Challenges and Opportunities in Adoption of Hybrid Technologies in Medium and Heavy Duty Applications

Minarcin, Monika; Rask, Eric; Smith, Matthew

doi:10.4271/2011-01-2251

Cited by 10 publications

(2 citation statements)

References 7 publications

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“…However, typically for long-haul trucks, fuel savings of 7-8% are needed to justify commercial adoption [28]. This has led some of the major HD manufacturers, including Peterbilt, Volvo, and ArvinMeritor, to offer Class 8 hybrid trucks only for very specific markets [29][30][31][32]. Most HD hybrid trucks utilize parallel hybrid configurations, in line with studies that show significant benefits compared to series hybrid trucks [1,28].…”

Section: Introductionmentioning

confidence: 99%

The evaluation of developing vehicle technologies on the fuel economy of long-haul trucks

Gao

Smith

Daw

et al. 2015

Energy Conversion and Management

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We present fuel savings estimates resulting from the combined implementation of multiple advanced energy management technologies in both conventional and parallel hybrid class 8 diesel trucks. The energy management technologies considered here have been specifically targeted by the 21 st Century Truck Partnership (21 CTP) between the U.S. Department of Energy and U.S. industry and include advanced combustion engines, waste heat recovery, and reductions in auxiliary loads, rolling resistance, aerodynamic drag, and gross vehicle weight. We estimate that combined use of all these technologies in hybrid trucks has the potential to improve fuel economy by more than 60% compared to current conventional trucks, but this requires careful system integration to avoid nonoptimal interactions. Major factors to be considered in system integration are discussed.

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Section: Introductionmentioning

confidence: 99%

The evaluation of developing vehicle technologies on the fuel economy of long-haul trucks

Gao

Smith

Daw

et al. 2015

Energy Conversion and Management

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“…This is mainly because implementation of hybrid technology into a HD truck implies a complex integration of mechanical and electric propulsion systems (18). It requires not only the optimized combination of engine, after-treatment devices, motor and battery, and drivetrain, but also the understanding of comprehensive operational data for the power demanded from a HD vehicle, including auxiliary loads, aerodynamic drag, rolling resistance, and drivetrain losses (18,19). Thus, developing an accurate modeling capacity that can accurately evaluate the interactions among battery energy, emissions control, and power demands (including auxiliary loads) and correctly determine the fuel efficiency and emissions in HD hybrids is critical for successful development of commercially viable products and systems.…”

Section: Literature Review Of Hybrid Fuel Economymentioning

confidence: 99%

Exploring Fuel-Saving Potential of Long-Haul Truck Hybridization

Gao

LaClair

Smith

et al. 2015

Transportation Research Record: Journal of the Transportation R

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Comparisons are reported on the simulated fuel economy for parallel, series, and dual-mode hybrid electric long-haul trucks, in addition to a conventional powertrain configuration, powered by a commercial 2010-compliant 15-L diesel engine over a freeway-dominated heavy-duty truck driving cycle. The driving cycle was obtained by measurement during normal driving conditions. The results indicated that both parallel and dual-mode hybrid powertrains were capable of improving fuel economy by 7% to 8%. However, there was no significant fuel economy benefit for the series hybrid truck because of internal inefficiencies in energy exchange. When reduced aerodynamic drag and tire rolling resistance were combined with hybridization, there was a synergistic fuel economy benefit for appropriate hybrids that increased the fuel economy benefit to more than 15%. Long-haul hybrid trucks with reduced aerodynamic drag and rolling resistance offered lower peak engine loads, better kinetic energy recovery, and reduced average engine power demand. Thus, it is expected that hybridization with load reduction technologies offers important potential fuel energy savings for future long-haul trucks.

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