JPH04166494A - Exhaust device for outboard motor - Google Patents

Exhaust device for outboard motor

Info

Publication number
JPH04166494A
JPH04166494A JP2290831A JP29083190A JPH04166494A JP H04166494 A JPH04166494 A JP H04166494A JP 2290831 A JP2290831 A JP 2290831A JP 29083190 A JP29083190 A JP 29083190A JP H04166494 A JPH04166494 A JP H04166494A
Authority
JP
Japan
Prior art keywords
exhaust
passage
exhaust gas
sampling
plug
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
Application number
JP2290831A
Other languages
Japanese (ja)
Inventor
Hidehiko Yoshioka
義岡　英彦
Kimiaki Oda
小田　公昭
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.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP2290831A priority Critical patent/JPH04166494A/en
Publication of JPH04166494A publication Critical patent/JPH04166494A/en
Pending legal-status Critical Current

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
    • 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
    • F01N13/12—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 specially adapted for submerged exhausting
    • 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
    • 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
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

PURPOSE:To protect an analyzer and improve accuracy of analysis by opening the outer end of a sampling passage communicated with an exhaust passage on the outside face of an engine holder, and freely opening or closing the opening part with a plug. CONSTITUTION:A boss 19 extending over the wall 13 of an exhaust gas passage 14 and the outer circumferential wall 12 is integrally provided, a sampling passage 20 is penetratingly formed in the boss 19, the outer end of the sampling passage 20 is opened on the side face of an engine holder 10, and a plug 21 is fitted to this opening part to sealingly close. Consequently, for picking up sampling gas, the plug 21 is removed, and a sampling apparatus is connected to the opening part of the sampling passage 20 to pick up the exhaust gas. By this method, exhaust gas before flowing in an exhaust tube 6 can be picked up from the exhaust gas passage 14, and the sample gas containing no water can be obtained. Hereby, an analyzer can be protected and accuracy of analysis can be improved.

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） この発明は船外機の排気装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) This invention relates to an exhaust system for an outboard motor.

（従来の技術） 近時、海洋レジャーの興隆から船外機が多く用いられよ
うになっている。(Prior Art) In recent years, with the rise of marine leisure, outboard motors have come into widespread use.

現在、自動車や自動２輪車では、エンジンの排ガス中に
含まれる有害成分の含有量が規制され、その排ガス規制
の規格が定められているが、船外機はその規制の対象外
におかれている。Currently, the content of harmful components contained in the engine exhaust gas of automobiles and motorcycles is regulated, and standards have been established for the exhaust gas control, but outboard motors are not subject to these regulations. ing.

しかし、船外機もエンジンから燃焼ガスを排出するので
、環境保護の見地から排ガスの分析が行なえることが望
ましい。However, since outboard motors also emit combustion gases from their engines, it is desirable to be able to analyze exhaust gases from the standpoint of environmental protection.

自動車等においては、一般に排気管の終端部（テールパ
イプ）から排ガスのサンプルを採取し、分析を行なって
いる。In automobiles, exhaust gas samples are generally collected from the terminal end of the exhaust pipe (tail pipe) and analyzed.

（発明が解決しようとする課題） しかしながら船外機では、第３図および第４図に示すよ
うにエンジン１の排気ポート２．２から排出される排ガ
スがエキゾーストマニホールド３を通ってドライブシャ
フトハウジング４内に工ンジンホルダ５を介して垂下す
るエキゾーストチューブ６に入り、その下端からドライ
ブシャフトハウジング４およびその下部のギヤケース７
内を通り、プロペラ８の軸の周囲を通って水中へ排比さ
れるようになっているので、排気系の終端部、即ちプロ
ペラ８部分から分析用のサンプルガスを採取することは
事実上不可能である。(Problem to be Solved by the Invention) However, in an outboard motor, as shown in FIGS. 3 and 4, exhaust gas discharged from the exhaust port 2.2 of the engine 1 passes through the exhaust manifold 3 and into the drive shaft housing 4. The exhaust tube 6 that hangs down through the engine holder 5 enters the exhaust tube 6, and from its lower end is connected to the drive shaft housing 4 and the gear case 7 below it.
It is virtually impossible to collect sample gas for analysis from the end of the exhaust system, that is, from the propeller 8 part, as it passes through the inside of the exhaust system and passes around the shaft of the propeller 8 to be discharged into the water. It is.

また、サンプルガスはガスの組成が安定していることが
重要であり、しかも排ガス分析計の保護のためガス中に
水分を含まないことが必要である。Further, it is important that the sample gas has a stable gas composition, and furthermore, it is necessary that the gas does not contain moisture to protect the exhaust gas analyzer.

船外機でこのように水分を含まない排ガスはエキゾース
トチューブ６の下端からエキゾーストマニホールド３ま
での間を流れる部分までであり、エキゾーストチューブ
６の下端以降の排ガスはドライブシャフトハウジング４
内で水と接触する可能性があって採取不適となる。In an outboard motor, the exhaust gas that does not contain water flows from the lower end of the exhaust tube 6 to the exhaust manifold 3, and the exhaust gas after the lower end of the exhaust tube 6 flows through the drive shaft housing 4.
There is a possibility that it may come into contact with water inside the tank, making it unsuitable for collection.

しかし、エキゾーストチューブ６は第４図に示すように
エキゾーストチューブハウジング９内に格納されており
、しかもエキゾーストチューブ６とエキゾーストチュー
ブハウジング９との間には冷却水を含む排ガスが存在し
ているので、この部分から排ガスを直接採取することは
非常に困難である。However, the exhaust tube 6 is housed in the exhaust tube housing 9 as shown in FIG. 4, and exhaust gas containing cooling water exists between the exhaust tube 6 and the exhaust tube housing 9. It is very difficult to collect exhaust gas directly from this part.

この発明は、船外機の排ガスを水分を含まない状態で容
易に採取することができ、分析計の保護および分析精度
の向上をはかることができる船外機の排気装置を提供す
ることを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an outboard motor exhaust system that can easily collect outboard motor exhaust gas in a water-free state, protect an analyzer, and improve analysis accuracy. shall be.

〔発明の構成〕[Structure of the invention]

（課題を解決するための手段） 上記目的を達成するためこの発明では、船外機のドライ
ブシャフトハウジングの上部におかれてエンジンを支持
しエンジンのエキゾーストマニホールド側とエキゾース
トチューブとをつなぐ排ガス通路を有するエンジンホル
ダに、前記排ガス通路に連通ずるサンプリング通路を設
け、このサンプリング通路の外端をエンジンホルダの外
側面に開口し、この開口部をプラグにより開閉自在とし
たことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides an exhaust gas passage that is placed in the upper part of the drive shaft housing of the outboard motor, supports the engine, and connects the exhaust manifold side of the engine and the exhaust tube. The engine holder is provided with a sampling passage communicating with the exhaust gas passage, the outer end of the sampling passage is opened on the outer surface of the engine holder, and this opening can be opened and closed by a plug.

（作用） サンプルガスを採取するには、プラグを外し、サンプリ
ング通路の開口部に採取器を接合して排ガスを採取すれ
ば、エキゾーストチューブに流入する前の水分を全く含
まない排ガスを採取することができる。採取後はサンプ
リング通路の開口部にプラグを嵌着すれば排気通路は密
封され、通常の運転ができる。(Function) To collect sample gas, remove the plug, connect the sampler to the opening of the sampling passage, and collect the exhaust gas. This will allow you to collect the exhaust gas that does not contain any moisture before it flows into the exhaust tube. I can do it. After sampling, the exhaust passage is sealed by fitting a plug into the opening of the sampling passage, allowing normal operation.

（実施例） 以下この発明の実施例を第１図および第２図により第３
図および第４図と共通する部分には同一符号を付して説
明する。(Example) Examples of the present invention will be described below with reference to FIGS. 1 and 2.
The same reference numerals are given to the parts common to those in the figure and FIG. 4 for explanation.

第１図はこの発明におけるエンジンホルダ１０を含む要
部の断面を示し、第２図は第１図の平面を示している。FIG. 1 shows a cross section of a main part including an engine holder 10 according to the present invention, and FIG. 2 shows a plan view of FIG. 1.

このエンジンホルダ１０は、底板１１の周囲をとり囲む
ように立設された壁１２と、上部側にエンジン１のエキ
ゾーストマニホールド３が、下部側にエキゾーストチュ
ーブ６が接続されてこれらをつなぐよう底板１１から立
上る壁１３で形成された排ガス通路１４とを有し、これ
ら壁１２．１３の間の空間部１５には冷却水が入り、底
板１１の孔１６．１６・・・を通じドライブシャフトハ
ウジング４とエキゾーストチューブハウジング９との間
の冷却水室１７に連通されている。This engine holder 10 includes a wall 12 that stands upright to surround a bottom plate 11, an exhaust manifold 3 of the engine 1 is connected to the upper side, and an exhaust tube 6 is connected to the lower side. Cooling water enters the space 15 between these walls 12, 13 and passes through the holes 16, 16 in the bottom plate 11 to the drive shaft housing 4. The exhaust tube housing 9 is connected to a cooling water chamber 17 between the exhaust tube housing 9 and the exhaust tube housing 9.

前記エンジンホルダ１０の上面−側にはエンジンマウン
ト保持部１８．１８が設けられている。An engine mount holding portion 18.18 is provided on the upper side of the engine holder 10.

前記排ガス通路１４の壁１３と外周の壁１２にかけてポ
ス１９が一体的に設けられ、このボス１９内にサンプリ
ング通路２０が貫通して形成され、このサンプリング通
路２０の外端はエンジンホルダ１０の側面に開口されて
おり、この開口部にプラグ２１がネジ込みにより嵌着さ
れて封止するようになっている。A post 19 is integrally provided between the wall 13 of the exhaust gas passage 14 and the outer peripheral wall 12, and a sampling passage 20 is formed passing through the boss 19, and the outer end of the sampling passage 20 is connected to the side surface of the engine holder 10. A plug 21 is screwed into this opening to seal it.

従ってサンプルガスを採取するには、プラグ２１を外し
、サンプリング通路２０の開口部に採取器を接合して排
ガスを採取すれば、エキゾーストチューブ６に流入する
前の排ガスを排ガス通路１４から採取することができ、
水分を含まないサンプルガスを得ることができる。採取
後はサンプリング通路２０の開口部にプラグ２１を嵌着
すれば、排ガス通路１４は閉止され、通常の運転に支障
はない。Therefore, to collect the sample gas, remove the plug 21 and connect the sampler to the opening of the sampling passage 20 to collect the exhaust gas, and the exhaust gas before flowing into the exhaust tube 6 can be collected from the exhaust gas passage 14. is possible,
A sample gas that does not contain water can be obtained. After sampling, by fitting the plug 21 into the opening of the sampling passage 20, the exhaust gas passage 14 is closed, and normal operation is not hindered.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、船外機のエキゾースト
チューブに入る前の排ガスを採取することができるので
、水分を全く含まない乾いた排ガスを採取することがで
きるので、分析計を傷めることがないと共に分析精度を
高めることができる。またプラグを外すだけで簡単に排
ガスをサンプリングすることができるので取扱い操作が
容易であり、構造も簡単であるからコスト的にも有利で
ある。As described above, according to the present invention, it is possible to collect the exhaust gas before it enters the exhaust tube of the outboard motor, so it is possible to collect dry exhaust gas that does not contain any moisture, so there is no need to damage the analyzer. It is possible to improve the accuracy of analysis without any problems. Furthermore, since exhaust gas can be sampled simply by removing the plug, handling is easy, and the structure is simple, which is advantageous in terms of cost.

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

第１図はこの発明に係る船外機の排気装置の一実施例を
示す主要部の断面図、第２図は第１図の■−■面に沿う
平面図、第３図はこの発明に適用する船外機の側面図、
第４図は船外機の正面図である。 １・・・エンジン、３・・・エキゾーストマニホールド
、４・・・ドライブシャフトハウジング、６・・・エキ
ゾーストチューブ、７・・・ギヤケース、８・・・プロ
ペラ、１０・・・エンジンホルダ、１４・・・排ガス通
路、２０・・・サンプリング通路、２１・・・プラグ。 出願人代理人　　波　多　野　　　　久第３図 ｄ 第４図FIG. 1 is a cross-sectional view of the main parts of an embodiment of an exhaust system for an outboard motor according to the present invention, FIG. 2 is a plan view taken along the plane ■-■ of FIG. 1, and FIG. Side view of the applicable outboard motor,
FIG. 4 is a front view of the outboard motor. DESCRIPTION OF SYMBOLS 1... Engine, 3... Exhaust manifold, 4... Drive shaft housing, 6... Exhaust tube, 7... Gear case, 8... Propeller, 10... Engine holder, 14... - Exhaust gas passage, 20... Sampling passage, 21... Plug. Applicant's agent Hisashi Hatano Figure 3d Figure 4

Claims (1)

【特許請求の範囲】[Claims] エンジンの排気をドライブシャフトハウジング内のエキ
ゾーストチューブを通じプロペラ部分から水中に排出す
る排気系を有する船外機において、ドライブシャフトハ
ウジングの上部におかれてエンジンを支持しエンジンの
エキゾーストマニホールド側とエキゾーストチューブと
をつなぐ排ガス通路を有するエンジンホルダに、前記排
ガス通路に連通するサンプリング通路を設け、このサン
プリング通路の外端をエンジンホルダの外側面に開口し
、この開口部をプラグにより開閉自在としたことを特徴
とする船外機の排気装置。In outboard motors that have an exhaust system that discharges the engine's exhaust gas from the propeller section into the water through the exhaust tube in the drive shaft housing, the engine is supported at the top of the drive shaft housing, and the engine is connected to the exhaust manifold side and the exhaust tube. A sampling passage communicating with the exhaust gas passage is provided in an engine holder having an exhaust gas passage connecting the exhaust gas passage, the outer end of the sampling passage is opened on the outer surface of the engine holder, and this opening can be opened and closed by a plug. Exhaust system for outboard motors.
JP2290831A 1990-10-30 1990-10-30 Exhaust device for outboard motor Pending JPH04166494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2290831A JPH04166494A (en) 1990-10-30 1990-10-30 Exhaust device for outboard motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2290831A JPH04166494A (en) 1990-10-30 1990-10-30 Exhaust device for outboard motor

Publications (1)

Publication Number Publication Date
JPH04166494A true JPH04166494A (en) 1992-06-12

Family

ID=17761051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2290831A Pending JPH04166494A (en) 1990-10-30 1990-10-30 Exhaust device for outboard motor

Country Status (1)

Country Link
JP (1) JPH04166494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5560247A (en) * 1992-09-16 1996-10-01 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas sampling device for outboard motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5560247A (en) * 1992-09-16 1996-10-01 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas sampling device for outboard motor

Similar Documents

Publication Publication Date Title
CN205786567U (en) A kind of waste gas collecting analytical equipment
JPH04166494A (en) Exhaust device for outboard motor
CA2114884A1 (en) Molten metal sampler
JP3311103B2 (en) Outboard exhaust gas sampling system
JPH04166495A (en) Exhaust device for outboard motor
JPS627036B2 (en)
JPH0547338U (en) Exhaust gas exhaust gas extraction device
JPH04121296A (en) Exhaust device for outboard motor
JPS603039Y2 (en) Exhaust gas extraction structure in outboard motors
CN208672396U (en) A kind of spray for dust suppression gas sampler
JPH04135998A (en) Exhaust device for outboard motor
CN208672597U (en) A kind of stationary gas detector with probe protective cover
CN217112230U (en) Nitrogen oxygen sensor with waterproof function
KR200215636Y1 (en) portable apparatus for picking gas sample
CN217931001U (en) Comprehensive sampling instrument for atmospheric particulate matters
CN218180020U (en) Small-size environmental monitoring equipment with explosion-proof function
KR100592844B1 (en) Picking device of insulating oil for gas analysis
CN213397849U (en) Atmospheric pollution detects sampling device
CN208380659U (en) A kind of engine breather pipe structure
CN214748883U (en) Environmental chamber test system for fuel cell vehicle
CN109163937B (en) Water sample collector for preventing soluble gas and water sample from being separated
CN207991896U (en) One kind closing air extractor from negative-pressure dense
CN219117436U (en) Feed fermentation box capable of sampling
JPH10197422A (en) Air-cooled moisture separator
CN212621728U (en) Quick detection device of furniture harmful substance