EP 2358988 B1 20120919 - CONTROL AND REGULATION METHOD FOR AN INTERNAL COMBUSTION ENGINE HAVING A COMMON RAIL SYSTEM
Title (en)
CONTROL AND REGULATION METHOD FOR AN INTERNAL COMBUSTION ENGINE HAVING A COMMON RAIL SYSTEM
Title (de)
STEUERUNGS- UND REGELUNGSVERFAHREN FÜR EINE BRENNKRAFTMASCHINE MIT EINEM COMMON-RAILSYSTEM
Title (fr)
PROCÉDÉ DE COMMANDE ET DE RÉGULATION D'UN MOTEUR À COMBUSTION INTERNE ÉQUIPÉ D'UN SYSTÈME À RAMPE COMMUNE
Publication
Application
Priority
- EP 2009007989 W 20091109
- DE 102008058720 A 20081124
Abstract (en)
[origin: WO2010057588A1] The invention relates to a control and regulation method for an internal combustion engine having a common rail system, wherein a rail pressure is regulated in normal operation in that a first actual rail pressure is determined via a first filter from the rail pressure, an offset is calculated from a target rail pressure and the first actual rail pressure, a variable is calculated via a pressure regulator from the offset and a PWM signal having a first PWM frequency (f1) for activation of a control process is determined in dependence on the variable. A second actual rail pressure (pCR2(IST) is determined via a second filter, a load rejection is recognized if the second actual rail pressure (pCR2(IST)) exceeds a first threshold value (GW1), upon exceeding the first threshold value (GW1) the PWM signal switches over from the first PWM frequency (f1) to a second PWM frequency (f2) and the rail pressure is controlled upon exceeding a second threshold value in that the PWM signal is temporarily set to a PWM value that is higher than that of normal operation.
IPC 8 full level
F02D 41/38 (2006.01)
CPC (source: EP US)
F02D 41/3845 (2013.01 - EP US); F02D 41/20 (2013.01 - EP); F02D 2041/1432 (2013.01 - EP US); F02D 2041/2027 (2013.01 - EP US); F02D 2200/0602 (2013.01 - EP US); F02D 2250/31 (2013.01 - EP); F02M 59/366 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DE 102008058720 A1 20100527; CN 102245884 A 20111116; CN 102245884 B 20140813; EP 2358988 A1 20110824; EP 2358988 B1 20120919; US 2011220066 A1 20110915; US 8844501 B2 20140930; WO 2010057588 A1 20100527
DOCDB simple family (application)
DE 102008058720 A 20081124; CN 200980148028 A 20091109; EP 09771694 A 20091109; EP 2009007989 W 20091109; US 200913130806 A 20091109