DE2021315B2 - CARBURETOR FOR COMBUSTION MACHINES WITH TEMPERATURE DEPENDENT CONTROLLED THROTTLE FLAP AND ACCELERATOR PUMP - Google Patents
CARBURETOR FOR COMBUSTION MACHINES WITH TEMPERATURE DEPENDENT CONTROLLED THROTTLE FLAP AND ACCELERATOR PUMPInfo
- Publication number
- DE2021315B2 DE2021315B2 DE19702021315 DE2021315A DE2021315B2 DE 2021315 B2 DE2021315 B2 DE 2021315B2 DE 19702021315 DE19702021315 DE 19702021315 DE 2021315 A DE2021315 A DE 2021315A DE 2021315 B2 DE2021315 B2 DE 2021315B2
- Authority
- DE
- Germany
- Prior art keywords
- lever
- throttle valve
- pump
- temperature
- accelerator
- 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
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
- F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
- F02M7/06—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system
- F02M7/08—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system using pumps
- F02M7/087—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system using pumps changing output according to temperature in engine
-
- 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
- F02M7/06—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system
- F02M7/08—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system using pumps
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)
- Means For Warming Up And Starting Carburetors (AREA)
Description
eher mit seinem mittleren Abschnitt auf einen weiter unten näher beschriebenen Excenter 20 lose drehbar gelagert ist. Der Hebel 19 wird durch eine Feder 21 betätigt, welche einen durch ein Gelenk 23 mit dem Hebel 14 verbundenen Stab 22 umgibt Der Stab 22 dient zur Betätigung der Pumpe, während der Hebel 14 das Drosselorgan 3 betätigt.rather, with its middle section on a further eccentric 20 described in more detail below is loosely rotatably mounted. The lever 19 is supported by a spring 21 actuated, which surrounds a rod 22 connected to the lever 14 by a joint 23. The rod 22 is used to actuate the pump, while the lever 14 actuates the throttle element 3.
Der Vergaser arbeitet folgendermaßen: Wenn die Brennkraftmaschine ihre Beharrungstemperatur erreicht hat, nehmen die Teile die in F i g. 1 dargestellten Stellungen ein. Die entweder von Hand oder automatisch durch einen mit der Welle 9 verbundenen Hebel 10 betätigte Klappe 8 ist dann offen, und im Leerlauf nimmt die Drosselklappe 3 ihre Stellung kleinster Öffnung ein. Bei einer Beschleunigung wird die Drosselklappe 3 plötzlich geöffnet, wodurch der Hebel 19 auf dem Excenter 20 im Gegenuhrzeigersinn verschwenkt wird. Das Ende 19 a des Hebels 19 verschiebt über den Stößel 18 die Membran 15 in dem Sinn einer Verringerung des Volumens der Kammer 16, was die Einspritzung einer durch den Hub der Membran 15 bestimmten Brennstoffmenge in die Leitung 1 zufolge hat.The carburetor works as follows: When the internal combustion engine has reached its steady-state temperature, the parts take the ones shown in FIG. 1 positions shown. The flap 8, which is operated either manually or automatically by a lever 10 connected to the shaft 9, is then open, and when idling, the throttle valve 3 assumes its smallest opening position. During acceleration, the throttle valve 3 is suddenly opened, as a result of which the lever 19 is pivoted on the eccentric 20 in the counterclockwise direction. The end 19 a of the lever 19 moves the membrane 15 via the plunger 18 in the sense of a reduction in the volume of the chamber 16, which results in the injection of a fuel quantity determined by the stroke of the membrane 15 into the line 1.
Der Excenter 20 des zweiarmigen Hebels 19 ist fest mit einer Achse 24 verbunden, welche exzentrisch zur Mitte des Excenters 20 liegt und in einem festen, z. B. in dem Gehäuse 25 der Pumpe 2 ausgebildeten Lager drehbar gelagert ist.The eccentric 20 of the two-armed lever 19 is firmly connected to an axis 24 which is eccentric is to the center of the eccentric 20 and in a solid, z. B. formed in the housing 25 of the pump 2 Bearing is rotatably mounted.
Diese Achse 24 ist fest mit einem durch einen Stab 2S2c des Excenters 20 begleitet hat, daß sich diesS in der Querrichtung von der Achse desThis axis 24 is firmly accompanied by a rod 2S2c of the eccentric 20 that thisS in the transverse direction from the axis of the
ist die Klappe 8 geschlossen, um so weiter ist das
Zentrum C dPes Excenters 20 in der QuemdiUing von
dem· Stößel 18 entfernt, um so großer ist die Ii
Verschiebung des Endes 19 β des H<If the flap 8 is closed, the further away the center C d P of the eccentric 20 is in the QuemdiUing from the plunger 18, the greater is the Ii
Displacement of the end 19 β of the H <
bestimmte Verdrehung des Hebels; 19,
orößer ist der Hub der Membran 15 ui
?on de Beschleunigungspumpe 2 unter sonst gleiten Umständen eingespritzte Brennstoffvolumen.
In Fiε 1 und 2 ist mit L1 bzw. L2 die Lange descertain twisting of the lever; 19
or greater is the stroke of the membrane 15 ui
Fuel volume injected on the acceleration pump 2 under otherwise sliding circumstances.
In Fiε 1 and 2, with L 1 and L 2, respectively, is the length of the
Hebelains des Hebels 19 zwischen de™.Zentrum c des Excenters 20 und der Angriffslinie des Stoßeis 18 be normalem Betrieb bzw. beim Betneb des kalten Motor bezeichnet. Offenbar ist die Lange L2 großer aTs die Länge L1, so daß der Hub der Membran1imLeverage of the lever 19 between de ™ .Zentrum c of the eccentric 20 and the line of attack of the bumper 18 be normal operation or when Betneb the cold engine. Obviously the length L 2 of large aTs is the length L 1 , so that the stroke of the membrane 1im
dem Fall der Fig.2 größer *^J**}Xj£ Membran bewegt sich stetig mit der Hauptfrosse klappe. Die Brennstoffmenge w.rd von der Beschleun gerpumpe über den ganzen Öffnungsbereich der ^drosselklappe gleichmäßig verteilt eingespritzt.the case of Fig.2 larger * ^ J **} Xj £ membrane moves steadily with the main flap. The amount of fuel is injected by the accelerator pump, evenly distributed over the entire opening area of the throttle valve.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6924812A FR2053855A5 (en) | 1969-07-21 | 1969-07-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2021315A1 DE2021315A1 (en) | 1972-01-27 |
DE2021315B2 true DE2021315B2 (en) | 1973-05-17 |
DE2021315C3 DE2021315C3 (en) | 1973-12-06 |
Family
ID=9037778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2021315A Expired DE2021315C3 (en) | 1969-07-21 | 1970-04-30 | Carburetor for internal combustion engines with temperature-controlled choke valve and accelerator pump |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2021315C3 (en) |
FR (1) | FR2053855A5 (en) |
GB (1) | GB1311712A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4333888A (en) * | 1980-07-31 | 1982-06-08 | Ford Motor Company | Carburetor accelerator pump stroke control |
JPS5898647A (en) * | 1981-12-07 | 1983-06-11 | Suzuki Motor Co Ltd | Acceleration fuel supplying device for carburetor |
FR2523651B1 (en) * | 1982-03-19 | 1986-10-03 | Sibe | RECOVERY PUMP CARBURETOR |
DE3329200C1 (en) * | 1983-08-12 | 1984-08-23 | Pierburg Gmbh & Co Kg, 4040 Neuss | Carburettor for internal combustion engines |
-
1969
- 1969-07-21 FR FR6924812A patent/FR2053855A5/fr not_active Expired
-
1970
- 1970-04-30 DE DE2021315A patent/DE2021315C3/en not_active Expired
- 1970-06-23 GB GB3036770A patent/GB1311712A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2021315C3 (en) | 1973-12-06 |
DE2021315A1 (en) | 1972-01-27 |
FR2053855A5 (en) | 1971-04-16 |
GB1311712A (en) | 1973-03-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) |