Abstract: A fuel control system of an engine includes a simulation module and a control module. The simulation module generates a simulated pre-catalyst exhaust gas oxygen (EGO) sensor signal based on a simulated oxygen concentration of an exhaust gas. The simulation module determines a simulated pre-catalyst equivalence ratio (EQR) for the exhaust gas based on the simulated pre-catalyst EGO sensor signal. The control module generates a desired pre-catalyst EGO sensor signal based on a desired oxygen concentration of the exhaust gas. The control module determines a desired pre-catalyst EQR based on the desired pre-catalyst EGO sensor signal. The control module determines a cost function based on the simulated pre-catalyst EQR and the desired pre-catalyst EQR. The fuel control system is calibrated based on the cost function.

Abstract: A fuel control system of an engine system comprises a pre-catalyst exhaust gas oxygen (EGO) sensor, a setpoint generator module, a sensor offset module, and a control module. The pre-catalyst EGO sensor generates a pre-catalyst EGO signal based on an air-fuel ratio of an exhaust gas. The setpoint generator module generates a desired pre-catalyst equivalence ratio (EQR) signal based on a desired EQR of the exhaust gas. The sensor offset module determines an offset value of the pre-catalyst EGO sensor. The control module generates an expected pre-catalyst EGO signal based on the desired pre-catalyst EQR signal and the offset value.

Abstract: A method for calibrating an engine control system includes identifying engine calibration sub-problems for an engine calibration; seeding an initial generation for one of the engine calibration sub-problems with known/good individuals; optimizing free parameters in the one of the engine calibration sub-problem over a parameter/coefficient scheduling space using a genetic algorithm; using penalty functions; identifying a next one of the engine calibration sub-problems containing a prior one of the engine calibration sub-problems; seeding an initial population of the next one of the engine calibration sub-problems with know/good individuals; repeating until the engine calibration containing the engine calibration sub-problems is solved; and operating an engine control system of a vehicle using the engine calibration.

Abstract: A method for calibrating an engine control system comprises identifying engine calibration sub-problems for an engine calibration; seeding an initial generation for one of the engine calibration sub-problems with known/good individuals; optimizing free parameters in the one of the engine calibration sub-problem over a parameter/coefficient scheduling space using a genetic algorithm; using penalty functions; identifying a next one of the engine calibration sub-problems containing a prior one of the engine calibration sub-problems; seeding an initial population of the next one of the engine calibration sub-problems with know/good individuals; repeating until the engine calibration containing the engine calibration sub-problems is solved; and operating an engine control system of a vehicle using the engine calibration.

Abstract: A fuel control system of an engine system comprising a pre-catalyst exhaust gas oxygen (EGO) sensor and a control module. The pre-catalyst EGO sensor determines a pre-catalyst EGO signal based on an oxygen concentration of an exhaust gas. The control module determines a dither signal. The control module determines a fuel command based on the pre-catalyst EGO signal and the dither signal.

Abstract: A fuel control system of an engine system comprises a pre-catalyst exhaust gas oxygen (EGO) sensor and a control module. The pre-catalyst EGO sensor determines a pre-catalyst EGO signal based on an oxygen concentration of an exhaust gas. The control module determines at least one fuel command and determines at least one expected oxygen concentration of the exhaust gas. The control module determines a final fuel command for the engine system based on the pre-catalyst EGO signal, the fuel command, and the expected oxygen concentration.

Abstract: An engine control module comprises a table that outputs a parked VE estimate based on an input parameter when intake and exhaust cam phasers of an engine are in a parked position. A calculation module calculates VE estimate when the intake and exhaust cam phasers are not in a parked position based on the parked VE estimate and a mathematical relationship.

Abstract: An engine control module comprises a table that outputs a parked VE estimate based on an input parameter when intake and exhaust cam phasers of an engine are in a parked position. A calculation module calculates VE estimate when the intake and exhaust cam phasers are not in a parked position based on the parked VE estimate and a mathematical relationship.

Abstract: A fuel control system for regulating fuel to cylinders of an internal combustion engine during an engine start and crank-to-run transition includes a first module that determines a plurality of step-ahead cylinder air masses (GPOs) for a cylinder based on a plurality of GPO prediction models. A second module regulates fueling to a cylinder of the engine based on the plurality of step-ahead GPOs until a combustion event of the cylinder. Each of the plurality of GPO prediction models is calibrated based on data from a plurality of test starts that are based on a pre-defined test schedule.

Abstract: A fuel control system delivers fuel to an engine cylinder and compensates for lost fuel. The fuel control system comprises a fuel dynamics module that determines a fuel dynamics model that is indicative of fuel behavior. The fuel dynamic module determines an inverse of the fuel dynamics model, receives a fuel command, and generates an adjusted fuel command based on the fuel command and the inverse of the fuel dynamics model. A lost fuel compensation module receives the adjusted fuel command and generates a final fuel command based on the adjusted fuel command and a lost fuel factor. A control module controls fuel delivery according to the final fuel command.

Abstract: A modeling system for a control parameter of a vehicle comprises a first model that formulates the control parameter in terms of linear spline basis functions, coefficients, and knots. A second model is derived according to the first model, includes coefficients that are derived according to the linear spline basis functions, coefficients, and knots, and forms a linear equation for the control parameter. A memory module stores the linear equation. A control module calculates the control parameter according to the linear equation.

Abstract: A fuel control system for regulating fuel to cylinders of an internal combustion engine during an engine start and crank-to-run transition includes a first module that determines a raw injected fuel mass based on a utilized fuel fraction (UFF) model and a nominal fuel dynamics (NFD) and a second module that regulates fueling to a cylinder of the engine based on the raw injected fuel mass until a combustion event of the cylinder. Each of the UFF and NFD models is calibrated based on data from a plurality of test starts-that are based on a pre-defined test schedule.

Abstract: A vehicle system includes a throttle position sensor that generates a current throttle position signal (TPS), a MAF sensor that generates a current actual MAF signal, and a manifold absolute pressure (MAP) sensor that generates a current actual MAP signal. A controller determines a current estimated cylinder air flow (CAF) signal, determines a MAF transient signal and determines a MAP transient signal. The controller determines a predicted CAF signal into the engine based on the current estimated CAF signal, the current actual MAF signal, the current MAP signal, a current TPS signal, the MAF transient signal and the MAP transient signal.

Abstract: An engine system includes an intake manifold, and an air inlet enabling an air flow into and out of the intake manifold. An air flow sensor is attached to the air inlet, and measures a flow of air through the air inlet. A first sensor is also included, and is operable to determine a direction of air flow. The air flow sensor is in communication with a controller, which records the mass of air flow through the air inlet. In one embodiment, the first sensor is a differential pressure that detects a pressure differential. In an alternative embodiment, a second sensor communicates with the air inlet, and the first sensor communicates with the intake manifold. The first and second sensors jointly determine a direction of air flow. In yet another embodiment, an output of the first sensor is compared to a calibrated barometric pressure to determine a direction of air flow.

Abstract: An engine system includes an intake manifold, and an air inlet enabling an air flow into and out of the intake manifold. An air flow sensor is attached to the air inlet, and measures a flow of air through the air inlet. A first sensor is also included, and is operable to determine a direction of air flow. The air flow sensor is in communication with a controller, which records the mass of air flow through the air inlet. In one embodiment, the first sensor is a differential pressure that detects a pressure differential. In an alternative embodiment, a second sensor communicates with the air inlet, and the first sensor communicates with the intake manifold. The first and second sensors jointly determine a direction of air flow. In yet another embodiment, an output of the first sensor is compared to a calibrated barometric pressure to determine a direction of air flow.

Abstract: An engine control system that identifies fuel dynamical steady state (FDSS) includes a cylinder and a controller that determines a detection period. The controller monitors a mass of fuel ingested by the cylinder during the detection period. The controller identifies FDSS if the mass of fuel remains within a predetermined range during the detection period.

Abstract: The invention provides a method for conducting mobile commerce by verifying user authorization at a hand held device. A transaction request is then transmitted from the hand held device. An amount and a transaction identification is transmitted from a base unit in response to the transaction request. The amount transmitted is displayed at the hand held device. A user identification and the transaction identification are then transmitted from the hand held device and a credit transaction is posted to the user identification from the base unit, as a function of the transaction identification.

Abstract: Engine cylinder inlet air rate measurement is provided with minimization of system calibration and parameter measurement using a correction generated under steady state engine inlet air dynamic conditions through a comparison of mass airflow-based engine inlet air rate measurement and a nominal calculated cylinder inlet air rate. The correction may be periodically updated under steady state engine inlet air dynamic conditions and may be applied under all engine inlet air dynamic conditions, especially transient inlet air dynamic conditions.

Abstract: The state of internal combustion engine inlet air dynamics is characterized in a substantially noise immune albeit rapid manner according to the degree by which a first set of criteria indicate a steady state condition in which engine inlet air rate substantially corresponds to cylinder inlet air rate or to the degree by which a second set of criteria indicate a transient condition in which engine inlet air rate does not substantially correspond to cylinder air rate. Cylinder inlet air rate may then be predicted in accord with the characterization.

Abstract: A method for controlling a vehicle engine includes predicting an engine parameter with a controller that determines measures of various engine parameters, determines a prediction set including at least one predicted value of a measurable engine parameter, determines an estimation set including at least one estimated value of the engine parameter and controls the engine in response to the estimated engine parameter.