Patent application number | Description | Published |
20090222189 | APPARATUS, SYSTEM, AND METHOD FOR DETERMINING A REGENERATION AVAILABILITY PROFILE - An apparatus, system, and method are disclosed for determining a regeneration availability profile for an exhaust gas aftertreatment system. The method, in one embodiment, tracks historical attempts and success to determine the availability of regeneration for the system. In a further embodiment, the method divides the system operation into segments according to desired conditions which affect regeneration, for example the workload of an engine, and tracks separate success ratios for each operating condition. This allows prediction of success of a given regeneration based upon the current operating condition, as well as diagnostics of regeneration problems where an operating condition experiences trouble regenerating when historically it should not. | 09-03-2009 |
20110072911 | System and Method for Estimating EGR Mass Flow Rates - A system and method are provided for estimating an instantaneous EGR mass flow rate corresponding to a flow rate of exhaust gas through an exhaust gas recirculation (EGR) conduit fluidly coupled between an exhaust manifold and an intake manifold of an internal combustion engine with an EGR cooler positioned in-line with the EGR conduit. An operating position of the engine is monitored, and the instantaneous EGR mass flow rate is estimated at each of a plurality of fixed increments of the engine position based on EGR cooler outlet temperature, intake manifold pressure and a pressure differential across a flow restriction disposed in-line with the exhaust gas conduit between the EGR cooler and the intake manifold. | 03-31-2011 |
20110154820 | ENGINE EXHAUST MANIFOLD PRESSURE CONTROL OF INTAKE FLOW - A method for controlling charge flow in an internal combustion engine includes operating an engine having a VGT. The method includes determining a target and current charge flow and EGR flow. The method further includes determining an error term for the charge flow and the EGR flow, and determining an exhaust pressure feedback command in response to the error terms. The exhaust pressure feedback command is combined with an exhaust pressure feedforward command, and the VGT is controlled in response to the exhaust pressure feedback command. The method additionally includes determining the exhaust pressure feedback command in response to a current EGR valve position. The method further includes controlling an EGR flow rate with the EGR valve at relatively closed EGR valve positions, and controlling the EGR flow rate with exhaust pressure at relatively open EGR valve positions. | 06-30-2011 |
20120046812 | HYBRID POWER TRAIN RATE CONTROL - 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. | 02-23-2012 |
20120090294 | CONTROL OF AFTERTREATMENT REGENERATION IN A HYBRID POWERED VEHICLE - A method for controlling aftertreatment regeneration for a system having a hybrid powertrain is described. The method includes determining that an engine aftertreatment regeneration is indicated when a regeneration request index exceeds a first threshold. The method includes determining an acceptable battery usage amount based on a current battery state of charge (SOC) and a minimum battery SOC. The method further includes determining a battery usage amount for an engine aftertreatment regeneration operation. The method includes initiating an engine aftertreatment regeneration when the battery usage amount is less than or equal to the acceptable battery usage amount. | 04-19-2012 |
20120090301 | SYSTEM, METHOD, AND APPARATUS FOR ENHANCING AFTERTREATMENT REGENERATION IN A HYBRID POWER SYSTEM - A method includes providing an internal combustion engine having an output shaft and producing an exhaust gas stream, providing an electric motor operatively coupled to the output shaft, and determining a regeneration state of an aftertreatment component that treats the exhaust gas stream. The method further includes determining an engine torque requirement such that, when the internal combustion engine achieves the engine torque requirement at a present set of operating conditions, a temperature of the exhaust gas stream will achieve an exhaust gas temperature threshold. The method further includes commanding the electric motor to apply a counter torque to the output shaft in response to the regeneration state indicating an active thermal regeneration event, where the counter torque comprises is high enough for the internal combustion engine to achieve the engine torque requirement. The exhaust gas temperature threshold may be a hold-warm temperature and/or a regeneration temperature. | 04-19-2012 |
20120158225 | HYBRID POWER TRAIN FLEXIBLE CONTROL INTEGRATION - A system includes a hybrid power train having an internal combustion engine and an electrical torque provider that combine to provide a total machine torque. The system includes a controller that functionally executes operations to control the hybrid power train. The controller interprets a total machine torque target value and determines a torque contribution for each of the internal combustion engine and the electrical torque provider in response. The controller interprets a supplemental torque contribution value, and controls the internal combustion engine and the electrical torque provider in response to the torque contributions and the supplemental torque contribution value. The supplemental torque contribution value is applied as a limiting value, a target value, or a prescribed ratio for one or both of the torque contributions. | 06-21-2012 |
20120173057 | HYBRID VEHICLE DRIVER COACH - An apparatus includes a deceleration definition module that interprets a target deceleration rate, a deceleration detection module that identifies a vehicle deceleration event, and a deceleration quality module that identifies a deceleration improvement opportunity in response to the target deceleration rate and the vehicle deceleration event. The apparatus further includes an operator feedback module that provides a specific operator guidance in response to the deceleration improvement opportunity. | 07-05-2012 |
20120173058 | MODULARIZED HYBRID POWER TRAIN CONTROL - 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. | 07-05-2012 |
20120173060 | HYBRID POWER SYSTEM BRAKING CONTROL - A method, apparatus, and system are disclosed for hybrid power system braking. In one embodiment, a deceleration input is received. In response to receiving the deceleration input, a target negative torque trajectory is determined. To achieve the target negative torque trajectory, a regenerative braking device and an electrical energy dissipation device are activated. | 07-05-2012 |
20120208672 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 08-16-2012 |
20120232730 | METHODS, SYSTEMS, AND APPARATUSES FOR DRIVELINE LOAD MANAGEMENT - A system includes a hybrid drive system having an internal combustion engine and a non-combustion motive power source. The system includes an energy storage system and a controller. The controller is structured to functionally execute operations to improve an efficiency of they hybrid drive system. The controller interprets duty cycle data, a boundary condition, and an optimization criterion. The controller further elects a load response operating condition in response to the duty cycle data, the boundary condition, and the optimization criterion. The controller adjusts the operation of the engine and/or the motive power source in response to the elected load response operating condition. | 09-13-2012 |
20120232731 | METHODS, SYSTEMS, AND APPARATUSES FOR DRIVELINE LOAD MANAGEMENT - A method includes interpreting a powertrain load variation amplitude and an internal combustion engine output profile. The method further includes determining an engine output differential in response to the powertrain load variation amplitude and the internal combustion engine output profile. The method further includes providing an energy accumulator sizing parameter and/or an alternate motive power provider sizing parameter in response to the engine output differential. | 09-13-2012 |
20130074492 | SYSTEM FOR CONTROLLING AN AIR HANDLING SYSTEM INCLUDING A DUAL-STAGE VARIABLE GEOMETRY TURBOCHARGER - A system is provided for controlling an air handling system for an internal combustion engine. A dual-stage turbocharger includes a high-pressure compressor and variable geometry turbine combination fluidly coupled to a low-pressure compressor and variable geometry turbine combination. A control circuit includes a memory having instructions stored therein that are executable by the control circuit to determine a target low-pressure compressor ratio, a target high-pressure compressor ratio, a target high-pressure compressor inlet temperature and a target high-pressure compressor inlet pressure as a function of a target outlet pressure of the high-pressure compressor and a temperature, a pressure and a target flow rate of air entering the air inlet of the low-pressure compressor, and to control the geometries of the low-pressure and high-pressure turbines as a function of the target low-pressure compressor ratio the target high-pressure compressor ratio respectively. | 03-28-2013 |
20130074495 | SYSTEM FOR CONTROLLING AN AIR HANDLING SYSTEM INCLUDING AN ELECTRIC MOTOR-ASSISTED VARIABLE GEOMETRY TURBOCHARGER - A system and method are provided for controlling an air handling system for an internal combustion engine including a turbocharger having a variable geometry turbine fluidly coupled to an exhaust manifold of the engine and a compressor fluidly coupled to an intake manifold of the engine, and an electric motor coupled to a rotatable shaft connected between the compressor and the variable geometry turbine. A target torque required to drive the compressor to achieve target compressor operating parameters is determined, a maximum available torque that can be supplied by the variable geometry turbine in response to a target exhaust gas flow through the variable geometry turbine is determined, and the electric motor is enabled to supply supplemental torque to the rotatable shaft if the target torque is greater than the maximum available torque. | 03-28-2013 |
20130074496 | SYSTEM FOR CONTROLLING AN AIR HANDLING SYSTEM INCLUDING AN ELECTRIC PUMP-ASSISTED TURBOCHARGER COMPRESSOR - A system and method are provided for controlling an air handling system for an internal combustion engine including a turbocharger having a variable geometry turbine and a compressor having a fresh air inlet fluidly coupled to ambient and to an air outlet of an electric air pump. An air pump enable value as determined a function of target engine speed and total fuel target values and an air flow target is determined as a function of a target fresh air flow value. Operation of the electric air pump is activated to supply supplemental air flow to the fresh air inlet of the compressor if the air pump enable value is greater than a threshold air pump enable value and the air flow target does not exceed a maximum flow value. | 03-28-2013 |
20130080034 | SYSTEM FOR CONTROLLING AN AIR HANDLING SYSTEM INCLUDING AN ELECTRIC PUMP-ASSISTED EXHAUST GAS RECIRCULATION - A system controlling an air handling system for an internal combustion engine. An EGR valve in-line with an EGR passageway fluidly coupled between exhaust and intake manifolds of the engine is controllable between fully closed open positions to control a flow rate of exhaust gas through the EGR passageway. A control circuit determines a pump enable value as a function of at least one of a target engine speed and a total fueling target, determines a maximum achievable flow rate of recirculated exhaust gas through the EGR passageway with the EGR valve in the fully open position, and activates an electric gas pump to increase the flow rate of exhaust gas through the EGR passageway if the pump enable value exceeds a threshold pump enable value and a target flow rate of recirculated exhaust gas through the EGR passageway is less than the maximum achievable flow rate. | 03-28-2013 |
20130133965 | VEHICLE BRAKING MANAGEMENT FOR A HYBRID POWER TRAIN SYSTEM - An exemplary system includes a vehicle having a drive wheel mechanically coupled to a drive shaft of a hybrid power train. The hybrid power train includes an internal combustion engine and an electric motor selectively coupled to the drive shaft. The internal combustion engine including a compression braking device. The system includes an electric generator selectively coupled to the drive shaft and coupled to an electrical storage device. The system includes a brake pedal position sensor that provides a braking request value. The system includes a controller configured to interpret the braking request value, a regenerative braking capacity, and a compression braking capacity. The controller is further configured to provide a regenerative braking command and a compression braking command in response to the braking request value, the regenerative braking capacity and the compression braking capacity. | 05-30-2013 |
20130184908 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20130184909 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20130184910 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20130184911 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20130184912 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20130184913 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20130184914 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 07-18-2013 |
20140214346 | ADAPTIVE AVAILABLE POWER ESTIMATION FOR HIGH VOLTAGE LITHIUM ION BATTERY - The present invention provides for a method and computer program product for estimating battery available power from a battery system in relation to a cell voltage, comprising: determining the cell voltage, a power command of the battery system; and a cell voltage threshold. The processes used by the present invention, include a static and a dynamic portion in which cell voltages, cell voltage thresholds and power command are associated and processed using a feed forward estimator and a proportional-integral-derivation (PID) controller to determine the final power command estimation for the requisite battery system. | 07-31-2014 |
20140222262 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 08-07-2014 |
20140222263 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 08-07-2014 |
20140222264 | SYSTEM, METHOD, AND APPARATUS FOR CONTROLLING POWER OUTPUT DISTRIBUTION IN A HYBRID POWER TRAIN - 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. | 08-07-2014 |