DE19750298A1 - Internal combustion motor fuel injection for diesel motors in common rail system - Google Patents
Internal combustion motor fuel injection for diesel motors in common rail systemInfo
- Publication number
- DE19750298A1 DE19750298A1 DE19750298A DE19750298A DE19750298A1 DE 19750298 A1 DE19750298 A1 DE 19750298A1 DE 19750298 A DE19750298 A DE 19750298A DE 19750298 A DE19750298 A DE 19750298A DE 19750298 A1 DE19750298 A1 DE 19750298A1
- Authority
- DE
- Germany
- Prior art keywords
- internal combustion
- pressure pump
- injection
- high pressure
- combustion engine
- 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- Withdrawn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
- 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
-
- 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
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
Description
Die Erfindung bezieht sich auf eine Brennkraftmaschine mit Hochdruckeinspritz system gemäß dem Gattungsbegriff des Patentanspruches 1.The invention relates to an internal combustion engine with high-pressure injection system according to the preamble of claim 1.
Neue Einspritzsysteme für Dieselmotoren arbeiten nach dem bekannten System "Common Rail". Dabei wird der Brennstoff durch mindestens eine Hochdruckpumpe in einen Speicher gefördert. Von diesem Speicher wird er über Einspritzleitungen zu den Einspritzdüsen gefördert. Die Einspritzung wird über schnelle Magnetventile gere gelt, welche unmittelbar den Einspritzdüsen vorgelagert sind. Bei einem derartigen Einspritzsystem stehen alle Komponenten unter konstant hohem Druck der 1500 bar übersteigt. Daraus resultiert das Problem, daß Undichtheiten in Form von Mikrorissen an den Komponenten zu einem ständigen Leckverlust führen. Bei konventionellem Einspritzsystem wirkt der Druck nur während einer relativ kurzen Einspritzphase, so daß sich Leckverluste weit weniger auswirken.New injection systems for diesel engines work according to the familiar system "Common Rail". The fuel is supplied by at least one high pressure pump promoted to a store. From this memory it is closed via injection lines the injection nozzles promoted. The injection is done via fast solenoid valves applies, which are upstream of the injection nozzles. With such a Injection system, all components are under constant high pressure of 1500 bar exceeds. This results in the problem of leaks in the form of micro cracks cause permanent leakage of the components. With conventional Injection system, the pressure only works during a relatively short injection phase, so that leakage losses have far less impact.
Aufgabe der Erfindung ist es daher unvermeidbare Leckverluste im System "Common Rail" nicht nach außen dringen zu lassen.The object of the invention is therefore unavoidable leakage losses in the "Common" system Rail "not to let outside.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspru ches 1.This object is achieved by the characterizing features of the patent claim ches 1.
Durch die Verlegung der Einspritzleitungen unter der Ventilhaube gelangen Leckver luste nicht in die Umgebung, gleiches gilt für Leckverluste ab der Hochdruckpumpe, welche mit dem Zylinderkopf eine bauliche Einheit bildet. Durch Mikrorisse tritt fein zerstäubter Brennstoff aus, welcher sich an heißen Abgasrohren entzünden kann. Durch die erfindungsgemäße Anordnung aller druckführenden Elemente unter der Ventilhaube werden Leckverluste und deren Folgen vermieden. By laying the injection lines under the valve cover, leakage occurs do not run into the environment, the same applies to leakage from the high pressure pump, which forms a structural unit with the cylinder head. Through micro cracks occurs fine atomized fuel, which can ignite on hot exhaust pipes. Due to the arrangement of all pressure-carrying elements according to the invention under the Leakage losses and their consequences are avoided.
Vorteilhafte Weiterbildungen der Erfindung können den Unteransprüchen 2 bis 4 ent nommen werden.Advantageous developments of the invention can be found in dependent claims 2 to 4 be taken.
Ausführungsbeispiele der Erfindung sind in Zeichnungen dargestellt. Es zeigt:Embodiments of the invention are shown in drawings. It shows:
Fig. 1 eine Seitenansicht einer Brennkraftmaschine mit stirnseitig ange ordneter Hochdruckpumpe, Fig. 1 is a side view of an internal combustion engine with the front side arranged high pressure pump,
Fig. 2 eine Draufsicht einer Brennkraftmaschine nach Fig. 1, Fig. 2 is a plan view of an internal combustion engine according to Fig. 1,
Fig. 3 eine Seitenansicht einer Brennkraftmaschine mit seitlich angebauter Hochdruckpumpe, Fig. 3 is a side view of an internal combustion engine with side-mounted high-pressure pump,
Fig. 4 eine Draufsicht auf eine Brennkraftmaschine nach Fig. 3, Fig. 4 is a plan view of an internal combustion engine according to Fig. 3,
Fig. 5 eine Seitenansicht einer Brennkraftmaschine mit in den Zylinderkopf integrierter Hochdruckpumpe, Fig. 5 is a side view of an internal combustion engine with integrated into the cylinder head high-pressure pump,
Fig. 6 eine Draufsicht auf eine Brennkraftmaschine nach Fig. 5. Fig. 6 is a plan view of an internal combustion engine according to Fig. 5.
Fig. 1 zeigt in Seitenansicht eine Brennkraftmaschine mit einem Hochdruckeinspritz system nach System "Common Rail". Das Einspritzsystem besteht aus mindestens ei ner Hochdruckpumpe 1, einem Speicher 2, Einspritzleitungen 3, welche für jedes Ein spritzventil 4 vom Speicher 2 abzweigen. Da bei einem derartigen Einspritzsystem alle druckführenden Komponenten unter konstant hohen Druck stehen der 1500 bar über steigt, können sich Haarrisse bereits schwerwiegend auswirken. Der fein zerstäubt austretende Brennstoff kann sich sogar an Abgasrohren entzünden, mit dann nicht ab sehbaren Folgen. Fig. 1 shows a side view of an internal combustion engine with a high-pressure injection system according to the "common rail" system. The injection system consists of at least egg ner high pressure pump 1 , a memory 2 , injection lines 3 , which for each injection valve 4 branch from the memory 2 . Since all pressure-carrying components in a fuel injection system of this type are at a constantly high pressure that rises above 1500 bar, hairline cracks can already have a serious effect. The finely atomized fuel can even ignite on exhaust pipes, with unforeseeable consequences.
Erfindungsgemäß wird daher vorgeschlagen alle druckführenden Komponenten wie Speicher 2, Einspritzleitungen 3 und Einspritzdüsen 4 unter der Ventilhaube 5 anzu ordnen, und die Hochdruckpumpe 1 als bauliche Einheit mit dem Zylinderkopf 6 auszuführen. Somit ist gewährleistet, daß Leckagen nicht in die Umgebung gelangen können. According to the invention it is therefore proposed to arrange all pressure-carrying components such as accumulator 2 , injection lines 3 and injection nozzles 4 under the valve cover 5 , and to design the high-pressure pump 1 as a structural unit with the cylinder head 6 . This ensures that leaks cannot get into the environment.
Bei dem Ausführungsbeispiel gemäß Fig. 1 ist die Hochdruckpumpe 1 stirnseitig an den Zylinderkopf 6 angebaut, so daß die Verbindung von Hochdruckpumpe 1 und Speicher 2 auf alle Fälle unter der Ventilhaube 5 zu liegen kommt.In the embodiment shown in FIG. 1, the high-pressure pump 1 is attached to the front of the cylinder head 6 , so that the connection of the high-pressure pump 1 and the accumulator 2 comes to rest under the valve cover 5 in all cases.
Ebenso sind alle vom Speicher 2 abzweigenden Einspritzleitungen 3 und deren Ver bindungen mit den Einspritzventilen 4 unter der Ventilhaube 5 angeordnet.Likewise, all of the injection lines 3 branching off from the memory 2 and their connections with the injection valves 4 are arranged under the valve cover 5 .
Fig. 2 zeigt die Anordnung nach Fig. 1 in Draufsicht. Die Hochdruckpumpe 1 ist stirn seitig an den Zylinderkopf 6 angeflanscht und deren Verbindung mit dem Speicher 2 liegt unter der Ventilhaube 5. Fig. 2 shows the arrangement of FIG. 1 in plan view. The high-pressure pump 1 is flanged on the end face to the cylinder head 6 and its connection to the accumulator 2 is located under the valve cover 5 .
Nach den Fig. 3 und 4 kann die Hochdruckpumpe 1 auch seitlich am Zylinderkopf 6 angeflanscht werden. Die Verbindung der Hochdruckpumpe 1 mit Speicher, und die Verbindung von Einspritzleitungen und Einspritzdüsen erfolgt äquivalent zu den Fig. 1 und 2 und wurde deshalb nicht explizit dargestellt. FIGS. 3 and 4, the high-pressure pump 1 can also be flanged laterally on the cylinder head 6. The connection of the high-pressure pump 1 to the accumulator, and the connection of injection lines and injection nozzles is equivalent to FIGS. 1 and 2 and was therefore not shown explicitly.
Fig. 4 zeigt eine Draufsicht auf Fig. 3. Es ist möglich, eine zweite Hochdruckpumpe 1 seitlich anzuflanschen. Die Hochdruckpumpen 1 sind mit Speicher 2 unmittelbar ver bunden, so daß Lecköl unter der Ventilhaube 5 bleibt. Die Pfeile deuten an, daß die Hochdruckpumpen in axialer Richtung seitlich am Zylinderkopf 6 verschoben werden können. FIG. 4 shows a top view of FIG. 3. It is possible to flange a second high-pressure pump 1 to the side. The high pressure pumps 1 are directly connected to storage 2 , so that leakage oil remains under the valve cover 5 . The arrows indicate that the high-pressure pumps can be moved laterally on the cylinder head 6 in the axial direction.
Nach den Fig. 5 und 6 kann die Hochdruckpumpe 1 unmittelbar in den Zylinder
kopf 6 integriert werden und liegt damit samt den nicht dargestellten Komponenten
wie Speicher, Einspritzleitungen und Einspritzdüsen unter der Ventilhaube 5.
Da das Antriebsdrehmoment der Hochdruckpumpe 1 erheblich kleiner ist als das einer
vergleichbaren konventionellen Einspritzpumpe ist es vorteilhaft die Hochdruckpum
pe 1 von einer obenliegenden Nockenwelle anzutreiben.According to FIGS. 5 and 6 the high pressure pump 1 can directly in the cylinder head 6 are integrated and is thus, together with the non-illustrated components, such as memory, injection lines and injectors of the valve cover 5.
Since the drive torque of the high-pressure pump 1 is considerably smaller than that of a comparable conventional injection pump, it is advantageous to drive the high-pressure pump 1 from an overhead camshaft.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19750298A DE19750298A1 (en) | 1997-11-13 | 1997-11-13 | Internal combustion motor fuel injection for diesel motors in common rail system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19750298A DE19750298A1 (en) | 1997-11-13 | 1997-11-13 | Internal combustion motor fuel injection for diesel motors in common rail system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19750298A1 true DE19750298A1 (en) | 1999-05-20 |
Family
ID=7848612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19750298A Withdrawn DE19750298A1 (en) | 1997-11-13 | 1997-11-13 | Internal combustion motor fuel injection for diesel motors in common rail system |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19750298A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002001068A1 (en) * | 2000-06-29 | 2002-01-03 | Robert Bosch Gmbh | Common rail system |
EP1063420A3 (en) * | 1999-06-25 | 2003-08-06 | Delphi Technologies, Inc. | Fuel supply system |
WO2005052359A1 (en) * | 2003-11-28 | 2005-06-09 | Robert Bosch Gmbh | Fuel injection system |
DE102006035296A1 (en) * | 2006-07-31 | 2008-02-07 | Dr.Ing.H.C. F. Porsche Ag | Fuel injection system component`s e.g. high pressure rail, tightness testing method for motor vehicle, involves detecting discharge of testing medium in test volume, and removing components from volume after testing components` tightness |
US11028811B2 (en) | 2015-05-20 | 2021-06-08 | Deutz Aktiengesellschaft | Internal combustion engine including at least one electric motor |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3633136C2 (en) * | 1986-09-30 | 1990-10-04 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
WO1993001408A1 (en) * | 1991-07-02 | 1993-01-21 | Saab-Scania Aktiebolag | Arrangement for a fuel line in an internal combustion engine |
DE4427506A1 (en) * | 1993-08-03 | 1995-02-09 | Caterpillar Inc | Method and conversion equipment or kit for converting an engine to a hydraulically operated fuel injection or injection system |
DE4408385A1 (en) * | 1993-06-03 | 1995-09-14 | Opel Adam Ag | Mounting for fuel injector valve of Diesel engine |
GB2288852A (en) * | 1994-04-28 | 1995-11-01 | Nippon Denso Co | Mounting high pressure fuel pumps on i.c.engines |
EP0690221A1 (en) * | 1994-06-27 | 1996-01-03 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
US5501197A (en) * | 1993-06-15 | 1996-03-26 | Perkins Limited | Fuel injection apparatus |
DE19536459A1 (en) * | 1994-10-03 | 1996-04-04 | Caterpillar Inc | Dual function clamp assembly for a hydraulically operated fuel injector |
DE4434783A1 (en) * | 1994-09-29 | 1996-04-11 | Daimler Benz Ag | Fuel injection system for a multi-cylinder internal combustion engine |
DE19534050A1 (en) * | 1995-09-14 | 1997-03-20 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines |
DE19680563T1 (en) * | 1995-06-30 | 1997-10-16 | Cummins Engine Co Inc | High pressure fuel line connection |
-
1997
- 1997-11-13 DE DE19750298A patent/DE19750298A1/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3633136C2 (en) * | 1986-09-30 | 1990-10-04 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
WO1993001408A1 (en) * | 1991-07-02 | 1993-01-21 | Saab-Scania Aktiebolag | Arrangement for a fuel line in an internal combustion engine |
DE4408385A1 (en) * | 1993-06-03 | 1995-09-14 | Opel Adam Ag | Mounting for fuel injector valve of Diesel engine |
US5501197A (en) * | 1993-06-15 | 1996-03-26 | Perkins Limited | Fuel injection apparatus |
DE4427506A1 (en) * | 1993-08-03 | 1995-02-09 | Caterpillar Inc | Method and conversion equipment or kit for converting an engine to a hydraulically operated fuel injection or injection system |
GB2288852A (en) * | 1994-04-28 | 1995-11-01 | Nippon Denso Co | Mounting high pressure fuel pumps on i.c.engines |
EP0690221A1 (en) * | 1994-06-27 | 1996-01-03 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
DE4434783A1 (en) * | 1994-09-29 | 1996-04-11 | Daimler Benz Ag | Fuel injection system for a multi-cylinder internal combustion engine |
DE19536459A1 (en) * | 1994-10-03 | 1996-04-04 | Caterpillar Inc | Dual function clamp assembly for a hydraulically operated fuel injector |
DE19680563T1 (en) * | 1995-06-30 | 1997-10-16 | Cummins Engine Co Inc | High pressure fuel line connection |
DE19534050A1 (en) * | 1995-09-14 | 1997-03-20 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1063420A3 (en) * | 1999-06-25 | 2003-08-06 | Delphi Technologies, Inc. | Fuel supply system |
WO2002001068A1 (en) * | 2000-06-29 | 2002-01-03 | Robert Bosch Gmbh | Common rail system |
WO2005052359A1 (en) * | 2003-11-28 | 2005-06-09 | Robert Bosch Gmbh | Fuel injection system |
US7581529B2 (en) | 2003-11-28 | 2009-09-01 | Robert Bosch Gmbh | Fuel injector |
DE102006035296A1 (en) * | 2006-07-31 | 2008-02-07 | Dr.Ing.H.C. F. Porsche Ag | Fuel injection system component`s e.g. high pressure rail, tightness testing method for motor vehicle, involves detecting discharge of testing medium in test volume, and removing components from volume after testing components` tightness |
DE102006035296B4 (en) * | 2006-07-31 | 2009-02-19 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method and device for checking the tightness of the components of a fuel injection system |
US11028811B2 (en) | 2015-05-20 | 2021-06-08 | Deutz Aktiengesellschaft | Internal combustion engine including at least one electric motor |
DE102015006365B4 (en) | 2015-05-20 | 2021-09-30 | Deutz Aktiengesellschaft | Internal combustion engine with at least one electric motor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3633136C2 (en) | ||
DE4406901C2 (en) | Solenoid valve controlled injector for an internal combustion engine | |
DE4142940A1 (en) | ELECTRICALLY CONTROLLED PUMPEDUESE | |
DE19646920B4 (en) | Fuel injection system for engines | |
WO2005050003A1 (en) | Injector used to inject fuel into internal combustion chambers in internal combustion engines, particularly, a piezo-actuator controlled common-rail-injector | |
DE4422552C1 (en) | Method for injecting fuel into the combustion chamber of an internal combustion engine | |
DE4445980C2 (en) | Injection system | |
DE4401013A1 (en) | Fuel injection device for internal combustion engine | |
DE102004060003A1 (en) | Common rail fuel supply for multicylinder engine has at least two high-pressure pumps connected via separate pump line to one of supply lines | |
DE19634105A1 (en) | Injection valve for internal combustion engines | |
DE19715234A1 (en) | Valve for fuel injection system of internal combustion engine | |
DE19750298A1 (en) | Internal combustion motor fuel injection for diesel motors in common rail system | |
EP1088985B1 (en) | High pressure fuel injector for an internal combustion engine | |
DE112007000490T5 (en) | Fuel injection device with recessed check element upper part | |
DE19939425B4 (en) | Fuel injection system for an internal combustion engine | |
DE69619476T2 (en) | Fastening structure of injection valves for internal combustion engines | |
EP1361357A2 (en) | Fuel pump, in particular for an internal combustion engine with direct injection | |
DE3728961C2 (en) | ||
DE4404050C1 (en) | Injector with solenoid-valve control for an internal combustion engine | |
DE4304207C1 (en) | Fuel injection system with high-pressure accumulator for a multi-cylinder diesel internal combustion engine | |
DE10132248C2 (en) | Fuel injector with 2-way valve control | |
EP1185786B1 (en) | Injector for high-pressure fuel injection | |
DE19621021A1 (en) | Flow rate limiter for fuel injection system | |
DE19746568C2 (en) | Fuel injection system for a multi-cylinder internal combustion engine | |
DE19919665A1 (en) | Fuel injector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |