JPS5896116A - Secondary-air introducing device in autocycle - Google Patents
Secondary-air introducing device in autocycleInfo
- Publication number
- JPS5896116A JPS5896116A JP56191839A JP19183981A JPS5896116A JP S5896116 A JPS5896116 A JP S5896116A JP 56191839 A JP56191839 A JP 56191839A JP 19183981 A JP19183981 A JP 19183981A JP S5896116 A JPS5896116 A JP S5896116A
- Authority
- JP
- Japan
- Prior art keywords
- cylinders
- reed valve
- secondary air
- exhaust
- exhaust pipes
- 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.)
- Pending
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
- F01N3/34—Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
-
- 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
- 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
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving 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
Description
【発明の詳細な説明】
本発明は自動２輪車においてエンジンの排気管に排気の
空燃比を制御すべく二次空気を導入する装置に関する・
本願出願人は先にこの種装置として−例えば第１図示の
ように前後の車輪を有する車体の中間部に、−個と他側
との少くとも各２個のシリンダ＆ａを有するエンジン１
と、各シリンダａに連通して後方にのびる一個と他側と
の少くとも２本の排気管〇−とを備えると共に、各排気
管・に下流端近傍の排気浄化用Ｏ触媒症と、その上流側
にリード弁・を介して二次空気を導かれる二次空気導入
口ｔとを備える式のものを提案したが１この場合線リー
ド弁・は仝図示のように一側と他側との各２個のシリン
ダ１．＆に連る各２率の排気管Ｏ９・を各１組としてこ
れに共通の１個に備えられる式な一般としたもので、か
かるものでは各１組の２個のシリンダ＆、＆は点火時期
の位相のづれが１８０度であるため％咳１個のり−ド弁
・に各排気管Ｏ−から作用するの負圧部分が有効に作用
せずこれを換言すれば排気脈動による二次空気の導入が
良好に行われない不都合を伴う・
本発明はか−る不都合のｄい装置を得ることをその目的
としたもので１前後の車輪を有する車体の中間部に１−
側と他側との少くとも各２個のシリンダを有するエンジ
ンと、各シリンダに連通して後方にのびる一側と他側と
の少くとも各２本の排気管とを設けると共に各排気管に
下流端近傍の排気浄化用の触媒と、その上流側にリード
弁を介して二次空気を導かれる二次空気導入口とを備え
る式のものにおいて、点火時期が等間隔の該シリンダの
各２個に連る骸排気管の各２本を各１組としてこれに該
リード弁を各共通の１個に備えて成る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for introducing secondary air into the exhaust pipe of an engine in a two-wheeled motor vehicle in order to control the air-fuel ratio of exhaust gas. 1. As shown in the figure, an engine 1 having at least two cylinders &a, one on the other side and one on the other side, in the middle part of a vehicle body having front and rear wheels.
and at least two exhaust pipes, one extending rearward in communication with each cylinder a and the other, and an O catalyst for exhaust purification near the downstream end of each exhaust pipe; We have proposed a type that has a secondary air inlet t on the upstream side through which secondary air is introduced via a reed valve. In this case, the line reed valve has two ports on one side and the other as shown in the figure. Each two cylinders 1. Each pair of two-rate exhaust pipes O9 leading to & is provided in a common one, and in such a type, each pair of two cylinders &, Since the phase difference between the timings is 180 degrees, the negative pressure part that acts from each exhaust pipe O- on the %cough 1 board valve does not work effectively, and in other words, the secondary air due to exhaust pulsation does not work effectively. The purpose of the present invention is to obtain a device that avoids such inconvenience, and is equipped with a device installed in the middle of a vehicle body having front and rear wheels.
An engine having at least two cylinders each on one side and the other side, and at least two exhaust pipes on each side of one side and the other side that communicate with each cylinder and extend rearward, and each exhaust pipe has at least two cylinders on each side. In a type equipped with a catalyst for exhaust purification near the downstream end and a secondary air inlet port through which secondary air is introduced via a reed valve on the upstream side, each of the two cylinders has ignition timings equally spaced. Each set includes two skeleton exhaust pipes connected to each other, and a common reed valve is provided for each set.
本発明実施の１例を別紙図面に付説明する。An example of implementing the present invention will be explained with reference to the attached drawings.
第５ＷＪ乃至第５図はその１例を示すもので、（１）は
車体を示し、咳車体（１）は前後の車輪（２）（２）と
その中間部のエンジン（３）とその上側の燃料タンク＋
４１とを備えて全体として自動２輪車に構成されるよう
にした。5WJ to Figure 5 show one example, where (1) shows the vehicle body, the vehicle body (1) is the front and rear wheels (2) (2), the engine (3) in the middle part, and the upper side thereof. fuel tank +
41, so that the entire vehicle is configured as a two-wheeled motor vehicle.
該エンジン（３）は第４図に明示するように一個と他側
との少くとも各２ＩＩのシリンダ（５）（５）を備える
と共に各シリンダ（５）（５）に連通して後方にのびる
一側と他側との少くとも各２本の排気管（６） １６＋
を備え、更に各排気管（６）はその下流端近傍に排気浄
化用の触媒（７）と、その上流側に位置して二次空気導
入口（８）とを備え、これに各リード弁（９）【介して
二次空気が導かれるようにした・更に説明すれば各二次
空気導入口（８Ｊはこれに連る各二次空気導入ＩＱＩに
おいて各シリンダ（５）から後方にのびる各吸気管収り
の上流端のエアクリーナα４内に連ると共にこれに各リ
ード弁（９）が介入されるようにし、更にその上流伽に
共通１個の制御弁ａｌを伽え、これは排気ガスセンサＩ
の出力信号により制御回路（ＵＳを介して開閉制御され
るものとする・この場合腋リード弁（男は共通１個のリ
ード弁ボックス（？＆）内に左右１対に並設される叡式
とするもので、例えば第Ｓ図に明示の通りである。尚４
！１．ｖ＆気管収υには各気化ｔ１αＱを備える。Said engine (3) comprises at least two cylinders (5) (5), one on the other side and extends rearward in communication with each cylinder (5) (5) as clearly shown in FIG. At least two exhaust pipes (6) on one side and the other side 16+
Furthermore, each exhaust pipe (6) is equipped with an exhaust purification catalyst (7) near its downstream end, and a secondary air inlet (8) located upstream thereof, and each reed valve is connected to this. (9) [Secondary air is guided through the secondary air inlets (8J is the number of ports extending rearward from each cylinder (5) in each secondary air inlet IQI connected to this). Each reed valve (9) is connected to the air cleaner α4 at the upstream end of the intake pipe housing, and each reed valve (9) is inserted therein, and one common control valve al is installed at the upstream end of the air cleaner α4, which is connected to the exhaust gas sensor. I
Opening/closing is controlled via the control circuit (US) by the output signal of For example, as shown in Figure S.Note 4
! 1. v & tracheal constriction υ is provided with each vaporization t1αQ.
以上は先に提案したものと特に１４らないが一苓発胸に
よればシリンダ（５）が４個の場合、点火時期が等間隔
の各２個を各１組として撰択し１番２個に連る各２率の
排気管（６） （６）に誼リード弁（９）の１個を組合
せるようにした。更に説明すれば箋シリンダ（５）の４
個が例えば１ｉｌｔ’香、２番。The above is different from what was proposed earlier, but according to Issei Hatsubo, when there are four cylinders (5), two cylinders with equally spaced ignition timings are selected as one set, and one set is 1st 2nd. One reed valve (9) is combined with each two-rate exhaust pipe (6) (6) connected to the exhaust pipe (6). To explain further, note cylinder (5) 4
For example, number 1ilt'ka, number 2.
５番の順序で点大する場合１番と２番及び４香とｓＩＩ
とを各１組とし、これに対応して該リード弁（９）の各
１個を備えるようＫした。即ち１番と２蚤とのシリンダ
（５） （５）に連る２本の排気管（６）（６）からの
びる２本の二次空気導入管（ＩＩ ａｌを互に合流して
一方のリード弁（９）に導かせると共に５書と４１１と
の２個のシリンダ（５１（５）につき略同様に２本の二
次空気導入管ＱＱ （１Ｇを互に合流して他方のリード
弁（９）に導かせるようにした。この場合各２本の排気
管（６）（６）から各１個のリード弁（９）に作用する
圧力の波は例えば第６図示の通りであり、一方の負圧が
他方Ｏ正圧で打消されるようなことがなく、かくて皺リ
ード弁（９）を介して二次空気を導く作用を円滑且確実
にする。If you increase the points in the order of number 5, number 1 and number 2, 4 incense and sII
and one set each, and one reed valve (9) was provided correspondingly. In other words, the two secondary air introduction pipes (II al) extending from the two exhaust pipes (6) (6) connected to the cylinders (5) (5) of No. 1 and No. 2 flea (II) are merged into one side. At the same time, the two secondary air introduction pipes QQ (1G) are connected to the other reed valve ( 9).In this case, the pressure waves acting on each reed valve (9) from each of the two exhaust pipes (6) (6) are as shown in Fig. 6, for example. The negative pressure of O is not canceled out by the positive pressure of O on the other hand, thus making the function of guiding the secondary air through the wrinkle reed valve (9) smooth and reliable.
このように本発明によるときはり−ド弁を点火時期が等
ｌ＃Ｉ隔のシリンダの２個に連る排気管Ｏ２苓を各１組
としてこれに各１個を備えるもので、各２率の排気管内
の圧力が相互に打消すようなことがなく、該リード弁を
介して二次空気を巴滑且確実に導入させ得られる効果を
有するＯIn this way, according to the present invention, one set of exhaust pipe O2 valves connected to two cylinders with equal ignition timing intervals of l#I is provided with one valve for each cylinder, and each set has one valve for each cylinder. The pressure inside the exhaust pipe of the O
第１図は従来例の系統ｌｌＡ図１第２図はその作動の説
明ｌｉＡ図、第３図は半発明装置を備えた自動２輪車０
１例ｏ１１ｍｍ−第４図はその要部の平ＩｆｉｗＪ、第
１ＳＷＪはその一部の拡大した截断平面閣、第６図はそ
の作動特性０１１図である。
（１）・・・車 体
（２ス２）・・車 輪
（３）・・・エンジン
（５Ｘ５）・・シ゛リンダ
（６Ｘ６）・―排気管
（７）・・・触 媒
（８Ｘ８）・−二次空気導入口
（９）・−・リード弁Fig. 1 shows a conventional system llA Fig. 1 Fig. 2 shows an explanation of its operation, and Fig. 3 shows a two-wheeled motor vehicle equipped with a semi-inventive device.
1 example o11mm - Figure 4 shows the main part of the plane IfiwJ, the 1st SWJ shows an enlarged cut plane of a part of it, and Figure 6 shows its operating characteristics. (1)...Car body (2 seats 2)...Wheels (3)...Engine (5X5)...Cylinder (6X6)--Exhaust pipe (7)...Catalyst (8X8)-- Secondary air inlet (9) --- Reed valve
Claims (1)
くとも各２個のシリンダを有するエンジンと、各シリン
ダに連通して後方にのびる一側と他側との少くとも各２
率の排気管とを設けると共に各排気管に下流端近傍の排
気浄化用の触媒と、その上流側にリード弁を介して二次
空気を導かれる二次空気導入口とを備える式のものにお
いて、点火時期が等間隔の該シリンダの各２個に連る該
排気管の各２本を各１組としてこれに該リード弁を各共
通の１個に備えて成る自動２輪車における二次空気導入
装置。An engine having at least two cylinders on each side, one on the minus side and one on the other side, in the middle part of a vehicle body having front and rear wheels, and at least two cylinders on one side and the other side, communicating with each cylinder and extending rearward.
In a type in which each exhaust pipe is provided with a catalyst for purifying exhaust gas near the downstream end, and a secondary air inlet port through which secondary air is introduced via a reed valve on the upstream side thereof. A secondary system in a two-wheeled motor vehicle comprising a set of two exhaust pipes connected to two cylinders with equal ignition timing intervals, and a reed valve provided in each common set. Air introduction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56191839A JPS5896116A (en) | 1981-12-01 | 1981-12-01 | Secondary-air introducing device in autocycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56191839A JPS5896116A (en) | 1981-12-01 | 1981-12-01 | Secondary-air introducing device in autocycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5896116A true JPS5896116A (en) | 1983-06-08 |
Family
ID=16281367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56191839A Pending JPS5896116A (en) | 1981-12-01 | 1981-12-01 | Secondary-air introducing device in autocycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5896116A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4677941A (en) * | 1984-08-07 | 1987-07-07 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Electrical cooling fan |
| EP1767756A1 (en) * | 2005-09-27 | 2007-03-28 | Ford Global Technologies, LLC | Arrangement in a secondary air system for a combustion engine |
-
1981
- 1981-12-01 JP JP56191839A patent/JPS5896116A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4677941A (en) * | 1984-08-07 | 1987-07-07 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Electrical cooling fan |
| EP1767756A1 (en) * | 2005-09-27 | 2007-03-28 | Ford Global Technologies, LLC | Arrangement in a secondary air system for a combustion engine |
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