DE665886C - Fuel injection pump for pilot and main injection - Google Patents
Fuel injection pump for pilot and main injectionInfo
- Publication number
- DE665886C DE665886C DEO22708D DEO0022708D DE665886C DE 665886 C DE665886 C DE 665886C DE O22708 D DEO22708 D DE O22708D DE O0022708 D DEO0022708 D DE O0022708D DE 665886 C DE665886 C DE 665886C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- seat
- double
- fuel injection
- main
- 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
- 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
- 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
- F02M2700/07—Nozzles and injectors with controllable fuel supply
- F02M2700/078—Injectors combined with fuel injection pump
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
Brennstoff-Einspritzpumpe für Vor- und Haupteinspritzung Es ist bekannt, daß bei kompressorlosen Dieselmotoren eine Verkürzung des Zündverzuges und damit ein weicheres Arbeiten dadurch erzielt werden kann, daß man kurz vor der Haupteinspritzung des Brennstoffes eine ganz geringe Menge desselben einspritzt.Fuel injection pump for pilot and main injection It is known that with compressorless diesel engines a shortening of the ignition delay and thus a smoother working can be achieved by shortly before the main injection of the fuel injects a very small amount of the same.
Diese Voreinspritzung kann durch Steuerung der Pumpe mittels Vornocken oder Vorüberströmung vom Kolben aus, oder durch aufein.anderfolgende Öffnung der Düse während desselben Nadelhubes geschehen.This pre-injection can be carried out by controlling the pump by means of pre-cams or pre-flow from the piston, or through successive opening of the Nozzle happen during the same needle stroke.
Die ersteren Steuerungsarten ergeben leicht zu große Voreinspritzmengen, die zweite Art ist nur durch empfindliche und daher nicht dauernd zuverlässige Ausführungen zum doppelten Abschluß der Nadel erreichbar.The former types of control easily result in too large pilot injection quantities, the second type is only due to sensitive and therefore not permanently reliable designs reachable for double termination of the needle.
Bei der vorliegenden Erfindung wird die erwünschte Wirkung, nämlich, d:aß die Förderung der Pumpe nach der Düse zuerst freigegeben, dann auf eine ganz kurze Zeit unterbrochen und dann erst endgültig durchgeführt wird, wodurch sich eine kurze, dem Hauptdruckanstieg in der Düse vorgehende Druckwelle ergibt, dadurch erzielt, daß der Weg vom Pumpenarbeitsraum nach derDüse durch zwei selbsttätige Druickventile gesteuert wird, von denen das eine ein gar nicht oder nur gering belastetes Doppelventil ist, das nach kurzem Hub wieder schließt, und das andere ein stark belastetes nach der Düse hin öffnendes Rückschlagventil ist, das die Hauptmenge des Brennstoffes durchtreten läßt.In the present invention, the desired effect, namely, d: ate the delivery of the pump after the nozzle was released first, then on a whole interrupted for a short time and only then finally carried out, which means that a short pressure wave preceding the main pressure rise in the nozzle results from this achieved that the path from the pump working space to the nozzle by two automatic Pressure valves are controlled, one of which is not or only slightly loaded Is a double valve that closes again after a short stroke, and the other is a strong one loaded check valve opening towards the nozzle is the main amount the fuel can pass.
Die Steuerung des ersten. Weges, der Voreinspritzung, wird am besten durch einkleines Doppelkegelventil bewirkt.The control of the first. Way, the pilot injection, is best caused by a small double cone valve.
Sobald der obere Kegel den Weg nach der Düse wieder schließt, entsteht in der Druckleitung ein kurzer Druckabfall, der ein Schließen der Nadel bewirkt. Der Druck in dem Pumpenarbeitsraum steigt nun an und wird nach kurzer Zeit, die höhere Belastung des Hauptventils überwindend, dieses anheben und damit den Hauptbrennstoffweg freigeben. Zur Vereinfachung der Bauform ist es vorteilhaft, die beiden Ventile zentrisch zueinander anzuordnen.As soon as the upper cone closes the path to the nozzle again, arises a brief pressure drop in the pressure line that causes the needle to close. The pressure in the pump working space now rises and after a short time, the Overcoming higher load on the main valve, raise it and thus the main fuel path release. To simplify the design, it is advantageous to use the to arrange both valves centrally to each other.
fü.hrungsform.en In den Zeichnungen der Erfindung sind mehrere dargestcllt,:@ Ap@-,,! In Abb. r ist ein in der Pumpendruck leitung geführtes Doppelkegelventil A gezeigt; welches auf dem unteren festen Sitz E aufruht und mit seinem oberen Kegel in angehobenem Zustand dichtend auf dem oberen Sitz des Hauptventils B ruht, sobald es bis zur Hubgrenze gehoben wird. Das Hauptventil B wird durch eine starke Feder C mit einem Druck von .etwa 25 Atm. auf seinen Sitz D, gedrückt, welcher durch denselben Kegelmantel wie der feste Sitz E des DoppelventilsA gebildet sein kann.Guide forms In the drawings of the invention several are shown: @ Ap @ - ,,! In Fig. R there is a double cone valve in the pump pressure line A shown; which rests on the lower fixed seat E and with its upper cone rests sealingly in the raised state on the upper seat of the main valve B as soon as it is lifted to the stroke limit. The main valve B is made by a strong spring C with a pressure of about 25 atm. on his seat D, pressed, which by the same Cone shell like the fixed seat E of the double valve A can be formed.
In Abb. 2 ist das Doppelkegelventil A im Hauptventil B geführt und hat dort seinen oberen Sitz, während der untere Sitz E sich gemeinsam mit dem Sitz D des Hauptventils im Pumpenkörper befindet.In Fig. 2, the double cone valve A is guided in the main valve B and has its upper seat there, while the lower seat E is shared with the seat D of the main valve is located in the pump body.
In Abb. 3 ist das Doppelkegelventil A vollständig in das Hauptventil B selbst hineinverlegt.In Fig. 3, the double cone valve A is completely in the main valve B moved into it.
Sein unterer Sitz E befindet sich in diesem. Sein oberer Sitz in einem Einsatzstück G, welches durch die Druckfeder C des Hauptventils dichtend auf den Ventilkörper des Hauptventils B gedrückt wird und auch die Führung für das DoppelkegelventilA enthält.Its lower seat E is in this. His upper seat in one Insert G, which is sealed by the compression spring C of the main valve on the The valve body of the main valve B is pressed and also the guide for the double cone valve A. contains.
Dieses kann auch mit einer leichten Feder F belastet werden.This can also be loaded with a light spring F.
Abb. q. zeigt im wesentlichen die zuletzt beschriebene Anordnung, jedoch unter Anwendung eines Kugelventils A an Stelle des Doppelkegelventils, welches zwischen dem Hauptventil B und dem Einsatzstück G sitzt. Auch die Kugel kann, wenn nötig, mit einer kleinen Feder belastet werden.Fig.q. shows essentially the arrangement last described, but using a ball valve A instead of the double cone valve which seated between the main valve B and the insert G. Even the ball can, if necessary to be loaded with a small spring.
Beim Schließen des Hauptventils wird das Doppelventil sich in jedem Falle noch auf seinem oberen Sitz befinden und erst dann durch den rückkehrenden Flüssigkeitsstrom auf den festen Sitz gedrückt werden. Hierbei wird es eine kleine Menge Brennstoff zurückfließen lassen, was für die Entlastung der Druckleitung günstig ist. An Stelle der Ventile können sinngemäß angeordnete Schieber treten.When the main valve closes, the double valve will turn into each one Trap is still on its upper seat and only then through the returning Liquid flow are pressed onto the tight fit. Here it will be a small one Allow the amount of fuel to flow back, which is beneficial for relieving the pressure line is. Analogously arranged slides can be used in place of the valves.
Die Stärke der voreilenden Druckhelle kann außer durch die Höhe der Belastung Ales Druckventils durch die Hubhöhe, die 14sse und nötigenfalls die leichte Belastung des Doppelventils bemessen werden.The strength of the leading print light can be determined by the height of the Load on Ales pressure valve by the lift height, the 14sse and, if necessary, the light one Load of the double valve can be measured.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO22708D DE665886C (en) | 1936-12-12 | 1936-12-12 | Fuel injection pump for pilot and main injection |
FR838221D FR838221A (en) | 1936-12-12 | 1938-05-21 | Pressure distribution for fuel injection pumps |
GB16011/38A GB515231A (en) | 1936-12-12 | 1938-05-28 | Improvements in or relating to pressure control systems for fuel injection pumps |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO22708D DE665886C (en) | 1936-12-12 | 1936-12-12 | Fuel injection pump for pilot and main injection |
FR838221T | 1938-05-21 | ||
GB16011/38A GB515231A (en) | 1936-12-12 | 1938-05-28 | Improvements in or relating to pressure control systems for fuel injection pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
DE665886C true DE665886C (en) | 1939-08-11 |
Family
ID=10069565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO22708D Expired DE665886C (en) | 1936-12-12 | 1936-12-12 | Fuel injection pump for pilot and main injection |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE665886C (en) |
FR (1) | FR838221A (en) |
GB (1) | GB515231A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1037766B (en) * | 1954-09-25 | 1958-08-28 | Kloeckner Humboldt Deutz Ag | Injection nozzle for internal combustion engines |
DE1119050B (en) * | 1956-11-29 | 1961-12-07 | Pierre Etienne Bessiere | Fuel injection pump for internal combustion engines |
US3046896A (en) * | 1956-02-28 | 1962-07-31 | Napier & Son Ltd | Fuel injection pumps for internal combustion engines |
FR2001457A1 (en) * | 1968-02-07 | 1969-09-26 | Cav Ltd | |
FR2230871A1 (en) * | 1973-05-25 | 1974-12-20 | Cav Ltd | |
FR2532689A1 (en) * | 1982-09-08 | 1984-03-09 | Lucas Ind Plc | IC engine fuel injection pump |
US4541455A (en) * | 1983-12-12 | 1985-09-17 | Tritec Industries, Inc. | Automatic vent valve |
EP1270931A2 (en) * | 2001-06-27 | 2003-01-02 | Wärtsilä Technology Oy AB | Fuel system shut-off valve |
WO2004040127A1 (en) * | 2002-10-17 | 2004-05-13 | Robert Bosch Gmbh | Valve for the control of fluids |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2667891A (en) * | 1948-03-22 | 1954-02-02 | Proctor Electric Co | Pressure-operated actuating and relief valve |
US2704035A (en) * | 1948-05-06 | 1955-03-15 | Nordberg Manufacturing Co | Injection pump for dual fuel engine |
US2710627A (en) * | 1951-06-12 | 1955-06-14 | Proctor Electric Co | Apparatus for controlling a pressure cooker |
US2756772A (en) * | 1953-02-16 | 1956-07-31 | Cherry Burrell Corp | Pressure operated valve |
US4068680A (en) * | 1976-07-21 | 1978-01-17 | Robertshaw Controls Company | Self-contained vent valve unit and system utilizing the same |
IT206877Z2 (en) * | 1985-10-22 | 1987-10-12 | Weber Spa | CONSTANT PRESSURE DELIVERY VALVE FOR FUEL INJECTION PUMPS FOR DIESEL CYCLE ENGINES |
ATE451548T1 (en) * | 2006-05-19 | 2009-12-15 | Ct Studi Componenti Per Veicol | HIGH PRESSURE FUEL PUMP |
-
1936
- 1936-12-12 DE DEO22708D patent/DE665886C/en not_active Expired
-
1938
- 1938-05-21 FR FR838221D patent/FR838221A/en not_active Expired
- 1938-05-28 GB GB16011/38A patent/GB515231A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1037766B (en) * | 1954-09-25 | 1958-08-28 | Kloeckner Humboldt Deutz Ag | Injection nozzle for internal combustion engines |
US3046896A (en) * | 1956-02-28 | 1962-07-31 | Napier & Son Ltd | Fuel injection pumps for internal combustion engines |
DE1119050B (en) * | 1956-11-29 | 1961-12-07 | Pierre Etienne Bessiere | Fuel injection pump for internal combustion engines |
FR2001457A1 (en) * | 1968-02-07 | 1969-09-26 | Cav Ltd | |
FR2230871A1 (en) * | 1973-05-25 | 1974-12-20 | Cav Ltd | |
FR2532689A1 (en) * | 1982-09-08 | 1984-03-09 | Lucas Ind Plc | IC engine fuel injection pump |
US4541455A (en) * | 1983-12-12 | 1985-09-17 | Tritec Industries, Inc. | Automatic vent valve |
EP1270931A2 (en) * | 2001-06-27 | 2003-01-02 | Wärtsilä Technology Oy AB | Fuel system shut-off valve |
EP1270931A3 (en) * | 2001-06-27 | 2004-02-11 | Wärtsilä Finland Oy | Fuel system shut-off valve |
WO2004040127A1 (en) * | 2002-10-17 | 2004-05-13 | Robert Bosch Gmbh | Valve for the control of fluids |
Also Published As
Publication number | Publication date |
---|---|
FR838221A (en) | 1939-03-01 |
GB515231A (en) | 1939-11-29 |
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