Abstract: Apparatuses, methods and systems for hybrid powertrain control are disclosed. Certain example embodiments control an internal combustion engine and a motor/generator of a hybrid electric powertrain. Example controls may determine a total output demanded of a powertrain based at least in part upon an operator input, a battery output target based upon a battery state of charge and independent of the operator input, and an engine output target based upon the total output demanded and the battery output target. Such example controls may further determine a constrained engine output target, a modified battery output target based upon the total output demanded and the constrained engine output target, and a constrained battery output target based upon the modified battery output target and a battery constraint. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and figures.

Abstract: Unique apparatuses, systems, methods, and techniques for control of engine systems are disclosed. One embodiment is a unique controls process providing engine start/stop functionality. In one form, the controls process includes engine stop controls which evaluate a plurality of engine stop request conditions and a plurality of engine stop capability conditions, as well as engine start controls which evaluate a plurality of engine start request conditions and a plurality of engine start capability conditions.

Abstract: Unique apparatuses, systems, methods, and techniques for control of engine systems are disclosed. One embodiment is a unique controls process providing engine start/stop functionality. In one form, the controls process includes engine stop controls which evaluate a plurality of engine stop request conditions and a plurality of engine stop capability conditions, as well as engine start controls which evaluate a plurality of engine start request conditions and a plurality of engine start capability conditions.

Abstract: Apparatuses, methods and systems for hybrid powertrain control are disclosed. Certain example embodiments control an internal combustion engine and a motor/generator of a hybrid electric powertrain. Example controls may determine a total output demanded of a powertrain based at least in part upon an operator input, a battery output target based upon a battery state of charge and independent of the operator input, and an engine output target based upon the total output demanded and the battery output target. Such example controls may further determine a constrained engine output target, a modified battery output target based upon the total output demanded and the constrained engine output target, and a constrained battery output target based upon the modified battery output target and a battery constraint. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and figures.

Abstract: A system includes a hybrid power train comprising an internal combustion engine and electrical system, which includes a first and second electrical torque provider, and an electrical energy storage device electrically coupled to first and second electrical torque provider. The system further includes a controller structured to perform operations including determining a power surplus value of the electrical system; determining a machine power demand change value; in response to the power surplus value of the electrical system being greater than or equal to the machine power demand change value, operating an optimum cost controller to determine a power division for the engine, first electrical torque provider, and second electrical torque provider; and in response to the power surplus value of the electrical system being less than the machine power demand change value, operating a rule-based controller to determine the power division for the engine, first, and second electrical torque provider.

Abstract: A method includes operating a hybrid power train having an internal combustion engine and at least one electrical torque provider. The method further includes determining a machine power demand for the hybrid power train, and determining a power division between the internal combustion engine and the electrical torque provider in response to the machine power demand. The method further includes determining a state-of-charge (SOC) of an electrical energy storage device electrically coupled to the at least one electrical torque provider and interpreting a target SOC for the electrical energy storage device in response to a vehicle speed, and determining an SOC deviation for the electrical storage device, wherein the SOC deviation comprises a function of a difference between the SOC of the electrical energy storage device and the target SOC of the electrical energy storage device.

Abstract: A method includes operating a hybrid power train having an internal combustion engine and an electrical torque provider. The method further includes determining a machine power demand and, in response to the machine power demand, determining a power division description. The method includes operating the internal combustion engine and the electrical torque provider in response to the power division description. The method further includes operating the internal combustion engine by starting the internal combustion engine in response to determining that a battery state-of-charge is below a predetermined threshold value.

Abstract: A method includes operating a hybrid power train having an internal combustion engine and an electrical torque provider. The method further includes determining a machine power demand and an audible noise limit value for the internal combustion engine. The method includes determining a power division description in response to the machine power demand and the audible noise limit value, and operating the internal combustion engine and the electrical torque provider in response to the power division description.

Abstract: A system includes a hybrid power train including an engine, a first electrical torque provider, and a second electrical torque provider. The system further includes a load mechanically coupled to the hybrid power train. The hybrid power train further includes a clutch coupled to the engine and the second electrical torque provider on a first side, and coupled to the first electrical torque provider and the load on a second side. The system further includes an electrical energy storage device electrically coupled to the electrical torque providers. The system further includes a controller that performs operations to smooth torque commands for the engine and the second electrical torque provider in response to determining that a clutch engage-disengage event occurring or imminent.

Abstract: A method includes operating a hybrid power train having an internal combustion engine, at least one electrical torque provider, and an electrical energy storage device electrically coupled to the electrical torque provider(s). The method further includes determining a machine power demand, and determining a power division description in response to the machine power demand. The method further includes interpreting a state-of-health (SOH) for the electrical energy storage device, and in response to the SOH for the electrical energy storage device, adjusting the power division description.

Abstract: A method includes operating a hybrid power train having an internal combustion engine and an electrical torque provider. The method further includes determining a machine power demand and an audible noise limit value for the internal combustion engine. The method includes determining a power division description in response to the machine power demand and the audible noise limit value, and operating the internal combustion engine and the electrical torque provider in response to the power division description.

Abstract: A system includes a hybrid power train including an engine, a first electrical torque provider, and a second electrical torque provider. The system further includes a load mechanically coupled to the hybrid power train. The hybrid power train further includes a clutch coupled to the engine and the second electrical torque provider on a first side, and coupled to the first electrical torque provider and the load on a second side. The system further includes an electrical energy storage device electrically coupled to the electrical torque providers. The system further includes a controller that performs operations to smooth torque commands for the engine and the second electrical torque provider in response to determining that a clutch engage-disengage event occurring or imminent.

Abstract: A system includes a hybrid power train comprising an internal combustion engine and electrical system, which includes a first and second electrical torque provider, and an electrical energy storage device electrically coupled to first and second electrical torque provider. The system further includes a controller structured to perform operations including determining a power surplus value of the electrical system; determining a machine power demand change value; in response to the power surplus value of the electrical system being greater than or equal to the machine power demand change value, operating an optimum cost controller to determine a power division for the engine, first electrical torque provider, and second electrical torque provider; and in response to the power surplus value of the electrical system being less than the machine power demand change value, operating a rule-based controller to determine the power division for the engine, first, and second electrical torque provider.

Abstract: A method includes determining a machine shaft torque demand and a machine shaft speed, in response to the machine shaft torque demand and the machine shaft speed, determining a machine power demand, determining a power division description between an internal combustion engine, a first electrical torque provider, and a second electrical torque provider, determining a hybrid power train configuration as one of series and parallel, determining a baseline power division description in response to a vehicle speed and the machine power demand, determining a state-of-charge (SOC) deviation for an electrical energy storage device electrically coupled to the first electrical torque provider and the second electrical torque provider, and adjusting the baseline power division description in response to the SOC deviation and the hybrid power train configuration.

Abstract: A method includes defining an application operating cycle and a number of behavior matrices for a hybrid power train that powers the application, each behavior matrix corresponding to operations of the hybrid power train operating in a parallel configuration. The method includes determining a number of behavior sequences corresponding to the behavior matrices and applied sequentially to the application operating cycle, confirming a feasibility of each of the behavior sequences, determining a fitness value corresponding to each of the feasible behavior sequences, in response to the fitness value determining whether a convergence value indicates that a successful convergence has occurred, and in response to determining that a successful convergence has occurred, determining a calibration matrix in response to the behavior matrices and fitness values. The method includes providing the calibration matrix to a hybrid power train controller.

Abstract: A method includes manufacturing a first assembly having an application requirements module that interprets a contemporaneous performance specification, and an energy partitioning module that provides an electric motor torque target, a battery power flux target, and an internal combustion engine torque target. The method further includes manufacturing a second assembly having an engine control module that controls an internal combustion engine in response to the internal combustion engine torque target. The method includes integrating the first assembly and the second assembly with a third assembly to form a completed hybrid power train, where the third assembly includes a datalink that receives the internal combustion engine torque target from the first assembly and provides the internal combustion engine torque target to the second assembly.

Abstract: A method, apparatus, and system are disclosed for hybrid power system braking. In one embodiment, a vehicle weight input is received by a brake controller. In response to receiving the vehicle weight input, a maximum negative braking torque is determined. Regulation of negative braking torque according to vehicle weight is accomplished by one or both of a regenerative braking device and mechanical braking device.

Abstract: A system includes a hybrid power train having a combustion torque device, an electrical torque device, a driveline mechanically coupled to the torque devices, a battery that exchanges energy with the driveline, and a torque input device that provides a torque request. The hybrid power train is at least partially parallel. The system includes a controller having modules to execute operations for rate control of the hybrid power train. A battery protection module determines a battery protection charge rate limit, a power train protection module determines a power train protection torque change limit, and a torque request module determines the torque request. A rate control module provides a torque balance parameter in response to the limits and the torque request. A torque control module provides an electrical torque and a combustion torque to the driveline in response to the torque balance parameter.

Abstract: A method, apparatus, and system are disclosed for hybrid power system braking. In one embodiment, a vehicle weight input is received by a brake controller. In response to receiving the vehicle weight input, a maximum negative braking torque is determined. Regulation of negative braking torque according to vehicle weight is accomplished by one or both of a regenerative braking device and mechanical braking device.

Abstract: A method includes determining a machine shaft torque demand and a machine shaft speed, in response to the machine shaft torque demand and the machine shaft speed, determining a machine power demand, determining a power division description between an internal combustion engine, a first electrical torque provider, and a second electrical torque provider, determining a hybrid power train configuration as one of series and parallel, determining a baseline power division description in response to a vehicle speed and the machine power demand, determining a state-of-charge (SOC) deviation for an electrical energy storage device electrically coupled to the first electrical torque provider and the second electrical torque provider, and adjusting the baseline power division description in response to the SOC deviation and the hybrid power train configuration.