EP0219278A2 - Carburettor with drain port - Google Patents
Carburettor with drain port Download PDFInfo
- Publication number
- EP0219278A2 EP0219278A2 EP86307626A EP86307626A EP0219278A2 EP 0219278 A2 EP0219278 A2 EP 0219278A2 EP 86307626 A EP86307626 A EP 86307626A EP 86307626 A EP86307626 A EP 86307626A EP 0219278 A2 EP0219278 A2 EP 0219278A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- carburettor
- drain port
- drainage
- engine
- closure means
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 210000003195 fascia Anatomy 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
Definitions
- THIS INVENTION relates to adaptation of an internal combustion engine to permit restarting of the engine as soon as possible after the carburettor chambers have been flooded with water.
- An internal-combustion engine for a land vehicle is normally not designed in any way for contact with, or immersion in,a body of water. Should such immersion occur as the result of an accident the engine stops,becomes flooded with water, and needs specialist attention thereafter.
- a few vehicles have on-land/in-water capability. e.g. tanks. They typically have fully shielded engines, with sealed housings and special exhaust and inlet ports. This is an expensive expedient, and for waterborne craft attempts have been made to protect the engines especially outboard engines against casual splashes, temporary immersion (wave action) or longterm immersion (e.g. capsize) by a selectively sealable carburettor air intake. Moreover.
- the present invention therefore sets out to achieve a different end, namely, means by which a engine flooded with water can be rapidly cleared and restarted. It has particular utility in, but is not limited to, the smaller end of the range of outboard motor sizes.
- the present invention envisages an attachment to a conventional carburettor.
- these define a chamber to hold a quantity of petrol.
- a threaded port At the base of the chamber is a threaded port with a threaded sealing plug therein.
- the invention provides a carburettor for an internal combustion engine of the type with a carburettor body chamber with an air intake at or towards the top and a drain port at the bottom characterised in that the drain port is permanently open and communicates with a downwardly extending length of drainage ducting incorporating a manually operable externally accessible normally closed but selectively operable closure means located beneath and spaced from the drain port to define a length of ducting between the closure means and the open drain port which at least partially fills with liquid fuel when the engine is running; whereby, in the event of water ingress through the air intake, opening of the closure means allows drainage under gravity of the fuel accumulated in the drainage duct and thus of the carburettor contents.
- the drainable ducting is preferably a flexible synthetic polymer tube, controlled by a turnable knob as a tap to achieve drainage, preferably at least in part assisted by the fuel existing in the tube.
- a drainage end can be located lower than the turnable knob, to further facilitate drainage.
- An internal combustion engine comprising one or more carburettors modified as above is also an aspect of the present invention.
- Such an engine can be an outboard motor engine; any control means e.g.knobs, can be mounted on the fascia in an accessible forward position.
- An outboard motor comprises a tray 1 upon which is mounted a motor 2 shown diagrammatically as block (in dotted lines) with a starter pulley 3 (and cord 4) on top.Beneath and integral with tray 1 is a rudder 5 enclosing a drive between the motor 2 and the propeller 6.
- a lid or housing 7 fits over the motor, and onto the tray 1 generally by simple clips.
- a carburettor 8 air intake generally at an upper location 8a and with a conventional drain port 9 at its lower end.
- a flexible polymer tube 10 passing to control knob 11 suitably positioned on fascia board 12 of tray 1.
- the knob 11 is generally below the level of drain port 9, and the outlet from the drain port at 13 is lower still.
- two, three, four or more carburettors can be used, each equipped with a suitable drainage length of tubing 10.
- Separate knobs 11 can be used in such a case, or the drain tube can be combined to only one or two such knobs for joint drainage.
- the engine spark plugs are then removed, and the engine turned over by pulling cord 4. This expels water from the engine cylinders through the spark plug openings. 20 pulls or so may be necessary.
- the fuel line is reconnected to flush the carburettors, the fuel use being drained through tube 10 until no water remains therein.
- the fuel valves are closed, the engine primed, choke pulled out, new dry plugs fitted. and the engine should restart.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Junction Field-Effect Transistors (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
Description
- THIS INVENTION relates to adaptation of an internal combustion engine to permit restarting of the engine as soon as possible after the carburettor chambers have been flooded with water.
- An internal-combustion engine for a land vehicle is normally not designed in any way for contact with, or immersion in,a body of water. Should such immersion occur as the result of an accident the engine stops,becomes flooded with water, and needs specialist attention thereafter.
- A few vehicles have on-land/in-water capability. e.g. tanks. They typically have fully shielded engines, with sealed housings and special exhaust and inlet ports. This is an expensive expedient, and for waterborne craft attempts have been made to protect the engines especially outboard engines against casual splashes, temporary immersion (wave action) or longterm immersion (e.g. capsize) by a selectively sealable carburettor air intake. Moreover. our copending Patent Application 8524232 of even date entitled "INTERNAL COMBUSTION ENGINE AIR IKTAKE" proposes a further modification in which the air intake is extended by an elongate duct the configuration of which and/or the air inlet location of which and/or the nature of the air inlet end of which is such as to protect the carburettor against flooding by water during partial or total immersion of the motor.
- All of the above expedients set out to prevent access of water to the interior of the engine,and especially to the carburettor. However, we have realised that, especially for a smaller engine, the cost of even the cheapest expedient can be relatively significant.
- The present invention therefore sets out to achieve a different end, namely, means by which a engine flooded with water can be rapidly cleared and restarted. It has particular utility in, but is not limited to, the smaller end of the range of outboard motor sizes.
- The present invention envisages an attachment to a conventional carburettor. Typically, these define a chamber to hold a quantity of petrol. At the base of the chamber is a threaded port with a threaded sealing plug therein. Even some land vehicles possess such carburettor drain ports, for instance for use in the event of water in the fuel or similar mishaps. Outboard motors possess such carburettor drain ports for use more typically when water has entered the carburettor via contaminated fuel in the air intake duct.
- It is not unknown for craft fitted with such motors to capsize e.g. on a rescue or assault mission in adverse weather. The vessel is designed (or provided with) a self righting capability but by the time this has come into use the motor is typically full of water, even though mercury gravity switches switch off the motor after a given angle of capsize.It is difficult in adverse weather, often at night, to remove the engine housing, locate and remove the drain port plugs (especially since these are usually locate" in the expection that the engine will be back on the bench at the repair shop before such steps are taken and are therefore not easily accessible ) and drain the small carburettor chamber effectively, in heavy seas with waves splashing the stationary craft.
- In one aspect the invention provides a carburettor for an internal combustion engine of the type with a carburettor body chamber with an air intake at or towards the top and a drain port at the bottom characterised in that the drain port is permanently open and communicates with a downwardly extending length of drainage ducting incorporating a manually operable externally accessible normally closed but selectively operable closure means located beneath and spaced from the drain port to define a length of ducting between the closure means and the open drain port which at least partially fills with liquid fuel when the engine is running; whereby, in the event of water ingress through the air intake, opening of the closure means allows drainage under gravity of the fuel accumulated in the drainage duct and thus of the carburettor contents.
- The drainable ducting is preferably a flexible synthetic polymer tube, controlled by a turnable knob as a tap to achieve drainage, preferably at least in part assisted by the fuel existing in the tube. A drainage end can be located lower than the turnable knob, to further facilitate drainage.
- An internal combustion engine comprising one or more carburettors modified as above is also an aspect of the present invention. Such an engine can be an outboard motor engine; any control means e.g.knobs, can be mounted on the fascia in an accessible forward position.
- The invention will be further described with reference to the single Figure of the accompanying drawing, which shows a modified single carburettor system and its location in relation to an outboard motor.
- An outboard motor comprises a
tray 1 upon which is mounted amotor 2 shown diagrammatically as block (in dotted lines) with a starter pulley 3 (and cord 4) on top.Beneath and integral withtray 1 is a rudder 5 enclosing a drive between themotor 2 and the propeller 6. A lid or housing 7 fits over the motor, and onto thetray 1 generally by simple clips. - At the forward end of the motor is located a
carburettor 8 air intake generally at anupper location 8a and with aconventional drain port 9 at its lower end. However, in place of a threaded fitting there is fixed aflexible polymer tube 10, passing to controlknob 11 suitably positioned onfascia board 12 oftray 1. Theknob 11 is generally below the level ofdrain port 9, and the outlet from the drain port at 13 is lower still. - Instead of the one carburettor shown, two, three, four or more carburettors can be used, each equipped with a suitable drainage length of
tubing 10.Separate knobs 11 can be used in such a case, or the drain tube can be combined to only one or two such knobs for joint drainage. - The use of such a fitment is as 'follows:-Initially the
engine 1 is running normally. As the craft (e.g. an inflatable dinghy) capsizes, the engine stops due to a cutout switch based on gravity flow of mercury in a constricted container. The vessel is righted, in itself a standard emergency procedure . The lid or cowling 7 is removed, and excess water drains away.The fuel line is removed, andknob 11 is unscrewed. It is of course readily accessible to the operator and does not need tools for its use. Moreover, we have found that the length oftubing 10 above theknob 11 fills with petrol in use: thus, when theknob 11 is opened this length of full tubing drains and draws out the liquid from the carburettor. This "siphon" effect is more efficient for emptying the carburretor chamber than simple drainage through a drain port, and is effected without inconvenient removal of threaded drain port plugs. - The engine spark plugs are then removed, and the engine turned over by pulling cord 4. This expels water from the engine cylinders through the spark plug openings. 20 pulls or so may be necessary.
- The fuel line is reconnected to flush the carburettors, the fuel use being drained through
tube 10 until no water remains therein. The fuel valves are closed, the engine primed, choke pulled out, new dry plugs fitted. and the engine should restart.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86307626T ATE76163T1 (en) | 1985-10-02 | 1986-10-02 | WATER OUTLET FOR CARBURETOR. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8524231 | 1985-10-02 | ||
GB858524231A GB8524231D0 (en) | 1985-10-02 | 1985-10-02 | I c engine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0219278A2 true EP0219278A2 (en) | 1987-04-22 |
EP0219278A3 EP0219278A3 (en) | 1988-05-04 |
EP0219278B1 EP0219278B1 (en) | 1992-05-13 |
Family
ID=10586040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86307626A Expired - Lifetime EP0219278B1 (en) | 1985-10-02 | 1986-10-02 | Carburettor with drain port |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0219278B1 (en) |
AT (1) | ATE76163T1 (en) |
DE (1) | DE3685291D1 (en) |
GB (1) | GB8524231D0 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001006157A1 (en) * | 1999-07-16 | 2001-01-25 | Ep Barrus Limited | A multi-port valve, and a marine propulsion unit having a multi-port valve |
WO2001020146A1 (en) * | 1999-04-29 | 2001-03-22 | Ep Barrus Limited | A fast post-immersion restart system for a marine propulsion unit |
WO2001020147A1 (en) | 1999-09-10 | 2001-03-22 | E.P. Barrus Limited | A valve, and a marine propulsion unit incorporating a valve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB193331A (en) * | 1922-05-13 | 1923-02-22 | Frederick William Appleton | Improvements in and connected with carburetters for internal combustion engines |
FR742352A (en) * | 1933-03-04 | |||
US4319664A (en) * | 1980-03-03 | 1982-03-16 | Price Ralph J | Remotely controlled oil drain valve |
US4461250A (en) * | 1980-02-06 | 1984-07-24 | Outboard Marine Corporation | Outboard motor with selectively operable drainage system |
US4533331A (en) * | 1982-01-11 | 1985-08-06 | Outboard Marine Corporation | Vent and drain assembly for marine propulsion device |
-
1985
- 1985-10-02 GB GB858524231A patent/GB8524231D0/en active Pending
-
1986
- 1986-10-02 AT AT86307626T patent/ATE76163T1/en not_active IP Right Cessation
- 1986-10-02 EP EP86307626A patent/EP0219278B1/en not_active Expired - Lifetime
- 1986-10-02 DE DE8686307626T patent/DE3685291D1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR742352A (en) * | 1933-03-04 | |||
GB193331A (en) * | 1922-05-13 | 1923-02-22 | Frederick William Appleton | Improvements in and connected with carburetters for internal combustion engines |
US4461250A (en) * | 1980-02-06 | 1984-07-24 | Outboard Marine Corporation | Outboard motor with selectively operable drainage system |
US4319664A (en) * | 1980-03-03 | 1982-03-16 | Price Ralph J | Remotely controlled oil drain valve |
US4533331A (en) * | 1982-01-11 | 1985-08-06 | Outboard Marine Corporation | Vent and drain assembly for marine propulsion device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001020146A1 (en) * | 1999-04-29 | 2001-03-22 | Ep Barrus Limited | A fast post-immersion restart system for a marine propulsion unit |
WO2001006157A1 (en) * | 1999-07-16 | 2001-01-25 | Ep Barrus Limited | A multi-port valve, and a marine propulsion unit having a multi-port valve |
WO2001020147A1 (en) | 1999-09-10 | 2001-03-22 | E.P. Barrus Limited | A valve, and a marine propulsion unit incorporating a valve |
Also Published As
Publication number | Publication date |
---|---|
GB8524231D0 (en) | 1985-11-06 |
EP0219278B1 (en) | 1992-05-13 |
DE3685291D1 (en) | 1992-06-17 |
EP0219278A3 (en) | 1988-05-04 |
ATE76163T1 (en) | 1992-05-15 |
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