Fca US LLC

Other

Shu Wang

William P Attard

David A Lawrence

Ethan E Bayer

Tyler Tutton

Young Cheul Yoon

Hussein A Dourra

Shuonan Xu

Michael Barkey

Michael J Prucka

Ken Hardman

Suk Woo Lee

Manvinder Singh

Qilun Zhu

Srinath Gopinath

Robert Gary Prucka

Sang Gook Kim

Li-Hsiang Sun

A system and method of controlling a powertrain to protect a high voltage cable by determining a temperature characteristic for a busbar, determining a temperature characteristic adjacent to a component, and determining a current through the high voltage cable. Thereafter, the method reduces an operating characteristic of the powertrain based on the temperature characteristic for the busbar, the temperature characteristic adjacent to the component, and the current.

High voltage harness thermal monitor and power management system

A control system and method for controlling an engine comprising an electric turbocharger are presented. The system comprises a wastegate valve configured to control a pressure of exhaust gas in an exhaust system of the engine at a turbine of the electric turbocharger. A controller obtains a set of parameters that each affect exhaust gas energy; using the set of parameters: (i) determines a target mass flow into the engine and a target boost for the turbocharger to achieve a torque request; (ii) determines a target power for a compressor of the turbocharger to achieve the target engine mass flow and the target turbocharger boost; (iii) determines an electric turbocharger motor power target; (iv) determines, based on the target power for the compressor and the electric turbocharger motor power target, a target pressure ratio and a target mass exhaust flow for the turbine of the electric turbocharger.

Power-based electric turbocharger boost control

Techniques for controlling a forced-induction engine having a low pressure cooled exhaust gas recirculation (LPCEGR) system comprise determining a target boost device inlet pressure for each of one or more systems that could require a boost device inlet pressure change as part of their operation and boost device inlet pressure hardware limits for a set of components in the induction system, determining a final target boost device inlet pressure based on the determined sets of target boost device inlet pressures and boost device inlet pressure hardware limits, and controlling a differential pressure (dP) valve based on the final target boost device inlet pressure to balance (i) competing boost device inlet pressure targets of the one or more systems and (ii) the set of boost device inlet pressure hardware limits in order to optimize engine performance and prevent component damage.

Differential pressure valve based boost device inlet pressure optimization

A calibration system and method for a spark ignition engine of a vehicle involve artificially weighting engine dynamometer data in high engine load regions and using it to generate training data for an artificial neutral network (ANN). A plurality of ANNs are trained using the training data and the plurality of ANNs are then filtered based on their maximum error to obtain a filtered set of trained ANNs. A statistical analysis is performed on each of the filtered set of trained ANNs including determining a set of statistical metrics for each of the filtered set of trained ANNs and then one of the filtered set of trained ANNs having a best combination of error at high engine loads and the set of statistical error metrics is then selected. Finally, an ANN calibration is generated using the selected one of the filtered set of trained ANNs.

Using an artificial neural network for combustion phasing control in a spark ignited internal combustion engine

Systems and methods for a turbocharged engine comprising an exhaust gas recirculation (EGR) valve and an EGR valve differential pressure sensor disposed in a low pressure EGR (LPEGR) system of the engine and a differential pressure (dP) valve that is distinct from a throttle valve and a dP valve outlet pressure sensor disposed in an induction system of the engine utilize a controller configured to, based on the sensed pressures, determine (i) a modeled pressure at the EGR pickup, (ii) a modeled pressure at outlet of an EGR cooler, (iii) a modeled pressure at an outlet of an air filter and (iv) a modeled pressure at the dP valve outlet, and control the dP valve and the EGR valve based on the modeled EGR pickup pressure, the modeled EGR cooler outlet pressure, the modeled air filter outlet pressure, and the modeled dP valve outlet pressure.

Techniques for modeling and adaptation of gas pressures in a low pressure exhaust gas recirculation system of a turbocharged gasoline engine

Systems and methods for a turbocharged gasoline engine utilize a controller configured to receive a set of parameters including a measured pressure delta across an exhaust gas recirculation (EGR) valve disposed in a low pressure EGR (LPEGR) system of the engine and a measured pressure at an outlet of a differential pressure (dP) valve disposed in and distinct from a throttle valve of an induction system of the engine. The controller is further configured to determine a set of modeled pressures based on the set of parameters, a target EGR valve mass flow, a target EGR valve delta pressure, a current dP valve mass flow, and a pressure at an outlet of the air filter, determine target positions for the EGR valve and the dP valve based on the set of modeled pressures, and control the EGR valve and the dP valve based on their respective target positions.

Robust low pressure exhaust gas recirculation system control for a turbocharged gasoline engine

Systems and methods for a turbocharged gasoline engine utilize an exhaust gas concentration sensor disposed upstream from an exhaust gas recirculation pickup point of a low pressure EGR (LPEGR) system of the engine and a controller configured to receive a measured air/fuel ratio of the exhaust gas from the sensor, determine an air/fuel ratio of the exhaust gas at the EGR pickup point, determine an air/fuel ratio of the exhaust gas at an inlet and outlet of an EGR cooler, determine first/second sets of exhaust gas fractions and fuel fractions upstream/downstream from an EGR port that is upstream from a compressor in an induction system of the engine, and control at least one of a wastegate valve, a throttle valve, a fuel injector, and a spark plug based on the sets of second exhaust gas fractions and fuel fractions to prevent misfires of the engine.

Techniques for tracking exhaust gas constituents through a low pressure exhaust gas recirculation system of a turbocharged gasoline engine

Systems and methods of controlling operation of a vehicle engine are provided. For instance, one example aspect of the present disclosure is directed to determining a spark timing associated with a combustion engine. For instance, a combustion phasing target to be implemented by a combustion engine can be received. A spark timing associated with the combustion engine can be determined based at least in part on the combustion phasing target. The spark timing can be determined based at least in part on an optimization comprising one or more iterations determined during an engine cycle. The spark timing is determined based at least in part on a combustion phasing prediction model determined based at least in part on at least one of laminar flame speed, residual gas mass, or turbulent intensity.

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Rochester Hills, MI, United States of America

Shu Wang