DE389719C - Fresh air valve for carburettors of internal combustion engines - Google Patents

Fresh air valve for carburettors of internal combustion engines

Info

Publication number
DE389719C
DE389719C DEM80450D DEM0080450D DE389719C DE 389719 C DE389719 C DE 389719C DE M80450 D DEM80450 D DE M80450D DE M0080450 D DEM0080450 D DE M0080450D DE 389719 C DE389719 C DE 389719C
Authority
DE
Germany
Prior art keywords
internal combustion
combustion engines
carburettors
fresh air
air valve
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
DEM80450D
Other languages
German (de)
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.)
Rolls Royce Solutions GmbH
Original Assignee
Maybach Motorenbau 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 Maybach Motorenbau GmbH filed Critical Maybach Motorenbau GmbH
Priority to DEM80450D priority Critical patent/DE389719C/en
Application granted granted Critical
Publication of DE389719C publication Critical patent/DE389719C/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
    • F02M3/00—Idling devices for carburettors
    • F02M3/02—Preventing flow of idling fuel
    • F02M3/04—Preventing flow of idling fuel under conditions where engine is driven instead of driving, e.g. driven by vehicle running down hill
    • F02M3/043—Devices as described in F02M3/005, F02M3/041, F02M3/042, F02M3/045, F02M3/05 and F02M3/055 and also equipped with additional air
    • 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
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
    • F02M23/08—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus
    • F02M23/09—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus using valves directly opened by low pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Description

Frischluftventil für Vergaser von Verbrennungskraftmaschinen. Bei Vergasern der Verbrennungskraftmaschinen von Kraftfahrzeugen entsteht bekanntlich beim plötzlichen Abstellen des Vergasers, während der durch den Wagen mitgenommene Motor mit nahezu unverminderter Drehzahl weiterläuft, ein übermäßig großer Unterdruck im Vergaser, der mancherlei Nachteile im Gefolge hat, wie Neigung zum Verschmieren der Zylinderräume infolge von Einsaugen von ö1 durch die Kolbenundichtheiten in den Verbrennungsraum, übermäßigen Verbrauch während dieser Zeit USW. Fresh air valve for carburetors of internal combustion engines. In carburetors of internal combustion engines of motor vehicles, it is well known that if the carburetor is suddenly switched off while the engine carried along by the car continues to run at almost the same speed, an excessively large negative pressure in the carburettor, which has various disadvantages as a result, such as a tendency to smear the cylinder chambers as a result of suction of ö1 through the piston leaks into the combustion chamber, excessive consumption during this time, etc.

Die Erfindung bezweckt nun, diesen schädlichen Unterdruck auf ein Mindestmaß zu beschränken und dadurch die erwähnten Übelstände zu beseitigen. Sie erreicht dies durch den Einbau eines die Vergaserleitung mit der Außenluft verbindenden Ventils zwischen der Drosselklappe und dem Verbrennungsraum, das sich erst bei einem bestimmten Unterdruck öffnet. Es ist an sich bekannt, derartige Ventile hinter dem Vergaser anzuordnen. Die Wirkungsweise der bisherigen Ausführungen ist jedoch derart, daB schon während des normalen Betriebs des Motors durch das Ventil von einem gewissen Unterdruck an dauernd Luft zugeführt wird und die Vergaserquerschnitte entsprechend kleiner gehalten werden müssen.The invention now aims to this harmful negative pressure on a To limit the minimum and thereby eliminate the abuses mentioned. she achieves this by installing a pipe connecting the carburetor with the outside air Valve between the throttle valve and the combustion chamber, which is only opened when a certain negative pressure opens. It is known per se such To arrange valves behind the carburetor. How the previous statements work is such that even during normal engine operation, the Valve is constantly supplied with air from a certain negative pressure and the carburetor cross-sections must be kept correspondingly smaller.

Bei der vorliegenden Erfindung wird die Ventilbelastung so bemessen, daß das Ventil sich nicht öffnet, wenn der Motor Arbeit leistet und den Wagen treibt, sondern- erst dann geöffnet wird, wenn der Motor vom Wagen angetrieben wird und der Vergaser geschlossen ist, so daß der beim normalen Betrieb auftretende größte Unterdruck in der Vergaserleitung überschritten wird.In the present invention, the valve load is dimensioned so that that the valve does not open when the engine is working and driving the car, but- is only opened when the motor is driven by the car and the carburetor is closed, so that the largest occurring during normal operation Negative pressure in the carburetor line is exceeded.

Auf der Zeichnung ist eine beispielsweise Äusführungsform der Einrichtung schematisch dargestellt.The drawing shows an exemplary embodiment of the device shown schematically.

a ist der Vergaser, der bei b mit der Brennstoffzuleitung verbunden ist. c ist die Vergaserdüse, d die zum Motor führende Leitung mit der eingebauten Drosselklappe e. f ist die das Brennstoffgemisch an die Zylinder g des Motors abgebende Verteilerleitung. Zwischen dem Motor und der Drosselklappe ist in der Leitung d ein mit der Außenluft in Verbindung stehendes Ventil h angeordnet, dessen Abschlußorgan i bei dem dargestellten Beispiel unter der Einwirkung einer Kegelfeder k steht,- die sich einerseits gegen das Ventilgehäuse und anderseits gegen ein Widerlager l stützt, das auf der in Lagern n2 und in' geführten Ventilspindel n angeordnet ist. Die Spannung dieser Kegelfeder k ist so bemessen, daß sie dem beim normalen Betrieb des Motors mit Kraftleistung entstehenden größten Unterdruck in der Leitung d zu widerstehen vermag und das Abschlußorgan i in der Schlußstellung hält und erst ein Öffnen des Ventils gestattet, wenn der Unterdruck noch über diesen größten Wert steigt in dem Fall, wenn der Vergaser geschlossen und der Motor vom Wagen weitergetrieben wird.a is the carburetor, which is connected to the fuel supply line at b. c is the carburetor nozzle, d the line leading to the engine with the built-in throttle valve e. f is the distribution line delivering the fuel mixture to cylinders g of the engine. Between the motor and the throttle valve, a valve h connected to the outside air is arranged in the line d, the closing element i of which is under the action of a conical spring k in the example shown, which is on the one hand against the valve housing and on the other hand against an abutment l based, which is arranged on the in bearings n2 and in 'guided valve spindle n. The tension of this conical spring k is dimensioned so that it is able to withstand the greatest negative pressure in the line d which occurs during normal operation of the engine with power output and keeps the closing element i in the final position and only allows the valve to open when the negative pressure is still above this maximum value increases in the case when the carburetor is closed and the engine is driven further from the car.

Claims (1)

PATENT-ANsPRUcH: Frischluftventil für Vergaser von Verbrennungskraftmaschinen, insbesondere von Kraftfahrzeugen, dadurch gekennzeichnet, daß das zwischen Gemischdrossel und Maschine eingebaute Ventil derart belastet ist, daß es erst dann Luft in die Saugleitung eintreten läßt, wenn der Motor bei geschlossener Drossel von außen her angetrieben wird. PATENT CLAIM: Fresh air valve for carburettors of internal combustion engines, especially of motor vehicles, characterized in that the valve installed between the mixture throttle and the machine is so loaded that it only allows air to enter the suction line when the engine is driven from the outside with the throttle closed will.
DEM80450D 1923-02-06 1923-02-06 Fresh air valve for carburettors of internal combustion engines Expired DE389719C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM80450D DE389719C (en) 1923-02-06 1923-02-06 Fresh air valve for carburettors of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM80450D DE389719C (en) 1923-02-06 1923-02-06 Fresh air valve for carburettors of internal combustion engines

Publications (1)

Publication Number Publication Date
DE389719C true DE389719C (en) 1924-02-11

Family

ID=7318739

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM80450D Expired DE389719C (en) 1923-02-06 1923-02-06 Fresh air valve for carburettors of internal combustion engines

Country Status (1)

Country Link
DE (1) DE389719C (en)

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