Method for controlling combustion in cylinder of boosted engine in motor vehicle, involves increasing internal Exhaust-gas recirculation rate in cylinder during tip-out condition when temperature of intake air is below threshold

摘要

The method involves decreasing an internal exhaust-gas recirculation (EGR) rate in a cylinder (30) during a tip-out condition when temperature of intake air is above a threshold. The internal EGR rate in the cylinder is increased during a tip-out condition when the temperature of the intake air is below the threshold. A rate of dilution of intake air reserved upstream of the cylinder is reduced during the tip-out condition. A steady-state internal EGR rate in the cylinder is maintained before the tip-out condition.