초록 ▼

An engine control method for an internal combustion engine having a powertrain control module (PCM). The powertrain control module includes a microprocessor and associated memory. A mathematical model of the engine cycle of the engine system is stored in the PCM memory. The PCM continuously monitors

An engine control method for an internal combustion engine having a powertrain control module (PCM). The powertrain control module includes a microprocessor and associated memory. A mathematical model of the engine cycle of the engine system is stored in the PCM memory. The PCM continuously monitors a variety of engine operating parameters. From these inputs, the PCM generates optimized control setpoints for the intake airflow, fueling right, spark timing and EGR flow for the engine using the mathematical model. The setpoints are generated in real-time for every engine cycle, and the engine is then operated in accordance with the generated control setpoints. In another aspect of the invention, the engine model includes submodels for fuel delivery, the in-cylinder processes, the engine heat capacitance and cooling system, engine friction, airflow, engine inertia, and the front-end auxiliary drive. The disclosed engine control method is advantageous in that it allows optimum engine performance in any operating environment.

대표청구항 ▼

[ What is claimed is:] [1.] A real-time calibration method for an internal combustion engine having a powertrain control module including a microprocessor and associated memory comprising the steps of:storing in said memory a mathematical model of the combustion cycle of said engine system said math

[ What is claimed is:] [1.] A real-time calibration method for an internal combustion engine having a powertrain control module including a microprocessor and associated memory comprising the steps of:storing in said memory a mathematical model of the combustion cycle of said engine system said mathematical model comprising at least two models selected from the group consisting of a fuel delivery model, a model of in-cylinder processes, a heat capacitance and cooling system model, an engine friction model, an airflow model, and an engine inertia model;continuously monitoring at least one engine operating parameter;generating control setpoints for intake air, fueling rate, spark timing, and exhaust gas recirculation for said engine with said mathematical model as a function of said engine operating parameters per every engine cycle; andoperating said engine in accordance with said control setpoints.