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Hydraulic/electric synergy system (HESS) design for heavy hybrid vehicles

Sun Hui, Yang Lifu and Jing Junqing

Energy, 2010, vol. 35, issue 12, 5328-5335

Abstract: Energy storage source is one of the key factors constraining the development of hybrid drive technology. Single energy storage source is difficult to satisfy the hybrid vehicle’s requirements for both energy density and power density. This paper presents a hydraulic/electric synergy system (HESS) for heavy hybrid vehicles to overcome the existing drawbacks of single energy storage source. The key components in the synergy system are sized to improve the fuel economy potential while satisfying the vehicle performance constraints. In order to achieve optimal fuel economy, energy control strategy tailored specially to the synergy system is designed to manage the power distribution between multiple energy sources based on theirs characteristics. The experiments and simulations demonstrate that the proposed synergy system can provide good fuel economy and overall system efficiency.

Keywords: Heavy vehicles; Hybrid energy sources; Energy control strategy; Hydraulic accumulator; Battery (search for similar items in EconPapers)
Date: 2010
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