DE843761C - Carburetor for internal combustion engines with a cylindrical nozzle needle that is guided to fit in the nozzle bore - Google Patents

Carburetor for internal combustion engines with a cylindrical nozzle needle that is guided to fit in the nozzle bore

Info

Publication number
DE843761C
DE843761C DEF2569A DEF0002569A DE843761C DE 843761 C DE843761 C DE 843761C DE F2569 A DEF2569 A DE F2569A DE F0002569 A DEF0002569 A DE F0002569A DE 843761 C DE843761 C DE 843761C
Authority
DE
Germany
Prior art keywords
needle
carburetor
internal combustion
combustion engines
guided
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
DEF2569A
Other languages
German (de)
Inventor
Rudolf Eichler
Willi Eichler
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.)
FISCHER A G fur APPBAU
Original Assignee
FISCHER A G fur APPBAU
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 FISCHER A G fur APPBAU filed Critical FISCHER A G fur APPBAU
Priority to DEF2569A priority Critical patent/DE843761C/en
Application granted granted Critical
Publication of DE843761C publication Critical patent/DE843761C/en
Expired legal-status Critical Current

Links

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
    • F02M19/04—Fuel-metering pins or needles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Zur besseren Führung der Düsennadel in der Düsenbohrung von Vergasern für Brennkraftmaschinen ist es bekannt, die Nadel zylindrisch oder sonst prismatisch auszubilden und passend in der einen gleichen Durchgangsquerschnitt aufweisenden Düse zu führen. Die Nadel enthält dabei eine nach dem Ende hin in der Tiefe zunehmende Nut oder Abflachung, die jedoch bei den bekannten Ausführungen stetig verläuft, so daß die Öffnung der Bohrung über den Verstellweg der Nadel gleichmäßig erfolgt.For better guidance of the nozzle needle in the nozzle bore of carburetors for internal combustion engines it is known that the needle is cylindrical or otherwise prismatic train and fit in the same passage cross-section Guide nozzle. The needle contains one that increases in depth towards the end Groove or flattening, which, however, runs steadily in the known designs, so that the opening of the hole takes place uniformly over the adjustment path of the needle.

Für manche Betriebsverhältnisse dieser Vergaser ist es jedoch erwünscht, die Brennstoffzufuhr am Anfang des Öffnungsweges nach einem anderen Verhältnis des Öffnungsspaltes zu dem Verstellweg zu regeln als zum Ende des Öffnungsweges. Diesem Erfordernis wird nach der Erfindung dadurch nachgekommen, daß bei Vergasern der vorgenannten Art die Winkelstellung einzelner oder aller Abflachungen der Düsennadel zu der Nadelachse in einzelnen Abschnitten verschieden gehalten ist, wie auch bei Anordnung mehrerer Abflachungen oder Nuten diese Flächen unter verschiedenen Winkeln zu der Nadelachse und zum Teil auch parallel hierzu verlaufen können. Durch diese Ausführung ist die Möglichkeit gegeben, die Menge des durchfließenden Brennstoffes nach einer beliebigen Kurve über dem Öffnungsweg zu bemessen und dem Vergaser eine bestimmte Charakteristik zu geben.For some operating conditions of these carburettors, however, it is desirable the fuel supply at the beginning of the opening path according to a different ratio of To regulate the opening gap to the adjustment path than to the end of the opening path. This one Requirement is met according to the invention in that the carburetors aforementioned type the angular position of individual or all flattened areas of the nozzle needle is kept different to the needle axis in individual sections, as well as in Arrange several flats or grooves these surfaces at different angles can run parallel to the needle axis and in part. Through this Execution is given the opportunity to determine the amount of fuel flowing through to be measured according to any curve over the opening path and the carburetor a to give certain characteristics.

Die neue Ausführung ist nachstehend an Hand des in der Zeichnung dargestellten Beispiels näher erläutert. In der zylindrischen Bohrung i der Düse 2 ist die ebenfalls in der Grundform zylindrische Nadel 3 passend geführt. Die Nadel 3 ist mit einer Abflachung 4 versehen, deren Neigung zu der Nadelachse jedoch nicht gleichmäßig verläuft.The new version is shown below with reference to the one shown in the drawing Example explained in more detail. This is also in the cylindrical bore i of the nozzle 2 In the basic shape of a cylindrical needle 3 guided appropriately. The needle 3 is with a Flattened area 4 is provided, but its inclination to the needle axis is not uniform runs.

In diesem Teil der Nadel 3, der den Öffnungsquerschnitt für den Beginn des Öffnungsweges bestimmt, verläuft die Abflachung in einem größeren Neigungswinkel zu der Nadelachse als in dem sich nach dem Ende der Nadel hin anschließenden Teil.In this part of the needle 3, which is the opening cross-section for the beginning of the opening path determined, the flattening runs at a greater angle of inclination towards the needle axis than in the part following the end of the needle.

Claims (2)

PATENTANSPRÜCHE: i. Vergaser für Brennkraftmaschinen mit einer im Winkel zur Nadelachse verlaufende Abflachungen, Nuten od. dgl. aufweisenden zylindrischen Düsennadel, die passend in der Düsenbohrung geführt ist, dadurch gekennzeichnet, daß die Winkelstellung einzelner oder aller Abflachungen zu der Nadelachse in einzelnen Abschnitten verschieden gehalten ist. PATENT CLAIMS: i. Carburetor for internal combustion engines with a cylindrical nozzle needle running at an angle to the needle axis, grooves or the like, which is guided appropriately in the nozzle bore, characterized in that the angular position of individual or all of the flats to the needle axis is kept different in individual sections. 2. Vergaser nach Anspruch i, dadurch gekennzeichnet, daß bei Anordnung mehrerer Abflachungen diese Flächen unter verschiedenen Winkeln zur Nadelachse und auch parallel hierzu verlaufen. Angezogene Druckschriften: Deutsche Patentschriften Nr. 317 764, 376 225, 445629.2. Carburetor according to claim i, characterized in that that when several flats are arranged, these surfaces are at different angles to the needle axis and also run parallel to it. Printed publications: German Patent Nos. 317 764, 376 225, 445629.
DEF2569A 1950-09-01 1950-09-01 Carburetor for internal combustion engines with a cylindrical nozzle needle that is guided to fit in the nozzle bore Expired DE843761C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF2569A DE843761C (en) 1950-09-01 1950-09-01 Carburetor for internal combustion engines with a cylindrical nozzle needle that is guided to fit in the nozzle bore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF2569A DE843761C (en) 1950-09-01 1950-09-01 Carburetor for internal combustion engines with a cylindrical nozzle needle that is guided to fit in the nozzle bore

Publications (1)

Publication Number Publication Date
DE843761C true DE843761C (en) 1952-07-14

Family

ID=7083327

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF2569A Expired DE843761C (en) 1950-09-01 1950-09-01 Carburetor for internal combustion engines with a cylindrical nozzle needle that is guided to fit in the nozzle bore

Country Status (1)

Country Link
DE (1) DE843761C (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE317764C (en) *
DE376225C (en) * 1920-08-20 1923-05-25 Economy Carburetor Foreign Rig Injection carburetors for internal combustion engines
DE445629C (en) * 1927-06-16 Rolls Royce Spray carburettor with automatically adjustable fuel flow cross-section and thus coupled air passage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE317764C (en) *
DE445629C (en) * 1927-06-16 Rolls Royce Spray carburettor with automatically adjustable fuel flow cross-section and thus coupled air passage
DE376225C (en) * 1920-08-20 1923-05-25 Economy Carburetor Foreign Rig Injection carburetors for internal combustion engines

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