Patent ID: 6698409
Filing Date: 2004-03-02
Classification: F02D,Y02T

Abstract:
An internal combustion engine comprising:a control system comprising a processor for processing various data to develop data for control of engine fueling and of exhaust gas recirculation, wherein the processor: a) processes engine speed data and engine fueling data according to a function that correlates values of basic exhaust gas recirculation with values of engine speed and engine fueling to develop basic exhaust gas recirculation data, b) processes engine speed data according to a function that correlates values of a speed-based modifier with values of engine speed to develop speed-based modifier data, c) processes engine fueling data to develop fueling transient data, d) processes the fueling transient data and the speed-based modifier data to develop speed-based fueling transient data, e) processes the speed-based fueling transient data according to a function that correlates values of a fueling transient modifier with values of speed-based fueling transient data to develop exhaust gas recirculation modifier data, f) processes the exhaust gas recirculation modifier data and the basic exhaust gas recirculation data to develop modified exhaust gas recirculation data, and g) causes exhaust gas to be recirculated in accordance with the modified exhaust gas recirculation data.