許出願人 本田技研工業株式会社
The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a motorcycle equipped with the device of the present invention, FIG. 2 is a partially cutaway side view of an engine mounted on the motorcycle, and FIG. The figure is an enlarged sectional view taken along the line ■-■ in FIG. Bf, BT...front, rear engine block, F...
Body frame, Mf...exhaust muffler. 4.8...exhaust port), 5.9...front-9 rear exhaust pipe, 10...exhaust collection chamber, 14...catalytic converter patent applicant Honda Motor Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 車体フレームに、その前後方向に前、後部エンジンブロ
ックをV字状に配置したV型エンジンを搭載し、前記前
部エンジンブロックの前面に開口した排気ポートに接続
される前部排気管を、前記エンジンの下側を通って後方
に延長させ、また前記後部エンジンブロックの後面に開
口した排気ポートに接続される後部排気管を前記エンジ
ンの後側を通って下方に延長させ、前記前、後部排気管
の開口端を排気集合チャンバを介して、触媒コンバータ
を内蔵した排気マフラに接続してなる自動二輪車におい
て、前記前部エン・?ンブロックの排気ポートにのみ排
気浄化用二次空気供給系を連通することを特徴とする自
動二輪車におけるエンジンの排気浄化装置。
A V-type engine is mounted on the vehicle body frame, with front and rear engine blocks arranged in a V-shape in the longitudinal direction, and a front exhaust pipe connected to an exhaust port opened on the front surface of the front engine block is mounted on the vehicle body frame. The front and rear exhaust pipes extend rearward through the lower side of the engine, and a rear exhaust pipe connected to an exhaust port opened at the rear surface of the rear engine block extends downward through the rear side of the engine. In a motorcycle in which the open end of the pipe is connected to an exhaust muffler having a built-in catalytic converter via an exhaust collecting chamber, the front engine? An exhaust purification device for an engine in a motorcycle, characterized in that a secondary air supply system for exhaust purification is connected only to an exhaust port of a engine block.
JP58124938A 1983-07-09 1983-07-09 Exhaust purification device for engine in motorcycle Granted JPS6017220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58124938A JPS6017220A (en) 1983-07-09 1983-07-09 Exhaust purification device for engine in motorcycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58124938A JPS6017220A (en) 1983-07-09 1983-07-09 Exhaust purification device for engine in motorcycle

Publications (2)

Publication Number Publication Date
JPS6017220A true JPS6017220A (en) 1985-01-29
JPH0514085B2 JPH0514085B2 (en) 1993-02-24

Family

ID=14897894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58124938A Granted JPS6017220A (en) 1983-07-09 1983-07-09 Exhaust purification device for engine in motorcycle

Country Status (1)

Country Link
JP (1) JPS6017220A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731993A (en) * 1986-01-29 1988-03-22 Toyota Jidosha Kabushiki Kaisha Exhaust apparatus for a V-type internal combustion engine
EP1772601A1 (en) * 2005-10-07 2007-04-11 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system of motorcycle and motorcycle including exhaust system
WO2009063602A1 (en) 2007-11-15 2009-05-22 Kawasaki Jukogyo Kabushiki Kaisha Exhaust gas purifying apparatus
US7713494B2 (en) 2005-09-15 2010-05-11 Kawasaki Jukogyo Kabushiki Kaisha Exhaust purification device
US7886710B2 (en) 2005-10-13 2011-02-15 Yamaha Hatsudoki Kabushiki Kaisha Oil filter unit and motorcycle including the oil filter unit
JP2015098828A (en) * 2013-11-19 2015-05-28 スズキ株式会社 Exhaust system for motorcycle
US11506104B2 (en) 2019-02-25 2022-11-22 Honda Motor Co., Ltd. Exhaust structure for saddle riding vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5546009A (en) * 1978-09-25 1980-03-31 Yamaha Motor Co Ltd Exhaust gas purifying secondary air supply system for engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5546009A (en) * 1978-09-25 1980-03-31 Yamaha Motor Co Ltd Exhaust gas purifying secondary air supply system for engine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731993A (en) * 1986-01-29 1988-03-22 Toyota Jidosha Kabushiki Kaisha Exhaust apparatus for a V-type internal combustion engine
US7713494B2 (en) 2005-09-15 2010-05-11 Kawasaki Jukogyo Kabushiki Kaisha Exhaust purification device
EP1772601A1 (en) * 2005-10-07 2007-04-11 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system of motorcycle and motorcycle including exhaust system
US7637349B2 (en) 2005-10-07 2009-12-29 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system of motorcycle and motorcycle including exhaust system
US7886710B2 (en) 2005-10-13 2011-02-15 Yamaha Hatsudoki Kabushiki Kaisha Oil filter unit and motorcycle including the oil filter unit
WO2009063602A1 (en) 2007-11-15 2009-05-22 Kawasaki Jukogyo Kabushiki Kaisha Exhaust gas purifying apparatus
US8398926B2 (en) 2007-11-15 2013-03-19 Kawasaki Jukogyo Kabushiki Kaisha Exhaust gas purifying apparatus
JP2015098828A (en) * 2013-11-19 2015-05-28 スズキ株式会社 Exhaust system for motorcycle
US11506104B2 (en) 2019-02-25 2022-11-22 Honda Motor Co., Ltd. Exhaust structure for saddle riding vehicle

Also Published As

Publication number Publication date
JPH0514085B2 (en) 1993-02-24

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