Abstract: A method and system for regulating a drive torque provided to a driveline of a vehicle includes monitoring an accelerator pedal position and a brake pedal position. An adjusted accelerator pedal position is determined based on the accelerator pedal position and the brake pedal position and a drive torque request is determined based on the adjusted accelerator pedal position. Drive torque is generated based on the drive torque request.

Abstract: A torque adaptation system is provided. The system includes: a torque error estimator module that estimates a torque error based on an error propagation model and a plurality of torque model parameters; and an adapt torque module that adapts a model torque based on the torque error.

Abstract: A method and system is disclosed for regenerating a particulate filter, desulfating a lean NOx trap, desulfating or regenerating a hydrocarbon-selective catalytic reduction catalyst, desulfating or regenerating a urea-selective catalytic reduction catalyst, or a combination thereof.

Abstract: A powertrain control system for a vehicle includes a plurality of axle torque request modules that generate respective axle torque requests based on respective performance criteria of a vehicle, an axle torque arbitration module that generates a net axle torque request based on the plurality of axle torque requests, a plurality of propulsion torque request modules that generate respective propulsion torque requests based on respective performance criteria of an engine of the vehicle, a propulsion torque arbitration module that determines a net engine torque request based on the net axle torque request and the plurality of propulsion torque requests, and a propulsion torque control module that controls a plurality of actuators based on the net engine torque request such that the engine produces an output torque in accordance with the net engine torque request.

Abstract: A method of determining an amount of nitrogen oxides (NOx) stored in a NOx trap of an engine exhaust assembly may include determining a mass flow rate of NOx into the NOx trap, determining an efficiency of storing of the NOx within the trap, and calculating the amount of NOx stored in the NOx trap based on the determined mass flow rate and the determined efficiency. The method may further include determining a mass flow rate of a reductant entering the NOx trap, determining a relationship between the determined reductant mass flow rate and the NOx removed from the NOx trap, and calculating the amount of NOx removed from the NOx trap based on the determined mass flow rate and the determined relationship. The calculated amount of NOx stored may be adjusted by subsequent amounts of calculated NOx stored and subsequent amounts of NOx removed from the NOx trap.

Abstract: A torque request generation system for use with a coordinated torque control system of a vehicle includes an input receiving a vehicle speed and an axle torque command. A datastore records a three-dimensional torque surface defined in terms of a coordinate system having a first axis related to the axle torque command, a second axis related to the vehicle speed, and a third axis related to an axle torque request. A torque request generation module accesses the datastore and generates a torque request based on a correlation between the axle torque command and the vehicle speed respective of the three-dimensional torque surface.

Abstract: A method and system for regulating a drive torque provided to a driveline of a vehicle includes monitoring an accelerator pedal position and a brake pedal position. An adjusted accelerator pedal position is determined based on the accelerator pedal position and the brake pedal position and a drive torque request is determined based on the adjusted accelerator pedal position. Drive torque is generated based on the drive torque request.

Abstract: A torque adaptation system is provided. The system includes, a torque error estimator module that estimates a torque error based on an error propagation model and a plurality of torque model parameters; and an adapt torque module that adapts a model torque based on the torque error.

Abstract: A torque adaptation system is provided. The system includes: a torque error estimator module that estimates a torque error based on an error propagation model and a plurality of torque model parameters; and an adapt torque module that adapts a model torque based on the torque error.

Abstract: A control system and method for controlling torque output of an engine include an air control module that receives an actual airflow and a desired airflow and outputs an adjusted actual airflow based on the actual airflow and the desired airflow. A fuel control module receives the adjusted actual airflow and controls fuel output based on the adjusted actual airflow, a ratio (?) of an operating air-fuel mixture to an ideal air-fuel mixture, and an operating curve (?traj).

Abstract: A powertrain braking system for a vehicle includes an powerplant that can be regulated to provide a desired powerplant torque and a transmission that transfers the desired powerplant torque at one of a plurality of gear ratios to provide a desired axle torque. A control module calculates an axle torque command based on a powertrain braking request and determines a shift command based on the powertrain braking request. The control module controls the powerplant based on the axle torque command and the transmission based on the shift command to achieve a desired vehicle deceleration rate that corresponds with the powertrain braking request.

Abstract: A system for reducing clunk in a driveline of a vehicle having an engine comprises a torque-based module that generates a torque request, a filter that receives the torque request from the torque-based module and that selectively modifies the torque request to reduce a rate of change of the torque request, and an engine control module that receives the modified torque request and actuates the engine to produce the modified torque request. The filter slows torque changes to a fixed rate within a range defined by an upper limit greater than zero torque and a lower limit less than zero torque. The filter applies a low-pass filter to the torque request when the torque request is greater than a cut-off value, and coefficients of the low-pass filter are selected from a table based upon the currently selected gear in the vehicle and an output of an aggressive driving evaluator.

Abstract: A control system that controls operation of an engine to achieve a desired vehicle drive characteristic includes a pedal sensor that generates a pedal device position signal and an adjusted pedal module that determines an adjusted pedal based on the pedal device position signal and a vehicle speed. An engine torque request module determines an engine torque request based on said adjusted pedal and an engine speed.

Abstract: A method of dynamically controlling torque output of a torque producing device includes determining a shaped torque command based on a torque command generated by an input device and calculating an actuator variable based on the shaped torque command and a gain. An actuator is regulated based on the actuator variable to adjust the torque output.

Abstract: A method of controlling torque output of an engine includes calculating a desired air-per-cylinder (APC) based on a torque command and determining an effective throttle area corresponding to the desired APC based on a non-dimensionalized model. A throttle is regulated based on the effective throttle area.

Abstract: A method and apparatus for converting a desired torque to a throttle area to generate the desired torque in an internal combustion engine including the steps of converting the desired torque to an air per cylinder value, converting the desired torque to an indicated mean effective pressure, converting the indicated mean effective pressure to a manifold pressure, and converting the manifold pressure to the throttle area.

Abstract: A method and apparatus for converting a desired torque to a throttle area to generate the desired torque in an internal combustion engine including the steps of converting the desired torque to an air per cylinder value, converting the desired torque to an indicated mean effective pressure, converting the indicated mean effective pressure to a manifold pressure, and converting the manifold pressure to the throttle area.