WO2003018978A3 - Method for measuring the airflow in an internal combustion engine - Google Patents

Method for measuring the airflow in an internal combustion engine Download PDF

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Publication number
WO2003018978A3
WO2003018978A3 PCT/SE2002/001498 SE0201498W WO03018978A3 WO 2003018978 A3 WO2003018978 A3 WO 2003018978A3 SE 0201498 W SE0201498 W SE 0201498W WO 03018978 A3 WO03018978 A3 WO 03018978A3
Authority
WO
WIPO (PCT)
Prior art keywords
airflow
measurement
throttle
internal combustion
pressure
Prior art date
Application number
PCT/SE2002/001498
Other languages
French (fr)
Other versions
WO2003018978A2 (en
Inventor
Goeran Almkvist
Original Assignee
Sem Ab
Goeran Almkvist
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 Sem Ab, Goeran Almkvist filed Critical Sem Ab
Priority to AU2002330347A priority Critical patent/AU2002330347A1/en
Publication of WO2003018978A2 publication Critical patent/WO2003018978A2/en
Publication of WO2003018978A3 publication Critical patent/WO2003018978A3/en

Links

Classifications

    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0402—Engine intake system parameters the parameter being determined by using a model of the engine intake or its components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/14—Timing of measurement, e.g. synchronisation of measurements to the engine cycle

Abstract

The invention refers to a method for determining the airflow to an internal combustion engine such as for example a motorcycle engine. The airflow measurement is made via measurement of the pressure in the inlet manifold (2) with a pressure sensor (1) placed between the throttle (4) and the inlet valve (6). The measurement is made at predetermined crankshaft angles whereby at least one pressure measurement takes place near the piston's ((3) lower turning point. The pressure measurement values can be weighted according to the rotation rate of the engine and different measurements at different angles can be made and used to calculate the amount of air contained in the cylinder, the airflow past the throttle or the degree of opening of the throttle.
PCT/SE2002/001498 2001-08-22 2002-08-22 Method for measuring the airflow in an internal combustion engine WO2003018978A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002330347A AU2002330347A1 (en) 2001-08-22 2002-08-22 Method for measuring the airflow in an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0102795-2 2001-08-22
SE0102795A SE523738C2 (en) 2001-08-22 2001-08-22 A method for measuring the air flow to an internal combustion engine

Publications (2)

Publication Number Publication Date
WO2003018978A2 WO2003018978A2 (en) 2003-03-06
WO2003018978A3 true WO2003018978A3 (en) 2003-11-13

Family

ID=20285092

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/001498 WO2003018978A2 (en) 2001-08-22 2002-08-22 Method for measuring the airflow in an internal combustion engine

Country Status (3)

Country Link
AU (1) AU2002330347A1 (en)
SE (1) SE523738C2 (en)
WO (1) WO2003018978A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE510123T1 (en) * 2007-07-05 2011-06-15 Magneti Marelli Spa METHOD FOR DETECTING AND PROCESSING AN INLET PRESSURE SIGNAL IN AN INTERNAL COMBUSTION ENGINE WITHOUT AN AIR INTAKE MANIFOLD

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549465A (en) * 1976-04-15 1979-08-08 Fiat Spa Process and device for determining the quantity of air inducted by an internal combustion otto cyclo engine with fuel injection
US4967711A (en) * 1988-07-29 1990-11-06 Fuji Jukogyo Kabushiki Kaisha Fuel injection control system for automotive engine
EP0521545A2 (en) * 1991-07-01 1993-01-07 General Motors Corporation Apparatus for diagnosing faults in engine air intake valve
EP0639704A1 (en) * 1993-08-20 1995-02-22 Regie Nationale Des Usines Renault S.A. Method for calculating the mass of air admitted to an internal combustion engine
US5497329A (en) * 1992-09-23 1996-03-05 General Motors Corporation Prediction method for engine mass air flow per cylinder
US6276341B1 (en) * 1999-01-26 2001-08-21 Mitsubishi Denki Kabushiki Kaisha Internal-combustion engine control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549465A (en) * 1976-04-15 1979-08-08 Fiat Spa Process and device for determining the quantity of air inducted by an internal combustion otto cyclo engine with fuel injection
US4967711A (en) * 1988-07-29 1990-11-06 Fuji Jukogyo Kabushiki Kaisha Fuel injection control system for automotive engine
EP0521545A2 (en) * 1991-07-01 1993-01-07 General Motors Corporation Apparatus for diagnosing faults in engine air intake valve
US5497329A (en) * 1992-09-23 1996-03-05 General Motors Corporation Prediction method for engine mass air flow per cylinder
EP0639704A1 (en) * 1993-08-20 1995-02-22 Regie Nationale Des Usines Renault S.A. Method for calculating the mass of air admitted to an internal combustion engine
US6276341B1 (en) * 1999-01-26 2001-08-21 Mitsubishi Denki Kabushiki Kaisha Internal-combustion engine control system

Also Published As

Publication number Publication date
SE523738C2 (en) 2004-05-11
WO2003018978A2 (en) 2003-03-06
SE0102795L (en) 2003-02-23
SE0102795D0 (en) 2001-08-22
AU2002330347A1 (en) 2003-03-10

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