+

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

Info

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Measuring Fluid Pressure (AREA)

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
SE0102795A SE523738C2 (en) 2001-08-22 2001-08-22 A method for measuring the air flow to an internal combustion engine
SE0102795-2 2001-08-22

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
SE0102795D0 (en) 2001-08-22
WO2003018978A2 (en) 2003-03-06
AU2002330347A1 (en) 2003-03-10
SE0102795L (en) 2003-02-23

Similar Documents

Publication Publication Date Title
EP2037108B1 (en) Method for the acquisition and processing of an intake pressure signal in an internal combustion engine without an intake manifold
DE60124528D1 (en) MEASURING THE AIR FLOW OF AN INTERNAL COMBUSTION ENGINE
WO1999015872A3 (en) Method for evaluating the march of pressure in a combustion chamber
EP0594114A3 (en) Fuel metering control system in internal combustion engine
WO2003029777A3 (en) Method for identifying a leak in the intake port of an internal combustion engine and an internal combustion engine that is equipped accordingly
KR910006704A (en) Method and apparatus for measuring back pressure of engine exhaust gas
EP1471216A3 (en) Apparatus and method for determining oil change based upon oil viscosity
WO2005019623A3 (en) Engine timing control with intake air pressure sensor
US10697386B2 (en) Method and device for determining the air flow rate entering the intake manifold of a two-stroke engine
CN109424387A (en) The connection status decision maker of ventilation duct
CA2048085A1 (en) Method and apparatus for inferring barometric pressure surrounding an internal combustion engine
KR900014727A (en) Fuel control device of internal combustion engine
KR910010052A (en) Internal combustion engine controller
DE60025863D1 (en) Device for determining the air mass in the piston of an internal combustion engine with variable valve timing
ATE287035T1 (en) METHOD AND DEVICE FOR MONITORING A PRESSURE SENSOR
ATE508269T1 (en) ENGINE CONTROL DEVICE
EP1114926A3 (en) Sensor performance monitoring
CA2012431A1 (en) Method and means for determining air mass in a crankcase scavenged two-stroke engine
EP1255100A3 (en) Misfire deciding method and misfire deciding system for internal combustion engines
EP1553388A3 (en) Intake-air mass measuring apparatus for internal combustion engine
CA2017523A1 (en) Method and means for determining air mass in a crankcase scavenged two-stroke engine
WO2003018978A3 (en) Method for measuring the airflow in an internal combustion engine
WO1995007449A3 (en) Method for determining the combustion ratio of a reciprocating-piston internal combustion engine
EP1416141A3 (en) Method and apparatus for estimating and controlling the amount of air drawn into a cylinder of an internal combustion engine
EP1291515A3 (en) Temperature estimating apparatus for internal combustion engine

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ OM PH PL PT RU SD SE SG SI SK SL TJ TM TN TR TZ UA UG US UZ VC VN YU ZA ZM

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE BG CH CY CZ DK EE ES FI FR GB GR IE IT LU MC PT SE SK TR BF BJ CF CG CI GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载