DE435181C - Adjustable fuel pump - Google Patents
Adjustable fuel pumpInfo
- Publication number
- DE435181C DE435181C DEK95481D DEK0095481D DE435181C DE 435181 C DE435181 C DE 435181C DE K95481 D DEK95481 D DE K95481D DE K0095481 D DEK0095481 D DE K0095481D DE 435181 C DE435181 C DE 435181C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- fuel
- fuel pump
- pump
- adjustable fuel
- 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
- F02M59/44—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/02—Pumps peculiar thereto
-
- 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)
- Fuel-Injection Apparatus (AREA)
Description
Regelbare Brennstoffpumpe. Bei bekannten regelbaren Brennstoffpumpen, bei denen sich ein im Pumpenkolben sitzendes Ventil durch Anstoß seines Schaftes gegen eineinstellbares Widerlager öffnet, wird dies Ventil durch Federdruck in seiner Verschlußlage gehalten. Die Verschlußteder wird bereits vor Beginn der Ventilöffnung in stark gespanntem Zustande gehalten, weil sie das Ventil gegen den Druck des Brennstoffes ;dicht halten muß. Beginnt aber das öffnen des Ventils, so verliert dieses und damit der Ventilschaft sein Widerlager, und der Schaft wird so stark ,gegen einen vom Regler aus verstellbaren Reglerkeil gedrückt, daß dieser bei Einzylindermotoren nur mittels eines sehr starken Reglers und bei Mehrzylindermotoren gar nicht mehr verstellt werden kann.Adjustable fuel pump. With known controllable fuel pumps, in which a valve seated in the pump piston is opened by pushing its shaft opens against an adjustable abutment, this is spring pressure in its valve Locked position held. The locking spring is already opened before the valve starts to open held in a very tense state because they open the valve against the pressure of the fuel ; must hold tight. But if the valve begins to open, it loses and with it the valve stem is its abutment, and the stem becomes so strong against one of the Regulator from adjustable regulator wedge pressed, that this one with single cylinder engines only by means of a very powerful regulator and no longer at all with multi-cylinder engines can be adjusted.
Durch die Erfindung wird der Übelstand dadurch behoben, daß das Ventil durch den Druck des Brennstoffes in der Verschlußlage gehalten wird, so daß eine die Reglung stö# rende Wirkung des Verschlußmittels ausgeschlossen ist.The invention eliminates the drawback in that the valve is held by the pressure of the fuel in the locking position, so that a the regulation disruptive effect of the closure means is excluded.
In der Zeichnung ist eine Brennstoffpumpe nach der ErfinduAg in einem Längsschnitte dargestellt.In the drawing, a fuel pump according to the invention is in one Longitudinal sections shown.
In dem Gehäuse a wird der Kolben b in bekannter Weise hin und her bewegt, indem beim Druckhube der Nocken c der Scheibe d mittels des Winkelhebels e den Kolben b in die Pumpenkammer f hineindrängt und eine Feder ,g beim Saughube den Kolben b aus der Pumpenkammer f wieder herauszieht. Der Brennstoff wird dabei in bekannter Weisse durch das Ventil k angesaugt und durch das Ventil i nach dem Arbeitszylinder gefördert. Das Regelventil k, welches in der Verlänge# ring L des Kolbens b sitzt, öffnet sich, wenn sein Schaft m gegen den Nocken n der Scheibe o stößt, die mittels des Armes s vom Regler aus so eingestellt wird, daß durch früheren oder späteren Anschlag des Schaftes m gegen den Nocken n mehr oder weniger Brennstoff gefördert wird. Bei Öffnung des Ventils k tritt ein Teil des Brennstoffs aus der Pumpenkannner f durch die Durchlässe p an dem Ventilschaft m vorbei in den Raum hinter der Kolbenverlängerung l und gelangt aus diesem Raum durch den Kanal g in den Saugraum r vor dem Ventil h zurück.In the housing a , the piston b is moved back and forth in a known manner, in that during the pressure stroke the cam c of the disk d pushes the piston b into the pump chamber f by means of the angle lever e and a spring g pushes the piston b out of the pump chamber during the suction stroke f pulls out again. The fuel is sucked in in a known manner through valve k and conveyed through valve i to the working cylinder. The control valve k, which sits in the extension # ring L of the piston b , opens when its shaft m hits the cam n of the disk o, which is set by means of the arm s from the controller so that an earlier or later stop of the shaft m against the cam n more or less fuel is promoted. When the valve k is opened, some of the fuel from the pump can f passes through the passages p past the valve stem m into the space behind the piston extension l and returns from this space through the channel g into the suction space r in front of the valve h .
Nach der Erfindung wird nun bei dieser im wesentlichen bekannten Brennstoffpumpeneinrichtung das Ventil k nicht durch Federdruck, sondern durch den Druck des Brennstoffes in der Verschlußlage gehalten, indem der Raum über dem Ventil mit der Pumpenkammer f durch die Durchlässe p verkehrt. Eine schwache, auf das Ventil k wirkende Feder hat nicht die Aufgabe, das Ventil dicht zu halten, sondern sie soll nur ein unnötiges Spielen des Ventilkegels verhindern. Die Verstellung der Scheibe o und des an ihr sitzenden, das Ventil k offen stoßenden Nockens ia erfolgt vom Regler aus ohne jeden Widerstand, wenn der Ventilschaft m den Nocken n nicht berührt.According to the invention, in this essentially known fuel pump device, the valve k is not held in the closed position by spring pressure, but by the pressure of the fuel, in that the space above the valve communicates with the pump chamber f through the passages p. A weak spring acting on the valve k does not have the task of keeping the valve tight, but is only intended to prevent unnecessary play of the valve cone. The adjustment of the disk o and the cam ia seated on it and pushing the valve k open takes place from the controller without any resistance if the valve stem m does not touch the cam n.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK95481D DE435181C (en) | 1925-08-25 | 1925-08-25 | Adjustable fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK95481D DE435181C (en) | 1925-08-25 | 1925-08-25 | Adjustable fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE435181C true DE435181C (en) | 1926-10-09 |
Family
ID=7238137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK95481D Expired DE435181C (en) | 1925-08-25 | 1925-08-25 | Adjustable fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE435181C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019507B (en) * | 1953-04-18 | 1957-11-14 | Kugelfischer G Schaefer & Co | Fuel injection pump |
| US2843043A (en) * | 1954-06-15 | 1958-07-15 | Schneider Wilhelm | Injection pumps |
-
1925
- 1925-08-25 DE DEK95481D patent/DE435181C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019507B (en) * | 1953-04-18 | 1957-11-14 | Kugelfischer G Schaefer & Co | Fuel injection pump |
| US2843043A (en) * | 1954-06-15 | 1958-07-15 | Schneider Wilhelm | Injection pumps |
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