EP2602471A2 - Moteur à combustion interne avec un système d'alimentation en carburant - Google Patents

Moteur à combustion interne avec un système d'alimentation en carburant Download PDF

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Publication number
EP2602471A2
EP2602471A2 EP12008129.4A EP12008129A EP2602471A2 EP 2602471 A2 EP2602471 A2 EP 2602471A2 EP 12008129 A EP12008129 A EP 12008129A EP 2602471 A2 EP2602471 A2 EP 2602471A2
Authority
EP
European Patent Office
Prior art keywords
pressure
internal combustion
combustion engine
fuel
damping
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
EP12008129.4A
Other languages
German (de)
English (en)
Other versions
EP2602471A3 (fr
EP2602471B1 (fr
Inventor
Wolfgang Layher
Christopher Tost
Martin Rieber
Arno Kinnen
Michael Dietenberger
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 EP2602471A2 publication Critical patent/EP2602471A2/fr
Publication of EP2602471A3 publication Critical patent/EP2602471A3/fr
Application granted granted Critical
Publication of EP2602471B1 publication Critical patent/EP2602471B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • 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
    • F02M37/00—Apparatus 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • 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
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F02M1/16—Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
    • 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
    • F02M37/00—Apparatus 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/007—Layout 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
    • 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
    • F02M37/00—Apparatus 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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/16—Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps

Definitions

  • the damping diaphragm of the pressure damper is loaded by a spring in the direction of the damping chamber.
  • the spring defines the working area of the pressure damper.
  • the bias of the spring is particularly adjustable so that manufacturing tolerances can be easily compensated and an accurate adjustment of the pressure range in which the membrane works, is possible.
  • the spring also helps to accelerate the fuel column in the connection channel.
  • the crankcase interior 31 is in the range of in Fig. 2 shown bottom dead center of the piston 21 via one or more transfer ports 19 connected to the combustion chamber 22.
  • the overflow channels 19 open with overflow windows 20 into the combustion chamber 22.
  • an overflow channel 19 can be divided into a plurality of branches, which open into the combustion chamber 22 with separate overflow windows 20, as in FIG Fig. 2 is shown. From the combustion chamber 22 performs an outlet 18, which is also slit-controlled by the piston 21 and at the in Fig. 2 shown position of the piston 21 is open at bottom dead center.
  • the reference pressure may also be another pressure, for example the pressure in the clean room of an air filter of the internal combustion engine 12.
  • the pressure regulator 35 and the pressure damper 36 operate with the same reference pressure, a vote of pressure regulator 35 and pressure damper 36 is given in a simple manner. Even with very low fuel pressures at which the spring 55 is designed very weak in the pressure damper 36, it can be ensured that the damping diaphragm 54 operates in operation in its central position and can dampen the resulting pressure fluctuations well.
  • connection opening 88 can also be arranged in a negative pressure region of the fan wheel housing 81.
  • the reference pressure of in Fig. 10 Pressure regulator 35, not shown, is the ambient pressure as shown in the first embodiment, so that the reference pressures of pressure regulator 35 and pressure damper 36 are different.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
EP12008129.4A 2011-12-07 2012-12-05 Moteur à combustion interne avec un système d' alimentation en carburant Active EP2602471B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011120468A DE102011120468A1 (de) 2011-12-07 2011-12-07 Verbrennungsmotor mit Kraftstoffzuführeinrichtung

Publications (3)

Publication Number Publication Date
EP2602471A2 true EP2602471A2 (fr) 2013-06-12
EP2602471A3 EP2602471A3 (fr) 2014-12-17
EP2602471B1 EP2602471B1 (fr) 2017-03-08

Family

ID=47520658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12008129.4A Active EP2602471B1 (fr) 2011-12-07 2012-12-05 Moteur à combustion interne avec un système d' alimentation en carburant

Country Status (5)

Country Link
US (1) US20130146028A1 (fr)
EP (1) EP2602471B1 (fr)
JP (1) JP2013119861A (fr)
CN (1) CN103174571A (fr)
DE (1) DE102011120468A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884781A (zh) * 2015-12-15 2017-06-23 安德烈·斯蒂尔股份两合公司 待手动操纵的输送泵以及带有输送泵的燃料系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007617B4 (de) * 2012-04-18 2014-11-13 Andreas Stihl Ag & Co. Kg Arbeitsgerät mit einer Kraftstoffpumpe
JP6730867B2 (ja) * 2016-07-14 2020-07-29 株式会社やまびこ 内燃エンジンによって駆動される刈払機
WO2021176813A1 (fr) * 2020-03-02 2021-09-10 株式会社やまびこ Moteur à combustion interne à deux temps et engin de chantier à moteur
JP2023137435A (ja) * 2022-03-18 2023-09-29 株式会社丸山製作所 ２サイクルエンジン

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4223756A1 (de) 1992-07-18 1994-01-20 Stihl Maschf Andreas Kraftstoffpumpe für einen Zweitaktmotor

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DE4223757C2 (de) * 1992-07-18 1995-03-09 Stihl Maschf Andreas Kraftstoffeinspritzvorrichtung für einen Verbrennungsmotor
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DE4223756A1 (de) 1992-07-18 1994-01-20 Stihl Maschf Andreas Kraftstoffpumpe für einen Zweitaktmotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884781A (zh) * 2015-12-15 2017-06-23 安德烈·斯蒂尔股份两合公司 待手动操纵的输送泵以及带有输送泵的燃料系统
CN106884781B (zh) * 2015-12-15 2020-11-03 安德烈·斯蒂尔股份两合公司 待手动操纵的输送泵以及带有输送泵的燃料系统

Also Published As

Publication number Publication date
EP2602471A3 (fr) 2014-12-17
EP2602471B1 (fr) 2017-03-08
JP2013119861A (ja) 2013-06-17
DE102011120468A1 (de) 2013-06-13
CN103174571A (zh) 2013-06-26
US20130146028A1 (en) 2013-06-13

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