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A Comparative Study of Hydraulic Hybrid Systems for Class 6 Trucks
Technical Paper
2013-01-1472
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to reduce fuel consumption, companies have been looking at hybridizing vehicles. So far, two main hybridization options have been considered: electric and hydraulic hybrids. Because of light duty vehicle operating conditions and the high energy density of batteries, electric hybrids are being widely used for cars. However, companies are still evaluating both hybridization options for medium and heavy duty vehicles. Trucks generally demand very large regenerative power and frequent stop-and-go. In that situation, hydraulic systems could offer an advantage over electric drive systems because the hydraulic motor and accumulator can handle high power with small volume capacity. This study compares the fuel displacement of class 6 trucks using a hydraulic system compared to conventional and hybrid electric vehicles. The paper will describe the component technology and sizes of each powertrain as well as their overall vehicle level control strategies. The fuel consumption will be evaluated on several driving cycles. The paper will then recommend specific powertrain configurations (i.e., hydraulic vs. electric hybrids) depending on specific driving conditions.
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Citation
Kim, N. and Rousseau, A., "A Comparative Study of Hydraulic Hybrid Systems for Class 6 Trucks," SAE Technical Paper 2013-01-1472, 2013, https://doi.org/10.4271/2013-01-1472.Also In
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