Gm Global Technolgoy Operations, Inc.

Other

Sai Rajagopalan

Chandra S Namuduri

Suresh Gopalakrishnan

Chen-Fang Chang

Michael Livshiz

Anthony L Smith

Jin-Woo Lee

Venkata Prasad Atluri

Yiran Hu

Kenneth Paul Dudek

Stephen Yurkovich

Shawn Midlam-Mohler

Xiaoyu Huang

Yann G Guezennec

Nathan F Thompson

Sharon Liu

Patrick James O'Leary

Kevin J Robinet

A vehicle propulsion system includes a combustion engine configured to output a propulsion torque to satisfy a propulsion demand, and a traction electric machine to generate a supplemental torque to selectively supplement the propulsion torque. The propulsion system also includes a controller programmed to forecast an acceleration demand based on at least one estimation model. The controller is also programmed to issue a command indicative of a required axle torque corresponding to the acceleration demand. The controller is further programmed to engage at least one fuel conservation action in response to the required axle torque being within a first predetermined torque threshold range.

Hybrid vehicle propulsion systems and methods

An electric-vehicle power management system including a processing hardware unit and multiple modules executable by the processing hardware unit. The modules include a calendar module configured to, by way of the processing hardware unit, obtain a user itinerary indicating multiple appointment locations to be visited by a user of an electric vehicle and associated times to visit the appointment locations. The modules also include a routing module configured to, by way of the processing hardware unit, determine optional routes connecting the appointment locations indicated by the itinerary, and a vehicle-energy module configured to, by way of the processing hardware unit, predict states of charge, or changes in state of charge, for the vehicle in connection with the optional routes, yielding state-of-charge predictions. The routing module determines selected routing based on the state-of-charge predictions from the vehicle-energy module. Analogous methods and computer-readable storage devices are also provided.

Vehicle power management utilizing operator schedule data

A fuel control system of an engine includes a simulation module and a control module. The simulation module generates a simulated pre-catalyst exhaust gas oxygen (EGO) sensor signal based on a simulated oxygen concentration of an exhaust gas. The simulation module determines a simulated pre-catalyst equivalence ratio (EQR) for the exhaust gas based on the simulated pre-catalyst EGO sensor signal. The control module generates a desired pre-catalyst EGO sensor signal based on a desired oxygen concentration of the exhaust gas. The control module determines a desired pre-catalyst EQR based on the desired pre-catalyst EGO sensor signal. The control module determines a cost function based on the simulated pre-catalyst EQR and the desired pre-catalyst EQR. The fuel control system is calibrated based on the cost function.

Off-line calibration of universal tracking air fuel ratio regulators

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Bloomfield Hills, MI, United States of America

Sai Rajagopalan