EP1106813A3 - Method for the determining of the mass flow of a gas mixture - Google Patents

Method for the determining of the mass flow of a gas mixture Download PDF

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Publication number
EP1106813A3
EP1106813A3 EP00124703A EP00124703A EP1106813A3 EP 1106813 A3 EP1106813 A3 EP 1106813A3 EP 00124703 A EP00124703 A EP 00124703A EP 00124703 A EP00124703 A EP 00124703A EP 1106813 A3 EP1106813 A3 EP 1106813A3
Authority
EP
European Patent Office
Prior art keywords
mass flow
straight lines
specified
family
alternative
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
EP00124703A
Other languages
German (de)
French (fr)
Other versions
EP1106813A2 (en
EP1106813B1 (en
Inventor
Michael Etzel
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1106813A2 publication Critical patent/EP1106813A2/en
Publication of EP1106813A3 publication Critical patent/EP1106813A3/en
Application granted granted Critical
Publication of EP1106813B1 publication Critical patent/EP1106813B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0045—Estimating, calculating or determining the purging rate, amount, flow or concentration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0042—Controlling the combustible mixture as a function of the canister purging, e.g. control of injected fuel to compensate for deviation of air fuel ratio when purging

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Flow Control (AREA)

Abstract

Erfindungsgemäß wird ein im Steuergerät abgespeicherter, bei vollständig geöffnetem Tankentlüftungsventil maximaler Massenstrom abhängig vom momentanen Saugrohrunterdruck vorgegeben. Der momentane Massenstrom wird durch einen Algorithmus im Steuergerät bestimmt, bei dem eine von der Ansteuerzeit des Tankentlüftungsventils abhängige Schar von Geraden mit der Ansteuerfrequenz des Ansteuersignals und mit dem maximalen Massenstrom multipliziert wird. Die Geraden sind durch vom Saugrohrunterdruck abhängige Steigungsfaktoren und durch vom Saugrohrunterdruck abhängige Offsetwerte definiert.According to the invention, a stored in the control unit is complete open tank ventilation valve maximum mass flow depending on current intake manifold vacuum specified. The current one Mass flow is determined by an algorithm in the control unit, at one of the coulters depending on the activation time of the tank ventilation valve of straight lines with the control frequency of the control signal and with the maximum mass flow is multiplied. The straight lines are through from Slope factors dependent on the intake manifold vacuum and by the Suction pipe vacuum dependent offset values defined.

In einer ersten Alternative wird die Schar von Geraden durch eine Geradengleichung, in einer zweiten Alternative wird die Schar von Geraden durch ein Kennfeld vorgegeben.

Figure 00000001
In a first alternative, the family of straight lines is specified by a straight line equation, in a second alternative, the family of straight lines is specified by a map.
Figure 00000001
EP00124703A 1999-12-10 2000-11-11 Method for the determining of the mass flow of a gas mixture Expired - Lifetime EP1106813B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19959660A DE19959660C1 (en) 1999-12-10 1999-12-10 Method for determining the mass flow of a gas mixture
DE19959660 1999-12-10

Publications (3)

Publication Number Publication Date
EP1106813A2 EP1106813A2 (en) 2001-06-13
EP1106813A3 true EP1106813A3 (en) 2003-05-14
EP1106813B1 EP1106813B1 (en) 2004-03-24

Family

ID=7932195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124703A Expired - Lifetime EP1106813B1 (en) 1999-12-10 2000-11-11 Method for the determining of the mass flow of a gas mixture

Country Status (2)

Country Link
EP (1) EP1106813B1 (en)
DE (2) DE19959660C1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331581A1 (en) * 2003-07-11 2005-01-27 Robert Bosch Gmbh Device for determining mass flow via tank venting valve for combustion engine has mass flow normalizing device that receives, sums, normalizes measurement signals, computation and conversion units
DE10335902B4 (en) * 2003-08-06 2015-12-31 Robert Bosch Gmbh Method for tank ventilation in an internal combustion engine
DE102005018272B4 (en) * 2005-04-20 2019-10-31 Robert Bosch Gmbh Method and device for operating an internal combustion engine
DE102017209127A1 (en) * 2017-05-31 2018-12-06 Robert Bosch Gmbh Method for calculating a mass flow from a tank ventilation system into a suction pipe of an internal combustion engine
DE102018112487A1 (en) 2018-05-24 2019-11-28 Volkswagen Aktiengesellschaft Method for operating a drive system of a motor vehicle, drive system and motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5072712A (en) * 1988-04-20 1991-12-17 Robert Bosch Gmbh Method and apparatus for setting a tank venting valve
US5216995A (en) * 1991-05-20 1993-06-08 Honda Giken Kogyo Kabushiki Kaisha Evaporative fuel-purging control system and air-fuel ratio control system associated therewith for internal combustion engines
DE19756919A1 (en) * 1997-04-01 1998-10-08 Bosch Gmbh Robert Control of internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319772A1 (en) * 1993-06-15 1994-12-22 Bosch Gmbh Robert Method and device for controlling a tank ventilation system
JP3154324B2 (en) * 1996-05-15 2001-04-09 トヨタ自動車株式会社 Evaporative fuel treatment system for internal combustion engine
DE19701353C1 (en) * 1997-01-16 1998-03-12 Siemens Ag Motor vehicle IC engine fuel-tank ventilation
DE19740917B4 (en) * 1997-04-01 2008-11-27 Robert Bosch Gmbh Method and device for determining the gas temperature in an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5072712A (en) * 1988-04-20 1991-12-17 Robert Bosch Gmbh Method and apparatus for setting a tank venting valve
US5216995A (en) * 1991-05-20 1993-06-08 Honda Giken Kogyo Kabushiki Kaisha Evaporative fuel-purging control system and air-fuel ratio control system associated therewith for internal combustion engines
DE19756919A1 (en) * 1997-04-01 1998-10-08 Bosch Gmbh Robert Control of internal combustion engine

Also Published As

Publication number Publication date
EP1106813A2 (en) 2001-06-13
DE50005783D1 (en) 2004-04-29
EP1106813B1 (en) 2004-03-24
DE19959660C1 (en) 2001-07-05

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