US3754399A - Exhaust gas purifying device for an outboard propulsion unit - Google Patents

Exhaust gas purifying device for an outboard propulsion unit Download PDF

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Publication number
US3754399A
US3754399A US00247533A US3754399DA US3754399A US 3754399 A US3754399 A US 3754399A US 00247533 A US00247533 A US 00247533A US 3754399D A US3754399D A US 3754399DA US 3754399 A US3754399 A US 3754399A
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United States
Prior art keywords
exhaust gas
purifying device
gas purifying
passageway means
upper casing
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 - Lifetime
Application number
US00247533A
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English (en)
Inventor
S Ono
T Nakatani
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.)
Yamaha Motor Co Ltd
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Yamaha 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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Application granted granted Critical
Publication of US3754399A publication Critical patent/US3754399A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N13/12—Exhaust or silencing apparatus characterised by constructional features 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/038—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of perforated plates defining expansion chambers associated with condensation and collection chambers
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
    • 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
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/30—Exhaust treatment

Definitions

  • ABSTRACT An exhaust gas purifying device of an outboard motor
  • Foreign Application Priority Data Apr. 30, 1971 Japan 46/34569 (utility model) 00 o Hn H 3 3 W07 G 6 wM 2 O 0 5 3 F 5 0 m B m m 5 0 5 m 9 0 3 n 0 u 6 m m L mf C .10 d 5 sud .l U .mF 2 8 5 55 .l. 21.
  • the invention relates to an outboard propulsion unit such as an outboard motor or a stern drive unit, and more particularly to an exhaust gas purifying device for an outboard propulsion unit.
  • the prior art exhaust gas discharge device of an outboard propulsion unit comprises an upper casing having an exhaust gas passageway, an exhaust gas discharge port connecting the internal combustion engine of the propulsion unit and the upper end of the exhaust gas passageway, and an exhaust gas outlet disposed at the lower end of the passageway.
  • the discharge device causes the exhaust gas brought into the passageway through the discharge port to be drawn off directly into the air or the water of the seas or lakes.
  • the upper casing has an exhaust gas passageway means for introducing exhaust gas from the internal combustion engine and cooling it while it is conducted therethrough.
  • the volatilized ingredients of exhaust gas such as vapors of lubricant and fuel and water steam are condensed or liquefied when the exhaust gas is cooled in the passageway means and collected at the bottom thereof, under which there is disposed a reservoir for holding liquefied ingredients.
  • the exhaust gas purifying device of this invention may discharge the exhaust gas cleaned of harmful ingredients. Further, this device is of simple construction and inexpensive.
  • Efficient cooling of exhaust gas is attained by constructing said passageway means of a first portion having a small cross section and a second portion having a large cross section for rapid expansion of the exahust gas and/or surrounding the passageway means with a cooling chamber.
  • the first portion may consist of an exhaust gas discharge pipe extending downward from a drive section into the upper casing and the second portion may be constituted by an exhaust gas expansion chamber into which there is inserted the discharge pipe.
  • the reservoir may contain an adsorbent for capturing the ingredients of exhaust gas which are collected therein.
  • FIG. 1 is a side view, partly in section, of an exhaust gas purifying device according to this invention fitted to an outboard motor;
  • FIG. 2 is a front view, partly in section, of the device as taken on line Il-II of FIG. 1.
  • Numeral 10 represents an outboard motor, 12 the transom of a boat, 14 the water level when the boat is in a rest position and 16 the water level when the boat is in motion.
  • the outboard motor 10 which may be fitted to the transom 12 of the boat by a transom bracket 18, comprises a drive section 20 with a water-cooled internal combustion engine (not shown), an upper casing 22 disposed below the drive section and a lower casing 24 extending downward from the upper casing.
  • the upper casing consists of a first upper casing section 22a connected to the drive section 20 and a second upper casing section 22b bolted to the lower end of the first section 22a.
  • the passsageway means 30 comprises a narrow exhaust gas discharge pipe 32 for introducing exhaust gas from the drive section into the upper casing 22 and a broad exhaust gas expansion chamber or cylinder 34 for receiving the exhaust gas from the discharge pipe 32 and drawing it off.
  • the discharge pipe 32 vertically extends downward from an exhaust gas discharge port 36 formed in a base plate 26 of the drive section 20 and is inserted airtight into the expansion chamber 34 at its top.
  • the expan sion chamber is also vertically disposed in the upper casing 22.
  • an opening 40 facing the bottom 38 of the expansion chamber 34 At the lower end of the discharge pipe 32 is formed an opening 40 facing the bottom 38 of the expansion chamber 34.
  • the oepning is made sufiiciently small to allow the exhaust gas to be rapidly expanded when it passes therethrough into the expansion chamber 34.
  • an opening 42 At the upper end of the expansion chamber is formed an opening 42 to which there is connected a conduit or outermost pipe 44.
  • Such wide separation of both openings 40 and 42 is advantageous to elevate the efficiency of cooling exhaust gas by the later described cooling chamber.
  • cooling chamber 46 for cooling the passageway means.
  • This cooling chamber is completely shut ofifrom the interior of the passageway means 30 so as to prevent exhaust gas from leaking into the cooling chamber.
  • a water inlet pipe 48 extends downward from the base plate 26 to conduct cooling water into the chamber 46.
  • a water outlet port 50 for drawing ofi the cooling water therein.
  • cooling water for the cooling chamber 46 may consist of that for the engine.
  • the engine cooling water is taken from the seas or lakes into the engine through an inlet 52, water pump 54 and feed pipe 56 and then into the cooling chamber 46 through the aforesaid water inlet pipe 48.
  • a reservoir 60 integrally formed with the upper casing 22 so as to hold the condensed or liquefied ingredients of exhaust gas.
  • This reservoir 60 communicates with the expansion chamber 34 through a connection port 62 and is fixed airtight to expansion chamber so as to prevent the condensed ingredients from leaking into the cooling chamber 46.
  • the reservoir contains an adsorbent 64, which may consist of any kind, provided 'it can adsorb condensed ingredients, or preferably that kind which is particularly adsorptive to oils.
  • the adsorbent is made of foamed or fibrous polypropylene resin.
  • an adsorbent as polypropylene resin which is particularly adsorptive to oils
  • the bottom of the reservoir 60 is perforated with holes 66. These holes communicate with a passage 68, which extends across the second upper casing section 22b and communicates with outside through an opening 70.
  • One side wall of the reservoir 60 mainly, one side wall of the upper casing 22 has an opening 71 which is fitted with a detachable cap 72.
  • the cap 72 is taken off to replace the spent adsorbent with a fresh one through the opening 71.
  • the aforementioned outermost pipe 44 communicating with the opening 42 is integrally formed on the rear wall of the upper casing 22 and extends down said rear wall.
  • a silencer 76 for absorbing noises caused by the discharge of the exhaust gas.
  • This silencer is preferred to take a position slightly higher than the water level 14 so as to be prevented from being directly brought into contact with water.
  • the silencer 76 consists of a noise absorber such as glass wall or steel wool, but may be formed of a mechanical noise absorbing mechanism.
  • the volatilized ingredients of the exhaust gas such as the vapors of lubricant and fuel and water steam are condensed or liquefied to settle on the walls of the pipe 32 and chamber 34 in the form of liquid particle, together with carbon particles contained in the gas.
  • a sluddy mixture consiting of such liquefied ingredients and carbon particles falls down the walls to be collected at the bottom 38 of the chamber 34 and then in the reservoir 60 through the connection port 62.
  • the oily substance and carbon particles of the mixture are caputred by the adsorbent 64, while cleaned water alone is discharged outside through the holes 66, passage 68 and opening 70.
  • the exhaust gas stripped of harmful ingredients flows into the outermost pipe 44 through the opening 42 and expelled into the water through the silencer 76 and discharge outlet 74.
  • the purified exhaust gas is drawn off into the water, but may be released into the open air.
  • the device of this invention is applicable not only to a water-cooled but also an air-cooled engine.
  • An exhaust gas purifying device for an outboard propulsion unit having a driving section comprising:
  • passageway means accommodated in the upper casing to conduct the exhaust gas out of the driving section and to cool the gas in the passageway means for liquefying vaporons ingredients contained in the gas, said passageway means having a bottom part with a port where the liquified ingredients are gathered;
  • a reservoir connected to the port for receiving the liquefied ingredients.
  • said passageway means includes a first portion having a small cross section and a second portion having a large cross section, whereby the exhaust gas is ejected from the first into the second to be rapidly expanded.
  • An exhaust gas purifying device according to claim 1, further comprising a cooling chamber surrounding the passageway means to cool it.
  • said first portion of the passageway means consists of an exhaust gas discharge pipe extending from the drive section into the upper casing and said second portion consists of an exhaust gas expansion chamber in which the discharge pipe is inserted, said discharge pipe having at its end an opening for ejecting the exhaust gas into said expansion chamber and the chamber also having an opening apart from said opening of the discharge pipe for drawing off the gas.
  • An exhaust gas purifying device further comprising a cooling chamber defined by the outer wall of the passageway means and the inner wall of the upper casing, said cooling chamber having at its upper portion a water inlet for conducting cooling water into the cooling chamber and having at its lower portion a water outlet for discharging the water therein.
  • An exhaust gas purifying device according to claim 5, further comprising an oil adsorbent contained in the reservoir.
  • said adsorbent is made of one material selected from the group consisting of foamed polypropylene resin and fibrous polypropylene resin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
US00247533A 1971-04-30 1972-04-26 Exhaust gas purifying device for an outboard propulsion unit Expired - Lifetime US3754399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971034569U JPS5042555Y2 (cs) 1971-04-30 1971-04-30

Publications (1)

Publication Number Publication Date
US3754399A true US3754399A (en) 1973-08-28

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ID=12417943

Family Applications (1)

Application Number Title Priority Date Filing Date
US00247533A Expired - Lifetime US3754399A (en) 1971-04-30 1972-04-26 Exhaust gas purifying device for an outboard propulsion unit

Country Status (5)

Country Link
US (1) US3754399A (cs)
JP (1) JPS5042555Y2 (cs)
FR (1) FR2136784A5 (cs)
NL (1) NL152633B (cs)
SE (1) SE388830B (cs)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114370A (en) * 1976-05-25 1978-09-19 Woods Enterprises, Inc. Exhaust gas recirculation means
US4249375A (en) * 1977-04-19 1981-02-10 Volkswagenwerk Aktiengesellschaft Heat exchanger
US5556311A (en) * 1994-07-28 1996-09-17 Sanshin Kogyo Kabushiki Kaisha Outboard motor exhaust cooling
US5562510A (en) * 1994-07-28 1996-10-08 Sanshin Kogyo Kabushiki Kaisha Exhaust system for outboard motor
US5575699A (en) * 1994-07-28 1996-11-19 Sanshin Kogyo Kabushiki Kaisha Outboard motor exhaust system
USRE36888E (en) * 1990-06-05 2000-10-03 Sanshin Kogyo Kabushiki Kaisha Exhaust gas purifying device for an outboard motor
US20070289297A1 (en) * 2006-06-19 2007-12-20 Volvo Construction Equipment Holding Sweden A.B. Lubricant recovering apparatus for heavy construction equipment
US20080055878A1 (en) * 2006-08-29 2008-03-06 Texas Instruments Incorporated Radiofrequency and electromagnetic interference shielding
US12065230B1 (en) 2022-02-15 2024-08-20 Brunswick Corporation Marine propulsion control system and method with rear and lateral marine drives
US12110088B1 (en) 2022-07-20 2024-10-08 Brunswick Corporation Marine propulsion system and method with rear and lateral marine drives
US12134454B1 (en) 2022-07-20 2024-11-05 Brunswick Corporation Marine propulsion system and method with single rear drive and lateral marine drive
US12258115B2 (en) 2022-07-20 2025-03-25 Brunswick Corporation Marine propulsion system and joystick control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941199Y2 (ja) * 1978-07-26 1984-11-26 スズキ株式会社 空中排気船外機の排気装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142268A (en) * 1938-03-22 1939-01-03 Jr George W Gibbs Marine engine exhaust
GB598258A (en) * 1943-05-03 1948-02-13 App Control Equip Moteurs Improvements in and relating to the exhaust pipes of internal combustion engines
US3293174A (en) * 1962-03-08 1966-12-20 Ici Ltd Plant and processes for the treatment of effluent and sewage
US3310022A (en) * 1965-08-23 1967-03-21 Kiekhaefer Corp Exhaust system for outboard motors
US3431882A (en) * 1967-03-26 1969-03-11 Outboard Marine Corp Marine propulsion device
US3434268A (en) * 1967-07-25 1969-03-25 Marshall J Mckenzie Exhaust gas filter system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142268A (en) * 1938-03-22 1939-01-03 Jr George W Gibbs Marine engine exhaust
GB598258A (en) * 1943-05-03 1948-02-13 App Control Equip Moteurs Improvements in and relating to the exhaust pipes of internal combustion engines
US3293174A (en) * 1962-03-08 1966-12-20 Ici Ltd Plant and processes for the treatment of effluent and sewage
US3310022A (en) * 1965-08-23 1967-03-21 Kiekhaefer Corp Exhaust system for outboard motors
US3431882A (en) * 1967-03-26 1969-03-11 Outboard Marine Corp Marine propulsion device
US3434268A (en) * 1967-07-25 1969-03-25 Marshall J Mckenzie Exhaust gas filter system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114370A (en) * 1976-05-25 1978-09-19 Woods Enterprises, Inc. Exhaust gas recirculation means
US4249375A (en) * 1977-04-19 1981-02-10 Volkswagenwerk Aktiengesellschaft Heat exchanger
USRE36888E (en) * 1990-06-05 2000-10-03 Sanshin Kogyo Kabushiki Kaisha Exhaust gas purifying device for an outboard motor
US5556311A (en) * 1994-07-28 1996-09-17 Sanshin Kogyo Kabushiki Kaisha Outboard motor exhaust cooling
US5562510A (en) * 1994-07-28 1996-10-08 Sanshin Kogyo Kabushiki Kaisha Exhaust system for outboard motor
US5575699A (en) * 1994-07-28 1996-11-19 Sanshin Kogyo Kabushiki Kaisha Outboard motor exhaust system
US20070289297A1 (en) * 2006-06-19 2007-12-20 Volvo Construction Equipment Holding Sweden A.B. Lubricant recovering apparatus for heavy construction equipment
US7461625B2 (en) * 2006-06-19 2008-12-09 Volvo Construction Equipment Holding Sweden Ab Lubricant recovering apparatus for heavy construction equipment
CN101092820B (zh) * 2006-06-19 2011-08-31 沃尔沃建造设备控股（瑞典）有限公司 用于重型施工装备的润滑剂回收设备
US20080055878A1 (en) * 2006-08-29 2008-03-06 Texas Instruments Incorporated Radiofrequency and electromagnetic interference shielding
US8004860B2 (en) * 2006-08-29 2011-08-23 Texas Instruments Incorporated Radiofrequency and electromagnetic interference shielding
US12065230B1 (en) 2022-02-15 2024-08-20 Brunswick Corporation Marine propulsion control system and method with rear and lateral marine drives
US12110088B1 (en) 2022-07-20 2024-10-08 Brunswick Corporation Marine propulsion system and method with rear and lateral marine drives
US12134454B1 (en) 2022-07-20 2024-11-05 Brunswick Corporation Marine propulsion system and method with single rear drive and lateral marine drive
US12258115B2 (en) 2022-07-20 2025-03-25 Brunswick Corporation Marine propulsion system and joystick control method

Also Published As

Publication number Publication date
JPS4730499U (cs) 1972-12-06
FR2136784A5 (cs) 1972-12-22
NL7205766A (cs) 1972-11-01
SE388830B (sv) 1976-10-18
NL152633B (nl) 1977-03-15
JPS5042555Y2 (cs) 1975-12-03

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