DE241452C - - Google Patents
Info
- Publication number
- DE241452C DE241452C DENDAT241452D DE241452DA DE241452C DE 241452 C DE241452 C DE 241452C DE NDAT241452 D DENDAT241452 D DE NDAT241452D DE 241452D A DE241452D A DE 241452DA DE 241452 C DE241452 C DE 241452C
- Authority
- DE
- Germany
- Prior art keywords
- pump
- piston
- pressure
- fuel
- 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.)
- Active
Links
- 239000000446 fuel Substances 0.000 claims description 6
- 241000490025 Schefflera digitata Species 0.000 claims 1
- 235000015250 liver sausages Nutrition 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
- F02M63/008—Hollow valve members, e.g. members internally guided
-
- 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
- F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
- F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
- F02M2700/1317—Fuel pumpo for internal combustion engines
- F02M2700/1364—Fuel pump controlled by means of a fuel return valve
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
■- M 241452 KLASSE 46c. GRUPPE■ - M 241452 CLASS 46c. GROUP
E. C. KARCH-BESTA in CÖLN a. Rh.E. C. KARCH-BESTA in CÖLN a. Rh.
Patentiert im Deutschen Reiche vom 6.JuIi 1910 ab.Patented in the German Empire on June 6, 1910.
Gegenstand der vorliegenden Erfindung ist eine Brennstoffpumpe für Verbrennungskraftmaschinen,
die sich durch große Gedrungenheit und Einfachheit auszeichnet.
Die Pumpe arbeitet ohne Saugventil, der Brennstoffzufluß wird vielmehr durch den
•Pumpenkolben gesteuert. Diese Eigentümlichkeit ist zwar an. sich bekannt und bei
Pumpen für die verschiedenartigsten Zwecke ίο anzutreffen. Neu ist jedoch die eigenartige
Ausbildung und Anordnung des Druckventils. The present invention relates to a fuel pump for internal combustion engines which is characterized by its compactness and simplicity.
The pump works without a suction valve, the fuel flow is rather controlled by the • pump piston. This peculiarity is on. known and to be found in pumps for a wide variety of purposes ίο. What is new, however, is the peculiar design and arrangement of the pressure valve.
Letzteres hat nämlich die Gestalt eines Hohlzylinders, ist in dem Pumpenkörper geführt und umschließt den Pumpenkolben.The latter has the shape of a hollow cylinder and is guided in the pump body and encloses the pump piston.
Es sind nun zwar auch Pumpen bekannt, bei denen ein Rohrschieber den Kolben umgibt und die Zylinderlauffläche bildet.Pumps are also known in which a tubular slide surrounds the piston and forms the cylinder running surface.
Es handelt sich hierbei aber um einen Steuerschieber und kein eigentliches Ventil, und ferner ist der Steuerschieber als Schleppschieber ausgebildet, wird also durch den Pumpenkolben unter Vermittlung der Kolbenreibung oder mechanischer Anschläge hin und her bewegt, während im vorliegenden Falle das Druckventil durch den Flüssigkeitsdruck im Pumpeninnern entgegen der Bewegungsrichtung des Kolbens geöffnet wird.However, this is a control slide and not an actual valve, and furthermore, the control slide is designed as a drag slide, that is to say it is through the Pump piston by means of piston friction or mechanical stops back and forth moved forward, while in the present case the pressure valve by the liquid pressure is opened inside the pump against the direction of movement of the piston.
Die Figur zeigt ein Ausführungsbeispiel des Erfindungsgegenstandes.The figure shows an embodiment of the subject matter of the invention.
Der Pumpenkolben K erhält in beliebiger Weise seine hin und her gehende Bewegung.The pump piston K receives its back and forth movement in any way.
Es wird weiterhin vorausgesetzt, daß der Brennstoff der Pumpe unter natürlichem Gefälle bei A zufließt. Dann gelangt derselbe durch, einige Löcher der in den Pumpenkolben K eingedrehten Nut N (begrenzt durch die Kanten 1 und 2) und die achsiale Bohrung η in den eigentlichen Pumpenraum.It is also assumed that the fuel flows into the pump under a natural gradient at A. It then passes through a few holes in the groove N screwed into the pump piston K (delimited by the edges 1 and 2) and the axial bore η into the actual pump chamber.
Das Druckventil B gestattet eine geringe Längsbewegung; seine Verschiebung ist nach oben und unten begrenzt. In der gezeichneten Stellung setzt es sich unten auf einen konischen Sitz, der mit der Verschlußschraube 5 ein Stück bildet und verschließt in seiner Ruhestellung die beiden Öffnungen G und E, die in die Umlaufleitung u, u und in die Druckleitung C münden. Durch die Feder F wird es beständig nach unten gedrückt. Nur während des, Druckhubes beim Abwärtsgange des Kolbens hebt es sich unter dem Einflüsse,' den die Flüssigkeitspressung auf seine untere Kreisringfläche ausübt, und stößt oben an einen Vorsprung 0 an, wobei gleichzeitig die Öffnungen E und G freigelegt werden. Das Anheben des Ventils beginnt, sobald die obere Kante 1 der Nute N beim Abwärtsgange des Pumpenkolbens mit der oberen Kante 3 des Druckventils B zur Deckung gekommen' ist. Von da ab ist die Verbindung zwischen Zulauf A und Pumpenraum unterbrochen.The pressure valve B allows a slight longitudinal movement; its displacement is limited upwards and downwards. In the position shown, it sits down on a conical seat which forms one piece with the screw plug 5 and, in its rest position, closes the two openings G and E, which open into the circulation line u, u and the pressure line C. It is constantly pushed down by the spring F. Only during the 'pressure stroke during the downward movement of the piston does it rise under the influence of the liquid pressure exerted on its lower circular ring surface and abut a projection 0 at the top, whereby openings E and G are exposed at the same time. The lifting of the valve begins as soon as the upper edge 1 of the groove N has come to coincide with the upper edge 3 of the pressure valve B during the downward movement of the pump piston. From then on, the connection between inlet A and pump room is interrupted.
Bei Beginn des Saughubes verschließt das Druckventil die Öffnungen E und G; es wirdAt the beginning of the suction stroke, the pressure valve closes the openings E and G; it will
durch die Feder F nach abwärts gedrückt, weil jetzt der Federdruck die im Pumpenraum bestehende geringe Pressung überwindet. pressed downwards by the spring F because the spring pressure now overcomes the low pressure in the pump chamber.
Zwecks Veränderung der Brennstoffmenge ist zwischen Pumpenraum und Saugleitung in bekannter Weise eine Umlaufleitung u-u angeordnet. The purpose of changing the amount of fuel, a recirculation line is disposed between the pump chamber and suction uu in a known manner.
In diese ist bei R ein Absperrorgan (Drosselhahn o. dgl.) eingeschaltet, das dem Einflusse eines Geschwindigkeitsreglers unterstellt ist.In this a shut-off device (throttle valve or the like) is switched on at R, which is subject to the influence of a speed controller.
Die Umlaiifleitung besteht aus einer Reihe von Bohrungen, die im Pumpenkörper M sitzen und nach außen durch kleine Schrauben s verschlossen sind.The bypass line consists of a series of bores that are located in the pump body M and are closed to the outside by small screws s.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE241452C true DE241452C (en) |
Family
ID=500747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT241452D Active DE241452C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE241452C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2304793A1 (en) * | 1975-03-20 | 1976-10-15 | Graco Inc | DIAPHRAGM PUMP |
-
0
- DE DENDAT241452D patent/DE241452C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2304793A1 (en) * | 1975-03-20 | 1976-10-15 | Graco Inc | DIAPHRAGM PUMP |
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