Global Patent Index - EP 1433944 A4

EP 1433944 A4 20081029 - 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

EP 1433944 A4 20081029 (EN)

Application

EP 02779903 A 20021003

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 1-7

F02D 45/00

IPC 8 full level

F02D 41/18 (2006.01); F02D 45/00 (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)

Citation (search report)

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