FUEL QUALITY DEPENDENT INJECTION TIMING CONTROL FOR AN INTERNAL COMBUSTION ENGINE

摘要

A method for controlling an automotive internal combustion engine (1) having direct fuel injection is described, the method comprising a fuel adaption part in which a fuel quality parameter (F) is determined using a first fuel quality parameter determination procedure under predetermined conditions, and a control part which uses the value of a fuel combustion characteristics parameter (MFB50) derived from the fuel quality parameter (F) as a target value (±T) in a closed-loop control of the start of injection (SOl) at the engine (1), with the closed-loop control using a second fuel quality parameter determination procedure being different from the first fuel quality parameter determination procedure to determine an actual value (±A) of the fuel combustion characteristics parameter (MFB50).