Global Patent Index - EP 0860596 A3

EP 0860596 A3 2000-01-26 - Method for controlling the smooth running of an internal combustion engine

Title (en)

Method for controlling the smooth running of an internal combustion engine

Title (de)

Verfahren zur Regelung der Laufruhe eines Verbrennungsmotors

Title (fr)

Méthode de commande de la stabilité de marche d'un moteur à combustion interne

Publication

EP 0860596 A3 (DE)

Application

EP 98101982 A

Priority

DE 19706807 A

Abstract (en)

[origin: EP0860596A2] A procedure for controlling the quietness of a multi-cylinder IC engine depending on the measured value of running noise has a threshold specified for the noise and a control parameter is adjusted in small steps in the direction of increased noise if the measured value of the noise indicates quieter running than the threshold. The parameter is adjusted in a larger step in the direction of reduced noise if the measured value of the noise indicates louder running than the threshold. The change of the parameter takes place with a frequency of at least one hertz. As a measured value for the running noise, a value for the uniformity of rotation of a crankshaft sensor is used.

IPC 1-7 (main, further and additional classification)

F02D 41/14

IPC 8 full level (invention and additional information)

F02D 41/14 (2006.01)

CPC (invention and additional information)

F02D 41/1497 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0860596 A2 19980826; EP 0860596 A3 20000126; EP 0860596 B1 20030507; DE 19706807 A1 19980827; DE 19706807 C2 19990128