| 摘要 |
A system (100) is described for modeling various states of an operating engine and the adjustment of one or more operating characteristics of the engine based upon such modeling. A representative rate of change of a system mass for an engine is determined based upon, at least in part, a first state equation (102). A first representative mass flow approximating a mass flow across a throttle is determined based upon, at least in part, a second state equation (104). A second representative mass flow approximating a mass flow across an exhaust gas recirculation valve is determined based upon, at least in part, a third state equation (108). Determining the first representative mass flow includes specifying a throttle time constant modifier for the second state equation (106). Determining the second representative mass flow includes specifying an exhaust gas recirculation valve time constant modifier for the third state equation (110). |
