EP 2284380 A2 20110216 - Method for controlling the common rail pressure of a direct injection engine
Title (en)
Method for controlling the common rail pressure of a direct injection engine
Title (de)
Verfahren zur Steuerung eines Common-Rail-Direkteinspritzungssystems
Title (fr)
Méthode de contrôle de la pression dans une rampe d'injection commune d'un moteur à injection directe
Publication
Application
Priority
IT BO20090545 A 20090812
Abstract (en)
A method for controlling a direct injection system (1) of common-rail type of an internal combustion engine (2); the direct injection system (1) has: a fuel tank (10), a low pressure pump (8) which draws from the tank (10), and a high pressure pump (6) which receives the fuel from the low pressure pump (8) and feeds the pressurized fuel to a common rail (5) connected to a number of injectors (4); the control method includes the steps of: determining a desired pressure (P railref ) of the fuel inside the common rail (5); and regulating the delivery of the low pressure pump (8) towards the high pressure pump (6) to pursue the desired pressure (P railref ) of the fuel inside the common rail (5) and so as to obtain a corresponding regulation of the delivery of the high pressure pump (6) towards the common rail (5). The method involves determining closed loop contribution, open loop contribution (feedforward) and the use of nested control loops.
IPC 8 full level
F02D 41/38 (2006.01); F02D 41/14 (2006.01); F02M 55/02 (2006.01); F02M 63/02 (2006.01)
CPC (source: EP)
F02D 41/3854 (2013.01); F02D 2041/141 (2013.01); F02D 2041/1419 (2013.01); F02D 2200/0602 (2013.01); F02D 2250/31 (2013.01)
Citation (applicant)
- EP 0481964 A2 19920422 - NIPPON DENSO CO [JP]
- US 6116870 A 20000912 - KRAEMER MANFRED [DE]
- EP 1612402 A1 20060104 - FIAT RICERCHE [IT]
Designated contracting state (EPC)
AL 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
Designated extension state (EPC)
BA ME RS
DOCDB simple family (publication)
EP 2284380 A2 20110216; EP 2284380 A3 20130828; EP 2284380 B1 20171129; IT 1395038 B1 20120905; IT BO20090545 A1 20110213
DOCDB simple family (application)
EP 10172447 A 20100811; IT BO20090545 A 20090812