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 PDFInfo
- 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
Links
- 238000002347 injection Methods 0.000 title claims abstract description 53
- 239000007924 injection Substances 0.000 title claims abstract description 53
- 239000000446 fuel Substances 0.000 claims abstract description 100
- 238000002485 combustion reaction Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 3
- 238000005538 encapsulation Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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)
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)
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)
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)
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)
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 |
-
2004
- 2004-12-03 DE DE102004058350A patent/DE102004058350A1/de not_active Withdrawn
-
2005
- 2005-11-17 DE DE502005000610T patent/DE502005000610D1/de active Active
- 2005-11-17 EP EP05025147A patent/EP1674711B1/fr active Active
- 2005-12-02 US US11/293,531 patent/US7370639B2/en active Active
Patent Citations (5)
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)
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 |
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