초록 ▼

A method and system of combustion control for an internal combustion engine (313) proximate an extinction limit includes measurement of acceleration behavior of the internal combustion engine and providing a measure of combustion variability dependent thereon. Preferably, the combustion variability

A method and system of combustion control for an internal combustion engine (313) proximate an extinction limit includes measurement of acceleration behavior of the internal combustion engine and providing a measure of combustion variability dependent thereon. Preferably, the combustion variability measure is derived by one or more stochastically based methods (607). Operation of the internal combustion engine (313) is controlled dependent on the combustion variability measurement. Fuel, ignition, and exhaust gas recirculation may all be controlled by the derived combustion variability measurement to significantly reduce hydrocarbon (HC) and NO.sub.x emissions.

대표청구항 ▼

[ What is claimed is:] [1.] A method of combustion control for an internal combustion engine proximate an extinction limit comprising the steps of:measuring crankshaft acceleration behavior of the internal combustion engine, and providing a raw acceleration signal dependent thereon;establishing a su

[ What is claimed is:] [1.] A method of combustion control for an internal combustion engine proximate an extinction limit comprising the steps of:measuring crankshaft acceleration behavior of the internal combustion engine, and providing a raw acceleration signal dependent thereon;establishing a sub-misfire amplitude threshold;establishing a misfire amplitude threshold; andanalyzing behavior of the raw acceleration signal bounded between the sub-misfire and misfire amplitude thresholds and providing the combustion variability signal dependent thereon; andcontrolling fueling operation of the internal combustion engine dependent on the combustion variability signal.