EP1355059B1 - Kraftstoffpumpe - Google Patents

Kraftstoffpumpe Download PDF

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Publication number
EP1355059B1
EP1355059B1 EP03009049A EP03009049A EP1355059B1 EP 1355059 B1 EP1355059 B1 EP 1355059B1 EP 03009049 A EP03009049 A EP 03009049A EP 03009049 A EP03009049 A EP 03009049A EP 1355059 B1 EP1355059 B1 EP 1355059B1
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EP
European Patent Office
Prior art keywords
fuel
seal member
plunger
pressure
cylinder
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.)
Expired - Fee Related
Application number
EP03009049A
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English (en)
French (fr)
Other versions
EP1355059A3 (de
EP1355059A2 (de
Inventor
Naoki Yamamoto
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of EP1355059A2 publication Critical patent/EP1355059A2/de
Publication of EP1355059A3 publication Critical patent/EP1355059A3/de
Application granted granted Critical
Publication of EP1355059B1 publication Critical patent/EP1355059B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/04—Draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/164—Stoffing boxes

Definitions

  • the present invention relates to a fuel pump according to the preamble part of independent claim 1.
  • the present invention relates to a fuel pump that supplies pressurized fuel to an internal combustion engine and in particular, to a technology of improving a seal performance of the fuel pump with regard to lubricant and fuel therein.
  • a pressure of the fuel supplied from a fuel tank to a fuel injector needs to be pressurized to a sufficiently high pressure (for example, 3 -12 Mpa) by a fuel pump.
  • a mechanical fuel pump connected to a camshaft is used along with the pump.
  • This mechanical fuel pump in general, includes a pump-driving cam mounted to a camshaft for opening and closing an intake valve or an exhaust valve and pressurizes fuel therein by reciprocating a plunger in a cylinder by rotation of the camshaft.
  • a Japanese Unexamined Patent Publication No. 8 - 68370 has disclosed the mechanical fuel pump where a seal member contacts an outer surface of a plunger with a lip portion thereof to prevent lubricant for sliding the plunger from mixing with the fuel.
  • the fuel pump Since the above earlier fuel pump has one single seal member to prevent mixing the lubricant with the fuel, the fuel pump has the following problems when applied to an engine with a high engine output and a large exhaust amount.
  • a plunger-stroke amount needs to increase corresponding to an increase of a fuel-flow amount required for the engine.
  • a distance of a sliding movement of a plunger-outer surface to a seal member becomes longer and therefore, durability of the seal member needs to improve further.
  • a flow of the lubricant and the fuel is mostly prevented by the seal member.
  • a preciously small amount thereof is left as a thin liquid film between the plunger-outer surface and the seal member and when a plunger reciprocates, this preciously small amount thereof passes through the seal member.
  • the plunger-stroke amount increases, a region where the lubricant directly contacts the fuel is enlarged, thereby promoting mixing the lubricant with the fuel.
  • the lubricant mixed with the fuel bums and therefore, an exhaust gas emission deteriorates or the lubricant is diluted by the fuel mixed, thereby worsening a lubrication performance thereof.
  • EP 0 903 490 A1 discloses a fuel injector, wherein a boosting piston reciprocates within a supply body in order to pressurize fuel within a boosting chamber.
  • An O-ring is arranged to seal a clearance between sliding surfaces of the boosting piston and the supply body.
  • a metal split-ring is arranged closer to the boosting chamber so as to seal the clearance due to diametrical compression.
  • WO 01/79698 A1 discloses a high-pressure fuel pump with a rubber seal having an annular lip portion having an upper lip and a lower lip, which contact a peripheral surface of a plunger of the fuel pump. The distance between the upper lip and the lower lip is greater than a stroke of the plunger.
  • Fig. 1 is a schematic structural view of a fuel supply apparatus in an internal combustion engine which a fuel pump is applied to.
  • Fig. 2 is a structural view of a high-pressured-fuel pump of a first embodiment.
  • the fuel supply apparatus comprises a fuel tank 2, a low-pressure-fuel pump unit 3, a high-pressure-fuel pump 4, an injector 5, and an engine control unit (ECU) 6.
  • ECU engine control unit
  • Low-pressure-fuel pump unit 3 and high-pressure fuel pump 4 are connected by a low-pressure-fuel passage 7, and high-pressure-fuel pump 4 and injector 5 are connected through a high-pressure-fuel passage 8.
  • Low-pressure-pump unit 3 is disposed in fuel tank 2, including a feed pump 31, a fuel filter 32, and a low-pressure-pressure regulator 33.
  • Feed pump 31 discharges fuel in fuel tank 2 and fuel filter 32 percolates the fuel discharged from feed pump 31.
  • Low-pressure-pressure regulator 33 bypasses low-pressure-fuel passage 7 and adjusts a pressure of the fuel discharged from feed pump 31 to a certain pressure (low pressure).
  • High-pressure-fuel pump 4 pressurizes the fuel adjusted by low-pressure-fuel pump unit 3 to a sufficiently high pressure for supply to injector 5, including, as shown in Fig. 1 and 2 , a pump body 41, an electromagnetic control valve 42, and a discharge check valve 43.
  • Pump body 41 is mounted to a cylinder head of the engine, including a cylinder 411, a cylindrical plunger 412 slidably inserted into cylinder 411, and a pressure chamber 413 that is defined by an inner wall surface forming an upper closed end of cylinder 411 and a crest surface of plunger 412.
  • Plunger 412 is disposed forming a predetermined insert clearance between an outer surface 412a of plunger 412 and an inner surface 411a of cylinder 411 and a bottom end thereof is connected to a lifter 414.
  • Lifter 414 is regularly forced against a camshaft 9 (for example, an intake valve-driving or an exhaust valve-driving camshaft) having a pump-driving cam 9a by a return spring 415, Rotation of camshaft 9 causes plunger 412 to reciprocate in the Arrow Y - Y' direction of Fig. 2 and to pressurize fuel introduced to pressure chamber 413.
  • camshaft 9 for example, an intake valve-driving or an exhaust valve-driving camshaft
  • Pressure chamber 413 is connected to a fuel supply passage 417 through one connection portion 416 and connected to a fuel discharge passage 419 through the other connection portion 418.
  • Fuel supply passage 417 is connected to low-pressure-fuel passage 7 and fuel discharge passage 419 is connected to high-pressure-fuel passage 8.
  • Connection passage 416 that connects pressure chamber 413 to fuel supply passage 417 is opened and closed by electromagnetic control valve 42.
  • a valve body 422 changes from a valve closed position where valve body 422 is seated by spring force of a return spring 421 to a valve opened position to which valve body 422 is moved against return spring 421 by energizing a solenoid 423 of electromagnetic control valve 42.
  • Connection passage 418 that connects pressure chamber 413 to fuel discharge passage 419 is opened and closed by discharge check valve 43.
  • a valve body 432 changes from a valve closed position where valve body 432 is pushed against connection passage 418 by spring force of return spring 431 of discharge check valve 43 to a valve opened position to which valve body 432 is moved against return spring 431 due to fuel pressure in pressure chamber 413 being higher than fuel pressure in high-pressure-fuel passage 8.
  • two independent seal members are disposed in an open end side of cylinder 411 (opposite side to pressure chamber 413) for sealing a clearance between inner surface 411 a of cylinder 411 and outer surface 412a of plunger 412.
  • a seal member 44 for lubricant first seal member
  • a seal member 45 for fuel second seal member
  • a distance L between seal member 44 for lubricant and seal member 45 for fuel is set longer than a stroke amount (length) of plunger 412 reciprocated by rotation of camshaft 9.
  • a rigid seal material made of abrasion resistance material (for example, fluorine resin) is preferably used as both seal member 44 and seal member 45 and in the embodiment, heat resistance and abrasion resistance Teflon (registered trade mark) is used only for seal member 45 for fuel (Teflon is used as an entire material of seal member 45 or as a partial coating portion such as a sliding portion).
  • Teflon is used only for seal member 45 for fuel is that (1) seal member 45 is under more severe condition due to seal member 45 being exposed directly to high pressure of pressure chamber 413, and (2) a seal material made of Teflon is in general expensive, but a rigid seal material can be used for both seal members 44, 45.
  • a space 46 that is defined by inner surface 411a of cylinder 411, outer surface 412a of plunger 412, seal member 44, and seal member 45 is connected to a return passage 60 that returns extra fuel in the pump to fuel tank 2. Thereby the pressure taking place in space 46 can be escaped.
  • a first fuel reservoir 48 is defined on the side of pressure chamber 413 of seal member 45 by inner surface 411 a of cylinder 411, outer surface 412a of plunger 412, and seal member 45.
  • First fuel reservoir 48 is connected to the return passage 60 through second connection passage 49. This causes the pressure taking place in pressure chamber 413 by reciprocal of plunger 412 to be lowered and not to be conveyed directly to seal member 45, as well as to be returned to fuel tank 2 without the fuel staying In first fuel reservoir 48.
  • a second fuel reservoir 50 that has a wider clearance in the diameter direction between cylinder 411 and plunger 412 than the other insert clearance therebetween is defined on a sliding portion of cylinder 411 and plunger 412, being closer to the side of pressure chamber 413 than first fuel reservoir 48.
  • Second fuel reservoir 50 is connected to fuel supply passage 417 through a third connection passage 51. This causes the pressure taking place in pressure chamber 413 by reciprocal of plunger 412 to be escaped, as well as the fuel to recirculate.
  • Second fuel reservoir 50 is formed by disposing a groove on inner surface 411a of cylinder 411 and/or outer surface 412a of plunger 412.
  • injector 5 is disposed for each cylinder of the engine, is controlled to be opened in response to a pulse signal sent from ECU 6 in a predetermined injection timing and injects fuel-pressure adjusted fuel into a combustion chamber of each cylinder. If the fuel pressure becomes high due to failure of fuel supply apparatus 1, the fuel is returned to fuel tank 2 through a relief passage 10 and a relief valve 11. ECU 6 executes a predetermined calculation processing based upon input signals from various sensors including fuel pressure sensor 12 disposed in high-pressure-fuel passage 8 and executes various controls such as a fuel injection control.
  • the fuel in fuel tank 2 is adjusted to a predetermined low pressure by low-pressure-fuel pump unit 3 and sent out to low-pressure fuel passage 7.
  • electromagnetic valve 42 is controlled to be opened by ECU 6 (power supply to solenoid 423). This causes the fuel sent out to low-pressure fuel passage 7 to be introduced to pressure chamber 413 through fuel supply passage 417. At this moment, the fuel pressure in high-pressure-fuel passage 8 is higher than the fuel pressure introduced to pressure chamber 413 and therefore, discharge check valve 43 is in a closed position.
  • electromagnetic valve 42 is controlled to be closed by ECU 6 (to stop power supply to solenoid 423).
  • An amount of the fuel discharged from high-pressure-fuel pump 4 is adjusted by adjusting valve-closing timing of electromagnetic valve 42.
  • the fuel introduced into pressure chamber 413 is pressurized accompanied by raising plunger 412.
  • discharge check valve 43 is opened to discharge the high-pressure fuel, which then, is sent out to injector 5 through high-pressure-fuel passage 8.
  • Outer surface 412a of plunger 412 slides with the seal members by reciprocating movement of plunger 412.
  • seal performance can improve by using the seal material suitable for each purpose thereof. And also each seal member does not slide being immersed in both lubricant and fuel, thereby making a long life thereof.
  • seal member 45 for fuel that is subjected to a direct influence of the pressure occurring in pressure chamber 413 is made of a rigid seal using an abrasion resistance material, durability of seal member 45 can be maintained. Accordingly, if a stroke amount of plunger 412 becomes longer, a good seal performance can be maintained for a long time.
  • a distance L between seal member 44 and seal member 45 is longer than a stroke amount of plunger 412, causing the region in which the lubricant and the fuel pulled into space 46 mix directly to be minimized.
  • space 46 is connected to the return passage 60 through first connection passage 47 so that the pressure occurring in space 46 escapes to prevent an abnormal pressure from being provided on seal member 44 and seal member 45. Accordingly, durability of seal member 44 and seal member 45 can improve.
  • a fuel pump of the embodiment even when applied to an engine with a high output and a large exhaust capacity, a stable, good seal performance of seal members is maintained for a long period of time and mixing lubricant with fuel is minimized.
  • space 46 is connected to the return passage 60 through first connection passage 47, but, not limited to the return passage, space 46 may be connected to a passage the pressure of which is lower than in space 46.
  • Fig. 4 is a structural view of a high-pressure-fuel pump according to a second embodiment.
  • the second embodiment differs in that first and second connection passages 47, 49 are made convergent and are thereafter connected to the return passage (not shown) from the first embodiment and has the same construction with the first embodiment in the other elements and has the same effects with the first embodiment.
  • Fig. 5 is a structural view of a high-pressure-fuel pump according to a third embodiment.
  • the third embodiment differs in that a seal member having a seal lip structure is used as a seal member 44' for lubricant and there is no first connection passage 47 therein from the first and second embodiments (the same construction in other elements).
  • Seal member 44' for lubricant having the seal lip structure comprises, as shown in Fig. 6 (a) , a seal lip 441 made of rubber and a hold member 442 for holding the seal lip wherein hold member 442 is fixed into inner surface 411 a of cylinder 411 by pressure and the like, or as shown in Fig. 6 (b) , comprises a seal lip 443 with no hold member having a X-type shape lacking one piece thereof wherein seal lip 443 is inserted into a groove 411b formed in an inner surface of cylinder 411. Either type thereof may be used.
  • a surface of the seal lip (441 or 443), at least a portion thereof sliding with outer surface 412a of plunger 412 is preferably coated with heat resistance and abrasion resistance material such as Teflon.
  • Seal lip 441, or 443, as shown in Fig. 6 (a), (b) extends slantingly in the direction of lubricant side (in the direction of pump-driving cam 9a side) and contacts outer surface 412a of plunger 412. Accordingly, the pressure in space 46' defined by inner surface 411 a of cylinder 411, outer surface 412a of plunger 412, seal member 44' having a seal lip structure, and seal member 45 can be easily escaped.
  • seal lip 441 or 443 of seal member 44' is temporarily deformed, thereby escaping the pressure to avoid deformation of seal member 45 for fuel. After the pressure is escaped, seal lip 441 or 443 is returned back to the former shape and continues to maintain a stable, good seal performance.
  • space 46' is closed up tightly (namely where there is no first connection passage 417), but space 46' may be connected to a passage such as the return passage the pressure of which is lower than in space 46' In the same as in the first and second embodiments.
  • a passage such as the return passage the pressure of which is lower than in space 46'

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (4)

  1. Kraftstoffpumpe (4), die Kraftstoff unter Druck setzt und den unter Druck gesetzten Kraftstoff zu einer Brennkraftmaschine zuführt, wobei die Kraftstoffpumpe (4) aufweist:
    einen Zylinder (411);
    eine Druckkammer (413), gebildet in einer Endseite des Zylinders (411);
    einen Kolben (412), gleitbar eingesetzt in den Zylinder (411), wobei der Kolben (412) den Kraftstoff in der Druckkammer (413) durch Hin- und Hergehen des Kolbens (412) unter Druck setzt;
    ein erstes Dichtungsteil (44), das einen Spalt zwischen einer Innenoberfläche (411a) des Zylinders (411) und einer Außenoberfläche (412a) des Kolbens (412) abdichtet;
    ein zweites Dichtungsteil (45), näher zu der Druckkammer (413) als das erste Dichtungsteil (44) angeordnet, wobei das zweite Dichtungsteil (45) den Spalt zwischen der Innenoberfläche (411a) des Zylinders (411) und der Außenoberfläche (412a) des Kolbens (412) abdichtet,
    einen Abstand zwischen dem ersten Dichtungsteil (44) und dem zweiten Dichtungsteil (45), der länger als eine Hubgröße des Kolbens (412) ist,
    dadurch gekennzeichnet, dass
    zumindest ein Gleitabschnitt des zweiten Dichtungsteils (45) mit dem Kolben (412) aus verschleißfestem Material hergestellt ist,
    ein Raum (46) durch die Innenoberfläche (411 a) des Zylinders (411), die Außenoberfläche (412a) des Kolbens (412), das erste Dichtungsteil (44) und das zweite Dichtungsteil (45) und der Raum (46) mit einem Kanal verbunden sind, in dem ein Druck niedriger als ein Druck in dem Raum (46) ist.
  2. Kraftstoffpumpe (4) nach Anspruch 1, dadurch gekennzeichnet, dass der Kanal ein Rückführkanal (60) ist, der einen extra verbleibenden Kraftstoff- Überschuß in einen Kraftstofftank (2) rückführt.
  3. Kraftstoffpumpe (4) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das verschleißfeste Material aus Teflon hergestellt ist.
  4. Kraftstoffpumpe (4) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das erste Dichtungsteil (44)eine Dichtungslippe (441, 443) hat, deren vorderes Ende mit der Außenoberfläche (412a) des Kolbens (412) in Kontakt ist.
EP03009049A 2002-04-19 2003-04-17 Kraftstoffpumpe Expired - Fee Related EP1355059B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002118424A JP4010175B2 (ja) 2002-04-19 2002-04-19 内燃機関の燃料ポンプ
JP2002118424 2002-04-19

Publications (3)

Publication Number Publication Date
EP1355059A2 EP1355059A2 (de) 2003-10-22
EP1355059A3 EP1355059A3 (de) 2005-06-15
EP1355059B1 true EP1355059B1 (de) 2010-02-17

Family

ID=28672696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009049A Expired - Fee Related EP1355059B1 (de) 2002-04-19 2003-04-17 Kraftstoffpumpe

Country Status (3)

Country Link
EP (1) EP1355059B1 (de)
JP (1) JP4010175B2 (de)
DE (1) DE60331275D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220705A1 (de) * 2014-10-13 2016-04-14 Continental Automotive Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine
US20160138586A1 (en) * 2008-08-21 2016-05-19 Cummins Inc. Fuel pump

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JP2005299808A (ja) 2004-04-13 2005-10-27 Nok Corp ポンプ用シール
JP4414966B2 (ja) * 2006-01-16 2010-02-17 Ｎｏｋ株式会社 高圧燃料ポンプおよび高圧燃料ポンプ用シールシステム
JP5020767B2 (ja) * 2007-10-05 2012-09-05 ヤンマー株式会社 サプライポンプ
EP2287462B1 (de) * 2009-07-08 2012-04-18 Delphi Technologies Holding S.à.r.l. Pumpeneinheit
US20110146600A1 (en) * 2009-12-18 2011-06-23 Caterpillar Inc. Method of cooling a high pressure plunger
JP5724303B2 (ja) * 2010-11-05 2015-05-27 いすゞ自動車株式会社 Ｄｍｅサプライポンプのシール構造
US8776764B2 (en) 2011-01-04 2014-07-15 Ford Global Technologies, Llc Fuel system for a multi-fuel engine
JP2012215097A (ja) * 2011-03-31 2012-11-08 Mazda Motor Corp 火花点火式エンジンの高圧燃料ポンプ構造およびエンジンの制御装置
ITMI20110959A1 (it) * 2011-05-27 2012-11-28 Ceme Spa Elettropompa del tipo a cursore oscillante
JP2013050081A (ja) * 2011-08-31 2013-03-14 Denso Corp 高圧ポンプ
WO2015032533A1 (en) * 2013-09-04 2015-03-12 Continental Automotive Gmbh High pressure pump
US9587578B2 (en) 2013-12-06 2017-03-07 Ford Global Technologies, Llc Adaptive learning of duty cycle for a high pressure fuel pump
US9458806B2 (en) 2014-02-25 2016-10-04 Ford Global Technologies, Llc Methods for correcting spill valve timing error of a high pressure pump
US9243598B2 (en) 2014-02-25 2016-01-26 Ford Global Technologies, Llc Methods for determining fuel bulk modulus in a high-pressure pump
US9874185B2 (en) 2014-05-21 2018-01-23 Ford Global Technologies, Llc Direct injection pump control for low fuel pumping volumes
DE102014014344A1 (de) * 2014-09-27 2016-03-31 Man Diesel & Turbo Se Kraftstoffpumpe
DE102014014475A1 (de) * 2014-09-27 2016-03-31 Man Diesel & Turbo Se Kraftstoffpumpe
JP2016142197A (ja) * 2015-02-03 2016-08-08 株式会社デンソー 燃料供給装置
GB2610401B (en) * 2021-09-02 2023-12-06 Delphi Tech Ip Ltd Pump assembly for a fuel pump
FR3128742A1 (fr) * 2021-10-29 2023-05-05 Renault S.A.S Pompe à haute pression pour moteur à combustion interne de véhicule automobile

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US5201174A (en) * 1991-12-02 1993-04-13 Deere & Company Auxiliary hydraulic pump system
WO2001079698A1 (fr) * 2000-04-18 2001-10-25 Toyota Jidosha Kabushiki Kaisha Pompe carburant haute pression

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US5201174A (en) * 1991-12-02 1993-04-13 Deere & Company Auxiliary hydraulic pump system
WO2001079698A1 (fr) * 2000-04-18 2001-10-25 Toyota Jidosha Kabushiki Kaisha Pompe carburant haute pression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160138586A1 (en) * 2008-08-21 2016-05-19 Cummins Inc. Fuel pump
DE102014220705A1 (de) * 2014-10-13 2016-04-14 Continental Automotive Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine
DE102014220705B4 (de) * 2014-10-13 2016-05-04 Continental Automotive Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine

Also Published As

Publication number Publication date
EP1355059A3 (de) 2005-06-15
JP4010175B2 (ja) 2007-11-21
EP1355059A2 (de) 2003-10-22
DE60331275D1 (de) 2010-04-01
JP2003314408A (ja) 2003-11-06

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