ITPN930010A1 - Metodo e dispositivo di controllo di un carburatore per motori a combustione interna - Google Patents

Metodo e dispositivo di controllo di un carburatore per motori a combustione interna

Info

Publication number
ITPN930010A1
ITPN930010A1 IT93PN000010A ITPN930010A ITPN930010A1 IT PN930010 A1 ITPN930010 A1 IT PN930010A1 IT 93PN000010 A IT93PN000010 A IT 93PN000010A IT PN930010 A ITPN930010 A IT PN930010A IT PN930010 A1 ITPN930010 A1 IT PN930010A1
Authority
IT
Italy
Prior art keywords
mixing ratio
control unit
rotation speed
control circuit
variation
Prior art date
Application number
IT93PN000010A
Other languages
English (en)
Inventor
Ulf Svensson
Hans Strom
Original Assignee
Electrolux Ab
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 Electrolux Ab filed Critical Electrolux Ab
Publication of ITPN930010A0 publication Critical patent/ITPN930010A0/it
Publication of ITPN930010A1 publication Critical patent/ITPN930010A1/it
Application granted granted Critical
Publication of IT1268510B1 publication Critical patent/IT1268510B1/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/0015—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using exhaust gas sensors
    • F02D35/0046—Controlling fuel supply
    • F02D35/0053—Controlling fuel supply by means of a carburettor
    • 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/02—Floatless carburettors
    • F02M17/04—Floatless carburettors having fuel inlet valve controlled by diaphragm

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

In un metodo e dispositivo per controllare un carburatore (1) di un motore a combustione interna, il relativo rapporto di miscelazione A/C è automaticamente regolato ad un livello preferito in presenza ed a fronte di varianti condizioni operative. Un mezzo di regolazione (5) viene azionato continuamente da una prima unità di controllo (4) di un primo circuito di controllo (3) così da realizzare un rapporto di miscelazione che si pone in una relazione modificata rispetto alla velocità di rotazione. Un mezzo di regolazione (9) è azionato periodicamente per un breve periodo di tempo da una seconda unità di controllo (7) di un secondo circuito di controllo (6), detta seconda unità di controllo ricevendo informazioni di velocità (8) dal motore (2), in modo da realizzare una variazione di breve durata del rapporto di miscelazione laddove la variazione di velocità di rotazione in tal modo provocata è misurata. In base al risultato ottenuto ed alle informazioni memorizzate, detta seconda unità di controllo (7) esegue una correzione del rapporto di miscelazione regolandolo a gradini di predeterminata entità verso una miscela più povera o più ricca mediante azionamento di un mezzo di regolazione (5). Tale procedura è ripetuta nel secondo circuito di controllo (6) finché la variazione della velocità di rotazione non indica che il rapporto di miscelazione è ad un livello preferito, dopo di che tale regolazione è mantenuta tal quale per un dato periodo di tempo.
IT93PN000010A 1992-02-20 1993-02-18 Metodo e dispositivo di controllo di un carburatore per motori a combustione interna IT1268510B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9200523A SE468998B (sv) 1992-02-20 1992-02-20 Foergasarstyrning

Publications (3)

Publication Number Publication Date
ITPN930010A0 ITPN930010A0 (it) 1993-02-18
ITPN930010A1 true ITPN930010A1 (it) 1994-08-18
IT1268510B1 IT1268510B1 (it) 1997-03-04

Family

ID=20385394

Family Applications (1)

Application Number Title Priority Date Filing Date
IT93PN000010A IT1268510B1 (it) 1992-02-20 1993-02-18 Metodo e dispositivo di controllo di un carburatore per motori a combustione interna

Country Status (5)

Country Link
US (1) US5345912A (it)
JP (1) JP3720379B2 (it)
DE (1) DE4305206C2 (it)
IT (1) IT1268510B1 (it)
SE (1) SE468998B (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9302769D0 (sv) * 1993-08-27 1993-08-27 Electrolux Ab Motorstyrning
DE4328989B4 (de) * 1993-08-28 2007-05-16 Stihl Maschf Andreas Membranvergaser mit einem Hubmagneten zur Öffnung des Einlaßventils
US5611312A (en) * 1995-02-07 1997-03-18 Walbro Corporation Carburetor and method and apparatus for controlling air/fuel ratio of same
US5632248A (en) * 1995-06-06 1997-05-27 Mikuni Corporation Electronically controlled type floatless carburetor
FR2739142B1 (fr) * 1995-09-27 1997-12-05 Siemens Automotive Sa Procede de controle de la richesse d'un melange air / carburant alimentant un moteur a combustion interne et dispositif correspondant
DE19913073C2 (de) * 1999-03-23 2001-04-05 Wacker Werke Kg Kraftstoff-Dosiervorrichtung
DE10161586B4 (de) * 2001-12-14 2004-07-29 Wacker Construction Equipment Ag Kraftstoff-Dosiervorrichtung
DE10335345B4 (de) * 2003-08-01 2013-04-18 Andreas Stihl Ag & Co. Kg Verfahren zum Betrieb einer Vergaseranordnung für einen Verbrennungsmotor und Vergaseranordnung zu dessen Durchführung
DE102005059080A1 (de) * 2005-12-10 2007-06-14 Bing Power Systems Gmbh Vergaser für einen Verbrennungsmotor sowie Verfahren zur gesteuerten Kraftstoffzufuhr
EP2021606B1 (en) * 2006-05-12 2019-06-12 Husqvarna AB Method for adjusting the air-fuel ratio of an internal combustion engine
DE202007009475U1 (de) * 2007-07-05 2008-11-13 Dolmar Gmbh Anordnung aus einem Luftfilter und einem Membranvergaser
DE102008028769A1 (de) 2008-06-17 2009-12-24 Volkswagen Ag Verfahren zur Bestimmung des Kraftstoff-Luft-Verhältnisses einer Verbrennungskraftmaschine
DE102009031693A1 (de) * 2009-07-04 2011-01-05 Andreas Stihl Ag & Co. Kg Verfahren zum Betrieb eines Verbrennungsmotors
JP2011089471A (ja) 2009-10-22 2011-05-06 Mitsubishi Heavy Ind Ltd 気化器の空燃比制御装置
EP2678545B1 (en) * 2011-02-23 2018-04-04 Husqvarna AB Control of a/f ratio at cut-out speed
JP5747416B2 (ja) * 2012-03-29 2015-07-15 飯田電機工業株式会社 手持ち式エンジン作業機の燃料調整方法
WO2014158957A1 (en) * 2013-03-14 2014-10-02 Walbro Engine Management, L.L.C. Electronic controlled fuel enrichment system
WO2014150749A1 (en) 2013-03-15 2014-09-25 Walbro Engine Management, L.L.C. Engine control strategy and feedback system
JP6110189B2 (ja) * 2013-04-05 2017-04-05 株式会社やまびこ 内燃エンジン
US20190017456A1 (en) * 2016-01-19 2019-01-17 Walbro Llc Engine operator initiated self-adjustment system
JP6618393B2 (ja) * 2016-03-15 2019-12-11 本田技研工業株式会社 汎用エンジン用燃料供給装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1501230A (en) * 1974-12-02 1978-02-15 Nissan Motor Air/fuel ratio control system in internal combustion engine
JPS5746031A (en) * 1980-09-01 1982-03-16 Toyota Motor Corp Method of controlling supplied quantity of fuel to internal combustion engine
IT1157490B (it) * 1982-12-20 1987-02-11 Weber Spa Carburatore per motori a combustione interna provvisto di organi ad azione elettronica atti a mantenere costante il minimo regime del motore ed a controllare la posizione della farfalla di avviamento durante la messa in efficienza del motore
US4685434A (en) * 1984-12-12 1987-08-11 Aisan Kogyo Kabushiki Kaisha Electric control apparatus for carburetor
DE3621497A1 (de) * 1986-06-27 1988-01-07 Stihl Maschf Andreas Einrichtung zur veraenderung des luft/kraftstoff-verhaeltnisses

Also Published As

Publication number Publication date
US5345912A (en) 1994-09-13
SE9200523L (sv) 1993-04-26
JPH0610768A (ja) 1994-01-18
JP3720379B2 (ja) 2005-11-24
SE468998B (sv) 1993-04-26
IT1268510B1 (it) 1997-03-04
DE4305206C2 (de) 2003-04-30
ITPN930010A0 (it) 1993-02-18
DE4305206A1 (it) 1993-08-26
SE9200523D0 (sv) 1992-02-20

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970227