EP 1711702 B1 20100707 - METHOD FOR DETECTING THE BEGINNING OF COMBUSTION IN AN INTERNAL COMBUSTION ENGINE
Title (en)
METHOD FOR DETECTING THE BEGINNING OF COMBUSTION IN AN INTERNAL COMBUSTION ENGINE
Title (de)
VERFAHREN ZUR DETEKTION DES BRENNBEGINNS EINER BRENNKRAFTMASCHINE
Title (fr)
PROCEDE DE DETECTION DU DEBUT DE LA COMBUSTION DANS UN MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 2005000070 W 20050120
- DE 102004005325 A 20040204
Abstract (en)
[origin: WO2005075804A1] The method is used to detect the beginning of combustion in an internal combustion engine (1) comprising several cylinders (2, 3, 4, 5) by means of a rotation speed signal determined for a shaft (6) of the internal combustion engine (1). A segment signal (SS), whose signal length corresponds to an integral full rotation of the shaft (6),is extracted from the rotation speed signal. A cylinder signal (ZS1, ZS2, ZS3, ZS4), which reproduces the operational state in a cylinder (2, 3, 4, 5), is generated from the segment signal (SS). The cylinder signal (ZS1, ZS2, ZS3, ZS4) is transformed into a cylinder frequency signal (FS 1, FS2, FS3, FS4) in an angle frequency range. Signal information indicating the beginning of combustion in the associated cylinder (2, 3, 4, 5) is extracted from the cylinder frequency signal (FS 1, FS2, FS3, FS4) at at least one predefined angle frequency.
IPC 8 full level
F02D 41/14 (2006.01); F02D 41/00 (2006.01); F02D 41/34 (2006.01)
CPC (source: EP US)
F02D 35/028 (2013.01 - EP US); F02D 41/008 (2013.01 - EP US); F02D 41/009 (2013.01 - EP US); F02D 41/1408 (2013.01 - EP US); F02D 2041/288 (2013.01 - EP US); F02D 2200/1012 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005075804 A1 20050818; AT E473364 T1 20100715; BR PI0507414 A 20070626; CN 100507245 C 20090701; CN 1918380 A 20070221; DE 102004005325 A1 20050825; DE 112005000803 A5 20070524; DE 502005009858 D1 20100819; EP 1711702 A1 20061018; EP 1711702 B1 20100707; ES 2345341 T3 20100921; JP 2007520663 A 20070726; JP 4947412 B2 20120606; US 2008127945 A1 20080605; US 7516732 B2 20090414
DOCDB simple family (application)
DE 2005000070 W 20050120; AT 05714876 T 20050120; BR PI0507414 A 20050120; CN 200580004186 A 20050120; DE 102004005325 A 20040204; DE 112005000803 T 20050120; DE 502005009858 T 20050120; EP 05714876 A 20050120; ES 05714876 T 20050120; JP 2006553422 A 20050120; US 58792906 A 20060801