US2029666A - Carburetor - Google Patents

Carburetor Download PDF

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Publication number
US2029666A
US2029666A US656011A US65601133A US2029666A US 2029666 A US2029666 A US 2029666A US 656011 A US656011 A US 656011A US 65601133 A US65601133 A US 65601133A US 2029666 A US2029666 A US 2029666A
Authority
US
United States
Prior art keywords
casing
fuel
jet tube
air
air nozzle
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
US656011A
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English (en)
Inventor
Markwart Walter
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.)
MARKLIN APPARATEBAU GmbH
MARKLIN APPBAU GmbH
Original Assignee
MARKLIN APPBAU GmbH
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 MARKLIN APPBAU GmbH filed Critical MARKLIN APPBAU GmbH
Application granted granted Critical
Publication of US2029666A publication Critical patent/US2029666A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02M19/03—Fuel atomising nozzles; Arrangement of emulsifying air conduits
    • 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
    • F02M11/00—Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve
    • F02M11/08—Register carburettors with throttling valve movable transversally to air passage
    • 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
    • F02M33/00—Other apparatus for treating combustion-air, fuel or fuel-air mixture
    • F02M33/02—Other apparatus for treating combustion-air, fuel or fuel-air mixture for collecting and returning condensed fuel
    • 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
    • F02M33/00—Other apparatus for treating combustion-air, fuel or fuel-air mixture
    • F02M33/02—Other apparatus for treating combustion-air, fuel or fuel-air mixture for collecting and returning condensed fuel
    • F02M33/04—Other apparatus for treating combustion-air, fuel or fuel-air mixture for collecting and returning condensed fuel returning to the intake passage
    • 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
    • F02M7/23—Fuel aerating devices
    • 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
    • F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
    • F02M9/02—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having throttling valves, e.g. of piston shape, slidably arranged transversely to the passage
    • 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
    • F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
    • F02M9/02—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having throttling valves, e.g. of piston shape, slidably arranged transversely to the passage
    • F02M9/06—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having throttling valves, e.g. of piston shape, slidably arranged transversely to the passage with means for varying cross-sectional area of fuel spray nozzle dependent on throttle position

Definitions

  • the invention relates 'to a jet carburetor in which a preliminary mixture is fed by way of an atomizing chamber to the induction channel and an over-rich mixture is formed in the atomlzing tro'dnced' her from be low against an a her. in manner no tion of the entire ca also r ndered pcssioie lor the important component parts of the apparatus to be dismounted and insp cted at any
  • the eci'ied drawings show two typical embodiinents oi the subject oi the invention in iongitudinal section.
  • Fig. l shows a carburetor according to the invention without provision for the supply of checking air
  • the invention consists in a particularly advantageous construction of the carburetor in which the air nozzle pipe is disposed concentrically around the jet tube and is surrounded by a further concentric casing which is connected at the bottom (for instance by holes) with the extension oi the atomizing chamber.
  • the carburetor operates with an auxiliary air admission for checking the negative pressure at the nozzle of the jet tube, the necessary for this purpose may likewise be disposed concern trically to the jet and b i space between thejet tube all t .asdngs disposed around in-the f concentric t bular members, ti
  • Fig. i2v shows a form of construction with provision for the supply of checking air.
  • W in the carburetor according to Fig. 1 the de livery pipe 0 forming the end of the atomizing chamber i projects into the induction channel m.
  • This delivery pipe on the side remote from the entering current of suction air is provided with the openings 10..
  • the delivery pipe is enclosed by the throttle valveq which, by means of the rod, 1', can be adjusted according to the desired conditions of operation.
  • Theactual atomizing chamber 2 extends into the attachment s otthe induction channel casing m.
  • This attachment is bored out cylindrically and provided at the bottom with a screwthread 3?.
  • the actual air nozzle pipe Into a bore of the air nozzle pipe f there is introduced the jet tube a in 'such a manner that between the casing of the jet tube extension between the casing h and the or,
  • the cylin drical casing Over the air nozzle pipe 1 is placed the cylin drical casing it provided at the bottom with openings 7a through which the unatomized fuel which collects in the bottom of the atomizing chamber 1'. can return into the annular space benozzle pipe bore which latter is closed by a plug y.
  • This space a is connected with the passage 2 20 by the arm a leading to the float chamber.
  • a is the jet tube and f the air nozzle pipe over which the casing h which is comically shaped at the top is placed.
  • This casing is also provided with the openings k at the bottom, through which the non-atomized fuel 2 aoaaocc from the extension of the atomizing chamber i 4 can fiow back for atomization.
  • a concentric sleeve 12 The an- 5 nular space left between the sleeve b and the jet tube a is connected at its upper end with the outer air and throughout its length, by the openings c, with the interior of the jet tube a.
  • the checking air is supplied to the annular space between the jet tube a and the sleeve b, by an annular duct 6, which duct is'closed tmthe air nozzle pipe I by a casing d.
  • the carbureting air is admitted throughwthe port g.
  • the jet tube a is a 4 separate element from the casing d and can be removed by unscrewing from the base 1.
  • the fuel'in the jet tube a and also in the annular space between the jet tube a and' theqsleeve b is at the same level as that oi-the fuel in the float chamber S as indicated in the drawings by the chain line.
  • negative pressure prevails in the atomizing chamber i after the throttle valve tube a whereby a pre-mixing and preliminary atomization of the fuel takes place and to a certain extent a fuel foam is formed.
  • the function of the checking air can be seen 35 from the following:-
  • the negative pressure in the jet tube a sucks the fuel through the calibrated plugn.
  • the air of atmospheric pressure which enters through the holes 0 weakens the negative pressure at the 40 nozzle and thereby reduces the quantity of fuel supplied by it.
  • the result is that when the thrct- .tle valve q is opened and when the fuel located in the jet tube a and the surrounding annular space is sucked up, the holes 0 are gradually freed 45 and when the throttle is opened the amount supplied by the main no e is checked. with progressive opening of the throttle valve without the checking air the mixture would become too rich, which assumption is based onthe laws govern- 50 ing the outflow of liquids.
  • the fuel rises in the annular space between the jet tube a and the casing'b, and collects here for the subsequent opening of the throttle,
  • the already 55 preliminarily atomized fuel issuing from the jet tube a is further mixed with the air flowing from the air nozzle pipe I and passes by way of the chocked opening of the casing it into the atomi zing chamber i and through the holes p into the induction channel m.
  • the delivery pipe 0 which projects into the induction chamber m preferably opens to the atomizing chamber in such a manner that theinternal diameter of the delivery pipe is greater than the diameter of the opening at the upper conically shaped end of the ca s-.
  • the preliminary mixture of fuel and as which is accumulated in the atomizing chamber i can arrivein the induction-channel 1;: without throttling.
  • a carburetor the combination of an induction channel, a mixture delivery pipe provided with holes opening into the induction channel, an atomizing chamber in connection with 5 the open end of the delivery pipe, a float chamber communicating with the atomizing chamber through a calibrated orifice, an atomizing jet tube adapted to receive fuel from the float chamber through said calibrated orifice and dis- 1o cha ing the fuel in said atomizing chamber, an air nozzle pipe disposed concentrically around the jet tube, and a concentric casing surrounding the air nozzle pipe and having openings at its lower end connecting the bottom of the atomiz- 15 ing chamber with the annular space between the casing and the air nozzle pipe, said casing terminating at its upper end in a conical member.
  • the arrangement that the casing disposed around the jet tube is in the form of concentric tubular members, the lower flanges of which rest on one another stepwise and are pressed by a plug sealing the bottom of the atomizing chamber, against an abutment on the atomizing chamber.
  • means for checking the negative pressure at the end of the jet tube comprising a concentric sleeve between the jet tube and the -air nozzle pipe forming an annular space between'said sleeve and the jet tube and which is connected at the upper end with the outer air and over its length by openingswith the interior of the jet tube, and in which the casing and the sleeve disposed around the jet tube are in the form of concentric tubular members, the lower flanges of which rest on one another step-wise and are pressed by a closure sealing the bottom' of theatomizing chamber against an abutment on said chamber.
  • a carburetor in a carburetor the combination of an induction channel, a mixture delivery pipe provided with holes openinginto the induction channel and having an'atomizing chamber therein, a float chamber communicating with the atomizing chamber through a calibrated orifice, an atomizing jet tube adapted to receive fuel from the float chamber through said calibrated orifice and discharging the fuel in saidatomizing chamber, 69 an air nozzle pipe disposed concentrically around the jet tube, and a concentric casing surround ing the air nozzle pipe and having openings at its lower end connecting the bottom of the atomizing chamber with the annular space between the casing and the air nozzle pipe, said casing terminating at its upper end in an apertured conical member extending over the end of the let tube.

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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)
  • Fuel-Injection Apparatus (AREA)
US656011A 1932-05-25 1933-02-09 Carburetor Expired - Lifetime US2029666A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE397778X 1932-05-25

Publications (1)

Publication Number Publication Date
US2029666A true US2029666A (en) 1936-02-04

Family

ID=6397264

Family Applications (1)

Application Number Title Priority Date Filing Date
US656011A Expired - Lifetime US2029666A (en) 1932-05-25 1933-02-09 Carburetor

Country Status (4)

Country Link
US (1) US2029666A (enrdf_load_html_response)
FR (1) FR750164A (enrdf_load_html_response)
GB (2) GB318644A (enrdf_load_html_response)
NL (2) NL30068C (enrdf_load_html_response)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460419A (en) * 1943-04-14 1949-02-01 Metal Products Corp Outboard motor
US2596736A (en) * 1946-09-24 1952-05-13 John A Templeton Fuel supply system
US2655357A (en) * 1952-01-03 1953-10-13 Joseph A Steffen Injector carburetor
US3682449A (en) * 1970-03-11 1972-08-08 Alpha Sev Carburetor and dash pot control therefor
US4093549A (en) * 1977-01-31 1978-06-06 Wilson Harold L Aerator sewage tank
US5776377A (en) * 1996-09-12 1998-07-07 Blythe International Marketing, Inc. Metering block for carburetors
IT201600098911A1 (it) * 2016-10-03 2018-04-03 Magneti Marelli Spa Valvola a farfalla per un motore a combustione interna

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510914A (en) * 1981-07-27 1985-04-16 Purser Ben D Apparatus and method for preparing a mixture of combustible liquid fuel and air

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460419A (en) * 1943-04-14 1949-02-01 Metal Products Corp Outboard motor
US2596736A (en) * 1946-09-24 1952-05-13 John A Templeton Fuel supply system
US2655357A (en) * 1952-01-03 1953-10-13 Joseph A Steffen Injector carburetor
US3682449A (en) * 1970-03-11 1972-08-08 Alpha Sev Carburetor and dash pot control therefor
US4093549A (en) * 1977-01-31 1978-06-06 Wilson Harold L Aerator sewage tank
US5776377A (en) * 1996-09-12 1998-07-07 Blythe International Marketing, Inc. Metering block for carburetors
IT201600098911A1 (it) * 2016-10-03 2018-04-03 Magneti Marelli Spa Valvola a farfalla per un motore a combustione interna
EP3301289A1 (en) * 2016-10-03 2018-04-04 Magneti Marelli S.p.A. Throttle valve for an internal combustion engine
CN107893705A (zh) * 2016-10-03 2018-04-10 马涅蒂-马瑞利公司 用于内燃发动机的节流阀
CN107893705B (zh) * 2016-10-03 2021-08-06 马涅蒂-马瑞利公司 用于内燃发动机的节流阀

Also Published As

Publication number Publication date
GB318644A (enrdf_load_html_response) 1930-12-08
FR750164A (fr) 1933-08-05
GB397778A (en) 1933-08-31
NL30068C (enrdf_load_html_response)
NL25556C (enrdf_load_html_response)

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