EP1674711A1 - Moteur suralimenté à diesel avec un système d'injection Common-Rail - Google Patents

Moteur suralimenté à diesel avec un système d'injection Common-Rail Download PDF

Info

Publication number
EP1674711A1
EP1674711A1 EP05025147A EP05025147A EP1674711A1 EP 1674711 A1 EP1674711 A1 EP 1674711A1 EP 05025147 A EP05025147 A EP 05025147A EP 05025147 A EP05025147 A EP 05025147A EP 1674711 A1 EP1674711 A1 EP 1674711A1
Authority
EP
European Patent Office
Prior art keywords
chamber
fuel
engine according
charge air
diesel 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.)
Granted
Application number
EP05025147A
Other languages
German (de)
English (en)
Other versions
EP1674711B1 (fr
Inventor
Ulrich Jung
Udo Fakler
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 Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP1674711A1 publication Critical patent/EP1674711A1/fr
Application granted granted Critical
Publication of EP1674711B1 publication Critical patent/EP1674711B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators

Definitions

  • the invention relates to a supercharged diesel internal combustion engine with a common rail injection system according to the preamble of claim 1.
  • crankcase vibration technology is extremely unfavorable for the attachment of the high-pressure accumulator, because this leads by the large masses moved in the crankcase to increased vibration load of the high-pressure fuel accumulator and the associated injection lines, which is due to the already high material stress necessarily avoided.
  • known arrangement makes collection, discharge and detection of escaping fuel more difficult, because a number of different regions are formed in which leaked fuel can collect.
  • a fuel injection device is furthermore known in which a high-pressure fuel accumulator supplied by a high-pressure fuel pump is integrated into the wall of a cylinder head cover arranged on an internal combustion engine. From the fuel high pressure accumulator lead injection lines to the arranged in the cylinder head injectors. It should be advantageous that the high-pressure fuel storage is arranged protected against vibration and damage.
  • the described arrangement has the significant disadvantage that in a disassembly of the cylinder head cover, which must be relatively frequently for maintenance purposes, all connections of the high-pressure fuel storage to the injection lines or to the high-pressure fuel pump must be solved.
  • the charge air pipe By arranging the charge air pipe on the cold side of the internal combustion engine to the intake ports of the cylinder head, it is further advantageously possible to make the injection lines very short, whereby high vibration amplitudes are avoided.
  • Next belongs to the charge air duct to the maintenance and repair least affected areas of the engine so that unnecessary disassembly of high-pressure fuel storage and injection lines can be avoided. Thus, assuming a continuous cylinder head, this could be dismantled without first the high-pressure fuel accumulator or the injection lines would have to be dismantled.
  • Next form the charge air duct, high-pressure fuel storage and injection lines a preassembled unit which can minimize the assembly effort in the final assembly of the internal combustion engine advantageous.
  • the second chamber is designed in a simple and thus advantageous manner so that any outflowing fuel collects at all occurring during normal operation of the engine operating positions at a point geodetically lowest lies.
  • a drain opening particularly advantageous at the geodesic lowest point, allows the safe discharge of leaked fuel from the second chamber. This can be of particular importance if, for security reasons -. B. in marine engines - the Berieb the engine despite z. B. a broken injection line must be maintained.
  • a fuel sensor in the second chamber of the charge air tube particularly advantageous at the geodesic lowest point, allows a safe detection of leaked fuel, even at very small amounts and thus creates the prerequisite to be able to perform an alarm when this event occurs.
  • the second chamber of the charge air pipe is advantageously sealed from the environment in the areas and with respect to the passages, which are arranged so that escaping or leaked fuel in the assumed operating positions of the internal combustion engine could escape uncontrollably from the second chamber.
  • the internal combustion engine 1 shown in FIG. 1 with its crankcase 2 and the cylinder head 3 arranged thereon is, in the case of the selected example, an in-line engine with a continuous cylinder head, which direction of view is parallel to the longitudinal axis.
  • the arrangement according to the invention is not limited to this engine type, it could also be a V-engine and instead of the continuous cylinder head shown in the example separate cylinder heads or cylinder heads comprising a plurality of cylinders could also be arranged on the crankcase. According to the illustration according to FIG.
  • a charge air pipe 4 is arranged on the cylinder head 3, next to the cylinder head cover 3a, which comprises a first chamber 5 which carries the charge air and has a second chamber 6, in which a high-pressure fuel accumulator 7 with injection lines 8 connected thereto is arranged.
  • the injection lines 8 connect the high-pressure fuel accumulator 7 with fuel ports 9 on the cylinder head 3, the charge air leading, parallel to the longitudinal axis of the engine 1 extending first chamber 5 is connected via transversely extending intake ports 10 with corresponding intake ports (not shown) in the cylinder head 3.
  • a coolant pipe 11 is arranged, which is connected to coolant channels (not shown) in the cylinder head 3.
  • this has on its side facing away from the cylinder head 3, a cover 12 on.
  • the charge air is supplied to the first chamber 5 by means of a charge air connection 13 shown in FIG. 2, which is connected to a charging device, not shown in the drawings, of the internal combustion engine 1.
  • the charge air pipe 4 shown schematically in FIG. 1 is shown in more detail in FIG. 2, in a plan view perpendicular to its longitudinal axis, looking in the direction of the cover side.
  • the cover 12 is removed in this illustration, the position of the cylinder head 3 and the cylinder head cover 3a arranged thereon is indicated by a dot-dash line.
  • the second chamber 6 of the charge air pipe 4 below the first chamber 5, easily recognizable by the circumferential sealing collar 15, the second chamber 6 of the charge air pipe 4.
  • the lower part of the second chamber 6 is designed so that certain parts of the arranged there high-pressure accumulator 7 protrude beyond the sealing collar 15, So are accessible from the outside with attached lid.
  • the high-pressure fuel accumulator 7 extends through the wall of the second chamber 6, not shown in the drawing seals can be provided.
  • the attachment of the high-pressure fuel accumulator 7 in the lower part of the second chamber 6 via integrally formed on the high-pressure fuel accumulator 7 mounting tabs 16 which are provided with through holes 17 and held by screws 18 in corresponding threaded holes (not shown) of the charge air pipe 4.
  • compression fittings 19 are provided which connect by means of the injection lines 8, 8a arranged on the cylinder head 3 fuel connections. For reasons of clarity, only two of the total of six injection lines are shown in FIG. Accessible are arranged on the cylinder head 3 fuel connections 9 via corresponding openings 20 in the cylinder head 3 facing wall of the second chamber 6 of the charge air pipe 4. The sealing of the openings 20 through the underlying parts of the cylinder head 3 and optionally around the openings 20 extending seals (not shown).
  • the second chamber 6 comprises all the fuel connections 9, such a case is shown on the left in FIG.
  • the outside of the second chamber 6 of the charge air pipe 4 lying on the cylinder head 3 arranged fuel port 9a is connected by means of a double-walled injection line 8a via one of the connection fittings 19 with the high-pressure fuel storage 7.
  • the space formed in the double-walled injection line 8a between the inner actual injection line and the surrounding outer tube opens, as shown in simplified form in Fig. 2, via a port 21 in the second chamber 6 of the charge air pipe 4, so that possibly in this space leaking fuel into the second chamber 6 is derived.
  • Double-walled injection lines and their connections are well known in automotive engineering, so that it can remain in the schematic representation shown in FIG.
  • the high-pressure fuel accumulator 7 is arranged in the second chamber 6 of the charge air pipe 4 that certain parts of the high-pressure fuel accumulator 7 are outside the second chamber 6.
  • this is an overpressure valve 22 shown on the right in FIG. 2 and the associated outlet nozzle 23 and, on the other hand, the high-pressure port 24 of the high-pressure fuel accumulator 7 illustrated on the left in FIG. 2.
  • the outlet port 23 of the overpressure valve 22 is connected via a line connection 25 connected to a collecting container 26 for fuel recirculated from the injection system, the high-pressure port 24 has a connection via a high-pressure fuel line 27 to a high-pressure fuel pump 28 which generates the high-pressure fuel.
  • the high-pressure fuel line 27 is a double-walled line.
  • the gap between the actual high-pressure line and the surrounding outer tube is, as indicated by the arrow designated 29, also connected to the second chamber 6 of the charge air tube 3.
  • a pressure sensor 31 may be arranged thereon, the electrical connections (not shown) of which are guided at a suitable point through the wall of the second chamber 6. Depending on the location, such a cable bushing may need to be sealed.
  • 6 threaded holes 30 are arranged in the second chamber, these correspond with arranged in the cover 12 Through holes (not shown), so that the cover by means of screws (not shown) can be screwed onto the charge air pipe and closes the second chamber 6 along the sealing collar 15, it can be provided between lid 12 and sealing collar 15 is a soft material seal (not shown).
  • FIG. 3 shows the arrangement described in conjunction with FIG. 2 in a side view as viewed from the right, the cover 12 is mounted, the arrangement is shown broken away in the cover area.
  • a drain pipe 32 is arranged on the cover 12. This has a return line 33 to a connection with the collecting container 26, so that, in the event of leakage of fuel from the high pressure system of the injection system, the leaked fuel flows into the collecting container 26.
  • the collecting container 26 is the collecting container, into which the fuel normally returning from the injection system is also introduced, but in deviation from the example shown, it may also be a separate collecting container.
  • the discharge nozzle 32 is arranged at the geodetically lowest point of the second chamber 6, so that no fuel can accumulate in the second chamber 6.
  • the second chamber 6 is of course designed so that the inner contour of its wall steadily falls towards the outlet nozzle.
  • the inner wall of the second chamber 6 is under such circumstances form so that there is a funnel running towards the outlet nozzle.
  • Such conditions are present, for example, when the internal combustion engine in a watercraft or in a vehicle used in extreme terrain, for. B. a snowcat, is installed.
  • a fuel sensor 34 is disposed in the outlet pipe 32 and connected via lines 35 with an evaluation circuit 36, which may be part of an engine control system.
  • the evaluation circuit 36 acts on an alarm device 37, which causes the alarm in the event of leakage of fuel from the high pressure region of the injection system.
  • an emergency shutdown of the internal combustion engine can also be carried out by means of the evaluation circuit 36, if this is permissible.
  • the injection line 8a and the high-pressure fuel line 27 also the possibility not to connect the space between the respective actual high-pressure line and the outer tube with the second chamber 6 of the charge air pipe 4, but with the Return line 33 merge.
  • the fuel sensor should be located downstream of this merge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP05025147A 2004-12-03 2005-11-17 Moteur suralimenté à diesel avec un système d'injection Common-Rail Active EP1674711B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004058350A DE102004058350A1 (de) 2004-12-03 2004-12-03 Aufgeladene Dieselbrennkraftmaschine mit einer Common-Rail-Einspritzanlage

Publications (2)

Publication Number Publication Date
EP1674711A1 true EP1674711A1 (fr) 2006-06-28
EP1674711B1 EP1674711B1 (fr) 2007-04-18

Family

ID=36331462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05025147A Active EP1674711B1 (fr) 2004-12-03 2005-11-17 Moteur suralimenté à diesel avec un système d'injection Common-Rail

Country Status (3)

Country Link
US (1) US7370639B2 (fr)
EP (1) EP1674711B1 (fr)
DE (2) DE102004058350A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBZ20120012A1 (it) * 2012-04-10 2013-10-11 So Co Mar S R L Involucro di protezione antispruzzo per pompe di combustibile.

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014025359A (ja) * 2012-07-24 2014-02-06 Ihi Shibaura Machinery Corp ディーゼルエンジン
SE539811C2 (en) 2014-11-14 2017-12-05 Scania Cv Ab A fuel system for an internal combustion engine
US10650621B1 (en) 2016-09-13 2020-05-12 Iocurrents, Inc. Interfacing with a vehicular controller area network
CN109372670B (zh) * 2018-12-21 2023-09-19 潍柴动力股份有限公司 一种集成式管路与一种发动机
CN114658543B (zh) * 2022-03-29 2023-04-21 无锡威孚高科技集团股份有限公司 一种高压燃油泄漏诊断方法、装置及系统
US11708810B1 (en) * 2022-05-17 2023-07-25 Caterpillar Inc. Fuel system and engine head assembly having double-walled fuel connector for cooling fuel return

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7515413U (de) 1975-05-14 1978-05-11 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Kraftstoffleitungen
EP0690221A1 (fr) 1994-06-27 1996-01-03 Robert Bosch Gmbh Dispositif d'injection de combustible pour moteur à combustion interne
DE19716513C2 (de) 1997-04-19 1999-02-11 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzsystem für einen Verbrennungsmotor mit einer Common-Rail-Schiene

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133287A5 (fr) * 1971-04-15 1972-11-24 Semt
US4702202A (en) * 1986-08-26 1987-10-27 Brunswick Corporation Low profile internally packaged fuel injection system for two cycle engine
DE19533419B4 (de) 1994-11-23 2005-02-24 Deutz Ag Zylinderkopfhaube
US5568798A (en) * 1995-06-08 1996-10-29 Siemens Automotive Corporation Plastic fuel rail having integrated electrical wiring
IT1284334B1 (it) * 1996-01-23 1998-05-18 Fiat Ricerche Struttura di contenimento e di raccolta di combustibile per un impianto di iniezione ad alta pressione di motori a combustione
DE19801171C1 (de) * 1998-01-15 1999-04-15 Daimler Chrysler Ag Kraftstoffeinspritzeinrichtung für eine mehrzylindrige Brennkraftmaschine
GB2337082A (en) * 1998-05-09 1999-11-10 Perkins Engines Co Ltd An i.c engine fuel injection system having a reservoir for actuating fluid
SE9900049D0 (sv) * 1999-01-12 1999-01-12 Volvo Ab Anordning vid förbränningsmotorer
JP2001159381A (ja) * 1999-12-03 2001-06-12 Isuzu Motors Ltd コモンレール式ｖ型ディーゼルエンジン
ITTO20010786A1 (it) * 2001-08-03 2003-02-03 Fiat Ricerche Metodo di autoinnesco della rigenerazione di un filtro particolato per un motore diesel ad iniezione diretta provvisto di un impianto di ini
US6758192B2 (en) * 2002-06-18 2004-07-06 Siemens Vdo Automotive Inc. Vehicle non-metallic intake manifold having an integrated metallic fuel rail
DE10334913B4 (de) * 2002-08-07 2014-03-13 Siemens Vdo Automotive Inc. Ansaugkrümmer mit integrierten Merkmalen
US6840221B1 (en) * 2003-12-23 2005-01-11 International Engine Intellectual Property Company, Llc Runnerless engine intake manifold having integral fuel delivery groove or bore

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7515413U (de) 1975-05-14 1978-05-11 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Kraftstoffleitungen
EP0690221A1 (fr) 1994-06-27 1996-01-03 Robert Bosch Gmbh Dispositif d'injection de combustible pour moteur à combustion interne
US5533485A (en) * 1994-06-27 1996-07-09 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19716513C2 (de) 1997-04-19 1999-02-11 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzsystem für einen Verbrennungsmotor mit einer Common-Rail-Schiene
US6237569B1 (en) * 1997-04-19 2001-05-29 Mtu Motoren-Und Turbinen-Union Friedrichshafen Gmbh Fuel injection system for an internal combustion engine with a common rail

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBZ20120012A1 (it) * 2012-04-10 2013-10-11 So Co Mar S R L Involucro di protezione antispruzzo per pompe di combustibile.

Also Published As

Publication number Publication date
US20060118088A1 (en) 2006-06-08
EP1674711B1 (fr) 2007-04-18
DE102004058350A1 (de) 2006-06-14
DE502005000610D1 (de) 2007-05-31
US7370639B2 (en) 2008-05-13

Similar Documents

Publication Publication Date Title
EP0975869B1 (fr) Systeme d'injection de carburant pour moteur a combustion interne a systeme d'injection par accumulation de pression
EP1674711B1 (fr) Moteur suralimenté à diesel avec un système d'injection Common-Rail
DE69119965T2 (de) Einlassanordnung für V-Brennkraftmaschine
DE102018116664B4 (de) Zylinderkopfdeckelstruktur für einen Motor
AT506473A2 (de) Zylinderkopf einer brennkraftmaschine
DE69712611T2 (de) Verfahren und vorrichtung zur verteilung von dämpfen oder gasen zu jedem zylinder einer mehrzylinderbrennkraftmaschine
EP1206633A1 (fr) Dispositif d'aspiration pour moteur a combustion interne
DE3034971C2 (de) Brennkraftmaschine mit zwei in V-Form angeordneten Zylinderreihen
DE19920195B4 (de) Luftansaugsystem für eine mehrzylindrige Brennkraftmaschine
EP1280985B1 (fr) Circuit de refroidissement pour moteur a combustion interne multicylindre
EP0974748B1 (fr) Moteur à piston alternatif avec recirculation de gaz d'échappement
EP1741914B1 (fr) Couvre culasse
DE19637122C1 (de) Flüssigkeitsgekühlter Zylinderkopf
DE10233406A1 (de) Einlasssystem eines V-Motors
DE102017124765B4 (de) Verbrennungsmotor mit integrierter ölabscheideranordnung zur kurbelgehäuseentlüftung
WO2007014552A2 (fr) Module d'aeration pour moteur a combustion interne
DE102006019880A1 (de) Motorgehäusedeckel eines Verbrennungsmotors mit Entlüftungssystem
WO2006094818A1 (fr) Culasse pour moteur a combustion interne
EP0890726B1 (fr) Culasse à quatre soupapes agencées inclinées
EP1008736A2 (fr) Arrêteur de flammes pour un moteur à gaz
DE102006004205B3 (de) Ein- oder Mehrzylinder-Brennkraftmaschine mit geteiltem Gußgehäuse
DE102017112228A1 (de) Brennkraftmaschine
WO2005057002A2 (fr) Moteur a combustion interne
DE10232910B4 (de) Wassergekühlte mehrzylindrige Brennkraftmaschine
EP0152750B1 (fr) Système d'échappement pour un moteur à combustion interne multi-cylindre

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20060707

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

AKX Designation fees paid

Designated state(s): DE FR GB IT SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 502005000610

Country of ref document: DE

Date of ref document: 20070531

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070711

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080121

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502005000610

Country of ref document: DE

Owner name: MAN TRUCK & BUS AG, DE

Free format text: FORMER OWNER: MAN NUTZFAHRZEUGE AG, 80995 MUENCHEN, DE

Effective date: 20110406

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502005000610

Country of ref document: DE

Owner name: MAN TRUCK & BUS SE, DE

Free format text: FORMER OWNER: MAN TRUCK & BUS AG, 80995 MUENCHEN, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20221123

Year of fee payment: 18

Ref country code: IT

Payment date: 20221122

Year of fee payment: 18

Ref country code: GB

Payment date: 20221122

Year of fee payment: 18

Ref country code: FR

Payment date: 20221122

Year of fee payment: 18

Ref country code: DE

Payment date: 20221128

Year of fee payment: 18

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20231117