Global Patent Index - EP 1647688 A1

EP 1647688 A1 20060419 - Fuel injection control device for internal combustion engine

Title (en)

Fuel injection control device for internal combustion engine

Title (de)

Kraftstoffeinspritzsteuerungsvorrichtung für eine Brennkraftmaschine

Title (fr)

Dispositif pour la commande de l'injection de carburant pour un moteur à combustion interne

Publication

EP 1647688 A1 20060419 (EN)

Application

EP 05022621 A 20051017

Priority

JP 2004302406 A 20041018

Abstract (en)

Based on conventional control considering a smoke concentration, a basic fuel injection quantity Q B or a fuel injection quantity Q smoke according to smoke concentration regulation, whichever is smaller, is taken as an injection quantity Q 0 . Basically, if the outlet temperature of a DPF (21) detected by a sensor (23b) reaches a temperature at which PM can be burned off, a correction for increasing according to this temperature is made to the injection quantity Q 0 to give an injection quantity Q F . As auxiliary control, if the inlet temperature of the DPF (21) detected by a sensor (23a) is low even when the outlet temperature is high, the correction for increasing, which has been made according to the outlet temperature, is cancelled, and the injection quantity Q 0 is given as the in F after correction, because the entire DPF (21) is in a filter state suitable for burning off PM.

IPC 8 full level

F02D 41/02 (2006.01); F01N 3/023 (2006.01)

CPC (source: EP)

F01N 13/009 (2014.06); F02D 41/029 (2013.01); F01N 3/035 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR

DOCDB simple family (publication)

EP 1647688 A1 20060419; EP 1647688 B1 20100721; CN 100577994 C 20100106; CN 1948724 A 20070418; DE 602005022392 D1 20100902; JP 2006112370 A 20060427; JP 4356583 B2 20091104

DOCDB simple family (application)

EP 05022621 A 20051017; CN 200510114127 A 20051016; DE 602005022392 T 20051017; JP 2004302406 A 20041018