EP2679801A3 - Starting safety circuit in a work device with an internal combustion engine - Google Patents

Starting safety circuit in a work device with an internal combustion engine Download PDF

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Publication number
EP2679801A3
EP2679801A3 EP13002890.5A EP13002890A EP2679801A3 EP 2679801 A3 EP2679801 A3 EP 2679801A3 EP 13002890 A EP13002890 A EP 13002890A EP 2679801 A3 EP2679801 A3 EP 2679801A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
fuel
combustion engine
mode selector
safety circuit
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
EP13002890.5A
Other languages
German (de)
French (fr)
Other versions
EP2679801A2 (en
EP2679801B1 (en
Inventor
Carel Dr. Karrar
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 EP2679801A2 publication Critical patent/EP2679801A2/en
Publication of EP2679801A3 publication Critical patent/EP2679801A3/en
Application granted granted Critical
Publication of EP2679801B1 publication Critical patent/EP2679801B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F02M1/02—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling being chokes for enriching fuel-air mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices
    • F02N11/101—Safety devices for preventing engine starter actuation or engagement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P11/00—Safety means for electric spark ignition, not otherwise provided for
    • F02P11/02—Preventing damage to engines or engine-driven gearing
    • F02P11/025—Shortening the ignition when the engine is stopped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/06—Small engines with electronic control, e.g. for hand held tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/20—Control related aspects of engine starting characterised by the control method
    • F02N2300/2011—Control involving a delay; Control involving a waiting period before engine stop or engine start

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Die Erfindung betrifft eine Startsicherheitsschaltung in einem Arbeitsgerät mit einem Verbrennungsmotor (20). Über eine Steuervorrichtung (60) für den Motorbetrieb wird dem Brennraum (25) einerseits Verbrennungsluft und andererseits Kraftstoff zugeführt und das in dem Brennraum (25) vorhandene Kraftstoff/Luft-Gemisch durch eine Zündkerze (26) gezündet. Über einen Betriebsartensteller (31) ist eine Startstellung zur Anreicherung des Kraftstoff/Luft-Gemisches vorgeschlagen, wobei eine Sicherheitsbremseinrichtung (19) in einem Betriebszustand das Arbeitswerkzeug (8) abbremst. An dem Betriebsartensteller (31) ist ein Stellungssensor (43) angeordnet, wobei das Zustandssignal der Sicherheitsbremseinrichtung (19) über einen Betriebssensor (47) und das Zustandssignal des dem Betriebsartensteller (31) zugeordneten Stellungssensors (43) derart verknüpft wird, dass die Steuereinrichtung (60) den Motorbetrieb sperrt, wenn der Betriebsartensteller (31) in Start-stellung (III) und die Sicherheitsbremseinrichtung (19) in ihrem Bereitschaftszustand (B) steht.

Figure imgaf001
The invention relates to a starting safety circuit in a working device with an internal combustion engine (20). By way of a control device (60) for engine operation, combustion air and, on the other hand, fuel are supplied to the combustion chamber (25) and the fuel / air mixture present in the combustion chamber (25) is ignited by a spark plug (26). About a Betriebsartensteller (31) a starting position for enrichment of the fuel / air mixture is proposed, wherein a safety brake device (19) in an operating state, the working tool (8) decelerates. A position sensor (43) is arranged on the mode selector (31), the status signal of the safety brake device (19) being linked by an operating sensor (47) and the status signal of the position sensor (43) assigned to the mode selector (31) such that the control device () 60) blocks the engine operation when the mode selector (31) in start position (III) and the safety brake device (19) is in its standby state (B).
Figure imgaf001
EP13002890.5A 2012-06-28 2013-06-05 Starting safety circuit in a work device with an internal combustion engine Active EP2679801B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012012827.4A DE102012012827A1 (en) 2012-06-28 2012-06-28 Start safety circuit in a working device with an internal combustion engine

Publications (3)

Publication Number Publication Date
EP2679801A2 EP2679801A2 (en) 2014-01-01
EP2679801A3 true EP2679801A3 (en) 2017-01-11
EP2679801B1 EP2679801B1 (en) 2019-10-30

Family

ID=48626243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13002890.5A Active EP2679801B1 (en) 2012-06-28 2013-06-05 Starting safety circuit in a work device with an internal combustion engine

Country Status (5)

Country Link
US (1) US9005083B2 (en)
EP (1) EP2679801B1 (en)
CN (1) CN103527379B (en)
DE (1) DE102012012827A1 (en)
RU (1) RU2629106C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5910858B2 (en) * 2012-01-16 2016-04-27 日立工機株式会社 Chain saw
US8747281B2 (en) * 2012-02-15 2014-06-10 Husqvarna Ab Brake assembly for power-driven hand-held cutting device
DE102012012798B4 (en) 2012-06-28 2014-11-13 Andreas Stihl Ag & Co. Kg Working device with a braking device
DE102012012799A1 (en) 2012-06-28 2014-01-02 Andreas Stihl Ag & Co. Kg Working device with a braking device
DE102012012801A1 (en) 2012-06-28 2014-01-02 Andreas Stihl Ag & Co. Kg implement
EP3354892B2 (en) 2017-01-30 2023-11-22 Andreas Stihl AG & Co. KG Hand-guided working tool with a combustion engine and an electric starting device
SE541417C2 (en) 2017-06-12 2019-09-24 Husqvarna Ab A carburetor assembly start setting detection arrangement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308400A1 (en) * 1982-03-17 1983-09-29 EMAB Electrolux Motor AB, 56124 Huskvarna Starting control device
FR2526126A1 (en) * 1982-05-03 1983-11-04 Stihl Andreas SAFETY DEVICE FOR A MOTOR-GUIDED MOTOR APPARATUS
DE19618640A1 (en) * 1995-05-11 1996-11-14 Stihl Maschf Andreas Power-driven chainsaw with chain brake belt and two-axis lever
DE102008007786A1 (en) * 2008-02-06 2009-08-13 Andreas Stihl Ag & Co. Kg Hand-held implement
WO2010115438A1 (en) * 2009-04-08 2010-10-14 Husqvarna Ab Battery-powered portable tools
DE102009036372A1 (en) * 2009-08-06 2011-02-10 Andreas Stihl Ag & Co. Kg Portable hand-operated tool i.e. engine chain saw, has control unit for limiting speed of combustion engine to speed that is below coupling speed depending on state signal in operating position of starting device

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7526726U (en) 1975-08-23 1975-12-11 Stihl A Maschinenfabrik Device for braking a motor-driven hand saw, in particular a chain saw
US4226312A (en) 1977-06-23 1980-10-07 Zindler Hugh Alan Clutch and brake mechanism
DE3027221A1 (en) 1980-07-18 1982-02-18 Dolmar Maschinen-Fabrik Gmbh & Co, 2000 Hamburg BRAKE DEVICE FOR BRAKING THE SAW CHAIN OF A PORTABLE MOTOR CHAIN SAW
US4717207A (en) * 1985-06-03 1988-01-05 Nissan Motor Co., Ltd. Booster unit for moving a vehicle on a slope and method of controlling the same
US4936429A (en) * 1989-05-11 1990-06-26 Caterpillar Inc. Indexing device for a vehicular steering assembly
DE4125846A1 (en) 1991-08-03 1993-02-04 Fichtel & Sachs Ag Band brake for combustion engine powered chain saw - has band held at uniform spacing around engine pole wheel until applied by slackening of cable
US20020112688A1 (en) * 2001-01-05 2002-08-22 Fariz Joseph P. Neutral safety switch
US6591817B2 (en) * 2001-03-21 2003-07-15 Motorola, Inc. Dual fuel method and system
JP4082578B2 (en) * 2002-10-04 2008-04-30 本田技研工業株式会社 Engine start control device
TWI268309B (en) 2004-03-03 2006-12-11 Honda Motor Co Ltd Device for controlling choke valve of carburetor
DE202004004467U1 (en) 2004-03-22 2004-05-27 JENN FENG INDUSTRIAL CO., LTD., Ping Chang Safety device for electric tool e.g. circular saw or drill, only allows activation of tool when both push-button and braking device are operated
WO2007043916A1 (en) * 2005-10-07 2007-04-19 Husqvarna Ab Carburettor choke mechanism
JP4333690B2 (en) * 2006-05-12 2009-09-16 株式会社デンソー Engine start control system
JP2008303911A (en) * 2007-06-05 2008-12-18 Toyota Motor Corp Speed-change controller and vehicle control device
DE102009011684A1 (en) 2009-03-04 2010-09-09 Andreas Stihl Ag & Co. Kg Hand-held implement
US8876660B2 (en) * 2009-10-09 2014-11-04 Toyota Jidosha Kabushiki Kaisha Vehicle controller system
DE102012012798B4 (en) 2012-06-28 2014-11-13 Andreas Stihl Ag & Co. Kg Working device with a braking device
DE102012012801A1 (en) 2012-06-28 2014-01-02 Andreas Stihl Ag & Co. Kg implement
DE102012012799A1 (en) 2012-06-28 2014-01-02 Andreas Stihl Ag & Co. Kg Working device with a braking device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308400A1 (en) * 1982-03-17 1983-09-29 EMAB Electrolux Motor AB, 56124 Huskvarna Starting control device
FR2526126A1 (en) * 1982-05-03 1983-11-04 Stihl Andreas SAFETY DEVICE FOR A MOTOR-GUIDED MOTOR APPARATUS
DE19618640A1 (en) * 1995-05-11 1996-11-14 Stihl Maschf Andreas Power-driven chainsaw with chain brake belt and two-axis lever
DE102008007786A1 (en) * 2008-02-06 2009-08-13 Andreas Stihl Ag & Co. Kg Hand-held implement
WO2010115438A1 (en) * 2009-04-08 2010-10-14 Husqvarna Ab Battery-powered portable tools
DE102009036372A1 (en) * 2009-08-06 2011-02-10 Andreas Stihl Ag & Co. Kg Portable hand-operated tool i.e. engine chain saw, has control unit for limiting speed of combustion engine to speed that is below coupling speed depending on state signal in operating position of starting device

Also Published As

Publication number Publication date
RU2013127657A (en) 2014-12-27
DE102012012827A1 (en) 2014-01-02
RU2629106C2 (en) 2017-08-24
CN103527379B (en) 2017-06-06
CN103527379A (en) 2014-01-22
US20140005001A1 (en) 2014-01-02
EP2679801A2 (en) 2014-01-01
EP2679801B1 (en) 2019-10-30
US9005083B2 (en) 2015-04-14

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