EP0282462A1 - Dispositif de déchargement sous-marin des gaz d'échappement pour canot à moteur - Google Patents

Dispositif de déchargement sous-marin des gaz d'échappement pour canot à moteur Download PDF

Info

Publication number
EP0282462A1
EP0282462A1 EP88830085A EP88830085A EP0282462A1 EP 0282462 A1 EP0282462 A1 EP 0282462A1 EP 88830085 A EP88830085 A EP 88830085A EP 88830085 A EP88830085 A EP 88830085A EP 0282462 A1 EP0282462 A1 EP 0282462A1
Authority
EP
European Patent Office
Prior art keywords
exhaust device
water line
underwater
whose
underwater exhaust
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
Application number
EP88830085A
Other languages
German (de)
English (en)
Other versions
EP0282462B1 (fr
Inventor
Mario Amati
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0282462A1 publication Critical patent/EP0282462A1/fr
Application granted granted Critical
Publication of EP0282462B1 publication Critical patent/EP0282462B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
    • 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
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the present invention refers to an underwater exhaust device for motorboats which is capable of reducing, not­withstanding its being substantially devoid of silencers, the disturbing exhaust noise in neutral and at low speed, and at the same time of overcoming further drawbacks occurring at average and high speed.
  • the conventional exhaust systems both for diesel and petrol engines, installed on trading, military or pleasure craft are provided with an exhaust pipe situated a hundred percent above the water line, both at transom and at broadside, it being possible in the latter case to provide the hull with external devices to send the exhaust gases abaft.
  • the device according to the invention is substantially devoid of silencers. Therefore, it offers many advantages, first of all merely depending on the absence of such silencers.
  • financial advantages resulting from the fact that it is not necessary to purchase and to install the silencers
  • technical advantages resulting from the increased power due to the absence of counter-­pressure, the absence of heat loss in the engine-room (provoked by the increased temperature created by the use of silencers), the absence of the silencers' weight
  • advantages concerning the space available for other uses resulting from the increased room in the engine room, which is normally taken up by silencers
  • ecological advan­tages resulting from the decreased exhaust fumes.
  • the exhaust device according to the invention is characterized by the fact that the device is provided with a main exhaust pipe, having at least the final portion below the water line, and a second­ary exhaust pipe of smaller section, which branches off from the main pipe and is entirely located above the water line.
  • the underwater exhaust device according to the present invention can be provided with an expansion chamber, in order to facilitate the emmission of gases from the main exhaust pipe.
  • This chamber can be created by hollowing the motorboat hull out in the shape of a parallelepiped having the section in the shape of a non-isosceles right-angled triangle, whose shorter side is substantially perpendicular to the water line, whose longer side is substantially parallel to the water line and whose hypotenuse is substan­tially inclined downwards towards the stern.
  • the above device can also be provided with a projecting element in the fore portion, on the bow side, of the expansion chamber, in order to increase the pressure drop in the chamber while the motorboat is moving forwards.
  • the projecting element can be shaped like a paral­lelepiped having the section in the shape of a non-isosce­les right angled triangle, whose shorter side is substan­tially perpendicular to the water line, whose longer side is substantially parallel to the water line and whose hypotenuse is substantially inclined upwards towards the bow.
  • hypertenuse inclined upwards towards the bow also includes an upwardly curving line going towards the bow, and which is substantially concave in its lower portion.
  • the end section of the secondary exhaust pipe can be provided with a silencer; the "Acqualift” type would be the most advantageous.
  • 1 stands for the motorboat hull provided with the underwater exhaust device according to the present invention.
  • the main exhaust pipe 3 branches off from the engine 2, which drives the propeller 2 ⁇ and ends in the expansion chamber 4, created by hollowing the motorboat hull out in the shape of a parellelepiped having the section in the shape of a non-isosceles right-angled triangle, whose shorter side is perpendicular to the water line, whose longer side is parallel to the water line and whose hypote­nuse is inclined downwards towards the stern.
  • a projecting element 5 is located in the fore portion of the expansion chamber 4 in the shape of a parellel­epiped, having the section of a non-isosceles right-­angled triangle, whose shorter side is perpendicular to the water line, whose longer side is parallel to the water line, and whose hypotenuse is inclined upwards towards the bow.
  • the main exhaust pipe 3 branches off into the secondary exhaust pipe 6 of smaller section; the latter is entirely located above the water line and before reaching the outside is connected to an "Acqualift" silencer 7, which contains the column of water 8 and the pipe 9, of which one end is in contact with the column of water 8 and the other end is open towards the outside.
  • the hull 1 is equipped with superstructures and rudder not shown in the figure.
  • the exhaust device according to the present invention is part of more complex systems, that is to say motorboat engines or motorboats themselves.

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)
  • Exhaust Gas After Treatment (AREA)
EP88830085A 1987-03-10 1988-03-02 Dispositif de déchargement sous-marin des gaz d'échappement pour canot à moteur Expired EP0282462B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4770587 1987-03-10
IT47705/87A IT1205740B (it) 1987-03-10 1987-03-10 Dispositivo per lo scarico subacqueo dei gas combusti di imbarcazioni a motore

Publications (2)

Publication Number Publication Date
EP0282462A1 true EP0282462A1 (fr) 1988-09-14
EP0282462B1 EP0282462B1 (fr) 1991-10-09

Family

ID=11262006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830085A Expired EP0282462B1 (fr) 1987-03-10 1988-03-02 Dispositif de déchargement sous-marin des gaz d'échappement pour canot à moteur

Country Status (4)

Country Link
EP (1) EP0282462B1 (fr)
DE (1) DE3865327D1 (fr)
ES (1) ES2027037T3 (fr)
IT (1) IT1205740B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5234364A (en) * 1990-04-12 1993-08-10 Sanshin Kogyo Kabushiki Kaisha Exhaust system for small planing boat
US5676575A (en) * 1994-03-08 1997-10-14 Sanshin Kogyo Kabushiki Kaisha Exhaust system for watercraft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10231152A1 (de) 2002-07-10 2004-02-12 Siemens Ag Elektrisches Energieversorgungssystem für ein Schiff, insbesondere für ein mit niedriger IR-Signatur betreibbares Marine(Navy)-Schiff

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002136A (en) * 1975-10-14 1977-01-11 Ray Industries, Inc. Marine exhaust system
GB2065036A (en) * 1979-12-12 1981-06-24 Henwood M R Improvements in or relating to exhaust systems and/or boat hulls
US4393802A (en) * 1980-05-16 1983-07-19 Rizzo Salvatore A Boat hull with underside channel
EP0088640A2 (fr) * 1982-03-09 1983-09-14 Akira Ikeda Navire avec l'échappement par le fond

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002136A (en) * 1975-10-14 1977-01-11 Ray Industries, Inc. Marine exhaust system
GB2065036A (en) * 1979-12-12 1981-06-24 Henwood M R Improvements in or relating to exhaust systems and/or boat hulls
US4393802A (en) * 1980-05-16 1983-07-19 Rizzo Salvatore A Boat hull with underside channel
EP0088640A2 (fr) * 1982-03-09 1983-09-14 Akira Ikeda Navire avec l'échappement par le fond

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5234364A (en) * 1990-04-12 1993-08-10 Sanshin Kogyo Kabushiki Kaisha Exhaust system for small planing boat
US5676575A (en) * 1994-03-08 1997-10-14 Sanshin Kogyo Kabushiki Kaisha Exhaust system for watercraft

Also Published As

Publication number Publication date
IT1205740B (it) 1989-03-31
ES2027037T3 (es) 1992-05-16
DE3865327D1 (de) 1991-11-14
EP0282462B1 (fr) 1991-10-09
IT8747705A0 (it) 1987-03-10

Similar Documents

Publication Publication Date Title
US3273333A (en) Water jet propulsion device
US6558213B1 (en) High performance engine skeg
DE60029940D1 (de) Bootsantrieb
CA2239934A1 (fr) Systeme de traitement des gaz d'echappement de navires oceaniques, de preference de ceux utilises a des fins militaires
NO315414B1 (no) Anordning ved båt e.l.
EP0282462A1 (fr) Dispositif de déchargement sous-marin des gaz d'échappement pour canot à moteur
US5594217A (en) Exhaust muffler for small marine craft
KR101577195B1 (ko) 큰 직경의 스크루 프로펠러를 선박에 제공하는 방법 및 큰 직경의 스크루 프로펠러를 갖는 선박
US6062921A (en) Propulsion system and power plant for ships or boats and preferably for naval vessels
US4767364A (en) Advanced steering and propulsion system for ships
JP2012001115A (ja) ツインスケグ船
EP0544711A1 (fr) Systeme d'helice carenee pour voilier.
US4505684A (en) Thrust tube propulsion system
US6554665B1 (en) Exhaust system for watercraft
JPH11198892A (ja) 摩擦抵抗を減らす船
US20060124044A1 (en) Vessel provided with a foil situated below the waterline
US5317982A (en) Ship
US20100041288A1 (en) Submerged exhaust discharge for marine vessel
US20020069805A1 (en) Fast fire boat
CN110979556B (zh) 用于远洋救助船罗经甲板的非对称分体式甲板室设计结构
RU2020106C1 (ru) Глиссирующий корпус судна
EP1926657B1 (fr) Navire
JPH07277267A (ja) 摩擦抵抗低減装置付き船舶
US20050176111A1 (en) Directable exhaust for water sport tow boat
EP0347363A1 (fr) Dispositif pour diminuer la résistance à l'avancement d'un bateau

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880308

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB LI NL SE

R17P Request for examination filed (corrected)

Effective date: 19890224

17Q First examination report despatched

Effective date: 19900312

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19911009

Ref country code: CH

Effective date: 19911009

REF Corresponds to:

Ref document number: 3865327

Country of ref document: DE

Date of ref document: 19911114

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2027037

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 88830085.2

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980223

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980327

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19980330

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19980331

Year of fee payment: 11

Ref country code: ES

Payment date: 19980331

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980429

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990303

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19990303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990302

EUG Se: european patent has lapsed

Ref document number: 88830085.2

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991130

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19991001

EUG Se: european patent has lapsed

Ref document number: 88830085.2

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000101

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010601