Title: Power management strategies for a series hydraulic hybrid drivetrain

Authors: Sisay Molla, Beshah Ayalew

Addresses: CNH, 6900 Veterans Blvd, Burr Ridge, IL 60527-5640, USA. ' Clemson University – International Center for Automotive Research, 4 Research Dr., 342 CGEC, USA Greenville, SC 29607, USA

Abstract: This paper presents implementation details for two optimisation-based energy management strategies for a series hydraulic hybrid drivetrain. The first strategy is a causal, real-time implementable instantaneous consumption minimisation strategy that requires minimal information about future loads on the system. The second strategy is a non-causal but formally trip-optimal power allocation scheme involving Dynamic Programming (DP). Both strategies are applied to a medium duty urban truck featuring independent hydrostatic wheel drives and fuel economy results are compared to those obtained with a commonly cited real-time implementable, rule-based power management strategy.

Keywords: hydraulic hybrid drivetrains; dynamic programming; equivalent consumption minimisation; power management; optimisation; energy management; power allocation; medium duty trucks; urban trucks; independent hydrostatic wheel drives; fuel economy.

DOI: 10.1504/IJPT.2011.041911

International Journal of Powertrains, 2011 Vol.1 No.1, pp.93 - 116

Received: 12 Jan 2011
Accepted: 11 May 2011

Published online: 26 Feb 2015 *

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