EP 1570165 A1 20050907 - METHOD FOR ADAPTING THE CHARACTERISTIC CURVE OF AN INJECTION VALVE
Title (en)
METHOD FOR ADAPTING THE CHARACTERISTIC CURVE OF AN INJECTION VALVE
Title (de)
VERFAHREN ZUM ANPASSEN DER CHARAKTERISTIK EINES EINSPRITZVENTILS
Title (fr)
PROCEDE D'ADAPTATION DE LA COURBE CARACTERISTIQUE D'UNE SOUPAPE D'INJECTION
Publication
Application
Priority
- DE 10257686 A 20021210
- EP 0313378 W 20031127
Abstract (en)
[origin: WO2004053316A1] The invention relates to a method for adapting an injection valve characteristic curve of a controlled fuel injection valve for an internal combustion engine, said curve reflecting the reference injection behaviour, to alterations in the actual injection behaviour caused by ageing. According to said method: during an operating mode of the internal combustion engine, which does not require an injection of fuel, the injection valve is intermittently controlled in accordance with a control period, said mode alternating with a period of no fuel injection, i.e. at least one working cycle with injection-valve control follows or precedes a working cycle without injection-valve control; at least one respective RPM value of the internal combustion engine is detected for the controlled working cycle and for at least one of the working cycles without control; a differential between the detected values is calculated and said differential is used to correct the characteristic curve.
IPC 1-7
IPC 8 full level
F02D 41/12 (2006.01); F02D 41/20 (2006.01); F02D 41/24 (2006.01); F02D 41/40 (2006.01)
CPC (source: EP US)
F02D 41/123 (2013.01 - EP US); F02D 41/20 (2013.01 - EP US); F02D 41/2438 (2013.01 - EP US); F02D 41/2467 (2013.01 - EP US); F02D 41/40 (2013.01 - EP US); F02D 2041/2055 (2013.01 - EP US); F02D 2200/1012 (2013.01 - EP US)
Citation (search report)
See references of WO 2004053316A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2004053316 A1 20040624; AU 2003293737 A1 20040630; DE 10257686 A1 20040715; DE 50304395 D1 20060907; EP 1570165 A1 20050907; EP 1570165 B1 20060726; US 2006047405 A1 20060302; US 7139657 B2 20061121
DOCDB simple family (application)
EP 0313378 W 20031127; AU 2003293737 A 20031127; DE 10257686 A 20021210; DE 50304395 T 20031127; EP 03789098 A 20031127; US 53841205 A 20050610