EP0205759A2 - Carburateur pour moteur à combustion interne - Google Patents

Carburateur pour moteur à combustion interne Download PDF

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Publication number
EP0205759A2
EP0205759A2 EP86103114A EP86103114A EP0205759A2 EP 0205759 A2 EP0205759 A2 EP 0205759A2 EP 86103114 A EP86103114 A EP 86103114A EP 86103114 A EP86103114 A EP 86103114A EP 0205759 A2 EP0205759 A2 EP 0205759A2
Authority
EP
European Patent Office
Prior art keywords
chamber
valve
channel
engine
channels
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
Application number
EP86103114A
Other languages
German (de)
English (en)
Other versions
EP0205759A3 (en
EP0205759B1 (fr
Inventor
Günter Dipl.-Ing. Härtel
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0205759A2 publication Critical patent/EP0205759A2/fr
Publication of EP0205759A3 publication Critical patent/EP0205759A3/de
Application granted granted Critical
Publication of EP0205759B1 publication Critical patent/EP0205759B1/fr
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
    • F02M5/00—Float-controlled apparatus for maintaining a constant fuel level
    • F02M5/08—Float-controlled apparatus for maintaining a constant fuel level having means for venting float chambers

Definitions

  • the invention relates to a carburetor for internal combustion engines according to the preamble of claim 1.
  • Such a carburetor is described in DE-OS 25 34 685 and there has a device for switching the float chamber, which is dependent on the fuel supply pressure, for switching the float chamber from external to internal ventilation, the internal ventilation being achieved through a channel connected to the intake duct of the carburetor.
  • the device known from the said publication is therefore not readily transferable to the carburetor equipped with a float chamber ventilated via two channels, since no means for controlling a plurality of channels are shown.
  • the object of the invention is therefore to equip a generic carburetor with a device which enables the combination of both measures.
  • the invention has made fault-free hot idling and hot start operation possible with effective limitation of the evaporation emission, so that the environmental impact can be reduced.
  • a carburetor 1 shows a carburetor 1, the intake duct 2 for air of which has a throttle valve 3, a Venturi section 4 with a pre-atomizer 5 for the introduction of the fuel and an air valve 6.
  • the intake duct 2 continues in a section 7 of a filter chamber of an air filter, not shown.
  • the carburetor 1 has further systems which are not shown. Upstream of the venturi section 4, a channel 8 opens into the intake channel section 9 there and a further channel 10 into the intake channel section 7 of the filter chamber.
  • Fig. 2 shows an outbreak of the carburetor 1, from which the arrangement of a slide rod 11 in a housing bore 12 can be seen.
  • the slide rod 11 is connected to a membrane 13, which separates a ventilated chamber 15 into a gas space 14 above the fuel level of a float chamber opposite a cover chamber 16, the cover chamber 16 being connected via a connecting line 17 to the fuel supply line 18 leading into the float chamber and with the pressure prevailing in this supply line 18 is applied.
  • the pressure drops in the fuel supply line 18, which generally has a return connection 28 to the fuel tank, so that the spring 19 moves the slide rod 11 into the first end position (FIG. 3).
  • the slide rod 11 closes the channels 8, 10 connected to the sections 7, 9 of the intake channel 2 and opens the channel 27 leading into the atmosphere or to the activated carbon trap 26, so that the gas space 14 of the float chamber via the channels 24 and the chamber 22 formed by the free rotation of the slide rod is connected to the channel 27 connected to the atmosphere and by this to the activated carbon trap 26.
  • the activated carbon trap 26 has further connections for the regeneration of the activated carbon, which are not described, however, since there is no direct connection with the invention.
  • the membrane 13 is to be replaced by an electromagnet excited during motor operation.

Landscapes

  • 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)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP86103114A 1985-06-26 1986-03-08 Carburateur pour moteur à combustion interne Expired EP0205759B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3522812 1985-06-26
DE3522812A DE3522812C1 (de) 1985-06-26 1985-06-26 Vergaser fuer Brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0205759A2 true EP0205759A2 (fr) 1986-12-30
EP0205759A3 EP0205759A3 (en) 1987-03-25
EP0205759B1 EP0205759B1 (fr) 1988-05-04

Family

ID=6274215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103114A Expired EP0205759B1 (fr) 1985-06-26 1986-03-08 Carburateur pour moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0205759B1 (fr)
DE (2) DE3522812C1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR770281A (fr) * 1934-03-17 1934-09-11 Perfectionnements aux carburateurs
JPS60104750A (ja) * 1983-11-14 1985-06-10 Nippon Carbureter Co Ltd 気化器浮子室の掃気方法
JPS60113052A (ja) * 1983-11-25 1985-06-19 Hitachi Ltd 気化器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2534685A1 (de) * 1975-08-02 1977-02-03 Daimler Benz Ag Vorrichtung zur belueftung der schwimmerkammer eines vergasers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR770281A (fr) * 1934-03-17 1934-09-11 Perfectionnements aux carburateurs
JPS60104750A (ja) * 1983-11-14 1985-06-10 Nippon Carbureter Co Ltd 気化器浮子室の掃気方法
JPS60113052A (ja) * 1983-11-25 1985-06-19 Hitachi Ltd 気化器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 9, Nr. 252 (M-420)[1975], 9. Oktober 1985; & JP-A-60 104 750 (NIHON KIKAKI SEISAKUSHO K.K.) 10-06-1985 (Kat. A) *
PATENTS ABSTRACTS OF JAPAN, Band 9, Nr. 268 (M-424)[1991], 25. Oktober 1985; & JP-A-60 113 052 (HITACHI SEISAKUSHO K.K.) 19-06-1985 (Kat. A) *

Also Published As

Publication number Publication date
EP0205759A3 (en) 1987-03-25
DE3522812C1 (de) 1986-07-10
EP0205759B1 (fr) 1988-05-04
DE3660175D1 (en) 1988-06-09

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