EP2602470A3 - Internal combustion engine with a fuel system - Google Patents

Internal combustion engine with a fuel system Download PDF

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Publication number
EP2602470A3
EP2602470A3 EP12008126.0A EP12008126A EP2602470A3 EP 2602470 A3 EP2602470 A3 EP 2602470A3 EP 12008126 A EP12008126 A EP 12008126A EP 2602470 A3 EP2602470 A3 EP 2602470A3
Authority
EP
European Patent Office
Prior art keywords
fuel
valve
fuel system
combustion engine
internal combustion
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
Application number
EP12008126.0A
Other languages
German (de)
French (fr)
Other versions
EP2602470B1 (en
EP2602470A2 (en
Inventor
Gerhard Osburg
Clemens Klatt
Tobias Leopold
Michael Dietenberger
Wolfgang Layher
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.)
Andreas Stihl AG and Co KG
Original Assignee
Andreas Stihl AG 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 Andreas Stihl AG and Co KG filed Critical Andreas Stihl AG and Co KG
Publication of EP2602470A2 publication Critical patent/EP2602470A2/en
Publication of EP2602470A3 publication Critical patent/EP2602470A3/en
Application granted granted Critical
Publication of EP2602470B1 publication Critical patent/EP2602470B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B15/00Engines characterised by the method of introducing liquid fuel into cylinders and not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M1/00Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F02M1/16Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023Valves in the fuel supply and return system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023Valves in the fuel supply and return system
    • F02M37/0029Pressure regulator in the low pressure fuel system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047Layout or arrangement of systems for feeding fuel
    • F02M37/007Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/16Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/18Feeding by means of driven pumps characterised by provision of main and auxiliary pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/20Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/10Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel peculiar to scavenged two-stroke engines, e.g. injecting into crankcase-pump chamber

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

Ein Verbrennungsmotor (12) besitzt ein Kraftstoffsystem, das ein Kraftstoffventil (26) umfasst. Das Kraftstoffventil (26) besitzt ein Gehäuse (67), in dem ein Kraftstoffraum (62) ausgebildet ist. Das Kraftstoffsystem besitzt eine Kraftstoffpumpe (34), die Kraftstoff aus einem Kraftstofftank (32) in den Kraftstoffraum (62) fördert. Das Kraftstoffsystem besitzt außerdem eine Förderpumpe (59, 69, 79, 89) zum zwangsweisen Fördern von Kraftstoff in das Kraftstoffsystem. Ein zuverlässiges Spülen des Kraftstoffsystems und eine gute Kühlung des Kraftstoffventils (26) können erreicht werden, wenn sich die Förderpumpe (59, 69, 79, 89) in einer Zuleitung (50, 72) zum Kraftstoffraum (62) des Kraftstoffventils (26) befindet und Kraftstoff in den Kraftstoffraum (62) fördert, und wenn der Kraftstoffraum (62) mit einer Entlastungsleitung (58) verbunden ist, in der ein erstes Ventil (60, 73) angeordnet ist.

Figure imgaf001
An internal combustion engine (12) has a fuel system that includes a fuel valve (26). The fuel valve (26) has a housing (67) in which a fuel chamber (62) is formed. The fuel system has a fuel pump (34) that delivers fuel from a fuel tank (32) into the fuel chamber (62). The fuel system also has a delivery pump (59, 69, 79, 89) for forcing fuel into the fuel system. A reliable purging of the fuel system and good cooling of the fuel valve (26) can be achieved when the feed pump (59, 69, 79, 89) in a supply line (50, 72) to the fuel chamber (62) of the fuel valve (26) and conveying fuel into the fuel space (62), and when the fuel space (62) is connected to a relief line (58) in which a first valve (60, 73) is disposed.
Figure imgaf001

EP12008126.0A 2011-12-07 2012-12-05 Internal combustion engine with a fuel system Active EP2602470B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011120465A DE102011120465A1 (en) 2011-12-07 2011-12-07 Internal combustion engine with a fuel system

Publications (3)

Publication Number Publication Date
EP2602470A2 EP2602470A2 (en) 2013-06-12
EP2602470A3 true EP2602470A3 (en) 2014-12-10
EP2602470B1 EP2602470B1 (en) 2016-06-29

Family

ID=47520657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12008126.0A Active EP2602470B1 (en) 2011-12-07 2012-12-05 Internal combustion engine with a fuel system

Country Status (4)

Country Link
US (1) US9534528B2 (en)
EP (1) EP2602470B1 (en)
CN (1) CN103174566B (en)
DE (1) DE102011120465A1 (en)

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US9556837B2 (en) 2014-05-13 2017-01-31 Robert Bosch Gmbh Spring loaded component mounting within fuel tank
DE102015006303A1 (en) * 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Cooling system with a coolant pump for an internal combustion engine
DE102015016485A1 (en) 2015-12-15 2017-06-22 Andreas Stihl Ag & Co. Kg Hand-held implement with a control device
DE102015016484A1 (en) * 2015-12-15 2017-06-22 Andreas Stihl Ag & Co. Kg Manually operated feed pump and fuel system with a feed pump
US10800065B2 (en) * 2015-12-15 2020-10-13 Andreas Stihl Ag & Co. Kg Hand-guided power tool with a control device
DE102018004881A1 (en) * 2018-06-19 2019-12-19 Andreas Stihl Ag & Co. Kg Carburetor and hand-held implement with an internal combustion engine with a carburetor
DE102020000989A1 (en) 2020-02-15 2021-08-19 Andreas Stihl Ag & Co. Kg Two-stroke engine and method of operating a two-stroke engine
DE112021005043T5 (en) 2020-10-26 2023-09-14 Husqvarna Ab Fuel supply assembly, two-stroke engine and power tool
CN113565659A (en) * 2021-07-20 2021-10-29 河北华北柴油机有限责任公司 Reliability assessment method for manual fuel pump

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DE19732741A1 (en) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Starting procedure for two stroke engine
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664532A (en) * 1996-03-22 1997-09-09 August; Rex David Universal fuel priming system
DE19732741A1 (en) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Starting procedure for two stroke engine
US6701900B1 (en) * 2002-12-31 2004-03-09 Caterpillar Inc. Quick priming fuel system and common passageway housing for same
US20090007892A1 (en) * 2007-07-05 2009-01-08 Caterpillar Inc. Liquid fuel system with anti-drainback valve and engine using same

Also Published As

Publication number Publication date
DE102011120465A1 (en) 2013-06-13
CN103174566A (en) 2013-06-26
CN103174566B (en) 2017-06-13
US9534528B2 (en) 2017-01-03
US20130340722A1 (en) 2013-12-26
EP2602470B1 (en) 2016-06-29
EP2602470A2 (en) 2013-06-12

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