EP 1433944 B1 20120808 - ATMOSPHERIC PRESSURE DETECTOR OF INTERNAL COMBUSTION ENGINE
Title (en)
ATMOSPHERIC PRESSURE DETECTOR OF INTERNAL COMBUSTION ENGINE
Title (de)
DETEKTOR EINER BRENNKRAFTMASCHINE ZUR ERFASSUNG VON ATMOSPHÄRISCHEM DRUCK
Title (fr)
DETECTEUR DE PRESSION ATMOSPHERIQUE POUR MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- JP 0210340 W 20021003
- JP 2001308628 A 20011004
- JP 2002270007 A 20020917
Abstract (en)
[origin: EP1433944A1] Intake pressures PMi ÄmmHgÜ are detected at each crank angle position of 30 DEG Ä DEG CA (Crank Angle)Ü after an internal combustion engine 1 is started, and the intake pressures PMi are smoothed according to transition conditions thereof so as to be obtained as an atmospheric pressure. As this occurs, the plurality of intake pressures PMi are smoothed provided that a difference DELTA PM between the maximum PMMAX and minimum PMMIN of the plurality of intake pressures PMi is small enough to fall within a predetermined value. As an atmospheric pressure, when intake pressures PMi are stable, can be obtained by the plurality of samplings at the crank angle positions, the reliability of an atmospheric pressure detector for an internal combustion engine can be increased. <IMAGE>
IPC 8 full level
F02D 45/00 (2006.01); F02D 41/18 (2006.01)
CPC (source: EP)
F02D 41/18 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/703 (2013.01); F02D 2200/704 (2013.01)
Designated contracting state (EPC)
IT
DOCDB simple family (publication)
EP 1433944 A1 20040630; EP 1433944 A4 20081029; EP 1433944 B1 20120808; CN 100510363 C 20090708; CN 1476515 A 20040218; JP 2003176749 A 20030627; WO 03031793 A1 20030417
DOCDB simple family (application)
EP 02779903 A 20021003; CN 02803124 A 20021003; JP 0210340 W 20021003; JP 2002270007 A 20020917