On-Line Identification of Fuel Injection Timing Using Cylinder Balancing

Identification of the injection timing drift in modern diesel engine is investigated. The cylinder balancing action which is most common in modern diesel engine is utilized in locating the injection timing (injection timing with the minimum cylinder balancing correction). To find the minimum, several approaches are examined, including a parameterization based approach, sliding mode based self optimizing control and the simplex search. The proposed approaches are evaluated with experimental data from a vehicle.