US20110070782A1 - Marine propulsion system - Google Patents

Marine propulsion system Download PDF

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Publication number
US20110070782A1
US20110070782A1 US12/993,066 US99306609A US2011070782A1 US 20110070782 A1 US20110070782 A1 US 20110070782A1 US 99306609 A US99306609 A US 99306609A US 2011070782 A1 US2011070782 A1 US 2011070782A1
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US
United States
Prior art keywords
combustion chamber
propulsion system
marine propulsion
hot gas
fuel
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.)
Abandoned
Application number
US12/993,066
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English (en)
Inventor
Codrin-Gruie Cantemir
Gildo Pallanca
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.)
Ohio State University
Original Assignee
Ohio State University
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Filing date
Publication date
Application filed by Ohio State University filed Critical Ohio State University
Priority to US12/993,066 priority Critical patent/US20110070782A1/en
Assigned to THE OHIO STATE UNIVERSITY reassignment THE OHIO STATE UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PALLANCA, GILDO, CANTEMIR, CODRIN-GRUIE
Publication of US20110070782A1 publication Critical patent/US20110070782A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/12—Marine propulsion by water jets the propulsive medium being steam or other gas
    • B63H11/14—Marine propulsion by water jets the propulsive medium being steam or other gas the gas being produced by combustion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H2011/002—Marine propulsion by water jets using Coanda effect, i.e. the tendency of fluid jets to be attracted to nearby surfaces
    • 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
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like

Definitions

  • the present invention is in the field of jet propulsion. Specifically, the present invention relates to a marine jet propulsion system and vehicles incorporating such systems. More specifically, the present invention relates to a marine jet propulsion system utilizing the physical phenomena known as the Coanda effect to produce a propulsive force.
  • fluid unless, otherwise explicitly indicated, is intended to encompass matter which exhibits a fluid or flowable characteristic, including gases and liquids with or without particulate solids in suspension, as well as mixtures thereof.
  • the system of the present invention may be used to propel any of a number of vehicles, including surface vessels, submarines, torpedoes, aircraft, and land vehicles, etc.
  • the Coanda effect is the tendency of a jet of fluid to follow a wall contour when discharged adjacent to a surface, when that surface curves away from the jet discharge axis.
  • the Coanda effect is apparent when a stream of fluid emerges from a container, through a slot or other aperture, if one of the lips forming the walls of the slot is extended and recedes continuously from the direction of the axis of the slot. Under such conditions, the fluid clings to the extended lip and tends to increase in velocity, producing a reduced pressure region and causing an intake of large quantities of the surrounding fluid.
  • U.S. Pat. No. 3,337,121 granted Aug. 22, 1967, also to Henri Coanda, the contents thereof is hereby incorporated by reference herein, describes a fluid propulsion system based on the Coanda effect.
  • One goal of the present invention is to produce a high efficient jet propulsion system using existing components. Furthermore, the system of the present invention can be used in a wide variety of applications from light outboard units to heavy inboard installations.
  • the present invention includes a marine propulsion system comprising: (1) a fuel-filled tank; (2) an air compressor that generates compressed air; an engine that receives fuel from the tank, wherein the air compressor is powered by the engine; and (3) at least one hot gas generator that receives compressed air from the air compressor, the hot gas generator comprising: (a) a combustion chamber having an inlet and an outlet, the compressed gas injected into the combustion chamber at the inlet, the combustion chamber adapted to produce hot gas; (b) an injection nozzle that receives fuel from the tank, the injection nozzle positioned proximate to the inlet of the combustion chamber, the injection nozzle adapted to spray the fuel into the combustion chamber; and (c) an exhaust nozzle positioned at the outlet of the combustion chamber through which the hot gas produced in the combustion chamber is discharged from the hot gas generator.
  • FIG. 1 provides a diagram of a marine propulsion system in accordance with one embodiment of the present invention.
  • FIG. 2 provides a diagram of a marine propulsion system in accordance with one embodiment of the present invention.
  • FIG. 3 provides an illustration of a vessel comprising a marine propulsion system in accordance with one embodiment of the present invention.
  • FIG. 1 One embodiment of the present invention is shown in FIG. 1 .
  • the basic system consists of a piston engine 1 driving an air compressor 2 and a hot gas generator 3 .
  • the combustion chamber of a gas generator 3 is supplied with fuel by an injection nozzle 4 and the compressed air delivered by the compressor 2 .
  • the hot gas generated by the gas generator 3 is exhausted into the water with the help of an exhaust nozzle 5 .
  • the thrust is obtained by the hot gas impulse (similar to an aviation jet engine) and by the back pressure of the gas bubble formed in water in the exhaust nozzle's close vicinity.
  • the exhaust nozzle 5 might have a convergent-divergent configuration, but may alternatively possess a different shape more suitable to the use of the advantage of the back pressure.
  • the exhaust nozzle 5 may be designed with or without a constriction or may alternatively be adjustable to accommodate a variety of desired speed/thrust combinations.
  • the compressed air Prior to being mixed with the fuel, the compressed air is heated by a heat recovery device 6 .
  • the recovery device 6 acts like a heat exchanger keeping the gas generator wall temperature low and preheating the compressed air (saving some fuel).
  • the gas generator 3 and the engine 1 are supplied with fuel from a tank 8 .
  • different types of fuel might be used for the engine and for the gas generator. Accordingly, more than one tank may be necessary. For example, a first tank containing gasoline may be used in conjunction with the engine, while a second tank containing jet fuel may be used in conjunction with the hot gas generator.
  • the driving engine 1 may be any type of internal combustion engine having one or more reciprocated or rotating pistons and functioning with 2 or 4 strokes, using Diesel, Otto or Atkinson cycles.
  • the engine could alternatively be replaced by any suitable device capable of powering air compressor.
  • the air compressor 2 may operate by positive displacement or dynamic functioning.
  • the air compressor could be replaced by any device capable of providing compressed air to the hot gas generator.
  • a 30-hp Briggs & Straton 2-cylinder small engine driving an Eaton M45 supercharger is expected to develop more than 200 hp in water at a fraction of the price and weight typically seen for a 200 hp big 4-cylinder conventional outboard.
  • the water power exceeds the engine power in a ratio equal with the compressor airflow reported to the engine airflow and subsequently, the ratio between the fuel injected in the gas generator and the fuel used by the engine. With the use of custom design components this ratio may exceed 10.
  • FIG. 2 illustrates a second embodiment of the present invention which generates thrust based on the exhaust gas energy.
  • exhaust nozzle 5 from FIG. 1 is a direct thrust producer (the gas energy is used to produce impulse and back pressure)
  • the exhaust nozzle 7 shown in FIG. 2 is using exhaust gas energy to accelerate water.
  • the nozzle 7 is based on the Coanda Effect, as described in U.S. Pat. No. 3,337,121, which exploits the deviation of a jet fluid into another fluid.
  • the high velocity gas jet will produce a lower velocity water jet acting similar to an absorption-repulsion pump.
  • the water jet velocity is much smaller than the gas velocity, the large water mass flow can produce a thrust bigger than what can be obtained directly with the same gas energy (at the cost of a lower operational speed).
  • FIG. 3 provides an illustration of a vessel 10 equipped with a marine propulsion system according to the present invention such that the hot gas generator is positioned below water line 12 as when the vessel is afloat.
  • the hot gas generator could alternatively be positioned so as to be above the water line.
  • the placement of the engine 1 , the air compressor 2 , and the tank 8 are arbitrary and could each be placed either above or below the water line 12 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
US12/993,066 2008-05-16 2009-05-18 Marine propulsion system Abandoned US20110070782A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/993,066 US20110070782A1 (en) 2008-05-16 2009-05-18 Marine propulsion system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5381708P 2008-05-16 2008-05-16
PCT/US2009/044366 WO2009140682A2 (en) 2008-05-16 2009-05-18 Marine propulsion system
US12/993,066 US20110070782A1 (en) 2008-05-16 2009-05-18 Marine propulsion system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/044366 A-371-Of-International WO2009140682A2 (en) 2008-05-16 2009-05-18 Marine propulsion system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/304,185 Continuation US8545279B2 (en) 2008-05-16 2011-11-23 Marine propulsion system

Publications (1)

Publication Number Publication Date
US20110070782A1 true US20110070782A1 (en) 2011-03-24

Family

ID=41319381

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/993,066 Abandoned US20110070782A1 (en) 2008-05-16 2009-05-18 Marine propulsion system
US13/304,185 Active US8545279B2 (en) 2008-05-16 2011-11-23 Marine propulsion system

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/304,185 Active US8545279B2 (en) 2008-05-16 2011-11-23 Marine propulsion system

Country Status (4)

Country Link
US (2) US20110070782A1 (de)
EP (1) EP2288536A4 (de)
JP (1) JP2011520691A (de)
WO (1) WO2009140682A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102642607A (zh) * 2012-05-08 2012-08-22 徐忠斌 旋轨来复式推进器
DE102013010974A1 (de) * 2013-07-02 2015-01-08 Dieter Lang Vorrichtung zum Antreiben von Fahrzeugen mit Druckluft und Wasserdampf durch Kreiskolbenkompressor
WO2016078575A1 (zh) * 2014-11-17 2016-05-26 朱晓义 一种交通运输装置
CN106741783B (zh) * 2017-02-27 2018-08-14 中国科学院海洋研究所 一种脉冲式单向推进泵
CN107150788A (zh) * 2017-04-26 2017-09-12 朱晓义 一种产生更大升力的固定翼飞行器
KR102407666B1 (ko) * 2020-08-26 2022-06-10 강덕권 안전성이 높은 공기를 이용한 수중용 추진장치

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1375601A (en) * 1919-03-27 1921-04-19 Morize Ernest Propelling device for use on vehicles, marine vessels, or aircraft
US2052869A (en) * 1934-10-08 1936-09-01 Coanda Henri Device for deflecting a stream of elastic fluid projected into an elastic fluid
US2351750A (en) * 1943-01-04 1944-06-20 Donald G Fawkes Propulsion means for naval torpedoes
US2528354A (en) * 1945-02-20 1950-10-31 Bendix Aviat Corp Jet propulsion outboard motor
US3273333A (en) * 1963-09-12 1966-09-20 Edward A Sokolski Water jet propulsion device
US3337121A (en) * 1964-07-22 1967-08-22 Huyck Corp Fluid propulsion system
US3402555A (en) * 1967-04-19 1968-09-24 Jack N. Piper Steam-jet nozzle for propelling marine vessels
US3808804A (en) * 1972-02-11 1974-05-07 Rolls Royce 1971 Ltd Marine propulsion
US3889622A (en) * 1972-02-11 1975-06-17 Rolls Royce 1971 Ltd Marine propulsion
US4343611A (en) * 1979-01-05 1982-08-10 Rolls-Royce Limited Marine propulsion
US4767364A (en) * 1987-01-14 1988-08-30 Erwin Lenz Advanced steering and propulsion system for ships
US5344345A (en) * 1992-06-03 1994-09-06 Idc Corporation Water vessel propulsion apparatus
US5505639A (en) * 1988-06-02 1996-04-09 Burg; Donald E. Hydro-air drive
US5598700A (en) * 1994-06-30 1997-02-04 Dimotech Ltd. Underwater two phase ramjet engine
US20030013356A1 (en) * 2000-06-07 2003-01-16 Burns Alan R Propulsion system
US6881110B1 (en) * 2003-03-03 2005-04-19 Siemens Aktiengesellschaft High-speed vessel powered by at least one water jet propulsion system without exhaust gas trail

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR518485A (fr) * 1918-07-20 1921-05-26 Michel Zack Procédé et dispositif pour la propulsion des navires
JPS5583695A (en) * 1978-12-18 1980-06-24 Yukio Imamura Propulsion device for ship

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1375601A (en) * 1919-03-27 1921-04-19 Morize Ernest Propelling device for use on vehicles, marine vessels, or aircraft
US2052869A (en) * 1934-10-08 1936-09-01 Coanda Henri Device for deflecting a stream of elastic fluid projected into an elastic fluid
US2351750A (en) * 1943-01-04 1944-06-20 Donald G Fawkes Propulsion means for naval torpedoes
US2528354A (en) * 1945-02-20 1950-10-31 Bendix Aviat Corp Jet propulsion outboard motor
US3273333A (en) * 1963-09-12 1966-09-20 Edward A Sokolski Water jet propulsion device
US3337121A (en) * 1964-07-22 1967-08-22 Huyck Corp Fluid propulsion system
US3402555A (en) * 1967-04-19 1968-09-24 Jack N. Piper Steam-jet nozzle for propelling marine vessels
US3889622A (en) * 1972-02-11 1975-06-17 Rolls Royce 1971 Ltd Marine propulsion
US3808804A (en) * 1972-02-11 1974-05-07 Rolls Royce 1971 Ltd Marine propulsion
US4343611A (en) * 1979-01-05 1982-08-10 Rolls-Royce Limited Marine propulsion
US4767364A (en) * 1987-01-14 1988-08-30 Erwin Lenz Advanced steering and propulsion system for ships
US5505639A (en) * 1988-06-02 1996-04-09 Burg; Donald E. Hydro-air drive
US5344345A (en) * 1992-06-03 1994-09-06 Idc Corporation Water vessel propulsion apparatus
US5598700A (en) * 1994-06-30 1997-02-04 Dimotech Ltd. Underwater two phase ramjet engine
US20030013356A1 (en) * 2000-06-07 2003-01-16 Burns Alan R Propulsion system
US6662549B2 (en) * 2000-06-07 2003-12-16 Pursuit Dynamics Plc Propulsion system
US6881110B1 (en) * 2003-03-03 2005-04-19 Siemens Aktiengesellschaft High-speed vessel powered by at least one water jet propulsion system without exhaust gas trail

Also Published As

Publication number Publication date
WO2009140682A3 (en) 2010-04-01
WO2009140682A2 (en) 2009-11-19
US8545279B2 (en) 2013-10-01
JP2011520691A (ja) 2011-07-21
EP2288536A4 (de) 2013-03-13
US20120071045A1 (en) 2012-03-22
EP2288536A2 (de) 2011-03-02

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Owner name: THE OHIO STATE UNIVERSITY, OHIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CANTEMIR, CODRIN-GRUIE;PALLANCA, GILDO;SIGNING DATES FROM 20090513 TO 20090603;REEL/FRAME:025377/0924

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION