초록 ▼

A method of controlling an internal combustion engine includes determining an exhaust gas recirculation (EGR) command signal based on at least one engine condition, and determining a variable geometry turbocharger (VGT) command signal based on at least one engine condition and at least partially bas

A method of controlling an internal combustion engine includes determining an exhaust gas recirculation (EGR) command signal based on at least one engine condition, and determining a variable geometry turbocharger (VGT) command signal based on at least one engine condition and at least partially based on the EGR command signal. Advantageously, the EGR system and VGT system may be continuously and simultaneously controlled, taking into account the effects of each system on the other, to provide improved and more precise control over engine air flow. In an alternative embodiment, an engine may be controlled with a feedback control system where engine intake chemical composition is the feedback variable.

대표청구항 ▼

[ What is claimed is:] [2.]2. A method of controlling an internal combustion engine, the engine including a variable geometry turbocharger (VGT) driven in response to a VGT command signal, the engine further including a variable flow exhaust gas recirculation (EGR) system driven in response to an EG

[ What is claimed is:] [2.]2. A method of controlling an internal combustion engine, the engine including a variable geometry turbocharger (VGT) driven in response to a VGT command signal, the engine further including a variable flow exhaust gas recirculation (EGR) system driven in response to an EGR command signal to recirculate exhaust to an engine intake mixture, the method comprising:determining a desired carbon dioxide quantity of the intake mixture;estimating an actual carbon dioxide quantity of the intake mixture;comparing the desired carbon dioxide quantity to the estimated actual carbon dioxide quantity to determine an error signal;determining the EGR command signal based on the error signal; anddetermining the VGT command signal based on at least one engine condition and at least partially based on the EGR command signal.