EP0149614B1 - Rotor-vergaser zum starten und zum betrieb einer brennkraftmaschine auch bei hohen kraftstofftemperaturen - Google Patents

Rotor-vergaser zum starten und zum betrieb einer brennkraftmaschine auch bei hohen kraftstofftemperaturen Download PDF

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Publication number
EP0149614B1
EP0149614B1 EP84901735A EP84901735A EP0149614B1 EP 0149614 B1 EP0149614 B1 EP 0149614B1 EP 84901735 A EP84901735 A EP 84901735A EP 84901735 A EP84901735 A EP 84901735A EP 0149614 B1 EP0149614 B1 EP 0149614B1
Authority
EP
European Patent Office
Prior art keywords
rotor
fuel
section
diameter
rotation
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
Application number
EP84901735A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0149614A1 (de
Inventor
Rudolf Diener
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.)
KWIK EUROPE LONDON Ltd
Original Assignee
Kwik Europe London Ltd
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 Kwik Europe London Ltd filed Critical Kwik Europe London Ltd
Priority to AT84901735T priority Critical patent/ATE33170T1/de
Publication of EP0149614A1 publication Critical patent/EP0149614A1/de
Application granted granted Critical
Publication of EP0149614B1 publication Critical patent/EP0149614B1/de
Expired 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/06—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the pressurisation of the fuel being caused by centrifugal force acting on the 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/16—Carburettors having continuously-rotating bodies, e.g. surface carburettors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0606—Fuel temperature

Definitions

  • the invention relates to a rotor carburetor, the rotor of which is equipped with an impeller, is rotatably arranged around a fuel supply pipe immersed in a contactless manner in a central bore of the rotor body and has a fuel outlet opening located within the rotor, and has a lateral fuel outlet bore for supply with fuel is connected to a fuel delivery channel leading to the fuel outlet opening of the supply pipe in the rotor body, which fuel delivery channel has an inlet opening which is coaxial with the outlet opening of the fuel delivery pipe and is opposite to it without contact and has an inlet section which is radially in at its downstream end the remaining part of the fuel delivery channel leading to the outlet bore opens.
  • a rotor carburetor is known from GB-A-2 058 930.
  • US-A-2 823 906 describes a rotor carburetor in which the rotor contains a cylindrical fuel chamber into which a fuel supply pipe is immersed from above and from which a plurality of radial nozzle ducts lead away from the vicinity of the bottom and from which with the rotor rotating, fuel is sprayed against a fixed atomizing ring.
  • the rotor contains a chamber which is heart-shaped in longitudinal section and into which air is introduced from above through a duct and through a second duct arranged therein, and several from the bottom region thereof e.g. B. lead obliquely downwards between the wings of the impeller directed nozzle channels to the outside.
  • the rotor contains a bore which is coaxial with its axis of rotation, into which a fixedly arranged fuel feed pipe is immersed, and in the axial direction above the outlet opening of the fuel feed pipe at least one side screen or nozzle which is connected to a through a connecting channel cylindrical fuel chamber located in the rotor just below the outlet opening of the feed pipe and coaxial with the rotor axis of rotation is connected, the diameter of which is somewhat smaller than the diameter of the outlet opening.
  • the inlet section is designed to lead obliquely away from the rotor axis of rotation in the radial direction and its center line downstream of the inlet opening includes the rotor axis of rotation intersecting with it at an acute angle.
  • the rotor-carburetor according to the invention not only maintained the previously low pollutant values in the exhaust gases, but also reduced the pollutant peak values that occurred especially when the throttle valve was closed quickly.
  • the inclined inlet section of the fuel delivery channel means a certain amount of additional mechanical effort, which, however, means In view of the result achieved, it should be assessed as minor.
  • the rotor 1 shown in the drawing of a rotor gasifier has a cylindrical rotor body 2, for. B. made of aluminum, with molded on its two end faces 3a, 3b bearing journals 4a, 4b on which the ball bearings 5a, 5b are placed.
  • the ball bearings 5a, 5b are arranged in bearing heads 6a, 6b, which are held by radial struts 7a, 7b, of which only one is shown in the drawing, in a bushing not shown in the drawing.
  • the sleeve with the rotor 1 rotatable about its longitudinal axis as the axis of rotation 8 can be arranged in the intake duct of an internal combustion engine.
  • a central bore 9 is guided through a bearing journal 4a and extends approximately to the center of the rotor body 2.
  • the bearing head 6a arranged at the open end of the bore 9 carries a fuel supply pipe 10 which is coaxial with the axis of rotation 8 and which contacts the central bore 9 without contact protrudes so that there is a narrow annular gap 14 between the fuel supply pipe 10 and the wall of the bore 9 and the rotor body 2 can rotate freely around the fuel supply pipe 10.
  • the fuel supply pipe 10 is connected to a fuel supply channel 15 which is guided through one of the struts 7a of the bearing head 4a and is connected to a conventional fuel source, such as a float.
  • a cylindrical ring 16 which contains a lateral fuel outlet bore 17, is pressed tightly onto the rotor body 2 on the upper end face 3 a located in the region of the bore 9.
  • This fuel outlet bore 17 is preferably formed in a ruby orifice or nozzle 18 which is inserted into the ring 16.
  • the fuel outlet bore 17 is connected by a fuel delivery channel 19 to the outlet opening 11 of the fuel supply pipe 10, so that when the rotor 1 is rotating, fuel is delivered from the delivery pipe 10 through the delivery channel 19 to the outlet bore 17 as a result of the acting centrifugal force .
  • the fuel delivery channel 19 has an inlet section 20 leading away from its inlet opening 21 downstream and in the radial direction from the rotor axis of rotation 8, which includes an acute angle a with the rotor axis of rotation 8 and intersects the axis of rotation 8 downstream of the inlet opening 21.
  • the further course of the delivery channel 19 is in itself arbitrary.
  • the radial end section 19c has the largest diameter and the inlet section 20 has the smallest diameter, while the diameters of the intermediate channel sections have intermediate values. It has proven to be advantageous to connect the feed channel part leading away from the inlet section 20, ie here the radial starting section 19a, to the inlet section 20. that the axis of rotation 8 intersects the inlet section 20 at a point C that is substantially closer to the inlet opening 21 of the inlet section 20 than the connection point 22.
  • the bottom of the central bore 9 has a preferably conical elevation 23, in the end face of which the inlet opening 21 of the inlet section 20 lies, and accordingly the fuel supply pipe 10 has a conical recess 12 at the outlet end, in the bottom of which the outlet opening 11 lies, so that the outlet opening 11 and the inlet opening 21 are connected to the annular gap 14 by a narrow, essentially conical gap 13 between the elevation 23 and the outlet end of the fuel supply pipe 10.
  • the rotor body 2 expediently has a continuous central bore 9a which is sealed off at one end by a locking pin 24 which has the conical elevation 23 and contains the inlet section 20 of the conveying channel.
  • an impeller 25 is fastened on the rotor body 2 with a sleeve 26 which, between the outer surface of the rotor body 2 and the inner wall 27 of the sleeve 26, seals a seal which is sealed off above the fuel outlet bore 17 and widens conically downwards and forms an open annular space 28 below through bores 29 and which ends below the bores in an atomizing ring 30 with a spray edge 31.
  • a small amount of fuel is branched off from the fuel flow, which fills the annular gap 14 between the fuel supply pipe 10 and the inner wall of the rotor body 2 at least in a lower region and thus the fuel flow system against the ingress of air cordoned off outside.
  • This flow system essentially corresponds to that of the earlier rotor carburettors, in which, as mentioned at the beginning, the fuel channel leading to the outlet bore 17 was connected to a cylindrical fuel chamber located downstream of the outlet opening 11 of the feed pipe 10 and coaxial with the rotor axis of rotation 8. It is understandable that with such a flow system, when operating with hot fuel, difficulties can easily arise because of the vapor bubbles settling at any point along the flow path. It is surprising, however, that these difficulties could essentially be eliminated by providing the inclined inlet section 20 instead of the cylindrical fuel chamber coaxial with the rotor axis of rotation. An explanation for this cannot be found.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
EP84901735A 1983-07-12 1984-05-04 Rotor-vergaser zum starten und zum betrieb einer brennkraftmaschine auch bei hohen kraftstofftemperaturen Expired EP0149614B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84901735T ATE33170T1 (de) 1983-07-12 1984-05-04 Rotor-vergaser zum starten und zum betrieb einer brennkraftmaschine auch bei hohen kraftstofftemperaturen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3838/83A CH663823A5 (de) 1983-07-12 1983-07-12 Rotor-vergaser zum starten und zum betrieb einer brennkraftmaschine auch bei hohen kraftstofftemperaturen.
CH3838/83 1983-07-12

Publications (2)

Publication Number Publication Date
EP0149614A1 EP0149614A1 (de) 1985-07-31
EP0149614B1 true EP0149614B1 (de) 1988-03-23

Family

ID=4264561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84901735A Expired EP0149614B1 (de) 1983-07-12 1984-05-04 Rotor-vergaser zum starten und zum betrieb einer brennkraftmaschine auch bei hohen kraftstofftemperaturen

Country Status (6)

Country Link
EP (1) EP0149614B1 (cs)
CH (1) CH663823A5 (cs)
CS (1) CS255860B2 (cs)
DE (1) DE3470080D1 (cs)
IT (1) IT1176279B (cs)
WO (1) WO1985000412A1 (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208802A1 (de) * 1985-07-17 1987-01-21 Kwik Europe London Limited Lambda-Korrekturvorrichtung an einem Rotorvergaser für Brennkraftmaschinen
US4725385A (en) * 1986-06-30 1988-02-16 Kwik Products International Corporation Turbine rotor assembly for a rotor-type carburetor
AU2439792A (en) * 1992-08-21 1994-03-15 Beat A. Frei Controlled mixture formation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2536996A1 (de) * 1975-07-28 1977-02-10 Autoelektronik Ag Vergaservorrichtung fuer einen verbrennungsmotor
US4283358A (en) * 1979-08-02 1981-08-11 Autoelektronik Ag Rotor-carburetor having an idling mixture arrangement for internal combustion engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187264A (en) * 1975-05-09 1980-02-05 Rudolf Diener Carburetor for an internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2536996A1 (de) * 1975-07-28 1977-02-10 Autoelektronik Ag Vergaservorrichtung fuer einen verbrennungsmotor
US4283358A (en) * 1979-08-02 1981-08-11 Autoelektronik Ag Rotor-carburetor having an idling mixture arrangement for internal combustion engines

Also Published As

Publication number Publication date
IT8421287A0 (it) 1984-06-07
EP0149614A1 (de) 1985-07-31
CS255860B2 (en) 1988-03-15
IT1176279B (it) 1987-08-18
DE3470080D1 (en) 1988-04-28
WO1985000412A1 (fr) 1985-01-31
IT8421287A1 (it) 1985-12-07
CH663823A5 (de) 1988-01-15

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