Gm Global Technolgoy Operations, Inc.

Jeremy J Anderson

Vijay A Ramappan

Jonathan T Shibata

Martino A Casetti

Sharon Xiaobin Li

Jan Fritzsche

A system includes a soot module, a coordinator module, a regeneration module, and actuator modules. The soot module determines a current amount of soot mass in a particulate filter of a gasoline engine, where the particulate filter is downstream from the gasoline engine and receives an exhaust gas from the gasoline engine. The coordinator module generates an enable signal, a torque reserve signal, and an equivalence ratio. The regeneration module, based on the current amount of soot mass and the enable signal, generates a regeneration signal to regenerate the particulate filter. The actuator modules, based on the regeneration signal, the torque reserve signal and the equivalence ratio, retard spark and increase an amount of air flow to the particulate filter. The actuators maintain a same amount of torque out of the gasoline engine during regeneration as output from the gasoline engine prior to the regeneration of the particulate filter.

Systems for regeneration of a gasoline particulate filter

A system for controlling an engine based on piston temperature deviation includes a piston temperature estimation module that estimates a piston temperature based on engine operating conditions, a piston temperature deviation estimation module that estimates a deviation of the estimated piston temperature from a steady-state piston temperature, and an engine control module that determines an engine control parameter based upon the estimated piston temperature deviation.

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Royal Oak, MI, United States of America

Jeremy J Anderson