DE1806336U - SECURING THE DRIVE VALVE FOR THE PISTON OF A FUEL INJECTION PUMP AGAINST TURNING. - Google Patents
SECURING THE DRIVE VALVE FOR THE PISTON OF A FUEL INJECTION PUMP AGAINST TURNING.Info
- Publication number
- DE1806336U DE1806336U DEB34080U DEB0034080U DE1806336U DE 1806336 U DE1806336 U DE 1806336U DE B34080 U DEB34080 U DE B34080U DE B0034080 U DEB0034080 U DE B0034080U DE 1806336 U DE1806336 U DE 1806336U
- Authority
- DE
- Germany
- Prior art keywords
- tappet
- pin
- piston
- fuel injection
- securing
- 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
- 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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0439—Supporting or guiding means for the pistons
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8015—Provisions for assembly of fuel injection apparatus in a certain orientation, e.g. markings, notches or specially shaped sleeves other than a clip
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Sicherung des Antriebstößels, insbesondere Rollenstößels, für den Kolben einer Kraftstoffeinspritzpumpe gegen Verdrehen im Pumpengehäuse durch einen in eine Längsnut im Stößelmantel eingreifenden, im Pumpengehäuse steckenden Stift.The invention relates to securing the drive tappet, in particular roller tappet, for the piston of a fuel injection pump against rotation in the pump housing by means of a pin which engages in a longitudinal groove in the tappet casing and is inserted in the pump housing.
Der Erfindung liegt die Aufgabe zugrunde, eine Stößelverdrehsicherung zu schaffen, die gegenüber den bekannten Sicherungen der oben beschriebenen Art den Vorteil hat, dass als Berührungsstellen zwischen dem Sicherungsstift und dem Stößel Flächen dienen und dass zwischen dem in die Längsnut ragenden Abschnitt des Sicherungsstiftes und der Nut ein sehr kleines Spiel vorgesehen werden kann.The invention is based on the object of creating a plunger anti-rotation device which has the advantage over the known fuses of the type described above that surfaces serve as contact points between the locking pin and the plunger and that between the section of the locking pin protruding into the longitudinal groove and the groove a very small game can be provided.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, dass der Sicherungsstift in einer radial gegen den Stößel gerichteten Bohrung des Pumpengehäuses verdrehbar eingesetzt sowie gegen Verschieben nach außen gesichert ist und mit einem Ansatz, der durch zwei parallel und diametral einander gegenüberliegende Ab- flachungen des Stiftes gebildet ist, in die Längsnut eingreift.This object is achieved according to the invention in that the locking pin is inserted rotatably in a bore of the pump housing directed radially against the plunger and is secured against displacement to the outside and with an attachment that is formed by two parallel and diametrically opposed abutments. is formed flats of the pin, engages in the longitudinal groove.
Auf der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung im Längsschnitt dargestellt.In the drawing, an embodiment of the subject matter of the invention is shown in longitudinal section.
In dem Gehäuse 1 einer nur teilweise dargestellten Kraftstoffeinspritzpumpe ist eine Nockenwelle 2 gelagert, deren Nocken 3 an der Rolle 4 eines Stößels angreift, dessen Körper 5 im Pumpengehäuse 1 verschiebbar geführt ist. Eine Feder 6, die sich in nicht dargestellter Weise am Pumpengehäuse 1 abstützt, drückt über einen Federteller 7 einen Mitnehmer 8 gegen den Stößelkörper 5. In den Mitnehmer 8 ist das Ende eines nur teilweise dargestellten Pumpenkolbens 10 eingehängt. Zu diesem Zweck hat der Mitnehmer eine seitliche Öffnung 11. Die Feder 6 ist bestrebt, die Rolle 4 des Stößels in ständiger Berührung mit dem Nocken 3 zu halten.In the housing 1 of a fuel injection pump only partially shown, a camshaft 2 is mounted, the cam 3 of which engages the roller 4 of a tappet, the body 5 of which is displaceably guided in the pump housing 1. A spring 6, which is supported on the pump housing 1 in a manner not shown, presses a driver 8 against the tappet body 5 via a spring plate 7. The end of a pump piston 10, which is only partially shown, is suspended in the driver 8. For this purpose, the driver has a lateral opening 11. The spring 6 tries to keep the roller 4 of the plunger in constant contact with the cam 3.
In den Mantel des Stößelkörpers 5 ist eine Längsnut 12 eingearbeitet, in die mit möglichst geringem Spiel ein Ansatz 14 eines Sicherungsstiftes 16 eingreift. Dieser Ansatz ist durch zwei parallele, diametral einander gegenüberliegende Abflachungen des sonst zylindrischen Sicherungsstiftes 16 gebildet. Der Sicherungsstift ist in eine radial gegen den Stößel gerichtete Bohrung des Pumpengehäuses 1 verdrehbar eingesetzt. Die Radialbohrung ist außen durch eine Schraube 17 verschlossen, die den Stift gegen Verschieben nach außen sichert.A longitudinal groove 12 is worked into the jacket of the tappet body 5, into which a projection 14 of a locking pin 16 engages with as little play as possible. This approach is formed by two parallel, diametrically opposite flattened areas of the otherwise cylindrical locking pin 16. The locking pin is inserted rotatably into a bore in the pump housing 1 that is directed radially against the tappet. The radial bore is closed on the outside by a screw 17, which secures the pin against shifting outwards.
Bei den Bewegungen des Stößels, welcher dieser nach Maßgabe des Nockens 3 ausführt, gleitet der Stößelkörper 5 mit seiner Längsnut 12 an dem Ansatz 14 des Sicherungsstiftes 16 entlang. Als Berührungsstellen zwischen dem Stößel und dem Sicherungsstift dienen also Flächen. Da der Stift drehbar gelagert ist, kann sein Ansatz 14 sich selbst in die zur Längsnut 12 richtige Lage einstellen. Deshalb kann das Spiel zwischen dem Ansatz 14 und der Nut 12 sehr klein gewählt werden.During the movements of the tappet, which it executes in accordance with the cam 3, the tappet body 5 slides with its longitudinal groove 12 on the shoulder 14 of the locking pin 16. So surfaces serve as points of contact between the plunger and the locking pin. Since the pin is rotatably mounted, its extension 14 can adjust itself to the correct position relative to the longitudinal groove 12. Therefore, the game between the shoulder 14 and the groove 12 can be selected to be very small.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB34080U DE1806336U (en) | 1958-07-08 | 1958-07-08 | SECURING THE DRIVE VALVE FOR THE PISTON OF A FUEL INJECTION PUMP AGAINST TURNING. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB34080U DE1806336U (en) | 1958-07-08 | 1958-07-08 | SECURING THE DRIVE VALVE FOR THE PISTON OF A FUEL INJECTION PUMP AGAINST TURNING. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1806336U true DE1806336U (en) | 1960-02-18 |
Family
ID=32914221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB34080U Expired DE1806336U (en) | 1958-07-08 | 1958-07-08 | SECURING THE DRIVE VALVE FOR THE PISTON OF A FUEL INJECTION PUMP AGAINST TURNING. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1806336U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007006320A1 (en) * | 2007-02-08 | 2008-08-14 | Schaeffler Kg | Mechanical roller tappet for an internal combustion engine |
US20130202466A1 (en) * | 2012-02-03 | 2013-08-08 | Denso Corporation | Supply pump |
WO2018108350A1 (en) * | 2016-12-13 | 2018-06-21 | Robert Bosch Gmbh | Pump, in particular a high-pressure pump of a fuel injection system |
-
1958
- 1958-07-08 DE DEB34080U patent/DE1806336U/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007006320A1 (en) * | 2007-02-08 | 2008-08-14 | Schaeffler Kg | Mechanical roller tappet for an internal combustion engine |
US8104442B2 (en) | 2007-02-08 | 2012-01-31 | Schaeffler Kg | Mechanical roller tappet for an internal combustion engine |
US20130202466A1 (en) * | 2012-02-03 | 2013-08-08 | Denso Corporation | Supply pump |
US9476420B2 (en) | 2012-02-03 | 2016-10-25 | Denso Corporation | Supply pump |
DE102013100848B4 (en) | 2012-02-03 | 2018-05-09 | Denso Corporation | Feed pump, in particular radial piston pump, with rotation lock for the roller tappet |
WO2018108350A1 (en) * | 2016-12-13 | 2018-06-21 | Robert Bosch Gmbh | Pump, in particular a high-pressure pump of a fuel injection system |
CN110062845A (en) * | 2016-12-13 | 2019-07-26 | 罗伯特·博世有限公司 | The high-pressure pump of pump, especially fuel injection system |
CN110062845B (en) * | 2016-12-13 | 2021-08-31 | 罗伯特·博世有限公司 | Pump, in particular high-pressure pump of a fuel injection system |
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