JPS6025889A - Exhaust apparatus for outboard motor - Google Patents
Exhaust apparatus for outboard motorInfo
- Publication number
- JPS6025889A JPS6025889A JP58133609A JP13360983A JPS6025889A JP S6025889 A JPS6025889 A JP S6025889A JP 58133609 A JP58133609 A JP 58133609A JP 13360983 A JP13360983 A JP 13360983A JP S6025889 A JPS6025889 A JP S6025889A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- exhaust
- expansion chamber
- chamber
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 230000001788 irregular Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000001816 cooling Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000001743 silencing effect Effects 0.000 description 3
- 230000003042 antagnostic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
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
- 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)
- Exhaust Silencers (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、船外機の排気装置に関する。[Detailed description of the invention] The present invention relates to an exhaust system for an outboard motor.
本出願人は、特願昭５６−２５２８２号に棒材した明細
書および図面において、「主排出口を介して外部に連通
ずる膨張室をケーシング内に形成し、エンジンの排気通
路に連通ずる排気管を膨張室に開口し、排気管のエンジ
ン側の中間側壁部に膨張室に開口する圧抜き孔を設ける
とともに、主排出口より上方レベルに副排出口を開口し
、Ｗ張室と副排出口とを水中室を介して連通してなる船
外機の排気装置」をすでに提案している。In the specification and drawings published in Japanese Patent Application No. 56-25282, the present applicant states that ``an expansion chamber is formed in the casing that communicates with the outside through a main exhaust port, and an exhaust gas that communicates with the exhaust passage of the engine. The pipe opens into the expansion chamber, and a pressure relief hole is provided in the middle side wall of the exhaust pipe on the engine side to open into the expansion chamber.A sub-exhaust port is opened at a level above the main exhaust port, and the W expansion chamber and the sub-exhaust are connected. We have already proposed an outboard motor exhaust system that communicates with the outlet via an underwater chamber.
上記すでに提案している排気装置によれば、排気管の開
口が水没するエンジンの低速低負荷運転域において、エ
ンジンの排気は、圧抜き孔から膨張室、水中室を経て副
排出口から排出され、エンジンの排気通路における排気
圧の上昇を防止し、その不整燃焼を防止することが可能
となる。また、エンジンの排気は、膨張室を通過すると
ともに、水中室を通過することにより、それぞれ広範な
周波数域での消音を施される。According to the exhaust system already proposed above, in the low-speed, low-load operating range of the engine where the exhaust pipe opening is submerged in water, the engine exhaust gas is discharged from the sub-exhaust port through the pressure relief hole, the expansion chamber, and the submerged chamber. , it is possible to prevent an increase in exhaust pressure in the exhaust passage of the engine and prevent irregular combustion. In addition, the exhaust gas from the engine passes through the expansion chamber and the underwater chamber, thereby being muted in a wide frequency range.
しかしながら、上記すでに提案している抽気装置にあっ
ては、エンジンの低速低負荷運転域において特有な所定
周波数域での消音効果を得ることができない。However, the previously proposed air bleed devices cannot achieve a noise reduction effect in a specific frequency range that is unique to the low-speed, low-load operating range of the engine.
本発明は、主排気管の開口が水没するエンジンの低速低
負荷運転域において、エンジンの排気圧の」二昇による
不整燃焼を防止し、かつ広範な周波数域での消音を図る
とともに、特定の周波数域での消音を図ることを目的と
する。The present invention prevents irregular combustion due to a rise in engine exhaust pressure in the low-speed, low-load operating range of the engine where the opening of the main exhaust pipe is submerged in water, and also aims to muffle noise in a wide frequency range. The purpose is to mute sound in the frequency range.
上記目的を達成するために、本発明に係る船外機の排気
装置は、エンジンの排気通路に連通ずる副排気管を膨張
室の主排気管の開口位置より上方レベルに開口するとと
もに、主排出口より上方レベルに副排出口を開口し、膨
張室と副排出口とを水中室を介して連通ずるようにした
ものである。In order to achieve the above object, an outboard motor exhaust system according to the present invention opens a sub-exhaust pipe communicating with an engine exhaust passage at a level above the opening position of the main exhaust pipe of the expansion chamber, and A sub-discharge port is opened at a level above the outlet, and the expansion chamber and the sub-discharge port are communicated through an underwater chamber.
以下、本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例が適用されてなる船外機１０
の要部を破断して示す側面図である。船外機１０は、推
進ユニッ１− ｉ ｔの上部にエンジン１２を搭載して
いる。エンジン１２の出力は、ドライブ軸１３を介して
プロペラ軸１４に伝達され、プロペラ軸１４に直結して
いるプロペラ１５を駆動可能とする。エンジン１２は水
冷エンジンであり、ドライブ軸１３によって駆動される
水ポンプ１６は、外水取入口１７から取入れた外水をエ
ンジン１２に圧送している。なお、エンジン１２を冷却
した後の冷却水は、推進ユニット１１のケーシングＪ８
内に排出可能とされている。FIG. 1 shows an outboard motor 10 to which an embodiment of the present invention is applied.
FIG. The outboard motor 10 has an engine 12 mounted on top of a propulsion unit 1-it. The output of the engine 12 is transmitted to a propeller shaft 14 via a drive shaft 13, and is capable of driving a propeller 15 directly connected to the propeller shaft 14. The engine 12 is a water-cooled engine, and a water pump 16 driven by a drive shaft 13 pumps outside water taken in from an outside water intake port 17 to the engine 12. Note that the cooling water after cooling the engine 12 is supplied to the casing J8 of the propulsion unit 11.
It is said that it can be discharged inside.
上記ケーシング１８は、外壁１８Ａの内部に間隔をおい
て略筒状の内壁１８Ｂを有し、内壁１８Ｂの内部に両端
が広く開口した筒体１９を保持している。筒体１９はそ
の内部に膨張室２０を画成している。膨張室２０は、プ
ロペラ１５のボス部１５Ａに形成される主排出口２１を
介して外部の水中に連通している。The casing 18 has a generally cylindrical inner wall 18B spaced apart from an outer wall 18A, and holds a cylindrical body 19 with wide openings at both ends inside the inner wall 18B. The cylinder 19 defines an expansion chamber 20 therein. The expansion chamber 20 communicates with the outside water via a main discharge port 21 formed in the boss portion 15A of the propeller 15.
上記膨張室２０には、エンジン１２の排気通路２２に連
通する主排気管２３が開口している。主排気管２３は、
エンジン１２の高速高負荷域において、排気管内に生ず
る圧力波を利用して、エンジン１２の給気比、給気効率
を向上させ、エンジン１２側力の向上を可能とするよう
な長さ、断面形状を与えられている。なお、主排気管２
３は、エンジン１２の低速低負荷運転域においては、第
１図に示すように、主排出口２１から膨張室２０内に侵
入する水中に水没する。A main exhaust pipe 23 that communicates with an exhaust passage 22 of the engine 12 opens into the expansion chamber 20 . The main exhaust pipe 23 is
The length and cross section are designed to improve the air supply ratio and air intake efficiency of the engine 12 by utilizing pressure waves generated in the exhaust pipe in the high speed and high load range of the engine 12, and to improve the side force of the engine 12. given shape. In addition, main exhaust pipe 2
3 is submerged in water entering the expansion chamber 20 from the main discharge port 21, as shown in FIG.
また、筒体１９は、１膨張室２０に隣接する水中室２４
をも画成している。水中室２４は、その上方部において
膨張室２０と連通ずるとともに、その底部側に設けられ
ている連通口２５を介して、ケーシング１８の内壁１８
Ｂと筒体１９との間に画成される水中室２６に連通して
いる。水中室２６は、開口２７を介して、ケーシング１
８の外壁１８Ａと内壁１８Ｂとの間に画成される外室２
８に連通されている。外室２８は、外壁１８Ａの上部、
したがって主排出口２１の上方レベルに開口している副
排出口２９を介して外部空間に連通ずるとともに、外１
３１８Ａの下部に開口している排水口３０を介して、外
部の水中に連通している。Further, the cylinder body 19 is connected to an underwater chamber 24 adjacent to the first expansion chamber 20.
It also defines The underwater chamber 24 communicates with the expansion chamber 20 at its upper portion, and also communicates with the inner wall 18 of the casing 18 through a communication port 25 provided at its bottom side.
It communicates with an underwater chamber 26 defined between B and the cylindrical body 19. The underwater chamber 26 is connected to the casing 1 through the opening 27.
The outer chamber 2 defined between the outer wall 18A and the inner wall 18B of 8
It is connected to 8. The outer chamber 28 is the upper part of the outer wall 18A,
Therefore, it communicates with the outside space via the sub-discharge port 29 which opens at the upper level of the main discharge port 21, and
It communicates with the outside water through a drain port 30 that opens at the bottom of 318A.
したがって、膨張室２０と副排出口２９とは、水中室２
４．２６、外室２８を介して相互に連通している。Therefore, the expansion chamber 20 and the sub-discharge port 29 are connected to the underwater chamber 2.
4.26, communicating with each other via the outer chamber 28.
なお、上記水中室２４．２６には、エンジン１２を冷却
した後の冷却水が落下、滞留し、水中室２４．２６内の
水は、水中室２６の開口２７から外室２８側に溢出し、
ひいては排水口３０から外部に排出可能とされている。In addition, the cooling water after cooling the engine 12 falls and stays in the underwater chamber 24.26, and the water in the underwater chamber 24.26 overflows from the opening 27 of the underwater chamber 26 to the outer chamber 28 side. ,
Furthermore, it can be discharged to the outside from the drain port 30.
したがって、水中室２４．２６には、開口２７の高さレ
ベルが設定する常に一定量の水が滞留することとなる。Therefore, a certain amount of water always remains in the underwater chamber 24, 26, which is determined by the height level of the opening 27.
さらに、主排気管２３のエンジン１２側の中間部、した
がって主排気管２３の開口位置より上方レベルには、副
排気管３１が連通されている。Further, a sub-exhaust pipe 31 is communicated with an intermediate portion of the main exhaust pipe 23 on the side of the engine 12, that is, at a level above the opening position of the main exhaust pipe 23.
副排気管３１は、エンジン１２の低速低負荷運転域にお
いて、主排気管２３の開口が水没している場合に、エン
ジン１２の排気を膨張室２０内に排出し、エンジン１２
の排気通路２２における排気圧の上昇を防止し、その不
整燃焼を防止可能とする。The auxiliary exhaust pipe 31 discharges the exhaust gas from the engine 12 into the expansion chamber 20 when the opening of the main exhaust pipe 23 is submerged in water in the low-speed, low-load operating range of the engine 12.
This prevents an increase in exhaust pressure in the exhaust passage 22 of the engine, thereby making it possible to prevent irregular combustion.
また、副排気管３１は、その長さ、断面形状の選定によ
り、共鳴形の消音機能を果し、特定周波数域での消音を
施すことを可能とするとともに、副排気管３１内に生ず
る圧力波の利用によってエンジン１２の特定速度域にお
ける給気比、給気効率の向上を図ることを可能としてい
る。Furthermore, by selecting the length and cross-sectional shape of the sub-exhaust pipe 31, it is possible to perform a resonance-type noise muffling function, to perform noise reduction in a specific frequency range, and to reduce the pressure generated within the sub-exhaust pipe 31. By utilizing waves, it is possible to improve the air intake ratio and air intake efficiency in a specific speed range of the engine 12.
なお、上記排気管３１から膨張室２０に排出された排気
は、水中室２４．２６．外室２８を経て副排出口２９か
ら外部に排出可能とされる。Note that the exhaust gas discharged from the exhaust pipe 31 to the expansion chamber 20 is sent to the underwater chambers 24, 26, 26, 24, 26, 24, 26, 24, 26, 26, 24, 26, 26, 24, 26, 26, 26, 26, 24, 26, . . . It can be discharged to the outside through the outer chamber 28 and from the sub-exhaust port 29.
次に、」二記実施例の作用について説明する。Next, the operation of the second embodiment will be explained.
主排気ｔ゛２３の開口が水没するエンジン１２の低速低
負荷運転域において、エンジン１２の排気は、副排気管
３１から膨張室２０．水中室２４．２６を経て副排出口
２９から排出され、エンジン１２の排気通路２２におけ
る拮気圧の上昇を防止し、その不整燃焼を防止する。ま
た、エンジン１２の排気は、膨張室２０を通過するとと
もに、水中室２４．２６を通過することにより、それぞ
れ広範な周波数域での消音を施される。さらに、エンジ
ン１２の排気は、副排気管３１を通過することにより、
共鳴形の消音効果を得て、特定周波数域での消音を施さ
れる。また、この時、エンジン１２は、副排気管３１内
に生ずる圧力波の利用によってエンジン１２の特定な速
度域における給気比、給気効率の向上を図られる。In the low-speed, low-load operating range of the engine 12 in which the opening of the main exhaust pipe 23 is submerged in water, the exhaust gas of the engine 12 flows from the sub-exhaust pipe 31 to the expansion chamber 20. It is discharged from the sub-exhaust port 29 through the submerged chambers 24 and 26, thereby preventing an increase in the antagonistic pressure in the exhaust passage 22 of the engine 12 and thereby preventing irregular combustion. In addition, the exhaust gas from the engine 12 passes through the expansion chamber 20 and the underwater chambers 24 and 26, so that the exhaust gas is muted in a wide frequency range. Furthermore, the exhaust gas from the engine 12 passes through the auxiliary exhaust pipe 31, so that
A resonance-type sound deadening effect is obtained, and sound deadening is applied in a specific frequency range. Also, at this time, the engine 12 is able to improve the air intake ratio and air intake efficiency in a specific speed range of the engine 12 by utilizing the pressure waves generated within the auxiliary exhaust pipe 31.
また、エンジン１２の高速高負荷運転域において、エン
ジン１２のｔｅｌ気は、膨張室２ｏを経て主排出口２１
から排出され、膨張室２ｏを通過することによって広範
な周波数域での消音を施される。また、この時、エンジ
ン１２は、主排気管２３内に生ずる圧力波の利用により
、エンジン１２の給気比、給気効率の向上を図られる。In addition, in the high-speed, high-load operating range of the engine 12, the air from the engine 12 passes through the expansion chamber 2o to the main exhaust port 21.
The air is discharged from the air and passes through the expansion chamber 2o, where it is muted in a wide frequency range. Further, at this time, the engine 12 is able to improve the air intake ratio and air intake efficiency of the engine 12 by utilizing the pressure waves generated within the main exhaust pipe 23.
ここで、上記副排気管３１は、エンジン１２の低速低負
荷運転域における排気の排出を円滑化するために、エン
ジン１２の低速低負荷運転時に膨張室２０に侵入する水
面レベルより上方に位置することが好ましい。しかしな
がら、副排気管３１の開口がたとえ水没するものであっ
ても、副排気管３１の開口は主排気管２３の開口より上
方に位置するものであることから、排気はより水頭の小
なる副排気管３１の開口から膨張室２０に流出し、排気
が副排気管３１から排出されることによる前記各効果を
得ることが可能である。Here, the sub-exhaust pipe 31 is located above the level of water that enters the expansion chamber 20 during low-speed, low-load operation of the engine 12 in order to smoothly discharge exhaust gas in the low-speed, low-load operation range of the engine 12. It is preferable. However, even if the opening of the auxiliary exhaust pipe 31 is submerged in water, the opening of the auxiliary exhaust pipe 31 is located above the opening of the main exhaust pipe 23. It is possible to obtain the above-mentioned effects by causing the exhaust gas to flow into the expansion chamber 20 from the opening of the exhaust pipe 31 and being discharged from the sub-exhaust pipe 31.
なお、上記実施例は単一の副排気管３１を用いる場合に
ついて説明したが、本発明において長さ、断面形状等の
異なる複数の副排気管を並列的に配設するものとすれば
、各副排気管がそれぞれ独立に機能することから、複数
の異なる特定周波数域における消音効果を得るとともに
、エンジン１２の広い速度域における給気比、給気効率
の向」二を図ることが可能となる。Although the above embodiment describes the case where a single sub-exhaust pipe 31 is used, in the present invention, if a plurality of sub-exhaust pipes with different lengths, cross-sectional shapes, etc. are arranged in parallel, each Since the auxiliary exhaust pipes each function independently, it is possible to obtain a silencing effect in a plurality of different specific frequency ranges, and to improve the air intake ratio and air intake efficiency over a wide speed range of the engine 12. .
また、上記実施例においては、水中室２４．２６内に滞
留する水としてエンジン冷却後の冷却水を用い、開口２
７が規定する一定量の水を常に水中室２４．２６内に滞
留可能としたので、副排気管３１から膨張室２０に流出
した排気は、常に水中室２４．２６の水中を通過し、そ
れによる消音効果を得ることが可能となっている。しか
しながら、本発明においては、水中室２４．２６の下部
と膨張室２０とを連通し、膨張室２０内に流入した水を
水中室２４．２６に供給するものとしてもよい。Further, in the above embodiment, cooling water after cooling the engine is used as the water staying in the underwater chamber 24.26, and the opening 2
Since a certain amount of water stipulated by 7 can always stay in the submersible chamber 24.26, the exhaust gas flowing out from the sub-exhaust pipe 31 to the expansion chamber 20 always passes through the water in the submersible chamber 24.26. It is possible to obtain a sound silencing effect. However, in the present invention, the lower part of the underwater chamber 24.26 and the expansion chamber 20 may be communicated with each other, and the water flowing into the expansion chamber 20 may be supplied to the underwater chamber 24.26.
また、上記実施例は、ケーシング１８（７）内部に、ケ
ーシング１８の外壁１８Ａ、内壁１８Ｂとは別体の筒体
１９を用いて、膨張室２０を形成する場合について説明
した。しかしながら、本発明においては、ケーシング１
８の内部に、ケーシング１８そのものの壁部によって膨
張室を形成するものとしてもよい。Further, in the above embodiment, the expansion chamber 20 is formed inside the casing 18 (7) by using the cylindrical body 19 that is separate from the outer wall 18A and inner wall 18B of the casing 18. However, in the present invention, the casing 1
An expansion chamber may be formed inside the casing 8 by the wall of the casing 18 itself.
以上のように、本発明に係る船外機の排気装置は、エン
ジンの排気通路に連通ずる副排気管を膨張室の主排気管
の開口位置より上方レベルに開口するとともに、主排出
口より上方レベルに副排出口を開口し、膨張室と副排出
口とを水中室を介して連通したものである。したがって
、主排出管の開口が水没するエンジンの低速低負荷運転
域において、エンジンの排気は副排気管から膨張室、水
中室を経て副排出口から排出され、エンジンの排気通路
における排気圧の上昇を防止し、その不整燃焼を防止す
ることが可能となる。また、エンジンの排気は、膨張室
を通過するとともに、水中室を通過することにより、そ
れぞれ広範な周波数域での消音を施される。さらに、エ
ンジンの排気は、副排気管を通過することにより、共鳴
形の消音効果を得て特定の周波数域での消音をも施され
る。As described above, in the outboard motor exhaust system according to the present invention, the auxiliary exhaust pipe communicating with the engine exhaust passage is opened at a level above the opening position of the main exhaust pipe of the expansion chamber, and at a level above the main exhaust port. A sub-discharge port is opened at the level, and the expansion chamber and sub-discharge port are communicated through an underwater chamber. Therefore, in the low-speed, low-load operating range of the engine where the opening of the main exhaust pipe is submerged in water, the engine exhaust gas is discharged from the auxiliary exhaust pipe through the expansion chamber, the underwater chamber, and the auxiliary exhaust port, increasing the exhaust pressure in the engine exhaust passage. This makes it possible to prevent irregular combustion. In addition, the exhaust gas from the engine passes through the expansion chamber and the underwater chamber, thereby being muted in a wide frequency range. Furthermore, by passing through the sub-exhaust pipe, the engine exhaust gas obtains a resonance-type silencing effect and is also subjected to silencing in a specific frequency range.
第１図は本発明の一実旅例が適用されてなる船外機の要
部を破断して示す側面図である。
１０・・・船外機、１２・・・エンジン、１８・・・ケ
ーシング、２０・・・膨張室、２１・・・主排出口、２
２・・・排気通路、２３・・・主排気管、２４．２６・
・・水中室、２９・・・副排出口、３１・・・副排気管
。
代理人 弁理士 塩 川 修 拍FIG. 1 is a side view, cut away, of essential parts of an outboard motor to which an example of the present invention is applied. DESCRIPTION OF SYMBOLS 10... Outboard motor, 12... Engine, 18... Casing, 20... Expansion chamber, 21... Main discharge port, 2
2... Exhaust passage, 23... Main exhaust pipe, 24.26.
... Submersible chamber, 29... Sub-exhaust port, 31... Sub-exhaust pipe. Agent Patent Attorney Osamu Shiokawa
Claims (1)
ング内に形成し、エンジンの排気通粋−ｐ連通する主排
出管を膨張室に開口してなる船外機の排気装置において
、エンジンの排気通路に連通ずる副排気管を膨張室の主
排気管の開口位置より上方レベルに開口するとともに、
主排出口より上方レベルに副排出口を開口し、膨張室と
副排出口とを水中室を介して連通したことを特徴とする
船外機の排気装置。(1) In an exhaust system for an outboard motor, an expansion chamber communicating with the outside via a main exhaust port is formed in the casing, and a main exhaust pipe communicating with the exhaust gas of the engine is opened into the expansion chamber, A sub-exhaust pipe communicating with the exhaust passage of the engine is opened at a level above the opening position of the main exhaust pipe of the expansion chamber, and
An exhaust system for an outboard motor, characterized in that a sub-discharge port is opened at a level above the main discharge port, and an expansion chamber and the sub-discharge port are communicated through an underwater chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58133609A JPS6025889A (en) | 1983-07-23 | 1983-07-23 | Exhaust apparatus for outboard motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58133609A JPS6025889A (en) | 1983-07-23 | 1983-07-23 | Exhaust apparatus for outboard motor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4334897A Division JPH05238484A (en) | 1992-11-24 | 1992-11-24 | Exhaust device for outboard motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6025889A true JPS6025889A (en) | 1985-02-08 |
| JPH0411436B2 JPH0411436B2 (en) | 1992-02-28 |
Family
ID=15108800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58133609A Granted JPS6025889A (en) | 1983-07-23 | 1983-07-23 | Exhaust apparatus for outboard motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0939892A (en) * | 1995-07-28 | 1997-02-10 | K B Shokuhin Kk | Water jet propulsion machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57140293A (en) * | 1981-02-23 | 1982-08-30 | Sanshin Ind Co Ltd | Exhausting noise silencing structure for outboard engine |
-
1983
- 1983-07-23 JP JP58133609A patent/JPS6025889A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57140293A (en) * | 1981-02-23 | 1982-08-30 | Sanshin Ind Co Ltd | Exhausting noise silencing structure for outboard engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0939892A (en) * | 1995-07-28 | 1997-02-10 | K B Shokuhin Kk | Water jet propulsion machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0411436B2 (en) | 1992-02-28 |
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