Equivalent Consumption Minimization Strategy for a Power Split Supercharger University of Michigan-Ann Arbor

Format:

Book

Conference/Event

Author/Creator:

Nazari, Nazari, author.

Contributor:

Middleton, Robert

Siegel, Jason

Stefanopoulou, Anna

Conference Name:

WCX SAE World Congress Experience (2019-04-09 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2019

Summary:

AbstractLow voltage hybridization (<60 V) supports engine start/stop, regenerative braking, and constrained torque assist/regeneration at a low cost. This work studies the potential benefits of a novel hybrid system, called a power split supercharger (PSS). A 9 kW motor is shared between boosting the engine or providing hybrid functionalities, allowing it to couple with a small engine and still support good acceleration. However, the PSS operation is limited to only one of the parallel hybrid or boosting modes at each time instance. In this work an equivalent consumption minimization strategy (ECMS) is developed to select the PSS mode and the motor torque during hybrid mode. The PSS operation is simulated over standard EPA drive cycles with an engine mean value model that captures detailed air path and PSS dynamics. The results show that on the combined cycle the PSS improves the vehicle fuel economy by around 20% compared to a vehicle with a turbocharged engine, which is more than 90% of the fuel economy improvement previously predicted through a dynamic programming global fuel economy optimization

Notes:

Vendor supplied data

Publisher Number:

2019-01-1207

Access Restriction:

Restricted for use by site license