DE10350892A1 - Injection system for an internal combustion engine, in particular for a diesel engine - Google Patents
Injection system for an internal combustion engine, in particular for a diesel engine Download PDFInfo
- Publication number
- DE10350892A1 DE10350892A1 DE2003150892 DE10350892A DE10350892A1 DE 10350892 A1 DE10350892 A1 DE 10350892A1 DE 2003150892 DE2003150892 DE 2003150892 DE 10350892 A DE10350892 A DE 10350892A DE 10350892 A1 DE10350892 A1 DE 10350892A1
- Authority
- DE
- Germany
- Prior art keywords
- volume
- injector
- pump
- pressure pump
- integrated
- 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.)
- Withdrawn
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
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
-
- 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
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Die Erfindung bezieht sich auf ein Einspritzsystem für eine Brennkraftmaschine, insbesondere für einen Dieselmotor, mit einer Hochdruckpumpe 1 zur Kraftstoffeinspeisung in mindestens einen Injektor 4.1, 4.2, 4.3, 4.4 über mindestens eine zwischen der Hochdruckpumpe und dem Injektor angeordnete Kraftstoffleitung 5.1, 5.2, 5.3, 5.4 und mit einer der Hochdruckpumpe vorgeordneten Vorförderpumpe zur Förderung von Kraftstoffen aus einem Kraftstoffbehälter in die Hochdruckpumpe. Der Innendurchmesser der Kraftstoffleitung zwischen dem Ausgang der Hochdruckpumpe und dem Injektor liegt im Verhältnis zum integrierten Pumpenvolumen im Bereich von 0,025 bis 0,065 l/cm·2·, wobei das Volumen des Injektors im Verhältnis zum integrierten Pumpenvolumen bei 0,075 bis 0,25 beträgt.The invention relates to an injection system for an internal combustion engine, in particular for a diesel engine, with a high-pressure pump 1 for feeding fuel into at least one injector 4.1, 4.2, 4.3, 4.4 via at least one arranged between the high-pressure pump and the injector fuel line 5.1, 5.2, 5.3, 5.4 and with a high-pressure pump upstream prefeed pump for the promotion of fuels from a fuel tank in the high-pressure pump. The inner diameter of the fuel line between the outlet of the high pressure pump and the injector is in the range of 0.025 to 0.065 l / cm x 2 in relation to the integrated pump volume, with the volume of the injector being 0.075 to 0.25 in relation to the integrated pump volume.
Description
Die Erfindung bezieht sich auf ein Einspritzsystem für eine Brennkraftmaschine, insbesondere für einen Dieselmotor, mit einer Hochdruckpumpe zur Kraftstoffeinspeisung in mindestens einen Injektor über mindestens eine zwischen der Hochdruckpumpe und dem Injektor angeordneten Kraftstoffleitung und mit einer der Hochdruckpumpe vorgeordneten Vorförderpumpe zur Förderung von Kraftstoff aus einem Kraftstoffbehälter in die Hochdruckpumpe.The The invention relates to an injection system for an internal combustion engine, especially for a diesel engine, with a high-pressure pump for fuel injection in at least one injector over at least one disposed between the high-pressure pump and the injector Fuel line and with a high-pressure pump upstream prefeed pump to promote of fuel from a fuel tank into the high pressure pump.
Zum
Stand der Technik im Bereich der Einspritzsysteme für Brennkraftmaschinen,
insbesondere Dieselmotoren sind in dieser Beziehung beispielsweise
die
Aufgrund von Forderungen seitens des Automobilherstellers, immer kostengünstiger zu produzieren, muss in diesem Zusammenhang weiter nach Möglichkeiten gesucht werden, das bekannte Common-Rail-System bei gleichbleibender Wirkungsweise kostengünstiger zu gestalten.by virtue of demands from the car manufacturer, always cheaper To produce in this context must continue for opportunities are sought, the known common rail system at the same Mode of action more cost-effective to design.
Der vorliegenden Erfindung liegt dementsprechend die Aufgabe zugrunde, ein hydraulisches System zu schaffen, welches trotz in die Hochdruckpumpe integriertem Speichervolumen eine ver gleichbare hydraulische Stabilität bei einfacherer Gestaltung des gesamten Systems bewirkt.Of the The present invention is accordingly based on the object to create a hydraulic system, which despite in the high-pressure pump integrated storage volume comparable hydraulic stability with simpler Design of the entire system causes.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Innendurchmesser der Kraftstoffleitung zwischen dem Ausgang der Hochdruckpumpe und dem Injektor im Verhältnis zum integrierten Pumpvolumen im Bereich von 0,025 bis 0,065 l/cm2 liegt und dass das Volumen des Injektors im Verhältnis zum integrierten Pumpenvolumen 0,075 bis 0,25 beträgt. Es ergibt sich also eine überraschende Wirkung in der Kombination von maximalem Leitungsinnendurchmesser und maximal möglichem Volumen innerhalb des Injektors. Eine Optimierung dieser beiden Parameter ermöglicht eine Einspritzmengenstabilität wie die eines konventionellen Systems bei erheblich weniger Bauelementen bei kostengünstigerer Gestaltung.This object is achieved in that the inner diameter of the fuel line between the output of the high pressure pump and the injector in relation to the integrated pumping volume in the range of 0.025 to 0.065 l / cm 2 and that the volume of the injector in relation to the integrated pump volume 0.075 to 0th , 25 is. Thus, there is a surprising effect in the combination of maximum line internal diameter and maximum possible volume within the injector. Optimizing these two parameters allows injection rate stability like that of a conventional system with significantly fewer devices and more cost effective design.
In weiterer Ausgestaltung der Erfindung kann bei einer Hochdruckpumpe mit einer Blende an deren Hochdruckausgang das Verhältnis des Blendendurchmessers zum integrierten Pumpenvolumen 0,006 bis 0,02 l/cm2 sein. Diese Blende wird in jedem vorhandenen Hochdruckausgang eingebaut.In a further embodiment of the invention can be 0.006 to 0.02 l / cm 2 in a high-pressure pump with a diaphragm at the high pressure output, the ratio of the aperture diameter to the integrated pump volume. This panel is installed in any existing high pressure outlet.
Eine weitere Optimierung des gesamten hydraulischen Systems wird durch einen zusätzlichen Parameter geschaffen, nämlich das Verhältnis der Länge der Kraftstoffleitung zwischen der Hochdruckpumpe und dem jeweiligen Injektor und dem integrierten Pumpenvolumen, welches 3 bis 9 l/cm2 betragen kann.A further optimization of the entire hydraulic system is provided by an additional parameter, namely the ratio of the length of the fuel line between the high-pressure pump and the respective injector and the integrated pump volume, which can be 3 to 9 l / cm 2 .
Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.advantageous Further developments emerge from the subclaims.
Die Erfindung wird nachfolgend anhand eines in der ZEICHNUNG dargestellten Ausführungsbeispiels näher beschrieben. In der Zeichnung zeigen:The The invention will be described below with reference to one of the drawings embodiment described in more detail. In the drawing show:
Das
in
Diese
Hochdruckpumpe
Der
Innendurchmesser der Kraftstoffleitungen
Das
Verhältnis
der Länge
der Leitungen
Optimale Verhältnisse der vorgenannten Parameter ergeben sich durch folgende Werte:
- a) Leitungslänge zu integriertem Pumpenvolumen 4,4 l/cm2
- b) Blendendurchmesser am jeweiligen Hochdruckpumpenausgang zu
integriertem Pumpenvolumen 0,008 l/cm2 (nach
1 , vier vorhandene Hochdruckausgänge) - c) Leitungsdurchmesser zu integriertem Pumpenvolumen 0,03 l/cm2
- d) Injektorvolumen zu integriertem Pumpenvolumen 0,1.
- a) Cable length to integrated pump volume 4.4 l / cm 2
- b) Aperture diameter at the respective high pressure pump outlet to integrated pump volume 0,008 l / cm 2 (acc
1 , four existing high pressure outputs) - c) Cable diameter to integrated pump volume 0,03 l / cm 2
- d) Injector volume to integrated pump volume 0.1.
Der Winkel α wird erfahrungsgemäß im Bereich zwischen 5° und 40° variiert.Of the Angle α becomes according to experience in the field between 5 ° and 40 ° varies.
Aus
Durch die vorliegende Erfindung wird also ein sogenanntes railloses System geschaffen, welches bei erheblich geringerem Aufwand eine Verbesserung der Einspritzmengenstabilität im Gegensatz zu einem konventionellen System beinhaltet.By The present invention thus becomes a so-called railless system created, which at much lower cost an improvement the injection quantity stability unlike a conventional system involves.
Claims (5)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003150892 DE10350892A1 (en) | 2003-10-31 | 2003-10-31 | Injection system for an internal combustion engine, in particular for a diesel engine |
DE502004003549T DE502004003549D1 (en) | 2003-10-31 | 2004-09-27 | INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, ESPECIALLY FOR A DIESEL ENGINE |
EP04787218A EP1627146B1 (en) | 2003-10-31 | 2004-09-27 | Injection system for a combustion engine, particularly for a diesel engine |
PCT/EP2004/052318 WO2005042966A1 (en) | 2003-10-31 | 2004-09-27 | Injection system for a combustion engine, particularly for a diesel engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003150892 DE10350892A1 (en) | 2003-10-31 | 2003-10-31 | Injection system for an internal combustion engine, in particular for a diesel engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10350892A1 true DE10350892A1 (en) | 2005-06-09 |
Family
ID=34529973
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003150892 Withdrawn DE10350892A1 (en) | 2003-10-31 | 2003-10-31 | Injection system for an internal combustion engine, in particular for a diesel engine |
DE502004003549T Active DE502004003549D1 (en) | 2003-10-31 | 2004-09-27 | INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, ESPECIALLY FOR A DIESEL ENGINE |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE502004003549T Active DE502004003549D1 (en) | 2003-10-31 | 2004-09-27 | INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, ESPECIALLY FOR A DIESEL ENGINE |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1627146B1 (en) |
DE (2) | DE10350892A1 (en) |
WO (1) | WO2005042966A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005012928A1 (en) | 2005-03-21 | 2006-09-28 | Robert Bosch Gmbh | Fuel injection device for a multi-cylinder internal combustion engine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10118884A1 (en) * | 2001-04-18 | 2002-11-07 | Bosch Gmbh Robert | High-pressure fuel pump for a fuel system of a direct-injection internal combustion engine, fuel system and internal combustion engine |
DE10143423A1 (en) * | 2001-09-05 | 2003-05-08 | Bosch Gmbh Robert | Fuel injection system with injector hydraulically decoupled from the supply line |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4111365A (en) * | 1973-12-26 | 1978-09-05 | Isuzu Motors Limited | Fuel injection system and its nozzle holder |
EP0262539B1 (en) * | 1986-09-25 | 1991-01-09 | Ganser-Hydromag | Fuel injector unit |
DE69619949T2 (en) * | 1995-12-19 | 2002-11-14 | Nippon Soken | Reservoir fuel injection device |
DE19737968C1 (en) * | 1997-08-30 | 1998-12-10 | Daimler Benz Ag | Fuel injector for multiple cylinder internal combustion engine |
-
2003
- 2003-10-31 DE DE2003150892 patent/DE10350892A1/en not_active Withdrawn
-
2004
- 2004-09-27 EP EP04787218A patent/EP1627146B1/en not_active Expired - Fee Related
- 2004-09-27 WO PCT/EP2004/052318 patent/WO2005042966A1/en active IP Right Grant
- 2004-09-27 DE DE502004003549T patent/DE502004003549D1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10118884A1 (en) * | 2001-04-18 | 2002-11-07 | Bosch Gmbh Robert | High-pressure fuel pump for a fuel system of a direct-injection internal combustion engine, fuel system and internal combustion engine |
DE10143423A1 (en) * | 2001-09-05 | 2003-05-08 | Bosch Gmbh Robert | Fuel injection system with injector hydraulically decoupled from the supply line |
Also Published As
Publication number | Publication date |
---|---|
EP1627146A1 (en) | 2006-02-22 |
WO2005042966A1 (en) | 2005-05-12 |
DE502004003549D1 (en) | 2007-05-31 |
EP1627146B1 (en) | 2007-04-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
8139 | Disposal/non-payment of the annual fee |