Garrett Transportation I Inc.

Daniel Youssef

Jaroslav Pekar

Matej Pcolka

Martin Herceg

David Vosahlik

Kamil Dolinsky

Bohumil Hnilicka

Methods and systems for operating a hybrid vehicle having a first power source that uses a rechargeable battery and a second power source that uses a fuel. Preview information relating to upcoming road and traffic is used to generate a speed reference. A transmission torque reference is calculated using the speed reference and upcoming road information. A predictive power split plan is then determined by optimizing use of the first and second power sources to satisfy the transmission torque reference. At least a first sample of the predictive power split plan is then implemented.

Energy efficient predictive power split for hybrid powertrains

Methods and systems for surge control in a compressor system. A recirculation valve position may be actuated in response to identified conditions of potential surge, determined from a compressor map. Recirculation valve position may be controlled by calculating distance of current operating state to a surge line and using proportional integral control to manage the distance. Compressor speed command may be derated in response to identified surge, determined from one of speed fluctuations of the compressor speed, or variance of a compressor speed tracking error.

Methods and systems of compressor control with surge avoidance and response

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Brno, Czechia

Daniel Youssef