Global Patent Index - EP 0980972 A2

EP 0980972 A2 20000223 - Apparatus and method for controlling fuel injection in internal combustion engine

Title (en)

Apparatus and method for controlling fuel injection in internal combustion engine

Title (de)

Kraftstoffeinspritzsteuervorrichtung und -Verfahren für eine Brennkraftmaschine

Title (fr)

Dispositif et méthode de commande d'injection de carburant pour moteur à combustion interne


EP 0980972 A2 20000223 (EN)


EP 99110286 A 19990527


JP 23321998 A 19980819

Abstract (en)

An apparatus and a method for controlling fuel injection in an internal combustion engine (1) for preventing torsional vibrations of the engine without deteriorating the acceleration performance is disclosed. The apparatus is provided with a control unit (an ECU) (30) for controlling a fuel injection quantity for the diesel engine (1) of a vehicle (10). The ECU (30) calculates the change rate DELTA NE of engine revolutions in accordance with an input from a crank angle sensor (35) and subtracts a value obtained by smoothing a variation component of DELTA NE from the DELTA NE so as to extract a torsional vibration component thereof. Moreover, the ECU (30) corrects the fuel injection quantity of the engine to reduce the torsional vibration component. Since the extracted torsional vibration component does not contain steady change in the revolutions during acceleration or the like, the steady change in the revolutions caused only by the acceleration is not affected by the correction of the fuel injection quantity. Therefore, deterioration in the acceleration performance caused by prevention of the torsional vibrations can be prevented. <IMAGE>

IPC 1-7

F02D 41/38; F02D 41/14; F02D 41/10

IPC 8 full level

F02D 41/04 (2006.01); F02D 41/10 (2006.01); F02D 41/14 (2006.01); F02D 45/00 (2006.01)

CPC (source: EP)

F02D 41/10 (2013.01); F02D 41/1497 (2013.01); F02D 41/1498 (2013.01); F02D 2200/1015 (2013.01); F02D 2250/28 (2013.01)

Designated contracting state (EPC)


DOCDB simple family (publication)

EP 0980972 A2 20000223; EP 0980972 A3 20010516; EP 0980972 B1 20070328; DE 69935639 D1 20070510; DE 69935639 T2 20071213; JP 2000064880 A 20000229; JP 3367429 B2 20030114

DOCDB simple family (application)

EP 99110286 A 19990527; DE 69935639 T 19990527; JP 23321998 A 19980819