EP 1264227 A1 20021211 - METHOD AND DEVICE FOR MASS FLOW DETERMINATION VIA A CONTROL VALVE AND FOR DETERMINING A MODELED INDUCTION PIPE PRESSURE
Title (en)
METHOD AND DEVICE FOR MASS FLOW DETERMINATION VIA A CONTROL VALVE AND FOR DETERMINING A MODELED INDUCTION PIPE PRESSURE
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ERMITTELN EINES MASSENSTROMES ÜBER EIN STEUERVENTIL UND ZUM ERMITTELN EINES MODELLIERTEN SAUGROHRDRUCKS
Title (fr)
PROCEDE ET DISPOSITIF DE DETERMINATION D'UN DEBIT-MASSE VIA UNE VANNE DE REGLAGE, ET DE DETERMINATION D'UNE PRESSION MODELISEE AU COLLECTEUR D'ADMISSION
Publication
Application
Priority
- DE 0100200 W 20010118
- DE 10005569 A 20000209
- DE 10041073 A 20000822
Abstract (en)
[origin: WO0159536A1] A characteristic flow rate of a valve is adapted by weighing the input value valve position with a variable offset value in order to improve the accuracy of mass flow determination even when the valve is choked. The aim of the invention is to calculate a robust model for the induction pipe pressure (psaugm) by determining a modeled partial pressure (pagr) of the returned exhaust gas that deviates as little as possible from the real partial pressure of the returned exhaust gas. To this end, a modeled partial pressure (pagr) of the returned exhaust gas is derived from a characteristic flow rate of a valve disposed in an exhaust gas return pipe, depending on the valve position. The modeled partial pressure (pagr) of the returned exhaust gas derived from the characteristic flow rate is corrected adaptively, on the basis of the difference ( DELTA ps) between the modeled induction pipe pressure (psaugm) and a measured induction pipe pressure (psaug) (19).
IPC 1-7
IPC 8 full level
G01F 9/00 (2006.01); F02D 21/08 (2006.01); F02D 45/00 (2006.01); G05D 7/00 (2006.01); G05D 7/06 (2006.01)
CPC (source: EP US)
F02D 41/0072 (2013.01 - EP US); F02D 2200/0402 (2013.01 - EP US); F02D 2200/0408 (2013.01 - EP US); Y02T 10/40 (2013.01 - EP US)
Citation (search report)
See references of WO 0159536A1
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
WO 0159536 A1 20010816; CN 1416541 A 20030507; EP 1264227 A1 20021211; JP 2003522888 A 20030729; US 2003075158 A1 20030424
DOCDB simple family (application)
DE 0100200 W 20010118; CN 01804767 A 20010118; EP 01913510 A 20010118; JP 2001558803 A 20010118; US 20359302 A 20021011