JPS603039Y2 - Exhaust gas extraction structure in outboard motors - Google Patents
Exhaust gas extraction structure in outboard motorsInfo
- Publication number
- JPS603039Y2 JPS603039Y2 JP1978106970U JP10697078U JPS603039Y2 JP S603039 Y2 JPS603039 Y2 JP S603039Y2 JP 1978106970 U JP1978106970 U JP 1978106970U JP 10697078 U JP10697078 U JP 10697078U JP S603039 Y2 JPS603039 Y2 JP S603039Y2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- pipe
- exhaust
- extraction structure
- passage
- 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.)
- Expired
Links
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】 本考案は船外機における排気ガス取出構造に関する。[Detailed explanation of the idea] The present invention relates to an exhaust gas extraction structure for an outboard motor.
現在、船外機においては排気ガスに対する規制は行なわ
れていない。Currently, there are no regulations regarding exhaust gas for outboard motors.
しかし、自動車等で行なわれているように、出荷検査あ
るいは船検時に排気ガスチェックが船外機についても実
施されるようになった場合、空中排気型の船外機におけ
る排気孔は排気ガスを採取するのに適する構造になって
いないし、また、水中排気型の船外機にあっては特に排
気ガスの取出しが困難である。However, if exhaust gas checks are now carried out on outboard motors during shipping inspections or ship inspections, as is done on automobiles, etc., the exhaust vents of air-exhaust type outboard motors will The structure is not suitable for collecting exhaust gas, and it is especially difficult to extract exhaust gas from underwater exhaust type outboard motors.
本考案は上記事情に鑑みてなされたもので、その目的と
するところは、エンジンの排気ガスを外部に排気する排
気ガス通路の途中に排気ガス通路の途中に排気ガスを採
取するための排気ガス取出口を設け、該排気ガス取出口
を水面上に位置するように取付けることにより、排気ガ
スのチェックを容易に行い得る船外機における排気ガス
取出構造を提供することにある。The present invention was developed in view of the above circumstances, and its purpose is to collect exhaust gas in the middle of the exhaust gas passage that exhausts engine exhaust gas to the outside. It is an object of the present invention to provide an exhaust gas extraction structure for an outboard motor that allows easy checking of exhaust gas by providing an exhaust gas extraction port and mounting the exhaust gas extraction port so as to be located above the water surface.
以下、図示の実施例を参照しながら本考案を詳細に説明
する。Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.
第１図は一般的な水中排気型船外機に本考案を適用した
もので、この種の船外機においてはエンジン部（図示せ
ず）からの排気ガスを排気ガス通路１を介してスクリュ
ー２の取付孔３から水中に排気している。Figure 1 shows an application of the present invention to a general submersible exhaust type outboard motor. It is exhausted into the water from the mounting hole 3 of 2.
この排気ガス通路１はエンジンカバー４内に収納された
エンジン部シリンダーに装着した排気マニホールド５お
よびこの排気マニホールド５に垂設され、かつ上記スク
リュー取付孔３に開口した排気管６とから構成されてい
る。This exhaust gas passage 1 is composed of an exhaust manifold 5 attached to an engine cylinder housed in an engine cover 4, and an exhaust pipe 6 that is vertically installed on the exhaust manifold 5 and that opens into the screw mounting hole 3. There is.
この排気管６は上記エンジンカバ−４下部のドライブシ
ャフトハウジング７内に配設され、該ドライブシャフト
ハウジング７下部のギヤケース８を通って上記スクリュ
ー取付孔３に達している。This exhaust pipe 6 is disposed within a drive shaft housing 7 below the engine cover 4, and reaches the screw mounting hole 3 through a gear case 8 below the drive shaft housing 7.
本考案はこのような船外機において、排気ガスのチェッ
クを行なうために通常の海水レベルがＬの位置にあるの
でこの海水レベルＬよりも少なく共上部に当たる上記排
気ガス通路１に排気ガス取出口９を設けたものである。In order to check the exhaust gas in such an outboard motor, the present invention provides an exhaust gas outlet in the exhaust gas passage 1, which is lower than the seawater level L and is located at the top of the seawater, since the normal seawater level is at the position L to check the exhaust gas. 9.
この排気ガス取出口９は排気管６の側面に孔６ａを形成
し、この孔に螺子溝１０を螺刻すると共にこの螺子溝１
０に螺合する栓１１を上記ドライブシャフトハウジング
７に穿けた孔７ａから螺入したものである。This exhaust gas outlet 9 is formed by forming a hole 6a on the side surface of the exhaust pipe 6, and a threaded groove 10 is threaded into this hole.
0 is screwed into the drive shaft housing 7 through the hole 7a.
１２はシール部材、１８は排気ガス浄化用触媒である。12 is a sealing member, and 18 is an exhaust gas purifying catalyst.
そして、排気ガスのチェックを行なう場合には栓１１を
抜くと共に孔６ａに排気ガス分析用導管を装着または差
し込んで排気ガスを採取するものである。When checking the exhaust gas, the plug 11 is removed and an exhaust gas analysis conduit is attached or inserted into the hole 6a to sample the exhaust gas.
また、排気ガス取出構造としては第２図および第３図の
ような排気ガス取出口１２．１３を設けても良い。Further, as the exhaust gas extraction structure, exhaust gas extraction ports 12 and 13 as shown in FIGS. 2 and 3 may be provided.
第２図に示す排気ガス取出口１２は排気ガス通路１の壁
面１ａに流体素子１４を設けたものである。The exhaust gas outlet 12 shown in FIG. 2 has a fluid element 14 provided on the wall surface 1a of the exhaust gas passage 1.
この流体素子１４は大気中に開口した検出用通路１５と
、この通路１５ど分岐した穴部１６とで形成され、排気
ガス通路１を流れる排気ガスを穴部１６でう回させて外
部への流出を防止している。This fluid element 14 is formed of a detection passage 15 that opens into the atmosphere and a hole 16 that branches off from this passage 15, and makes the exhaust gas flowing through the exhaust gas passage 1 go around the hole 16 to the outside. Prevents leakage.
この場合には検出用通路１５に排気ガス分析用導管を差
し込むことでガスを採取し、排気ガスのチェックをする
ことができる。In this case, by inserting an exhaust gas analysis conduit into the detection passage 15, gas can be sampled and the exhaust gas can be checked.
一方、第３図に示す排気ガス取出口１３は排気ガス通路
１の途中に消音器１７を設けたもので、排気ガスのチェ
ックには排気ガス分析用導管を消音器１７に差し込んで
採取し、検出することができる。On the other hand, the exhaust gas outlet 13 shown in FIG. 3 is equipped with a muffler 17 in the middle of the exhaust gas passage 1. To check the exhaust gas, a conduit for exhaust gas analysis is inserted into the muffler 17 and sampled. can be detected.
第４図は排気ガス引出管１９を排気管６の途中から上部
エンジンカバー４横まで導出したものを示す。FIG. 4 shows the exhaust gas outlet pipe 19 led out from the middle of the exhaust pipe 6 to the side of the upper engine cover 4.
この引出管１９は通常栓１１′をして塞いでおきチェッ
ク時に栓１１′を抜いて分析用導管を挿入するものであ
る。This extraction tube 19 is normally closed with a stopper 11', and when checking, the stopper 11' is removed and an analysis conduit is inserted.
排気ガス浄化用触媒１８を用いた場合は、浄化された後
の排気ガスをチェックする必要があるが、排気ガスの取
出口は触媒の配設位置との関係から船尾の下になる。When the exhaust gas purification catalyst 18 is used, it is necessary to check the exhaust gas after it has been purified, but the exhaust gas outlet is located under the stern due to the location of the catalyst.
上記実施例では、引出管１９を設けたので、排気ガス取
出口が船尾の下に在っても容易に排気ガスの検出をする
ことができる。In the above embodiment, since the extraction pipe 19 is provided, exhaust gas can be easily detected even if the exhaust gas outlet is located under the stern.
なお図示の実施例では、排気ガス取出口を排気管６の部
分に設けたが、エンジンと排気管６の間の排ガス通路、
たとえば排気マニホールド５に設けることもできる。In the illustrated embodiment, the exhaust gas outlet is provided in the exhaust pipe 6, but the exhaust gas passage between the engine and the exhaust pipe 6,
For example, it can also be provided in the exhaust manifold 5.
以上述べたように本考案の排気ガス取出構造によれば、
ドライブシャフトハウジング内に、エンジン部からの排
気ガスをスクリュー取付孔に案内する排気ガス通路を設
け、この排気ガス通路のエンジン部近傍に排気ガス浄化
用触媒を配装した船外機において、上記排気ガス浄化用
触媒の下流側と水面との間の上記排気ガス通路に排気ガ
スを取出すための管を設けたので、出荷検査あるいは船
検時に排気ガスチェックが実施された場合、確実なデー
タを採取することができる。As described above, according to the exhaust gas extraction structure of the present invention,
In an outboard motor, an exhaust gas passage is provided in the drive shaft housing to guide exhaust gas from the engine section to the screw mounting hole, and an exhaust gas purifying catalyst is arranged near the engine section of this exhaust gas passage. A pipe for extracting exhaust gas is installed in the above exhaust gas passage between the downstream side of the gas purification catalyst and the water surface, so reliable data can be collected when an exhaust gas check is performed during shipping inspection or ship inspection. can do.
また、排気ガスを採取する管を適宜な個所に延出して、
ドライブシャフトハウジングの外から排気ガスを採取可
能にしたので、船に乗ったままで排気ガスの採取を行な
うことができる。In addition, pipes for collecting exhaust gas are extended to appropriate locations.
Since exhaust gas can be collected from outside the drive shaft housing, exhaust gas can be collected while on board the ship.
第１図は本考案の船外機における排気ガス取出構造の一
実施例を示す概念断面図、第２図ないし第４図は本考案
の排気ガス取出構造の他の実施例を示し、第２図および
第３図は排気ガス取出口を拡大して示す部分拡大断面図
、第４図は船外機全体を概念的に示す断面図である。
１・・・・・・排気ガス通路、６・・・・・・排気管、
９，１２．１３・・・・・・排気ガス取出口、１１．１
１’・・・・・・栓、１４・・・・・・流体素子、１７
・・・・・・消音器、１８・・・・・・排気ガス浄化用
触媒、１９・・・・・・引出管。FIG. 1 is a conceptual cross-sectional view showing one embodiment of the exhaust gas extraction structure for an outboard motor of the invention, and FIGS. 2 to 4 show other embodiments of the exhaust gas extraction structure of the invention. 3 and 3 are partially enlarged sectional views showing the exhaust gas outlet, and FIG. 4 is a sectional view conceptually showing the entire outboard motor. 1...Exhaust gas passage, 6...Exhaust pipe,
9,12.13...Exhaust gas outlet, 11.1
1'...Plug, 14...Fluid element, 17
..... Silencer, 18 .... Exhaust gas purification catalyst, 19 .... Output pipe.
Claims (1)
気ガスをスクリュー取付孔に案内する排気ガス通路を設
け、この排気ガス通路のエンジン部近傍に排気ガス浄化
用触媒を配装した船外機において、上記排気ガス浄化用
触媒の下流側と水面との間の上記排気ガス通路に、排気
ガスを取出すための管を設け、この管を適宜な個所に延
出して、ドライブシャフトハウジングの外から排気ガス
を採取可能にするとともに、常時は、管の排気ガス取出
口に栓をしたことを特徴とする船外機における排気ガス
取出構造。In an outboard motor, an exhaust gas passage is provided in the drive shaft housing to guide exhaust gas from the engine section to the screw mounting hole, and an exhaust gas purifying catalyst is arranged near the engine section of this exhaust gas passage. A pipe for extracting exhaust gas is provided in the exhaust gas passage between the downstream side of the gas purification catalyst and the water surface, and this pipe is extended to an appropriate location to collect exhaust gas from outside the drive shaft housing. An exhaust gas extraction structure for an outboard motor, characterized in that the exhaust gas extraction port of the pipe is always plugged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978106970U JPS603039Y2 (en) | 1978-08-03 | 1978-08-03 | Exhaust gas extraction structure in outboard motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978106970U JPS603039Y2 (en) | 1978-08-03 | 1978-08-03 | Exhaust gas extraction structure in outboard motors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5523929U JPS5523929U (en) | 1980-02-15 |
| JPS603039Y2 true JPS603039Y2 (en) | 1985-01-28 |
Family
ID=29050638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978106970U Expired JPS603039Y2 (en) | 1978-08-03 | 1978-08-03 | Exhaust gas extraction structure in outboard motors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603039Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5195571B2 (en) * | 2009-03-26 | 2013-05-08 | スズキ株式会社 | Hybrid outboard motor |
-
1978
- 1978-08-03 JP JP1978106970U patent/JPS603039Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5523929U (en) | 1980-02-15 |
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