Combustion Stability Control Based on Cylinder Pressure for High Efficiency Gasoline Engines

Minimizing fuel consumption of passenger car vehicles can be achieved thanks to hybridization the powertrain associated with innovative engine technologies. To feed new high compression ratio combustion systems, air system cutting-edge technologies are used manage and EGR (Exhaust Gas Recirculation) quantities. Increasing allows us improve in efficiency area, but it comes at cost a loss stability. It is then primary importance able near stability limit minimize consumption. So far, managed open-loop conservative calibration quantity, implying losses. This paper addresses feedback control using in-cylinder pressure sensors. From this information, an indicator proposed, offering more robust behavior transient situations than state-of-the-art indicators. controller that adapts target go towards limit. Experimental results obtained on gasoline stress relevance approach minimizing under real driving conditions.