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EP3578800A3 - Fuel injection system, fuel pump and plunger - Google Patents

Fuel injection system, fuel pump and plunger Download PDF

Info

Publication number
EP3578800A3
EP3578800A3 EP19177995.8A EP19177995A EP3578800A3 EP 3578800 A3 EP3578800 A3 EP 3578800A3 EP 19177995 A EP19177995 A EP 19177995A EP 3578800 A3 EP3578800 A3 EP 3578800A3
Authority
EP
European Patent Office
Prior art keywords
fuel
fuel pump
injection system
pump
discharge valve
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.)
Pending
Application number
EP19177995.8A
Other languages
German (de)
French (fr)
Other versions
EP3578800A2 (en
Inventor
Ole Ohrt
Thorsten Tuexen
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.)
Caterpillar Motoren GmbH and Co KG
Original Assignee
Caterpillar Motoren GmbH and Co KG
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 Caterpillar Motoren GmbH and Co KG filed Critical Caterpillar Motoren GmbH and Co KG
Publication of EP3578800A2 publication Critical patent/EP3578800A2/en
Publication of EP3578800A3 publication Critical patent/EP3578800A3/en
Pending legal-status Critical Current

Links

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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • 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
    • 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
    • F02M59/22—Varying quantity or timing by adjusting cylinder-head space
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations

Landscapes

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

Abstract

The present invention pertains to a fuel injection system (10) for use in an internal combustion engine comprising an injection nozzle (18) and a fuel pump (14) adapted for pressurizing fuel and for variably adjusting a feed rate of the pressurized fuel to be discharged to the injection nozzle (18) via a discharge valve of the fuel pump (14). The discharge valve is configured to open at a predetermined opening pressure so as to discharge the pressurized fuel from the fuel pump (14). In a non-injection mode of the fuel injection system (10), the fuel pump (14) is configured to pressurize fuel flowing through the fuel pump (14) to a pressure level higher than the opening pressure of the discharge valve.
EP19177995.8A 2018-06-07 2019-06-03 Fuel injection system, fuel pump and plunger Pending EP3578800A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1809372.4A GB2574455B (en) 2018-06-07 2018-06-07 Fuel injection system

Publications (2)

Publication Number Publication Date
EP3578800A2 EP3578800A2 (en) 2019-12-11
EP3578800A3 true EP3578800A3 (en) 2020-02-26

Family

ID=62975663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19177995.8A Pending EP3578800A3 (en) 2018-06-07 2019-06-03 Fuel injection system, fuel pump and plunger

Country Status (2)

Country Link
EP (1) EP3578800A3 (en)
GB (1) GB2574455B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036192A (en) * 1974-02-08 1977-07-19 Diesel Kiki Co. Engine fuel injection system
US4163634A (en) * 1977-11-25 1979-08-07 Caterpillar Tractor Co. Fuel pump plunger
WO1999032787A1 (en) * 1997-12-19 1999-07-01 Yanmar Diesel Engine Co., Ltd. Fuel injection pump
US6082335A (en) * 1996-07-26 2000-07-04 Motorenfabrik Hatz Gmbh & Co. Kg. Fuel injection pump for internal combustion engines, in particular one-cylinder diesel engines
WO2008065248A1 (en) * 2006-11-27 2008-06-05 Wärtsilä Finland Oy A piston of a fuel injection pump and a fuel injection pump
EP2669504A1 (en) * 2012-05-30 2013-12-04 Caterpillar Motoren GmbH & Co. KG Plunger for an internal combustion engine fuel pump
JP2016169690A (en) * 2015-03-13 2016-09-23 ヤンマー株式会社 Fuel injection pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344722A1 (en) * 1976-03-15 1977-10-14 Semt PRESSURE WAVE DAMPING DEVICE IN A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE
EP2339166A1 (en) * 2009-12-23 2011-06-29 Caterpillar Motoren GmbH & Co. KG Purging method and system with scraper or wiper ring for preventing formation of deposits inside fuel pump
WO2013182213A1 (en) * 2012-06-05 2013-12-12 Caterpillar Motoren Gmbh & Co. Kg Fuel guiding component

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036192A (en) * 1974-02-08 1977-07-19 Diesel Kiki Co. Engine fuel injection system
US4163634A (en) * 1977-11-25 1979-08-07 Caterpillar Tractor Co. Fuel pump plunger
US6082335A (en) * 1996-07-26 2000-07-04 Motorenfabrik Hatz Gmbh & Co. Kg. Fuel injection pump for internal combustion engines, in particular one-cylinder diesel engines
WO1999032787A1 (en) * 1997-12-19 1999-07-01 Yanmar Diesel Engine Co., Ltd. Fuel injection pump
WO2008065248A1 (en) * 2006-11-27 2008-06-05 Wärtsilä Finland Oy A piston of a fuel injection pump and a fuel injection pump
EP2669504A1 (en) * 2012-05-30 2013-12-04 Caterpillar Motoren GmbH & Co. KG Plunger for an internal combustion engine fuel pump
JP2016169690A (en) * 2015-03-13 2016-09-23 ヤンマー株式会社 Fuel injection pump

Also Published As

Publication number Publication date
GB2574455B (en) 2021-08-04
GB201809372D0 (en) 2018-07-25
GB2574455A (en) 2019-12-11
EP3578800A2 (en) 2019-12-11

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