DE514781C - Arrangement of the fuel pumps of double-acting multi-cylinder internal combustion engines with jet atomization - Google Patents

Arrangement of the fuel pumps of double-acting multi-cylinder internal combustion engines with jet atomization

Info

Publication number
DE514781C
DE514781C DEM113060D DEM0113060D DE514781C DE 514781 C DE514781 C DE 514781C DE M113060 D DEM113060 D DE M113060D DE M0113060 D DEM0113060 D DE M0113060D DE 514781 C DE514781 C DE 514781C
Authority
DE
Germany
Prior art keywords
double
internal combustion
pumps
arrangement
combustion engines
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
Application number
DEM113060D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
Publication date
Priority to DEM113060D priority Critical patent/DE514781C/en
Application granted granted Critical
Publication of DE514781C publication Critical patent/DE514781C/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/13Special devices for making an explosive mixture; Fuel pumps
    • F02M2700/1317Fuel pumpo for internal combustion engines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Brennkraftmaschinen mit Strahlzerstäubung erfordern wegen der hohen Einspritzdrücke möglichst kurze Rohrleitungen von der Brennstoffpumpe zur Einspritzdüse, um ein Aufreißen der Leitung zu vermeiden. Diese Forderung erlangt um so größere Bedeutung, wenn es sich um schnellaufende Maschinen handelt. Bei diesen folgen die einzelnen Einspritzungen in Bruchteilen von Sekunden aufeinander. NimmtInternal combustion engines with jet atomization require because of the high injection pressures The shortest possible pipes from the fuel pump to the injection nozzle to avoid tearing to avoid the line. This requirement becomes all the more important when it is are high-speed machines. These are followed by the individual injections in Fractions of seconds on each other. Takes

to man beispielsweise eine Zweitaktmaschine mit iooo Umdrehungen in der Minute, so treffen auf die Sekunde bereits i6 bis 17 Einspritzungen. Bei den hohen Einspritzdrücken von 250 bis 300 at und dem schlagartigen Verlauf der Einspritzung erhellt ohne weiteres, welchen hohen Beanspruchungen die Einspritzleitungen unterworfen sind, wenn sie in so schneller Reihenfolge Druckunterschiede von ο bis 300 at aushalten müssen, Die Erfahrung hat gezeigt, daß nurFor example, if you have a two-stroke machine with 10000 revolutions per minute, you will encounter the second already i6 to 17 injections. At the high injection pressures of 250 to 300 at and the sudden course of the injection makes it easy to see what a high one The injection lines are subject to stress when they are in such a rapid sequence Must withstand pressure differences of ο to 300 at, experience has shown that only

ao kurze Rohrleitungen diesen Anforderungen widerstehen, während mit zunehmender Rohrlänge die Rissegefahr ständig wächst.ao short pipelines withstand these requirements, while as the pipe length increases the risk of cracks is constantly growing.

Es ist daher nicht möglich, die sonst bei Mehrzylindermaschinen gebräuchliche Zusammenfassung der verschiedenen Brennstoffpumpen zu einem Block mit gemeinsamem Antrieb der Einzelpumpen zu verwenden, weil hierbei die von den Brennstoffpumpen nach den äußeren Zylindern führenden Rohrleitungen immer langer werden. Man ist daher gezwungen, von der bekannten Maßnahme Gebrauch zu machen, die Brennstoffpumpen unmittelbar an dem dazugehörigen Arbeitszylinder anzuordnen. Dies führt jedoch bei doppelt wirkenden Maschinen," vor allem wegen des Antriebes der Brennstoffpumpen, zu unbequemen Bauarten. Es werden zwei Nockenwellen für die Brennstoffpumpen der beiden Zylinderseiten und eine der Zahl der Brennstoffpumpen entsprechende Nockenzahl notwendig, die sich bei umsteuerbaren Maschinen verdoppelt. Dadurch wird die Maschine schwerer und teurer.It is therefore not possible to use the summary that is otherwise used in multi-cylinder machines the different fuel pumps to be used in one block with a common drive for the individual pumps, because this is the case the pipes leading from the fuel pumps to the outer cylinders are getting longer will. One is therefore forced to make use of the known measure that To arrange fuel pumps directly on the associated working cylinder. this However, with double-acting machines, "mainly because of the drive of the fuel pumps, too uncomfortable designs. There will be two camshafts for the fuel pumps of the two cylinder sides and one of the number of Fuel pumps required a corresponding number of cams, which can be found in reversible machines doubled. This makes the machine heavier and more expensive.

Die Erfindung besteht darin, daß die einzelnen Pumpen in an sich bekannter Weise unmittelbar an dem zugehörigen Zylinder angeordnet und die beiden Pumpen jedes Arbeitszylinders so diametral gegenüber zu der in der Zylindermitte angeordneten Nockenwelle in einem Gehäuse vereinigt sind, daß sie in an sich bekannter Weise von einer gemeinsamen Nocke angetrieben werden. So wird für eine doppelt wirkende Brennkraftmaschine ein einfacher Pumpenantrieb geschaffen, der die Forderung möglichst kurzer Brennstoffleitungen erfüllt und dazu den weiteren Vorteil ergibt, daß alle Brennstoffleitungen gleich lang sind, also für jeden Zylinder passen. Es sind daher bei Schiffsmaschinen nur eine geringere Zahl von Reserveleitungen notwendig.The invention consists in that the individual pumps directly in a manner known per se arranged on the associated cylinder and the two pumps of each working cylinder so diametrically opposite to the camshaft arranged in the cylinder center in a housing are combined that they are driven in a manner known per se by a common cam. A simple pump drive is thus created for a double-acting internal combustion engine, which meets the requirement of the shortest possible fuel lines and the other The advantage is that all fuel lines are of the same length, so fit for each cylinder. Only a small number of reserve lines are therefore necessary for ship engines.

In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel in Abb. ι in Vorderansicht und inIn the drawing, the invention is shown in one embodiment in Fig. Ι in front view and in

Abb. 2 in Seitenansicht mit Schnitt durch die Brennstoffpumpen dargestellt.Fig. 2 is shown in a side view with a section through the fuel pumps.

In Abb. ι sind mit a die einzelnen Zylinder einer doppelt wirkenden Mehrzylindermaschine bezeichnet, in die der Brennstoff unmittelbar nach den bekannten Grundsätzen der Strahlzerstäubung mittels der Brennstoffpumpen b eingespritzt wird. Die beiden Pumpen jedes Zylinders sind in einem an den zugehörigen Arbeitszylindern befestigten Gehäuse c so vereinigt, daß sie symmetrisch zu der in der Zylindermitte angeordneten Nockenwelle d liegen und von einer gemeinsamen Nocke e, die auf die Pumpenstempel h einwirkt, ihren Antrieb erhalten. Infolge dieser Ausbildung und Anordnung ist es möglich, die von den Pumpen nach den Einspritzdüsen führenden, unter sich für sämtliche Zylinder gleich langen Brennstoffleitungen f möglichst kurz zu halten und eine einfache Bauart zu erzielen. Der Antrieb der Nockenwelle ä ist in der üblichen Weise von der Kurbelwelle g der Maschine abgeleitet.Are shown in Figure ι. With a the individual cylinders referred to a double-acting multi-cylinder engine in which the fuel is injected b immediately after the well-known principles of the jet spray means of the fuel pump. The two pumps of each cylinder are combined in a housing c attached to the associated working cylinders so that they are symmetrical to the camshaft d arranged in the cylinder center and are driven by a common cam e which acts on the pump ram h. As a result of this design and arrangement, it is possible to keep the fuel lines f leading from the pumps to the injection nozzles and of the same length for all cylinders as short as possible and to achieve a simple design. The drive of the camshaft ä is derived in the usual way from the crankshaft g of the machine.

Claims (1)

Patentanspruch: g Claim: g Anordnung der Brennstoffpumpen von doppelt wirkenden Mehrzylinderbrennkraftmaschinen, insbesondere für Strahlzerstäubung, dadurch gekennzeichnet, daß die einzelnen Pumpen (δ) in an sich bekannter Weise unmittelbar an den dazugehörigen Zylindern (a) angeordnet und die beiden Pumpen jedes Arbeitszylinders so diametral gegenüber zu der in der Zylindermitte liegenden Nockenwelle (d). in einem Gehäuse (c) vereinigt sind, daß sie in ebenfalls an sich bekannter Weise von einer gemeinsamen Nocke (e) ihren Antrieb erhalten.Arrangement of the fuel pumps of double-acting multi-cylinder internal combustion engines, in particular for jet atomization, characterized in that the individual pumps (δ) are arranged in a manner known per se directly on the associated cylinders (a) and the two pumps of each working cylinder are diametrically opposite to that in the cylinder center lying camshaft (d). are combined in a housing (c) that they receive their drive in a manner also known per se from a common cam (e). Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEM113060D Arrangement of the fuel pumps of double-acting multi-cylinder internal combustion engines with jet atomization Expired DE514781C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM113060D DE514781C (en) Arrangement of the fuel pumps of double-acting multi-cylinder internal combustion engines with jet atomization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM113060D DE514781C (en) Arrangement of the fuel pumps of double-acting multi-cylinder internal combustion engines with jet atomization

Publications (1)

Publication Number Publication Date
DE514781C true DE514781C (en) 1930-12-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
DE (1) DE514781C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755205C (en) * 1935-02-10 1954-10-18 Messerschmitt Boelkow Blohm Fuel pump arrangement in four-stroke internal combustion engines
DE2945320A1 (en) * 1978-11-20 1980-05-22 Friedmann & Maier Ag Fuel pump for fuel injection engine - has casing in sections with spacers to bring outlets immediately next to cylinders served

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755205C (en) * 1935-02-10 1954-10-18 Messerschmitt Boelkow Blohm Fuel pump arrangement in four-stroke internal combustion engines
DE2945320A1 (en) * 1978-11-20 1980-05-22 Friedmann & Maier Ag Fuel pump for fuel injection engine - has casing in sections with spacers to bring outlets immediately next to cylinders served

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