[go: up one dir, main page]

DE102006040466A1 - Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine - Google Patents

Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine Download PDF

Info

Publication number
DE102006040466A1
DE102006040466A1 DE102006040466A DE102006040466A DE102006040466A1 DE 102006040466 A1 DE102006040466 A1 DE 102006040466A1 DE 102006040466 A DE102006040466 A DE 102006040466A DE 102006040466 A DE102006040466 A DE 102006040466A DE 102006040466 A1 DE102006040466 A1 DE 102006040466A1
Authority
DE
Germany
Prior art keywords
rail
supply path
fuel supply
combustion engine
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.)
Withdrawn
Application number
DE102006040466A
Other languages
German (de)
Inventor
Fabian Huslik
Harald Müller
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.)
Everllence SE
Original Assignee
MAN Diesel SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Diesel SE filed Critical MAN Diesel SE
Priority to DE102006040466A priority Critical patent/DE102006040466A1/en
Priority to FI20075345A priority patent/FI123868B/en
Priority to KR1020070051859A priority patent/KR20080020450A/en
Priority to JP2007218060A priority patent/JP2008057532A/en
Priority to CNA2007101483061A priority patent/CN101135287A/en
Publication of DE102006040466A1 publication Critical patent/DE102006040466A1/en
Withdrawn legal-status Critical Current

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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • 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
    • 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
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/107—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive pneumatic drive, e.g. crankcase pressure drive
    • 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
    • F02M59/38—Pumps characterised by adaptations to special uses or conditions
    • F02M59/42—Pumps characterised by adaptations to special uses or conditions for starting of engines
    • 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
    • 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
    • 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
    • F02M63/0265—Pumps feeding common rails
    • F02M63/027—More than one high pressure pump feeding a single common rail
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/60—Fuel-injection apparatus having means for facilitating the starting of engines, e.g. with valves or fuel passages for keeping residual pressure in 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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

Die Erfindung betrifft eine Brennkraftmaschine, mit einem Common-Rail-Einspritzsystem zum Einspritzen von Kraftstoff in Brennkammern der Brennkraftmaschine, mit einem ersten Kraftstoffzuführungspfad (12) zur Zuführung von Kraftstoff aus einem Kraftstofftank (11) zu einem Rail (10), wobei in den ersten Kraftstoffzuführungspfad zwischen Kraftstofftank und Rail eine Niederdruckpumpe (13) und eine Hochdruckpumpe (14) geschaltet ist, und mit einer in einen zweiten, ebenfalls zum Rail führenden Kraftstoffzuführungspfad (16) geschalteten Einrichtung (15) zur Erhöhung eines im Rail herrschenden Drucks in einer vorgegebenen Betriebsart der Brennkraftmaschine, insbesondere vor dem Starten derselben. Erfindungsgemäß ist die Einrichtung (15) zur Erhöhung des im Rail herrschenden Drucks in den zweiten Kraftstoffzuführungspfad (16) zwischen das Rail (10) und einen Zusatzkraftstofftank (17) geschaltet.The invention relates to an internal combustion engine, with a common rail injection system for injecting fuel into combustion chambers of the internal combustion engine, with a first fuel supply path (12) for supplying fuel from a fuel tank (11) to a rail (10), wherein in the first Fuel supply path between the fuel tank and rail, a low pressure pump (13) and a high pressure pump (14) is connected, and with a in a second, also leading to the rail fuel supply path (16) connected means (15) for increasing a pressure prevailing in the rail in a predetermined mode the internal combustion engine, in particular before starting the same. According to the invention, the means (15) for increasing the pressure prevailing in the rail in the second fuel supply path (16) between the rail (10) and an additional fuel tank (17) is connected.

Description

Die Erfindung betrifft eine Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1 bzw. 2.The The invention relates to an internal combustion engine according to the preamble of claim 1 or 2.

Aus der DE 101 55 381 A1 ist eine Brennkraftmaschine mit einem Common-Rail-Einspritzsystem bekannt. Dem sogenannten Rail des Einspritzsystems ist Kraftstoff über einen ersten Kraftstoffzuführungspfad zuführbar, wobei der erste Kraftstoffzuführungspfad zwischen dem Rail und einem Kraftstofftank verläuft, und wobei in den ersten Kraftstoffzuführungspfad eine Niederdruckpumpe sowie eine Hochdruckpumpe geschaltet ist. Nach der DE 101 55 381 A1 umfasst die dort offenbarte Brennkraftmaschine weiterhin eine Einrichtung zur Erhöhung eines im Rail herrschenden Drucks in einer vorgegebenen Betriebsart der Brennkraftmaschine, wobei die Einrichtung zur Erhöhung des im Rail herrschenden Drucks in einen zweiten, ebenfalls zum Rail führenden Kraftstoffzuführungspfad geschaltet ist. Der zweite Kraftstoffzuführungspfad verläuft dabei parallel zum ersten Kraftstoffzuführungspfad, d. h. beide Kraftstoffzuführungspfade entspringen am selben Kraftstofftank und führen zum selben Rail.From the DE 101 55 381 A1 is an internal combustion engine with a common rail injection system known. Fuel can be supplied to the so-called rail of the injection system via a first fuel supply path, the first fuel supply path extending between the rail and a fuel tank, and a low-pressure pump and a high-pressure pump being connected in the first fuel supply path. After DE 101 55 381 A1 The internal combustion engine disclosed therein further comprises a device for increasing a pressure prevailing in the rail in a predetermined operating mode of the internal combustion engine, wherein the means for increasing the pressure prevailing in the rail is connected in a second, also leading to the rail fuel supply path. The second fuel supply path runs parallel to the first fuel supply path, ie both fuel supply paths arise on the same fuel tank and lead to the same rail.

Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde, eine neuartige Brennkraftmaschine zu schaffen.Of these, Based on the present invention, the problem is based to create a novel internal combustion engine.

Nach einem ersten Aspekt der Erfindung wird dieses Problem durch eine Brennkraftmaschine gemäß Anspruch 1 gelöst. Hiernach ist die Einrichtung zur Erhöhung des im Rail herrschenden Drucks in den zweiten Kraftstoffzuführungspfad zwischen das Rail und einen Zusatzkraftstoffstank geschaltet.To In a first aspect of the invention, this problem is solved by a Internal combustion engine according to claim 1 solved. After that, the device for increasing the ruling in the rail Pressure in the second fuel supply path between the rail and an additional fuel tank switched.

Der erste Aspekt der hier vorliegenden Erfindung ist insbesondere dann von Vorteil, wenn die Brennkraftmaschine mit Schweröl betrieben wird, wobei dann der erste Kraftstoffzuführungspfad der Zuführung von Schweröl zum Rail der Brennkraftmaschine dient. In diesem Fall wird dann vorzugsweise im Zusatzkraftstofftank Dieselkraftstoff bereitgehalten, so dass für den zweiten Kraftstoffpfad, in den die Einrichtung zur Erhöhung des im Rail herrschenden Drucks geschaltet ist, keine Heizeinrichtung erforderlich ist.Of the The first aspect of the present invention is in particular then advantageous if the internal combustion engine operated with heavy oil is then, in which case the first fuel supply path of the supply of heavy oil to the rail of the internal combustion engine is used. In that case, then preferably held in the additional fuel tank diesel fuel, so for the second fuel path into which the means for increasing the in the rail prevailing pressure is switched, no heating device is required.

Nach einem zweiten Aspekt der Erfindung wird dieses Problem durch eine Brennkraftmaschine gemäß Anspruch 2 gelöst. Hiernach ist die Einrichtung zur Erhöhung des im Rail herrschenden Drucks in den zweiten Kraftstoffzuführungspfad zwischen das Rail und die Niederdruckpumpe geschaltet, derart, dass der zweite Kraftstoffzuführungspfad vom ersten Kraftstoffzuführungspfad zwischen der Niederdruckpumpe und der Hochdruckpumpe abzweigt.To In a second aspect of the invention, this problem is solved by a Internal combustion engine according to claim 2 solved. After that, the device for increasing the ruling in the rail Pressure in the second fuel supply path between the rail and the low-pressure pump are switched such that the second fuel supply path from the first fuel supply path branches off between the low pressure pump and the high pressure pump.

Der zweite Aspekt der hier vorliegenden Erfindung ist insbesondere bei mit Dieselkraftstoff betriebenen Brennkraftmaschinen von Vorteil, wobei dann weder für den ersten Kraftstoffzuführungspfad noch für den zweiten Kraftstoffzuführungspfad eine Heizeinrichtung erforderlich ist.Of the second aspect of the present invention is particularly in Advantage of diesel-powered internal combustion engines where then neither for the first fuel supply path yet for the second fuel supply path a heater is required.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:preferred Further developments of the invention will become apparent from the dependent claims and the following description. Embodiments of the invention without being limited to this to be closer to the drawing explained. Showing:

1: ein stark vereinfachtes Blockschaltbild einer erfindungsgemäßen Brennkraftmaschine nach einem ersten Ausführungsbeispiel der Erfindung; und 1 : is a simplified block diagram of an internal combustion engine according to the invention according to a first embodiment of the invention; and

2: ein stark vereinfachtes Blockschaltbild einer erfindungsgemäßen Brennkraftmaschine nach einem zweiten Ausführungsbeispiel der Erfindung. 2 : is a simplified block diagram of an internal combustion engine according to the invention according to a second embodiment of the invention.

Die hier vorliegende Erfindung betrifft eine Brennkraftmaschine mit einem Common-Rail-Einspritzsystem zum Einspritzen von Kraftstoff in Brennkammern der Brennkraftmaschine.The The present invention relates to an internal combustion engine with a common rail injection system for injecting fuel in combustion chambers of the internal combustion engine.

Bei dem in 1 gezeigten, ersten Ausführungsbeispiel der hier vorliegenden Erfindung umfasst das Common-Rail-Einspritzsystem der erfindungsgemäßen Brennkraftmaschine ein Rail 10, wobei dem Rail 10 in einem Kraftstofftank 11 bereitgehaltener Kraftstoff über einen ersten Kraftstoffzuführungspfad 12 zugeführt werden kann, nämlich über eine in den ersten Kraftstoffzuführungspfad 12 integrierte Niederdruckpumpe 13 sowie Hochdruckpumpe 14.At the in 1 shown, the first embodiment of the present invention, the common rail injection system of the internal combustion engine according to the invention comprises a rail 10 , where the rail 10 in a fuel tank 11 held fuel via a first fuel supply path 12 can be supplied, namely via a in the first fuel supply path 12 integrated low-pressure pump 13 as well as high pressure pump 14 ,

Gemäß 1 umfasst die Brennkraftmaschine eine Einrichtung 15 zur Erhöhung des im Rail 10 herrschenden Drucks in einer vorgegebenen Betriebsart der Brennkraftmaschine, insbesondere vor dem Starten derselben, wobei die Einrichtung 15 in einen zweiten, ebenfalls zum Rail 10 führenden Kraftstoffzuführungspfad 16 integriert ist. Gemäß 1 verläuft der zweite Kraftstoffzuführungspfad 16 zwischen dem Rail 10 und einem Zusatzkraftstofftank 17.According to 1 the internal combustion engine comprises a device 15 to increase the in the rail 10 prevailing pressure in a given operating mode of the internal combustion engine, in particular before starting the same, wherein the device 15 in a second, also to the rail 10 leading fuel supply path 16 is integrated. According to 1 runs the second fuel supply path 16 between the rail 10 and an additional fuel tank 17 ,

Das in 1 visualisierte Konzept einer erfindungsgemäßen Brennkraftmaschine ist insbesondere dann von Vorteil, wenn die Brennkraftmaschine mit Schweröl betrieben wird. Im Kraftstofftank 11, der auch als Primärkraftstofftank bezeichnet werden kann, wird dann das Kraftstoff Schweröl bereitgehalten. Im Zusatzkraftstofftank 17 hingegen, der auch als Sekundärkraftstofftank bezeichnet werden kann, wird in diesem Fall als Kraftstoff vorzugsweise Diesel bereitgehalten, so dass für den zweiten Kraftstoffzuführungspfad 16 keine Heizeinrichtung erforderlich ist.This in 1 visualized concept of an internal combustion engine according to the invention is particularly advantageous when the internal combustion engine is operated with heavy oil. In the fuel tank 11 , which can also be referred to as a primary fuel tank, then the fuel heavy oil is kept ready. In the additional fuel tank 17 on the other hand, which can also be referred to as a secondary fuel tank, diesel is preferably kept as fuel in this case, so that for the second fuel guide path 16 no heater is required.

Ein Konzept einer Brennkraftmaschine nach einem zweiten Ausführungsbeispiel der hier vorliegenden Erfindung zeigt 2, wobei auch gemäß dem Konzept der 2 die Brennkraftmaschine ein Common-Rail-Einspritzsystem umfasst, wobei einem Rail 18 in einem Kraftstofftank 19 bereitgehaltener Kraftstoff wiederum über einen ersten Kraftstoffzuführungspfad 20 zugeführt werden kann, in den eine Niederdruckpumpe 21 sowie eine Hochdruckpumpe 22 geschaltet sind.A concept of an internal combustion engine according to a second embodiment of the present invention shows 2 , also according to the concept of 2 the internal combustion engine comprises a common rail injection system, wherein a rail 18 in a fuel tank 19 held fuel in turn via a first fuel supply path 20 can be fed, in which a low-pressure pump 21 and a high pressure pump 22 are switched.

Die Brennkraftmaschine gemäß 2 verfügt ebenso wie die Brennkraftmaschine der 1 über eine Einrichtung 23 zur Erhöhung des im Rail 18 herrschenden Drucks in einer vorgegebenen Betriebsart der Brennkraftmaschine, wobei die Einrichtung 23 wiederum in einen zweiten Kraftstoffzuführungspfad 24 geschaltet ist. Im Ausführungsbeispiel der 2 zweigt der zweite Kraftstoffzuführungspfad 24 von dem ersten Kraftstoffzuführungspfad 20 zwischen der Niederdruckpumpe 21 und der Hochdruckpumpe 22 ab, die Einrichtung 23 zur Erhöhung des im Rail herrschenden Drucks ist demnach zwischen das Rail 18 und die Niederdruckpumpe 21 geschaltet.The internal combustion engine according to 2 has as well as the internal combustion engine of the 1 about a device 23 to increase the in the rail 18 prevailing pressure in a given operating mode of the internal combustion engine, wherein the device 23 again in a second fuel supply path 24 is switched. In the embodiment of 2 the second fuel supply path branches 24 from the first fuel supply path 20 between the low pressure pump 21 and the high pressure pump 22 off, the decor 23 to increase the pressure prevailing in the rail is therefore between the rail 18 and the low pressure pump 21 connected.

Das Konzept einer Brennkraftmaschine gemäß 2 ist insbesondere dann von Vorteil, wenn die Brennkraftmaschine mit Diesel betrieben wird, wenn also im einzigen Kraftstofftank 19 Dieselkraftstoff bereitgehalten wird. Das Konzept der 2 ist jedoch auch an mit Schweröl betriebenen Brennkraftmaschinen einsetzbar.The concept of an internal combustion engine according to 2 is particularly advantageous if the internal combustion engine is operated with diesel, so if in the single fuel tank 19 Diesel fuel is kept. The concept of 2 However, it can also be used on fuel-fired internal combustion engines.

Bei der Einrichtung zur Erhöhung des im Rail herrschenden Drucks handelt es sich vorzugsweise um eine Servoeinheit, wie sie bereits aus DE 101 55 381 A1 bekannt ist.The device for increasing the pressure prevailing in the rail is preferably a servo unit, as it already is DE 101 55 381 A1 is known.

1010
RailRail
1111
KraftstofftankFuel tank
1212
erster Kraftstoffzuführungspfadfirst Fuel supply path
1313
NiederdruckpumpeLow pressure pump
1414
Hochdruckpumpehigh pressure pump
1515
EinrichtungFacility
1616
zweiter Kraftstoffzuführungspfadsecond Fuel supply path
1717
ZusatzkraftstofftankAuxiliary fuel tank
1818
RailRail
1919
KraftstofftankFuel tank
2020
erster Kraftstoffzuführungspfadfirst Fuel supply path
2121
NiederdruckpumpeLow pressure pump
2222
Hochdruckpumpehigh pressure pump
2323
EinrichtungFacility
2424
zweiter Kraftstoffzuführungspfadsecond Fuel supply path

Claims (3)

Brennkraftmaschine, mit einem Common-Rail-Einspritzsystem zum Einspritzen von Kraftstoff in Brennkammern der Brennkraftmaschine, mit einem ersten Kraftstoffzuführungspfad zur Zuführung von Kraftstoff aus einem Kraftstofftank zu einem Rail, wobei in den ersten Kraftstoffzuführungspfad zwischen Kraftstofftank und Rail eine Niederdruckpumpe und eine Hochdruckpumpe geschaltet ist, und mit einer in einen zweiten, ebenfalls zum Rail führenden Kraftstoffzuführungspfad geschalteten Einrichtung zur Erhöhung eines im Rail herrschenden Drucks in einer vorgegebenen Betriebsart der Brennkraftmaschine, insbesondere vor dem Starten derselben, dadurch gekennzeichnet, dass die Einrichtung (15) zur Erhöhung des im Rail herrschenden Drucks in den zweiten Kraftstoffzuführungspfad (16) zwischen das Rail (10) und einen Zusatzkraftstoffstank (17) geschaltet ist.Internal combustion engine with a common rail injection system for injecting fuel into combustion chambers of the internal combustion engine, with a first fuel supply path for supplying fuel from a fuel tank to a rail, wherein in the first fuel supply path between the fuel tank and rail, a low pressure pump and a high pressure pump is connected, and with a device connected to a second, likewise leading to the rail fuel supply path for increasing a pressure prevailing in the rail in a predetermined operating mode of the internal combustion engine, in particular before starting the same, characterized in that the device ( 15 ) for increasing the pressure prevailing in the rail in the second fuel supply path ( 16 ) between the rail ( 10 ) and an additional fuel tank ( 17 ) is switched. Brennkraftmaschine, mit einem Common-Rail-Einspritzsystem zum Einspritzen von Kraftstoff in Brennkammern der Brennkraftmaschine, mit einem ersten Kraftstoffzuführungspfad zur Zuführung von Kraftstoff aus einem Kraftstofftank zu einem Rail, wobei in den ersten Kraftstoffzuführungspfad zwischen Kraftstofftank und Rail eine Niederdruckpumpe und eine Hochdruckpumpe geschaltet ist, und mit einer in einen zweiten, ebenfalls zum Rail führenden Kraftstoffzuführungspfad geschalteten Einrichtung zur Erhöhung eines im Rail herrschenden Drucks in einer vorgegebenen Betriebsart der Brennkraftmaschine, insbesondere vor dem Starten derselben, dadurch gekennzeichnet, dass die Einrichtung (23) zur Erhöhung des im Rail herrschenden Drucks in den zweiten Kraftstoffzuführungspfad (24) zwischen das Rail (10) und die Niederdruckpumpe (21) geschaltet ist, derart, dass der zweite Kraftstoffzuführungspfad (24) vom ersten Kraftstoffzuführungspfad (20) zwischen der Niederdruckpumpe (21) und der Hochdruckpumpe (22) abzweigt.Internal combustion engine with a common rail injection system for injecting fuel into combustion chambers of the internal combustion engine, with a first fuel supply path for supplying fuel from a fuel tank to a rail, wherein in the first fuel supply path between the fuel tank and rail, a low pressure pump and a high pressure pump is connected, and with a device connected to a second, likewise leading to the rail fuel supply path for increasing a pressure prevailing in the rail in a predetermined operating mode of the internal combustion engine, in particular before starting the same, characterized in that the device ( 23 ) for increasing the pressure prevailing in the rail in the second fuel supply path ( 24 ) between the rail ( 10 ) and the low-pressure pump ( 21 ) such that the second fuel supply path ( 24 ) from the first fuel supply path ( 20 ) between the low-pressure pump ( 21 ) and the high pressure pump ( 22 ) branches off. Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einrichtung zur Erhöhung des im Rail (10; 18) herrschenden Drucks als Servoeinheit ausgebildet ist.Internal combustion engine according to claim 1 or 2, characterized in that the means for increasing the in the rail ( 10 ; 18 ) prevailing pressure is designed as a servo unit.
DE102006040466A 2006-08-29 2006-08-29 Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine Withdrawn DE102006040466A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE102006040466A DE102006040466A1 (en) 2006-08-29 2006-08-29 Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine
FI20075345A FI123868B (en) 2006-08-29 2007-05-14 internal combustion engine
KR1020070051859A KR20080020450A (en) 2006-08-29 2007-05-29 An internal combustion engine
JP2007218060A JP2008057532A (en) 2006-08-29 2007-08-24 Internal combustion engine
CNA2007101483061A CN101135287A (en) 2006-08-29 2007-08-29 internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006040466A DE102006040466A1 (en) 2006-08-29 2006-08-29 Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine

Publications (1)

Publication Number Publication Date
DE102006040466A1 true DE102006040466A1 (en) 2008-03-06

Family

ID=38069512

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102006040466A Withdrawn DE102006040466A1 (en) 2006-08-29 2006-08-29 Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine

Country Status (5)

Country Link
JP (1) JP2008057532A (en)
KR (1) KR20080020450A (en)
CN (1) CN101135287A (en)
DE (1) DE102006040466A1 (en)
FI (1) FI123868B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009108433A3 (en) * 2008-02-28 2009-11-19 General Electric Company High viscosity fuel injection pressure reduction system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120135535A (en) * 2009-06-16 2012-12-14 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 A large turbocharged two-stroke diesel engine running on a fuel mixture of two or more fuel components

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011376A1 (en) * 1980-03-25 1981-10-01 Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim Injection system for dual fuel diesel engine - has main injector with adjustable pressure divider for pilot injection (BR 11.8.81)
DE19753155A1 (en) * 1997-11-29 1999-06-02 Mannesmann Rexroth Ag Fuel supply system for an internal combustion engine and high pressure pump used therein
DE19823335A1 (en) * 1998-05-26 1999-12-02 Elsbett G Fuel injections system for engine with ignition by compression
DE10154455A1 (en) * 2001-11-06 2003-05-15 Dietmar Gentsch Dual fuel system for diesel engine has separate tanks, fuel filters and high-pressure pumps feeding injectors or common rail system
DE10155381A1 (en) * 2001-11-10 2003-05-28 Mtu Friedrichshafen Gmbh Internal combustion engine with common rail injection system, has device for increasing rail pressure in defined mode as servo unit in second fuel feed path parallel to first from fuel tank to rail
DE10351507A1 (en) * 2003-11-05 2005-06-02 Robert Bosch Gmbh Process for operating a fuel system of an internal combustion engine, especially with direct fuel injection, comprises performing conveying strokes using a differential piston of pressure-generating device during start phase of the engine
DE202005017387U1 (en) * 2005-11-04 2006-02-02 Sellentin, Alexander Fuel supply mechanism for e.g. boat`s diesel engine, has fuel injection pump supplying fuel to nozzle, and three tanks provided for diesel fuel, for vegetable oil and fat and for receiving mixture of diesel fuel, oil and fat, respectively

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006077643A (en) * 2004-09-08 2006-03-23 Toyota Motor Corp Fuel injection device for internal combustion engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011376A1 (en) * 1980-03-25 1981-10-01 Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim Injection system for dual fuel diesel engine - has main injector with adjustable pressure divider for pilot injection (BR 11.8.81)
DE19753155A1 (en) * 1997-11-29 1999-06-02 Mannesmann Rexroth Ag Fuel supply system for an internal combustion engine and high pressure pump used therein
DE19823335A1 (en) * 1998-05-26 1999-12-02 Elsbett G Fuel injections system for engine with ignition by compression
DE10154455A1 (en) * 2001-11-06 2003-05-15 Dietmar Gentsch Dual fuel system for diesel engine has separate tanks, fuel filters and high-pressure pumps feeding injectors or common rail system
DE10155381A1 (en) * 2001-11-10 2003-05-28 Mtu Friedrichshafen Gmbh Internal combustion engine with common rail injection system, has device for increasing rail pressure in defined mode as servo unit in second fuel feed path parallel to first from fuel tank to rail
DE10351507A1 (en) * 2003-11-05 2005-06-02 Robert Bosch Gmbh Process for operating a fuel system of an internal combustion engine, especially with direct fuel injection, comprises performing conveying strokes using a differential piston of pressure-generating device during start phase of the engine
DE202005017387U1 (en) * 2005-11-04 2006-02-02 Sellentin, Alexander Fuel supply mechanism for e.g. boat`s diesel engine, has fuel injection pump supplying fuel to nozzle, and three tanks provided for diesel fuel, for vegetable oil and fat and for receiving mixture of diesel fuel, oil and fat, respectively

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009108433A3 (en) * 2008-02-28 2009-11-19 General Electric Company High viscosity fuel injection pressure reduction system and method
US8191534B2 (en) 2008-02-28 2012-06-05 General Electric Company High viscosity fuel injection pressure reduction system and method

Also Published As

Publication number Publication date
FI20075345A0 (en) 2007-05-14
FI20075345L (en) 2008-03-01
FI123868B (en) 2013-11-29
JP2008057532A (en) 2008-03-13
KR20080020450A (en) 2008-03-05
CN101135287A (en) 2008-03-05

Similar Documents

Publication Publication Date Title
DE102013220528B4 (en) Injection valve and method for operating an injection valve
DE4409570A1 (en) Method for removal of water from fuel system of IC engine, especially diesel engine
DE102015208489A1 (en) Water injection device of an internal combustion engine and method for operating such a water injection device
DE102012206979A1 (en) System for injecting fuel e.g. diesel, into combustion chamber of diesel engine, has valve arranged between high pressure injection rail and separating device, and another valve arranged between separating device and fluid pump
DE19954695A1 (en) Fuel injection system
DE102011089254B4 (en) Method and device for controlling the fuel supply of an LPG-powered internal combustion engine
DE102013002758B4 (en) Flushing procedure for use with a fuel injector
DE102009057549A1 (en) Method for cooling or lubricating piston or path in cylinder of internal-combustion engine, involves feeding piston by nozzle device under pressure standing oil
EP1399660A1 (en) Method, computer programme and control or regulating device for operating an internal combustion engine and fuel system for an internal combustion engine
DE102006040466A1 (en) Internal-combustion engine, has servo unit inserted into fuel supply path between rail and additional fuel tank for increasing pressure controlled in rail in given operation before starting engine
DE3243110A1 (en) FUEL SYSTEM FOR COMBUSTION ENGINES
DE102009029573A1 (en) Fuel injection system
DE2952016A1 (en) Diesel engine fuel filter - has feed and injection pump connections and return flow connection, with non-return valve opening towards tank
DE10057683B4 (en) Fuel injection system
WO2002055868A1 (en) Common rail unit
DE19622176C1 (en) Engine fuel-filter-monitoring system
DE102016205145A1 (en) Water injection device of an internal combustion engine of a vehicle
DE20318684U1 (en) Mixer feed for gas powered motor vehicle has pressure sensor adjacent pressure reducer and before injection valve
DE102017116472A1 (en) Water injection device for an internal combustion engine
DE102008038448B4 (en) Apparatus and method for introducing fuel into an exhaust system
DE102017200254A1 (en) Method and apparatus for operating an internal combustion engine with dual fuel metering
DE10241444A1 (en) Internal combustion engine operating method for operating a liquid/gas fuel choice has a fuel container, a fuel blow-in valve, a fuel feeder line, a fuel distribution line and a suction pipe device
DE102015226462A1 (en) Gas supply device, in particular for a vehicle
DE102006047294A1 (en) Fuel supply installation, particularly common-rail fuel supply installation of internal combustion engine, particularly ship diesel internal combustion engine, has low pressure area and pumping unit with high pressure pump
DE102013224414A1 (en) Method for operating a fluid delivery system

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: MAN DIESEL & TURBO SE, 86153 AUGSBURG, DE

R012 Request for examination validly filed

Effective date: 20120905

R016 Response to examination communication
R081 Change of applicant/patentee

Owner name: MAN ENERGY SOLUTIONS SE, DE

Free format text: FORMER OWNER: MAN DIESEL & TURBO SE, 86153 AUGSBURG, DE

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee