EP1350948A1 - Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine - Google Patents

Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine Download PDF

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Publication number
EP1350948A1
EP1350948A1 EP03004639A EP03004639A EP1350948A1 EP 1350948 A1 EP1350948 A1 EP 1350948A1 EP 03004639 A EP03004639 A EP 03004639A EP 03004639 A EP03004639 A EP 03004639A EP 1350948 A1 EP1350948 A1 EP 1350948A1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
control valve
pressure pump
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Withdrawn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
EP03004639A
Other languages
German (de)
English (en)
French (fr)
Inventor
Karl-Friedrich Ruesseler
Ulrich Maier
Achim Koehler
Sascha Ambrock
Peter Bauer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1350948A1 publication Critical patent/EP1350948A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F02M59/08—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 two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder
    • 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
    • F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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

Definitions

  • the invention is based on one Fuel injection device for an internal combustion engine according to the preamble of claim 1.
  • Such a fuel injection device is from the Literature, for example diesel engine management, publisher Vieweg, 2nd edition 1998, pages 280 to 284.
  • This Fuel injector has a high pressure pump through which fuel is delivered to a store. With the memory are on the cylinders of the Internal combustion engine arranged injectors connected. It is a feed pump is provided through which fuel from a Fuel storage tank to the suction side of the high pressure pump is promoted. It is also an electrically operated Control valve provided for setting the by the High-pressure pump fuel quantity pumped into the store.
  • the control valve is a flow control valve formed through which a flow cross section in the Connection of the feed pump to the suction side of the High pressure pump is set.
  • the control valve is there in the connection of the feed pump with the suction side of the High pressure pump arranged and through this the Flow of fuel from the feed pump to the suction side the high pressure pump.
  • the disadvantage here is that the accuracy of the setting by the high pressure pump amount of fuel delivered to the store by the Uniformity of the pressure generated by the feed pump and the exact setting of the flow area is dependent on the control valve.
  • Through the Feed pump caused pressure pulsations and scattering in the setting of the flow cross section lead to Deviations from those pumped by the high pressure pump Fuel quantity. Difficulties also arise when no fuel in the accumulator due to the high pressure pump should be promoted, since this is a complete Shutting off the flow cross section by the control valve is required, for which the control valve is expensive must be trained.
  • additional ones Measures are provided to help with incomplete Shut off by the control valve to the high pressure pump drain flowing fuel so that it does not run through the high pressure pump is pumped.
  • the fuel injection device with the Features according to claim 1 has the advantage that the pumped into the storage by the high pressure pump Fuel quantity through the control valve with high accuracy and can be easily adjusted. It can can be easily achieved that by High pressure pump does not deliver fuel to the accumulator by moving the control valve to its second switching position is brought so that the pumped by the high pressure pump Fuel quantity completely in the low pressure range arrives.
  • Training according to claim 3 allows a simple structure of the Control valve.
  • the training according to claim 6 enables a short connection between the high pressure pump and the Storage with a correspondingly low dead volume.
  • the Training according to claims 7 to 9 allow a Fuel delivery to the memory even if it is defective Control valve if this is not constantly in controlled state. With training according to Claim 10, the requirements for the tightness of the Control valve reduced.
  • FIG. 1 shows a Fuel injection device for an internal combustion engine in a schematic representation according to a first Embodiment
  • Figure 2 the Fuel injector according to a second Embodiment
  • Figure 3 the A fuel injector according to a third Embodiment
  • Figure 4 the A fuel injector according to a fourth Embodiment
  • Figure 5 the Fuel injector according to a fifth Embodiment
  • Figure 6 the A fuel injector according to a sixth Embodiment
  • Figure 7 the Fuel injector according to a seventh Embodiment.
  • FIG. 1 to 7 is one Fuel injection device for an internal combustion engine shown a motor vehicle.
  • the internal combustion engine is preferably a self-igniting internal combustion engine and has several cylinders.
  • the Fuel injection device has a feed pump 10 on through which fuel from a reservoir 12 over a connection 13 to the suction side of a high-pressure pump 14 is promoted.
  • the high pressure pump 14 becomes fuel under high pressure via a connection 15 into a memory 16 promoted.
  • With the storage are over hydraulic lines arranged on the cylinders of the internal combustion engine Injectors 18 connected.
  • a control valve 20 is arranged, by means of which the injector 18 can be opened for a fuel injection or closed to end fuel injection can be.
  • the control valves 20 of the injectors 18 are included connected to an electronic control device 22 and are dependent on the operating parameters of the Internal combustion engine controlled.
  • a Pressure sensor 24 arranged by the pressure in the memory 16 is detected and that with the control device 22nd is connected, which is thus a signal for the in the memory 16 prevailing pressure is supplied.
  • the high-pressure pump 14 has at least one pump element 30 with a tightly guided in a cylinder bore 32 Pump piston 34 on.
  • Two pump elements 30 are provided in the exemplary embodiment, which are diametrical to each other with respect to a common axis 31 are opposite.
  • the pump pistons 34 of the pump elements 30 are by a between the pump elements 30 in Area of the axis 31 arranged common drive 36 in a lifting movement, the drive 36 for example a cam drive or an eccentric drive can be.
  • Each pump piston 34 is in the respective cylinder bore 32 in the drive 36 pioneering area delimits a pump work space 38.
  • In the pump work rooms 38 each open an inlet line 39 with the connection 13 with the feed pump 10 one inlet valve 40 each, which is in the pump work space 38 opens.
  • connection 13 of the feed pump 10 to the suction side the high pressure pump 14 leads upstream in front of the Inlet lines 39 a bypass line 44 with a Throttle point 45 from one to the Fuel reservoir 12 leading return 46 opens.
  • the connection is vented through the bypass line 13 of the feed pump 10 with the high pressure pump 14.
  • a Lubricates 48 leads to drive 36 through which Drive 36 fuel is supplied for lubrication.
  • Drive 36 lead relief connections 49.50 in which each a throttle point can be provided, which in the Return 46 open.
  • a pressure relief valve 51 may be arranged for Return 46 opens.
  • an electrically operated control valve 54 is arranged in the connection 15 of the high pressure pump 14 with the memory 16.
  • the control valve 54 is in that shown in Figure 1 first embodiment designed as a 3/2-way valve and is controlled by the control device 22.
  • the Control valve 54 has an actuator 55 which, for example can be an electromagnet.
  • the control valve 54 has three Connections, with a first connection part 115 of the Connection 15 from the high pressure pump 14 is a second Connection a part 215 of the connection 15 to the memory 16 is and a third port is the return 46.
  • the Control valve 54 is between two switching positions switchable, wherein in a first switching position Control valve 54 through this the parts 115 and 215 of the Connection 15 to the memory 16 are connected to one another, during the part 115 of the connection 15 from the return 46 is separated, and in a second switching position of the Control valve 54 through this part 115 of connection 15 is connected to the return 46 and from part 215 of the Connection 15 is disconnected.
  • the actual pressure in the memory 16 is determined by the pressure sensor 24 is detected and a signal for this is sent to the control device 22 supplied by which the actual pressure with the target pressure is compared and is dependent on a deviation by the control device 22 controls the control valve 54.
  • the set pressure in the tank can depend on Operating parameters of the internal combustion engine, such as for example speed, load and temperature, can be variable. If the actual pressure in the memory 16 is less than that Desired pressure, the control valve 54 through the Control device 22 brought into its first switching position, so that fuel delivered by the high pressure pump 14 in arrives at memory 16. If the actual pressure is higher than that Desired pressure, the control valve 54 through the Control device 22 in its second switching position brought so that the pumped by the high pressure pump 14 Fuel reaches the return 46.
  • the fuel injection device is according to shown a second embodiment in which the Structure is essentially the same as the first Embodiment, but the high pressure pump 114 is modified.
  • the high pressure pump 114 again has for example two diametrically opposite one another Pump elements 130 on.
  • the pump pistons 134 of the Pump elements 130 are replaced by pump elements 130 surrounding common drive 136 in one stroke driven, the drive 136 for example a Can be cam drive or an eccentric drive.
  • each pump piston 134 is in the respective Cylinder bore 132 in their facing area a pump workspace 138 delimits.
  • the pump work rooms 138 of the pump elements 130 are thus facing each other and connected with each other.
  • a common inlet line 139 from the connection 13 with the feed pump 10 forth with an inlet valve 140 which in the pump work rooms 138 opens.
  • a pressure line 143 for connection 15 to the memory 16, with the outlet valve 142 toward the accumulator 16 opens.
  • the pressure line 143 runs in the area of common axis 131 of the pump elements 130. If the If the pump piston 134 moves radially outwards, this will suck it via the opened inlet valve 140 fuel into the Pump work rooms 138 on, while the outlet valve 142nd closed is.
  • the fuel injection device according to FIG a third embodiment shown, in which the Structure is essentially the same as the first Embodiment, but the control valve 254 and its Arrangement is modified.
  • the control valve 254 is a 2/2-way valve trained and this controls a connection 226 the pressure side of the high pressure pump 14 with the return 46.
  • the pressure side of the high pressure pump 14 is on the Connection 15 into which the pressure lines 43 of the two Pump elements 30 open, connected to the memory 16.
  • In the connection 15 is an opening towards the memory 16 Check valve 256 arranged.
  • the control valve 254 is by the control device 22 between two Switchable positions switchable, in a first Switch position through the control valve 254 the connection 226 the pressure side of the high pressure pump 14 to the return 46 is open and in a second switching position by the Control valve 254 the connection 226 the pressure side of the High pressure pump 14 to the return 46 is separated.
  • the Check valve 256 is required to carry in its first switching position control valve 254 when the Connection 226 of the pressure side of the high pressure pump 14 to Return 46 is open, an outflow of fuel to prevent the memory 16.
  • the fuel injection device according to FIG shown a fourth embodiment.
  • the High-pressure pump 314 has only one pump element 330 a pump piston guided in a cylinder bore 332 334 by a drive 336 in one stroke is driven and delimits a pump work space 338.
  • An inlet valve opens into the pump work space 338 340 an inlet line 339 from the feed pump 10.
  • from Pump work space 338 leads through an outlet valve 342 Pressure line 343 for connection 15 to the memory 16.
  • In the connection 15 is an opening towards the memory 16
  • Check valve 356 arranged. From the print side of the High pressure pump 314 drains a connection 326, which in the Inlet line 339 opens and in which a control valve 354 is arranged.
  • the control valve 354 is a 2/2-way valve formed and is between the control device 22 two switch positions switchable. In a first Switch position is the connection through the control valve 354 326 is open so that the high pressure pump 314th delivered fuel back to the suction side is returned, and is in a second switching position by the control valve 354 the connection 326 separated, so that fuel delivered by the high pressure pump 314 in arrives at the memory 16.
  • the control valve 354 is such trained that this is in its uncontrolled state takes open first switch position in which the Connection 326 is open, and this in controlled Assumes its closed second switching position, in which connection 326 is disconnected.
  • the 336 drive may include a lubrication connection 348 from the feed line 339 branch off, also relief lines 349,350 from Drive 336 can discharge into a return 346th lead.
  • a pressure booster 360 arranged by the pressure prevailing in the accumulator 16 is increased so that the fuel injection to the Injectors 18 is carried out at a higher pressure. It can be provided that for each injector 18 a separate Pressure booster 360 is present, which also in Injector 18 can be integrated.
  • the high pressure pump 314 needs compared to the above Embodiments only generate a lower pressure become.
  • the connection 362 opens into the Inlet line 339 between the feed pump 10 and the Suction side of high pressure pump 314.
  • connection 362 a check valve 364 opening towards the inlet line 339 arranged.
  • the Pressure relief valve 368 By the Pressure relief valve 368, the pressure on the suction side the high pressure pump 314 limited.
  • Control valve 454 shows the fuel injection device according to FIG a fifth embodiment shown opposite the fourth embodiment only in terms of Control valve 454 is modified.
  • the control valve is 454 trained so that this is not controlled Assumes a closed switch position in which the connection 426 is disconnected, and this in controlled Assumes an open switch position in which the Connection 426 is open. If in the event of a defect Control valve 454 can no longer be controlled, so can nevertheless fuel can be pumped into the memory 16, so that an operation of the internal combustion engine is possible.
  • the fuel injection device according to FIG a sixth embodiment shown in has essentially the same structure as the fourth Embodiment, but in the by the Control valve 554 controlled connection 526
  • Check valve 570 is arranged to the inlet line 539 opens.
  • Check valve 570 may be downstream be arranged after the control valve 554.
  • the control valve 554 is designed such that this is not in controlled state its open switch position in which connection 526 is open, and this its closed switch position when activated in which link 526 is disconnected.
  • the Check valve 570 opening pressure is higher than that Check valve 556 opening pressure to accumulator 16. If, in the event of a defect in the control valve 554, this can no longer be controlled, it is located constantly in its open switch position.
  • the Minimum pressure in the memory 16 is by the Opening pressure of the check valve 570 determined.
  • the fuel injection device is according to shown a seventh embodiment, which in turn essentially the same structure as the fourth Has embodiment, but in the connection 626 a further valve 672 is arranged, which the Link 626 controls.
  • Valve 672 is downstream the control valve 654 arranged in the connection 626 and the valve 672 is replaced by the one prevailing in the memory 16 Pressure controlled.
  • the valve 672 can be used, for example, as a 2/2-way valve be trained or as a stepless valve. If the pressure in the accumulator 16 is high, the valve picks up 672 an open switch position in which the connection 626 is open. If the pressure in the accumulator 16 is low, valve 672 takes a closed switching position in which link 626 is disconnected.
  • the Control valve 654 is designed such that this is not in controlled state its open switch position in which connection 626 is open, and this its closed switch position when activated in which link 626 is disconnected. If that Control valve 654 can be controlled properly, so the pressure in the memory 16 is also in an uncontrolled state State high so valve 672 is open Switch position and the connection 626 continuously is open. In the event of a control valve 654 failure it constantly takes its open switch position, however, the pressure in the accumulator 16 then drops. If the Pressure in the memory 16 has dropped to a minimum pressure, so valve 672 is in its closed switching position brought so that the connection 626 is separated and Fuel is fed into the memory 16. This is enables emergency operation of the internal combustion engine.
  • the Minimum pressure in the memory 16 is determined by the design of the valve 672, which means at which pressure in the Memory 16 the valve 672 is closed.
  • the designs of the fuel injection device according to the exemplary embodiments explained above can be found in can be combined in any way. So at a pressure increasing device in all of the exemplary embodiments be provided as in the fourth embodiment of which led a return to the suction side of the high pressure pump is.
  • the high pressure pump doesn't just need one or two Have pump elements, but can be any number Have pump elements.
  • the Fuel injector according to the above illustrated embodiments are the Pump workrooms of the pump elements during the suction stroke Pump piston always completely filled, even if through the High pressure pump with little or no fuel in the Storage is promoted. The pump elements are thus sufficient even with zero funding or partial funding cooled and no cavitation occurs.
  • the intake valves so in the pump workrooms of the pump elements can be set so that even at a low Open pressure, which meets the requirements of the Uniformity of pressure generation by the feed pump 10 are low and when starting the internal combustion engine faster generation of pressure by the high pressure pump can be done.
  • Through the control valve is simple ensures that no fuel is produced by the high pressure pump is promoted to memory if necessary.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP03004639A 2002-04-05 2003-03-03 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine Withdrawn EP1350948A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215021A DE10215021A1 (de) 2002-04-05 2002-04-05 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10215021 2002-04-05

Publications (1)

Publication Number Publication Date
EP1350948A1 true EP1350948A1 (de) 2003-10-08

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EP03004639A Withdrawn EP1350948A1 (de) 2002-04-05 2003-03-03 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine

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US (1) US6889657B2 (ja)
EP (1) EP1350948A1 (ja)
JP (1) JP2003293903A (ja)
DE (1) DE10215021A1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1429020A1 (en) * 2002-12-09 2004-06-16 Caterpillar Inc. Variable discharge pump
EP1911964A1 (de) * 2006-10-12 2008-04-16 Robert Bosch Gmbh Kraftstoffhochdruckpumpe und Kraftstoffeinspritzsystem für eine Brennkraftmaschine
WO2008066635A1 (en) * 2006-11-27 2008-06-05 Caterpillar Inc. Opposed pumping load high pressure common rail fuel pump
US7470117B2 (en) 2004-11-30 2008-12-30 Caterpillar Inc. Variable discharge fuel pump
US7517200B2 (en) 2004-06-24 2009-04-14 Caterpillar Inc. Variable discharge fuel pump
WO2009073131A2 (en) * 2007-11-30 2009-06-11 Caterpillar Inc. Synchronizing common rail pumping events with engine operation

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DE10315318A1 (de) * 2003-04-04 2004-10-14 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine
DE602004013602D1 (de) * 2004-11-12 2008-06-19 Fiat Ricerche Ein Kraftstoffeinspritzsystem mit Akkumulatorvolumen für eine Brennkraftmaschine
DE102005012940A1 (de) * 2005-03-21 2006-09-28 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
JP4552834B2 (ja) * 2005-11-09 2010-09-29 トヨタ自動車株式会社 燃料噴射装置
US20070272215A1 (en) * 2007-03-09 2007-11-29 Mazrek Ltd. Fuel Injection Sytem for Internal Combustion Engines
DE102007044403B4 (de) * 2007-09-18 2011-04-28 Continental Automotive Gmbh Vorrichtung zum Einbringen einer Reduktionsmittelflüssigkeit in ein Abgas einer Verbrennungsanlage
US7552720B2 (en) * 2007-11-20 2009-06-30 Hitachi, Ltd Fuel pump control for a direct injection internal combustion engine
US7878960B1 (en) * 2009-09-10 2011-02-01 Fen-Ying Liu Waistline slimming exercise machine
EP2703636B1 (en) * 2012-09-04 2017-11-15 Delphi International Operations Luxembourg S.à r.l. Fuel Pump Arrangements
EP2738071B1 (de) * 2012-11-30 2015-08-12 Hübner GmbH & Co. KG Gelenkfahrzeug mit einem Gelenk zwischen den Fahrzeugteilen
GB201302600D0 (en) * 2013-02-14 2013-04-03 Ford Global Tech Llc A method of controlling a fuel supply system
CN108533426A (zh) * 2018-03-29 2018-09-14 中国航发湖南动力机械研究所 发动机燃油供给***及燃油供给控制方法
DE102018216176A1 (de) * 2018-09-21 2020-03-26 Robert Bosch Gmbh Kraftstofffördereinrichtung für eine Brennkraftmaschine

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WO2000049283A2 (en) * 1999-02-17 2000-08-24 Ilija Djordjevic Variable output pump for gasoline direct injection
DE10036772A1 (de) * 2000-07-28 2002-02-14 Bosch Gmbh Robert Verfahren zum Betreiben eines Kraftstoffzumesssystems einer direkteinspritzenden Brennkraftmaschine

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JPH11200990A (ja) * 1998-01-07 1999-07-27 Unisia Jecs Corp 燃料噴射制御装置
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Publication number Priority date Publication date Assignee Title
EP0735268A2 (en) * 1995-03-28 1996-10-02 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni A device for regulating the supply of pressurised fluid to a pressurised fluid accumulator, for example for motor vehicles
DE19731102A1 (de) * 1997-07-19 1999-01-21 Bosch Gmbh Robert System zum Betreiben eines Kraftstoffversorgungssystems für eine Brennkraftmaschine insbesondere eines Kraftfahrzeugs
WO2000049283A2 (en) * 1999-02-17 2000-08-24 Ilija Djordjevic Variable output pump for gasoline direct injection
DE10036772A1 (de) * 2000-07-28 2002-02-14 Bosch Gmbh Robert Verfahren zum Betreiben eines Kraftstoffzumesssystems einer direkteinspritzenden Brennkraftmaschine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1429020A1 (en) * 2002-12-09 2004-06-16 Caterpillar Inc. Variable discharge pump
US7179060B2 (en) 2002-12-09 2007-02-20 Caterpillar Inc Variable discharge pump with two pumping plungers and shared shuttle member
US7517200B2 (en) 2004-06-24 2009-04-14 Caterpillar Inc. Variable discharge fuel pump
US7470117B2 (en) 2004-11-30 2008-12-30 Caterpillar Inc. Variable discharge fuel pump
EP1911964A1 (de) * 2006-10-12 2008-04-16 Robert Bosch Gmbh Kraftstoffhochdruckpumpe und Kraftstoffeinspritzsystem für eine Brennkraftmaschine
WO2008066635A1 (en) * 2006-11-27 2008-06-05 Caterpillar Inc. Opposed pumping load high pressure common rail fuel pump
US7444989B2 (en) 2006-11-27 2008-11-04 Caterpillar Inc. Opposed pumping load high pressure common rail fuel pump
WO2009073131A2 (en) * 2007-11-30 2009-06-11 Caterpillar Inc. Synchronizing common rail pumping events with engine operation
WO2009073131A3 (en) * 2007-11-30 2009-07-23 Caterpillar Inc Synchronizing common rail pumping events with engine operation
US7690353B2 (en) 2007-11-30 2010-04-06 Caterpillar Inc. Synchronizing common rail pumping events with engine operation

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