US1639396A - Carburetor for internal-combustion engines - Google Patents

Carburetor for internal-combustion engines Download PDF

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Publication number
US1639396A
US1639396A US25286A US2528625A US1639396A US 1639396 A US1639396 A US 1639396A US 25286 A US25286 A US 25286A US 2528625 A US2528625 A US 2528625A US 1639396 A US1639396 A US 1639396A
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channel
nozzle
venturi
valve
air
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US25286A
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Carlsson Carl
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    • 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
    • F02M19/08—Venturis
    • F02M19/088—Whirl devices and other atomising means in or on the venturi walls
    • 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
    • F02M19/02—Metering-orifices, e.g. variable in diameter
    • F02M19/0235—Arrangements of several spray nozzles not provided for in F02M3/00 or F02M11/00
    • 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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves

Definitions

  • the present invention consists of a car buretor, or a devicefor int mately mlxing hquld fuel with air, fornternal combustion engines or the like, of such construction,
  • Fig. 2 a view from above of the piece (10 of Fig. 1), called the venturi, and Fig. 3 a longitudinal section of the valve (the cock valve 9 of Fig. 1).
  • the device of the invention consists of a float chamber or receptacle for the fuel 1, a chiefiy cylindrical casing 2, communicating with the float chamber 1 by means of an inlet 3, leading to a vertical channel it in the wall of the casing 2 and closed at its bottom by a screw stopper.
  • a chiefiy cylindrical casing 2 communicating with the float chamber 1 by means of an inlet 3, leading to a vertical channel it in the wall of the casing 2 and closed at its bottom by a screw stopper.
  • another channel 5 branches out, running, generally horizontally, into the centre of the device and communicating with an upright nozzle 6, situated in the middle of thecentral cavity of the casing 2.
  • This nozzle 6 is at its upper or outlet end provided with a choke-tube 7 in the shape of a hollow cylinder whose walls are thickest at the. middle and narrowing out towards both ends of the cylinder.
  • a valve 9 In the upper end of said channel 4 is provided another nozzle 8, opening into a valve 9, generally a cock valve, which, communicates with an annular channel 11, cut out in the outer cylindrical surface of the venturi 10.
  • the casing? has further an air inlet 13, conveniently on thes'ide opposite to the float chamber, and at the top an outlet 14 for the mixture'of air and fuel. This outlet is controlled by a throttle valve 15, which by means of a rod 16 or some other known device is connected with the cock valve 9 in such manner, that both valves open and shut simultaneously.
  • valve 9 is generally cylindrical, Fig. 3, and at one end partly cut out, 17, in order to communicate;when" in a certain position or when it is open,- with the annular channel 11.
  • the other-end, 18, of this valve is open to let in air, and the cut out, 17, allows the e'n'tranceof the nozzle8.
  • a I y i The construction of the device being thus fully described, it works in the following manner; The oil or other liquid fuel runs from the float chamber 1 through the outlet 3 into the channel 4. There it divides, part ofit passing through the channel 5 and the nozzle 6, being when leaving the latter finely dispersed by the air sucked in from the air inIet lS through the cylindrical choke-tube 7 between the brackets.
  • a carburetor for mixing liquid fuel with air consisting of a preferably chiefly cylindrical, hollow casing with an upright nozale in its centre, and provided with an air inlet and an outlet, said nozzle communicating withya' float chamber by means of a channel; the cavity of said hollow casing being narrowed around the outlet opening of said upright nozzle by means of a separate venturi; said channel from the float chamber to said upright nozzle branchi-ng out into a channel in the wall of the i iii) said hollow casing, the last named channel opening by means of a nozzle into the interior of a hollow valve that controls a channel communicating with holes in the said venturi, said holes opening into the interior of the venturi.
  • a carburetor for mixing liquid fuel with air consisting of a preferably chiefly cylindrical, hollow casing with an upright nozzle in its centre, and provided with an air inlet and an outlet, said nozzle communieating with a float chamber by means of a channel; the cavity of said hollow casing eing narrowed around the outlet opening of said upright nozzle by means of a separate venturi; in combination with a choketube open at each end, and surrounding and fixed to the upper end of said upright nozzle and whose inside diameter is widening towards each end; said channel from the float chamber to said upright nozzle branching out into a channel in the wall of the said hollow casing, the last named channel opening by means of a nozzle into the interior of a hollow valve that controls a channel communicating with holes in the said venturi, said holes opening into the interior of the venturi.
  • a carburetor for mixing liquid fuel with air consisting of a preferably chiefly cylindrical, hollow casing with an upright nozzle in its centre, and provided with an air inlet and an outlet, said nozzle communicating with a float chamber by means of a channel; the cavity of said hollow casing being narrowed around the outlet opening of said upright nozzle by means of a separate venturi, in combination with a choke-tube open at each end, and surrounding and fixed to the upper end of said upright nozzle and whose inside diameter is widening towards each end; said channel from the float chamber to said upright nozzle branching out into a channel in the wall of the said hollow casing, the last named channel opening by means of a nozzle into the interior of a hollow cylindrical cock valve that controls a channel leading to an annular channel in the said venturi by means of a cut-out in the'wall of the valve, said annular channel communicating with holes in the said venturi, said holes opening into the interior of the venturi.
  • a carburetor for mixing liquid fuel with airconsisting of a cylindrical, hollow casing with an upright nozzle in its centre, and rovided with an air inlet and an outlet, said nozzle communicating by means of a hollow cylinder open at each end, surrounds ing and fixed to the upper end of said upright nozzle, the walls of said cylinder being thicker in the middle part and narrowing out towards each end, said channel from the float chamber to said upright nozzle branching out into a vertical channel in the wall of said hollow casing, said vertical channel opening, by means of a nozzle, into a cylindrical cock valve, this valve communicating, when open, with an annular channel in said venturi, said annular channel surrounding the top of said upright nozzle, said valve being provided with a cut-out for the communication with said annular channel and open to the outer air its other end, said annular channel having a number of openings into the upper interior part of said venturi.
  • a carburetor for mixing liquid fuel with air consisting of a preferably chiefly cylindrical, hollow casing with an upright nozzle in its centre, and provided with an air inlet and an outlet, said nozzle communieating by means of a channel, with a float chamber, the cavity of said hollow casing being narrowed around the outlet opening of said upright nozzle by means of a separate venturi, in combination with a choke tube in the shape of a hollow cylinder open at each end, surrounding and fixed to the upper end of said upright nozzle, the walls of said cylinder being thicker in the middle part and narrowing out towards each end, said channel from the float chamber to said upright nozzle branching out into a vertical channel in the wall of said hollow casing, said vertical channel opening, by means of a nozzle into a cylindrical cock valve, this valve communicating, when open, with an annular channel in said venturi, said annular channel surrounding the top of said upright nozzle, said cock valve. provided with a cut-out for the communication with said annular channel and open to the

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Description

.Aug. 16, 1927.
1,639,396 C. CARLSSON CARBURETOR FOR INTERNAL COMBUSTION ENGINES Filed Abril 23, 1925 Patented Aug. 16, 1927.
UNETEDJ STATES CARL Gan sta, or smecxaom, swan.
CARBU'RETORFOR mgrnnnan-oorinus'rron ENGINES.
Application filed April 23,1925, Serial No. 25,286, and in Sweden February 21, 1525.
The present invention consists of a car buretor, or a devicefor int mately mlxing hquld fuel with air, fornternal combustion engines or the like, of such construction,
entire device, Fig. 2 a view from above of the piece (10 of Fig. 1), called the venturi, and Fig. 3 a longitudinal section of the valve (the cock valve 9 of Fig. 1).
Referring to theFig. 1, the device of the invention consists of a float chamber or receptacle for the fuel 1, a chiefiy cylindrical casing 2, communicating with the float chamber 1 by means of an inlet 3, leading to a vertical channel it in the wall of the casing 2 and closed at its bottom by a screw stopper. From the side of this channel 4- another channel 5 branches out, running, generally horizontally, into the centre of the device and communicating with an upright nozzle 6, situated in the middle of thecentral cavity of the casing 2. This nozzle 6 is at its upper or outlet end provided with a choke-tube 7 in the shape of a hollow cylinder whose walls are thickest at the. middle and narrowing out towards both ends of the cylinder. This choke-tube 7. is fixed to the top of the nozzle 6 by means of thin brackets. In the upper end of said channel 4 is provided another nozzle 8, opening into a valve 9, generally a cock valve, which, communicates with an annular channel 11, cut out in the outer cylindrical surface of the venturi 10. The casing? has further an air inlet 13, conveniently on thes'ide opposite to the float chamber, and at the top an outlet 14 for the mixture'of air and fuel. This outlet is controlled by a throttle valve 15, which by means of a rod 16 or some other known device is connected with the cock valve 9 in such manner, that both valves open and shut simultaneously. The cock,
valve 9 is generally cylindrical, Fig. 3, and at one end partly cut out, 17, in order to communicate;when" in a certain position or when it is open,- with the annular channel 11. The other-end, 18, of this valve is open to let in air, and the cut out, 17, allows the e'n'tranceof the nozzle8. a I y i The construction of the device being thus fully described, it works in the following manner; The oil or other liquid fuel runs from the float chamber 1 through the outlet 3 into the channel 4. There it divides, part ofit passing through the channel 5 and the nozzle 6, being when leaving the latter finely dispersed by the air sucked in from the air inIet lS through the cylindrical choke-tube 7 between the brackets. Another part of the fuel inthe channel {L passes through the nozzle 8 into the valve 9 and, if this valve is open, that is with the cut out 17 turned to the right (in the Fig. 1), into the annular cliannel 11 together with air, sucked in through the open end18 of thevalve 9. From there it is forced out through the openings 12 of the venturi 1O. These openings preferably being widening outwards, from the annular chamber, the mixture of air and fuel is very well mingl'e:d. This mixture is .here met by the air fronith-e inlet 13, having passed outside of the cylindrical choke-tube 7, and by themixmr'e' of and fuel coming from the nozzle 6. Bythis arrangement is effected an exceedingly thorough and intimate mingling of the fuel and the air and at the same time a perfect evaporation of the liquid fuel, pjarticularly'well suited to the requirements of an internal combustion engine.
The inventlon is susceptible to various changes in itslform, proportions, and minor detailsbf construction, and the right is herein reserved to make such changes as properly fall within the, scope of the appended claims, v
,Having described the invention, what I claim is: I
l. A carburetor for mixing liquid fuel with air ,,consisting of a preferably chiefly cylindrical, hollow casing with an upright nozale in its centre, and provided with an air inlet and an outlet, said nozzle communicating withya' float chamber by means of a channel; the cavity of said hollow casing being narrowed around the outlet opening of said upright nozzle by means of a separate venturi; said channel from the float chamber to said upright nozzle branchi-ng out into a channel in the wall of the i iii) said hollow casing, the last named channel opening by means of a nozzle into the interior of a hollow valve that controls a channel communicating with holes in the said venturi, said holes opening into the interior of the venturi.
2. A carburetor for mixing liquid fuel with air, consisting of a preferably chiefly cylindrical, hollow casing with an upright nozzle in its centre, and provided with an air inlet and an outlet, said nozzle communieating with a float chamber by means of a channel; the cavity of said hollow casing eing narrowed around the outlet opening of said upright nozzle by means of a separate venturi; in combination with a choketube open at each end, and surrounding and fixed to the upper end of said upright nozzle and whose inside diameter is widening towards each end; said channel from the float chamber to said upright nozzle branching out into a channel in the wall of the said hollow casing, the last named channel opening by means of a nozzle into the interior of a hollow valve that controls a channel communicating with holes in the said venturi, said holes opening into the interior of the venturi.
3. A carburetor for mixing liquid fuel with air, consisting of a preferably chiefly cylindrical, hollow casing with an upright nozzle in its centre, and provided with an air inlet and an outlet, said nozzle communicating with a float chamber by means of a channel; the cavity of said hollow casing being narrowed around the outlet opening of said upright nozzle by means of a separate venturi, in combination with a choke-tube open at each end, and surrounding and fixed to the upper end of said upright nozzle and whose inside diameter is widening towards each end; said channel from the float chamber to said upright nozzle branching out into a channel in the wall of the said hollow casing, the last named channel opening by means of a nozzle into the interior of a hollow cylindrical cock valve that controls a channel leading to an annular channel in the said venturi by means of a cut-out in the'wall of the valve, said annular channel communicating with holes in the said venturi, said holes opening into the interior of the venturi.
4. A carburetor, for mixing liquid fuel with airconsisting of a cylindrical, hollow casing with an upright nozzle in its centre, and rovided with an air inlet and an outlet, said nozzle communicating by means of a hollow cylinder open at each end, surrounds ing and fixed to the upper end of said upright nozzle, the walls of said cylinder being thicker in the middle part and narrowing out towards each end, said channel from the float chamber to said upright nozzle branching out into a vertical channel in the wall of said hollow casing, said vertical channel opening, by means of a nozzle, into a cylindrical cock valve, this valve communicating, when open, with an annular channel in said venturi, said annular channel surrounding the top of said upright nozzle, said valve being provided with a cut-out for the communication with said annular channel and open to the outer air its other end, said annular channel having a number of openings into the upper interior part of said venturi.
5. A carburetor for mixing liquid fuel with air, consisting of a preferably chiefly cylindrical, hollow casing with an upright nozzle in its centre, and provided with an air inlet and an outlet, said nozzle communieating by means of a channel, with a float chamber, the cavity of said hollow casing being narrowed around the outlet opening of said upright nozzle by means of a separate venturi, in combination with a choke tube in the shape of a hollow cylinder open at each end, surrounding and fixed to the upper end of said upright nozzle, the walls of said cylinder being thicker in the middle part and narrowing out towards each end, said channel from the float chamber to said upright nozzle branching out into a vertical channel in the wall of said hollow casing, said vertical channel opening, by means of a nozzle into a cylindrical cock valve, this valve communicating, when open, with an annular channel in said venturi, said annular channel surrounding the top of said upright nozzle, said cock valve. provided with a cut-out for the communication with said annular channel and open to the outer air at its other end, said annular channel having a number of openings into the upper interior part of said venturi, said'openings widening out from the annular channel.
In testimony whereof I have hereunto affixed my signature.
CARL CA RLSSON
US25286A 1925-02-21 1925-04-23 Carburetor for internal-combustion engines Expired - Lifetime US1639396A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190085800A1 (en) * 2016-03-30 2019-03-21 Bueng Nam YOO Fluid accelerator for internal combustion enginge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190085800A1 (en) * 2016-03-30 2019-03-21 Bueng Nam YOO Fluid accelerator for internal combustion enginge

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