EP2088310A1 - Moteur à combustion interne doté d'un système d'injection Common-Rail - Google Patents

Moteur à combustion interne doté d'un système d'injection Common-Rail Download PDF

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Publication number
EP2088310A1
EP2088310A1 EP09001484A EP09001484A EP2088310A1 EP 2088310 A1 EP2088310 A1 EP 2088310A1 EP 09001484 A EP09001484 A EP 09001484A EP 09001484 A EP09001484 A EP 09001484A EP 2088310 A1 EP2088310 A1 EP 2088310A1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
gas exchange
compression
ignition internal
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Withdrawn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
EP09001484A
Other languages
German (de)
English (en)
Inventor
Eckhard Haas
Karl Lutter
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.)
Deutz AG
Original Assignee
Deutz 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 Deutz AG filed Critical Deutz AG
Publication of EP2088310A1 publication Critical patent/EP2088310A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • F02M59/025—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 a single piston

Definitions

  • the invention relates to a self-igniting internal combustion engine with a crankcase, in which a crankshaft is rotatably mounted on which at least one piston carrying a connecting rod is articulated, wherein the piston is movable in a cylinder head covered by a working space covered cylinder, wherein in the cylinder head with the working space communicating and operated by a gas exchange camshaft gas exchange devices are used and in the working space via an injection valve of a common rail injection fuel is fed, the rail of at least one high-pressure pump, which is driven via a roller tappet of a gas exchange camshaft, filled with fuel becomes.
  • Such an internal combustion engine is from the DE 195 08 445 A1 known.
  • This internal combustion engine has a common rail injection system with which the fuel is injected via injectors into the combustion chambers assigned to the individual cylinders.
  • the fuel is thereby conveyed by preferably two high-pressure pumps in the rail.
  • the high-pressure pumps are inserted into recesses in the crankcase of the internal combustion engine and act on the drive side together with conveyor cams on the gas exchange camshaft of the internal combustion engine. Both the crankcase and the camshaft are designed and manufactured specifically for the use of this injection system.
  • the invention has for its object to provide a self-igniting internal combustion engine to which, starting from a conventional injection system in the form of, for example, a series injection pump or a distributor injection pump, with as few profound changes a common rail injection system can be grown.
  • the high-pressure pump is arranged frontally of the internal combustion engine and that at least the roller tappet is inserted into a housing connected to the crankcase.
  • the housing can be an additional housing connected to the crankcase, but in a further embodiment of the invention it is preferably a gearbox housing already present on the internal combustion engine.
  • This gearbox housing is modified accordingly and provided in particular in the region of the gas exchange camshaft with at least one opening into which at least one high-pressure pump is used with at least the associated roller tappet and connected, in particular screwed.
  • the gearbox housing is arranged depending on the configuration of the internal combustion engine on the belt drive side or flywheel side end face of the internal combustion engine.
  • the internal combustion engine may be air-cooled or liquid-cooled.
  • an intermediate housing is arranged between the high-pressure pump and the gearbox housing.
  • This refinement is based on the consideration of changing the gearbox housing only so far that it in turn can be used universally for as many as possible or even all variants of the internal combustion engine. It can then the opening into which the high-pressure pump engages with at least the roller tappet, are closed by a cover in the construction of a conventional injection system. If, in contrast, a common-rail injection system is installed, an intermediate housing adapted to the high-pressure pump is placed on the gearbox housing.
  • roller tappet of the high-pressure pump is actuated by a preferably more elevations having conveyor cam, which is arranged outside of the crankcase bearing the gas exchange camshaft.
  • the conveyor cam between an outer crankcase bearing and a drive gear of the gas exchange camshaft is arranged or the conveyor cam is arranged on the outside to the drive gear.
  • the conveyor cam is mounted on the gas exchange camshaft, in particular shrunk.
  • the conveyor cam in one piece with the gas exchange camshaft.
  • this requires a more complex transformation of the gas exchange camshaft, as if the conveyor cam is only shrunk as needed.
  • a one-time adaptation of the gas exchange camshaft in the form necessary that a cylindrical section is additionally provided, to which the conveyor cam is required aufschrumpfbar.
  • tip diameter of the conveyor cam can be greater than the diameter of the crankcase bearing the gas exchange camshaft, since the gas exchange camshaft from the front side on which the Fördenocken is inserted into the crankcase.
  • the conveyor cam is made in one piece with the drive gear.
  • the gas exchange camshaft does not need to be changed at all.
  • the one-piece production of the conveyor cam with the drive gear is preferred, it is here also possible in principle, réelleschrumpfen the conveyor cam on a corresponding cylindrical portion of the drive gear, for example.
  • internal combustion engine is an air-cooled, self-igniting internal combustion engine with an integrated cooling air blower, which sucks in cooling air from the environment and promotes a arranged along the located behind the cooling air blower 1 longitudinal side wall of the enginemé Kunststoffleitgephaseuse.
  • Thede povertyleitgephaseuse is designed so that it passes on the subsidized cooling air for cooling the air-cooled cylinder tubes and cylinder heads 2.
  • heat exchanger such as a lubricating oil heat exchanger and a charge air heat exchanger, acted upon by the cooling air blower 1 with cooling air.
  • the cooling-air blower 1 is mounted on the side of the internal combustion engine opposite the external gas exchange lines and is driven via a belt drive 3 by a belt drive wheel 4 mounted on the crankshaft of the internal combustion engine.
  • the belt drive 3 is tensioned by a tensioning device 5, which can simultaneously serve to drive, for example, an auxiliary pump.
  • a generator 6 is mounted, which is driven by a second belt drive 3a.
  • the second belt drive 3a is driven by a further belt drive wheel, which is also mounted on the crankshaft in front of or behind the first belt drive wheel 4.
  • the internal combustion engine has an injection system, which in the original embodiment has a series injection pump, which is arranged in the region below the cooling air blower 1 and behind the tensioning device 5.
  • This original in-line injection pump is driven by its own gear drive, which is arranged in a gear box housing 7.
  • a second gear drive is arranged in the gear box housing 7, which, starting from a crankshaft gear, drives a drive gear 8 via an intermediate gear.
  • This drive gear 8 is firmly connected to a gas exchange camshaft 9 and drives it at half the crankshaft speed.
  • the gas exchange camshaft 9 is in the crankcase 10 ( Fig. 2 ) of the internal combustion engine by means of a plurality of crankcase bearings 11 stored. In this case, a belt-drive-side crankcase bearing 11 is arranged directly adjacent to the drive gear 8.
  • the internal combustion engine according to the invention is equipped with a common rail injection system instead of a conventional injection system, which can be attached to the internal combustion engine with as few changes as possible, in particular on complex components such as, for example, the crankcase 10.
  • a high-pressure pump 12 of the common-rail injection system is arranged on the belt-drive-side end face of the internal combustion engine and a pump plunger of the high-pressure pump 12 actuated roller tappet 13 is inserted through a recess in the gearbox housing 7 in this and performed simultaneously.
  • the roller tappet 13 has a roller 14, which rolls on a plurality of elevations 15 having conveyor cam 16.
  • the conveyor cam 16 is arranged frontally in front of the drive gear 8 and either component (integral or fixed) of the gas exchange camshaft 9 or the drive gear 8. If the conveyor cam 16 is made in one piece with the gas exchange camshaft 9, it may be necessary, the cylindrical Aufschrumpf Scheme for the drive gear. 8 run with a relation to the crankcase bearings 11 enlarged diameter, so that the drive gear 8 can be placed from the front over the elevations 15 on the corresponding seat and shrunk.
  • the high-pressure pump 12 is further inserted into an intermediate housing 17, which is fastened above the opening for the roller tappet 13 on the gearbox housing 7.
  • the high pressure pump 12 is connected via a high-pressure line, not shown, with a preferably arranged above the cooling air blower 1 rail 18, which extends along the longitudinal side the internal combustion engine extends.
  • the rail is connected via short injection lines 19 with electrically controllable injectors (injection valves) inserted in the cylinder heads 2.
  • the high-pressure pump 12 is integrated into the internal combustion engine without the outer contour of the internal combustion engine being adversely affected or essential components of the internal combustion engine having to be redesigned.
  • FIGS. 3 and 4 show detailed views of the formation of the gear box housing 7 and the attached high-pressure pump 12.
  • the in the Fig. 3 shown components have been largely described previously. Shown in the Fig. 3 the formation of the gear box housing 7 on the left side to the crankshaft longitudinal axis 20 for driving the original in-line injection pump.
  • the gear case housing 7 in this area an extension 21, which may optionally be separated in the embodiment according to the invention (the then adjusting outer contour in this area is shown by dashed lines).
  • Fig. 4 shows in addition to the previously described that the gearbox housing 7 in the region below the intermediate housing 17 has a slight, outwardly facing bulge 22.
  • the bulge 22 is, like the entire gearbox housing 7, particularly stiff in this area (see also the in Fig. 3 shown stiffening ribs 23 which support this region of the bulge 22 and the overlying flange surface for attachment of the intermediate housing 17).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP09001484A 2008-02-08 2009-02-04 Moteur à combustion interne doté d'un système d'injection Common-Rail Withdrawn EP2088310A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008008259A DE102008008259A1 (de) 2008-02-08 2008-02-08 Brennkraftmaschine mit einem Common-Rail-Einspritzsystem

Publications (1)

Publication Number Publication Date
EP2088310A1 true EP2088310A1 (fr) 2009-08-12

Family

ID=40673474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001484A Withdrawn EP2088310A1 (fr) 2008-02-08 2009-02-04 Moteur à combustion interne doté d'un système d'injection Common-Rail

Country Status (2)

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EP (1) EP2088310A1 (fr)
DE (1) DE102008008259A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3940224A1 (fr) * 2020-07-13 2022-01-19 Powerhouse Engine Solutions Switzerland IP Holding GmbH Système et procédé d'alimentation en huile pour pompe

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012215778A1 (de) 2012-09-06 2014-03-06 Robert Bosch Gmbh Brennkraftmaschine mit einem Kurbelgehäuse
DE102012216594A1 (de) 2012-09-18 2014-03-20 Robert Bosch Gmbh Brennkraftmaschine mit einem Kurbelgehäuse
DE102012218075A1 (de) 2012-10-04 2014-04-10 Robert Bosch Gmbh Hochdruckpumpe, insbesondere Kraftstoffhochdruckpumpe
DE102012218083A1 (de) 2012-10-04 2014-04-10 Robert Bosch Gmbh Gehäuse für eine Hochdruckpumpe
DE102012218086A1 (de) 2012-10-04 2014-04-10 Robert Bosch Gmbh Hochdruckpumpe, insbesondere Kraftstoffhochdruckpumpe, einer Brennkraftmaschine
DE102012218078A1 (de) 2012-10-04 2014-04-10 Robert Bosch Gmbh Hochdruckpumpe, insbesondere Kraftstoffhochdruckpumpe, für eine Brennkraftmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19508445A1 (de) 1995-03-09 1996-09-12 Kloeckner Humboldt Deutz Ag Kraftstoffeinspritzvorrichtung für eine selbstzündende Brennkraftmaschine
US5577892A (en) * 1993-11-26 1996-11-26 Mercedes Benz Ag Method of injecting fuel including delayed magnetic spill valve actuation
EP0915252A2 (fr) * 1997-11-05 1999-05-12 SIG Schweizerische Industrie-Gesellschaft Système d'injection par alimentation commune des injecteurs
WO1999036686A1 (fr) * 1998-01-15 1999-07-22 Stanadyne Automotive Corp. Pompe hydraulique a palier d'entrainement monte sur un moteur
EP1132612A2 (fr) * 2000-01-14 2001-09-12 Mazda Motor Corporation Dispositif d'alimentation en carburant pour moteur à injection directe
EP1298316A2 (fr) * 2001-09-26 2003-04-02 DEUTZ Aktiengesellschaft Système d'injection de carburant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521572A1 (de) * 1995-06-14 1996-12-19 Man Nutzfahrzeuge Ag Befestigung eines Steckpumpengehäuses an einem Kurbelgehäuse eines V-Motors
JP2007016715A (ja) * 2005-07-08 2007-01-25 Mazda Motor Corp エンジンの燃料ポンプ取付構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577892A (en) * 1993-11-26 1996-11-26 Mercedes Benz Ag Method of injecting fuel including delayed magnetic spill valve actuation
DE19508445A1 (de) 1995-03-09 1996-09-12 Kloeckner Humboldt Deutz Ag Kraftstoffeinspritzvorrichtung für eine selbstzündende Brennkraftmaschine
EP0915252A2 (fr) * 1997-11-05 1999-05-12 SIG Schweizerische Industrie-Gesellschaft Système d'injection par alimentation commune des injecteurs
WO1999036686A1 (fr) * 1998-01-15 1999-07-22 Stanadyne Automotive Corp. Pompe hydraulique a palier d'entrainement monte sur un moteur
EP1132612A2 (fr) * 2000-01-14 2001-09-12 Mazda Motor Corporation Dispositif d'alimentation en carburant pour moteur à injection directe
EP1298316A2 (fr) * 2001-09-26 2003-04-02 DEUTZ Aktiengesellschaft Système d'injection de carburant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3940224A1 (fr) * 2020-07-13 2022-01-19 Powerhouse Engine Solutions Switzerland IP Holding GmbH Système et procédé d'alimentation en huile pour pompe
US11698050B2 (en) 2020-07-13 2023-07-11 Powerhouse Engine Solutions Switzerland IP Holding GmbH System and method for oil supply to pump

Also Published As

Publication number Publication date
DE102008008259A1 (de) 2009-08-13

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