Design under uncertainty and assessment of performance reliability of a dual-use medium truck with hydraulic-hybrid powertrain and fuel cell auxiliary power unit
Louca, Loucas S.
Delagrammatikas, G. J.
SourceSAE Technical Papers
Google Scholar check
MetadataShow full item record
Medium trucks constitute a large market segment of the commercial transportation sector, and are also used widely for military tactical operations. Recent technological advances in hybrid powertrains and fuel cell auxiliary power units have enabled design alternatives that can improve fuel economy and reduce emissions dramatically. However, deterministic design optimization of these configurations may yield designs that are optimal with respect to performance but raise concerns regarding the reliability of achieving that performance over lifetime. In this article we identify and quantify uncertainties due to modeling approximations or incomplete information. We then model their propagation using Monte Carlo simulation and perform sensitivity analysis to isolate statistically significant uncertainties. Finally, we formulate and solve a series of reliability-based optimization problems and quantify tradeoffs between optimality and reliability. The most relevant design parameters of the diesel engine, fuel cell, driveline and vehicle are considered. The results demonstrate the necessity for addressing uncertainty to make valid assessments and design decisions. Copyright © 2005 SAE International.
Showing items related by title, author, creator and subject.
Preservice elementary teachers as information and communication technology designers: An instructional systems design model based on an expanded view of pedagogical content knowledge Angeli, Charoula; Valanides, Nicos (2005)This study discusses the evolution of an instructional systems design (ISD) model that is based on an expanded view of Shulman's concept of pedagogical content knowledge (PCK). An initial model was evaluated in the first ...
Constantinou, Marios; Karekla, Maria (PAPAZISI Publications, 2015)
Dimitriou, Loukas; Stathopoulos, Antony (2007)