EP 0184626 A2 19860618 - Control method for a fuel injection engine.
Title (en)
Control method for a fuel injection engine.
Title (de)
Steuerverfahren für einen Motor mit Kraftstoffeinspritzung.
Title (fr)
Méthode de commande pour moteur à injection de carburant.
Publication
Application
Priority
JP 24812784 A 19841126
Abstract (en)
The fuel injection quantity required for maintaining the air-fuel ratio of the mixture supplied to each cylinder of an engine (10) at a desired value is determined by calculating from sensor data a deposition rate X at which injected fuel deposits and forms film mass on an intake manifold wall (21) of the engine and a vaporization rate 1/ tau at which the film mass vaporizes from the manifold wall, calculating a current film mass quantity Mf from the calculated X and 1/ tau and the fuel quantity by the preceding injection, calculating a desired fuel quantity Qa/(A/F) to be supplied to the cylinder from an intake air flow Qa and a desired air-fuel ratio A/F and determining a current fuel injection quantity Gf from the calculation results in accordance with the following equation <MATH> Also, an accurate film mass quantity estimation is accomplished by subtracting a calculated value of a carry-over fuel quantity to be delivered to the cylinder from the film mass quantity estimated during the preceding period and adding a calculated value of a wall deposition fuel quantity per period obtained on the basis of an actual fuel injection quantity per stroke of the engine to the remaining film mass quantity thereby estimating a current film mass quantity.
IPC 1-7
IPC 8 full level
F02D 41/00 (2006.01); F02D 41/04 (2006.01); F02D 41/14 (2006.01)
CPC (source: EP KR)
F02D 41/047 (2013.01 - EP); F02D 41/34 (2013.01 - KR)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0184626 A2 19860618; EP 0184626 A3 19860827; EP 0184626 B1 19900110; DE 3575331 D1 19900215; JP 2550014 B2 19961030; JP S61126337 A 19860613; KR 860004235 A 19860618; KR 930012226 B1 19931224
DOCDB simple family (application)
EP 85112425 A 19851001; DE 3575331 T 19851001; JP 24812784 A 19841126; KR 850007221 A 19850930