DE563917C - Fuel injection pump - Google Patents
Fuel injection pumpInfo
- Publication number
- DE563917C DE563917C DEL79022D DEL0079022D DE563917C DE 563917 C DE563917 C DE 563917C DE L79022 D DEL79022 D DE L79022D DE L0079022 D DEL0079022 D DE L0079022D DE 563917 C DE563917 C DE 563917C
- Authority
- DE
- Germany
- Prior art keywords
- pump
- piston
- fuel
- fuel injection
- injection pump
- 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
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/007—Venting means
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- 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
-
- 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
Description
Brennstoff einspYitzpumpe Die Erfindung betrifft eine Brennstoffeinspritzpumpe mit einem zur Steuerung der Saug- und Rückströmöffnung mit einer schrägen Steuerkante versehenen drehbaren Kolben.Fuel injection pump The invention relates to a fuel injection pump with one to control the suction and backflow opening with an inclined control edge provided rotatable piston.
Die Erfindung besteht darin, daß der Pumpenkolben an dem die schräge Steuerkante tragenden Ende zwei mit dem Pumpendruckraum in dauernder Verbindung stehende Längsnuten aufweist, von denen bei Verdrehung des Pümpenkolbens in die der Nullförderung entsprechende Lage die eine mit der Brennstoffzufuhr-, die andere mit der Brennstoffrückströmöffnung zur Deckung gelangt, so daß, gleichgültig in welcher Hublage sich. der Kolben befindet, die Brennstoffzufuhr über den Pumpendruckraum mit der BrennstoffrückströmIeitung verbunden wird und so die Entlüftung der Pumpe vor der Inbetriebsetzung durch einfaches Verdrehen des Pumpenkolbens in diese Stellung unabhängig von der Kolbenhublage erfolgen kann.The invention consists in that the pump piston on which the inclined Control edge bearing end two with the pump pressure chamber in permanent connection has standing longitudinal grooves, of which when the pump piston is rotated into the The one with the fuel supply, the other position corresponding to the zero supply with the fuel return opening to coincide, so that, indifferent in which stroke position. the piston is located, the fuel supply via the pump pressure chamber is connected to the fuel return line and so the venting of the pump before commissioning by simply turning the pump piston into this position can take place independently of the piston stroke position.
Auf der Zeichnung ist in Abb. i und a der hier in Betracht kommende Teil einer Brennstoffeinspritzpumpe in zwei verschiedenen Hublagen des Pumpenkolbens in der Nullstellung der Pumpe im senkrechten Schnitt veranschaulicht. Abb.3 zeigt einen waagrechten Schnitt nach der Linie A-B von Abb. a.On the drawing in Fig. I and a is the one that comes into consideration here Part of a fuel injection pump in two different stroke positions of the pump piston illustrated in the zero position of the pump in vertical section. Fig.3 shows a horizontal section along the line A-B in Fig. a.
Hierbei ist der Pumpenkolben mit a, der Brennstoffsaugraum mit b und der Brennstoffrückströmraum mit c bezeichnet.The pump piston is marked with a, the fuel suction chamber with b and the fuel return flow space is denoted by c.
In der Pumpenführung d sind Bohrungen e und f vorgesehen, von denen die erstere mit dem Saugraum b, die letztere mit dem Rückströmraum c in Verbindung steht.In the pump guide d bores e and f are provided, of which the former with the suction chamber b, the latter with the return flow chamber c in connection stands.
Der Pumpenkolben d ist mit zwei einander gegenüberliegenden senkrechten Nuten dl und a2 versehen, durch welche der Saugraum b mit dem Rückströmraum c ausschließlich in der Nullstellung der Pumpe in Verbindung steht. Bei dieser Stellung wird die Pumpe entlüftet, indem die Luft aus dem Saugraum über die Bohrungen d und a2 in den Rückströmraum bzw. in dessen Windkessel abziehen kann.The pump piston d is with two mutually opposite perpendicular Grooves dl and a2 are provided through which the suction chamber b and the return flow chamber c exclusively is in communication in the zero position of the pump. In this position the The pump is vented by drawing the air from the suction chamber through holes d and a2 in can withdraw the return flow space or its air chamber.
Diese Stellung wird also jeweils vor Inbetriebsetzung der Pumpe durch einfaches Verdrehen des Pumpenkolbens herbeigeführt.This position is therefore carried out before the pump is started up caused by simply turning the pump piston.
In jeder anderen Stellung des Pumpenkolbens ist die Verbindung der Nuten a1 und a2 mit den Bohrungen e und f aufgehoben, so daß die Brennstofförderung durch diese Nuten in keiner Weise beeinflußt wird.In any other position of the pump piston, the connection of the grooves a1 and a2 with the bores e and f is canceled, so that the fuel delivery is in no way affected by these grooves.
Die Brennstoffbemessung in der Betriebsstellung erfolgt, wie bekannt, durch die erwähnte, auf der Zeichnung ebenfalls ersichtliche Schrägsteuerkante des Pumpenkolbens a.The fuel dimensioning in the operating position takes place, as is known, by the mentioned, on the drawing also visible trailing edge of the Pump piston a.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL79022D DE563917C (en) | Fuel injection pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL79022D DE563917C (en) | Fuel injection pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE563917C true DE563917C (en) | 1932-11-11 |
Family
ID=7284534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL79022D Expired DE563917C (en) | Fuel injection pump |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE563917C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE768143C (en) * | 1938-05-06 | 1957-09-12 | Daimler Benz Ag | Injection pump, especially for internal combustion engines |
CN110832185A (en) * | 2017-07-05 | 2020-02-21 | 罗伯特·博世有限公司 | Attachment stub for a high-pressure fuel pump and high-pressure fuel pump |
-
0
- DE DEL79022D patent/DE563917C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE768143C (en) * | 1938-05-06 | 1957-09-12 | Daimler Benz Ag | Injection pump, especially for internal combustion engines |
CN110832185A (en) * | 2017-07-05 | 2020-02-21 | 罗伯特·博世有限公司 | Attachment stub for a high-pressure fuel pump and high-pressure fuel pump |
US11434859B2 (en) | 2017-07-05 | 2022-09-06 | Robert Bosch Gmbh | Connection piece for a high-pressure fuel pump, and high-pressure fuel pump |
EP3649338B1 (en) * | 2017-07-05 | 2023-09-06 | Robert Bosch GmbH | Connection piece for a high-pressure fuel pump, and high-pressure fuel pump |
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