Search International and National Patent Collections

1. (WO2015044501) METHOD FOR OPERATING PISTON ENGINE AND PISTON ENGINE

Pub. No.:    WO/2015/044501    International Application No.:    PCT/FI2013/050932
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Thu Sep 26 01:59:59 CEST 2013
IPC: F02D 41/30
F02D 41/40
F02D 41/00
F02D 19/06
F02D 19/10
Applicants: WÄRTSILÄ FINLAND OY
Inventors: NYLUND, Ingemar
DANBRATT, Johan
HARALDSON, Lennart
Title: METHOD FOR OPERATING PISTON ENGINE AND PISTON ENGINE
Abstract:
In the method for operating a piston engine, the engine is operated in a first operating mode by introducing main fuel into the cylinders (1) after pilot fuel injection has started, and in a second operating mode by introducing the main fuel into the cylinders (1) before the pilot fuel. One or more indicators of auto- ignition and/or a risk of auto-ignition of the main fuel are monitored and com- pared to predetermined ranges indicating auto-ignition or the risk of auto- ignition. If one or more of the monitored indicators is within the predetermined range, the engine is operated in the first operating mode, and if none of the monitored values is within the predetermined range, the engine is operated in the second operating mode.