EP 1971765 A1 20080924 - INJECTOR CALIBRATION METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE
Title (en)
INJECTOR CALIBRATION METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE
Title (de)
INJEKTORABGLEICHVERFAHREN ZUM BETREIBEN EINER BRENNKRAFTMASCHINE
Title (fr)
PROCÉDÉ D'AJUSTAGE D'UN INJECTEUR POUR FAIRE FONCTIONNER UN MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- EP 2007055103 W 20070525
- DE 102006027405 A 20060613
Abstract (en)
[origin: WO2007144253A1] The invention relates to a method for operating an internal combustion engine, having the steps: (a) during an overrun phase of the internal combustion engine, activating an injector of a first combustion chamber for a predetermined activation time t<SUB>inj</SUB> with a predetermined activation voltage U<SUB>i=1</SUB>, (b) measuring a torque variation, (c) determining, from the torque variation, a fuel quantity m<SUB>i=1</SUB> of the fuel injected by the injector during the activation time t<SUB>inj</SUB>, (d) varying the activation voltage to a value U<SUB>i+1</SUB> which differs from U<SUB>i</SUB>, (e) repeating steps (a) to (d) with further incrementation of i until i has reached a preset value N or the internal combustion engine is no longer in the overrun phase, and (f) determining an injector characteristic value of the injector of the first combustion chamber from the fuel quantities m<SUB>1</SUB>, m<SUB>2</SUB>,..., m<SUB>N</SUB> and the activation voltages U<SUB>1</SUB>, U<SUB>2</SUB>,..., U<SUB>N</SUB>.
IPC 8 full level
F02D 41/12 (2006.01); F02D 41/20 (2006.01); F02D 41/22 (2006.01); F02D 41/24 (2006.01); F02D 41/38 (2006.01)
CPC (source: EP US)
F02D 41/0087 (2013.01 - EP US); F02D 41/2096 (2013.01 - EP US); F02D 41/221 (2013.01 - EP US); F02D 41/2438 (2013.01 - EP US); F02D 41/2441 (2013.01 - EP US); F02D 41/2467 (2013.01 - EP US); F02D 41/008 (2013.01 - EP US); F02D 41/123 (2013.01 - EP US); F02D 2041/2051 (2013.01 - EP US); F02D 2041/228 (2013.01 - EP US); F02D 2041/389 (2013.01 - EP US); F02D 2200/0614 (2013.01 - EP US); F02D 2200/1002 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 102006027405 B3 20071213; CN 101395361 A 20090325; CN 101395361 B 20120627; EP 1971765 A1 20080924; US 2009177365 A1 20090709; US 7765054 B2 20100727; WO 2007144253 A1 20071221
DOCDB simple family (application)
DE 102006027405 A 20060613; CN 200780007086 A 20070525; EP 07729530 A 20070525; EP 2007055103 W 20070525; US 28094407 A 20070525