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Design Under Uncertainty and Assessment of Performance Reliability of a Dual-Use Medium Truck with Hydraulic-Hybrid Powertrain and Fuel Cell Auxiliary Power Unit
Oakland University, Rochester.
University of Cyprus, Nicosia.
University of Michigan.
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2005 (English)In: 2005 SAE world congress: Detroit, Michigan, April 11 - 14, 2005, Warrendale, Pa: Society of Automotive Engineers, Incorporated , 2005Conference paper (Refereed)
Abstract [en]

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

Place, publisher, year, edition, pages
Warrendale, Pa: Society of Automotive Engineers, Incorporated , 2005.
, SAE Technical Paper Series, ISSN 0148-7191
URN: urn:nbn:se:ltu:diva-38883DOI: 10.4271/2005-01-1396Local ID: d6d15900-fdaa-41c8-b612-c8eb96ecaa69OAI: diva2:1012385
SAE World Congress : 11/04/2005 - 14/04/2005
Uppr├Ąttat; 2011; 20110822 (andbra)Available from: 2016-10-03 Created: 2016-10-03

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