A Study of Energy Losses in the World's Most Fuel Efficient Vehicle

Grady, Patrick; Chen, Gerry; Verma, Shomik; Marellapudi, Aniruddh; Hotz, Nico

doi:10.1109/vppc46532.2019.8952212

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…The optimal driving strategy found was very similar to the strategy start-stop in which the engine is turned off when the speed is maximum and reconnected only when it is minimal. The world's most fuel-efficient vehicle used a start-stop-like driving strategy when it set the world record at SEM Americas 2018 (Grady et al, 2019). However, in the optimal case, these values differed in the first, last, and other turns.…”

Section: Resultsmentioning

confidence: 99%

Optimal Control of Battery Electric Vehicle in Energy Efficiency Competitions

Barbosa¹,

Campos²,

Dutra³

2020

XXVII Congresso Nacional De Estudantes De Engenharia Mecânica

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Resumo. Em competições de eficiência energética, como a Shell Eco-marathon (SEM), os veículos devem consumir a menor quantidade de energia em um trajeto fixo com tempo máximo determinado. Dois dos principais fatores que influenciam o consumo de energia de um veículo são a estratégia de direção e a relação de transmissão. O objeto deste estudo é defini-los de forma a minimizar o consumo de um protótipo elétrico para a SEM Americas 2019. A partir do modelo matemático desenvolvido para a dinâmica do veículo elétrico e das restrições da SEM foi proposto um problema de controle ótimo. Este problema foi solucionado computacionalmente. O consumo simulado para a estratégia ótima foi 3 vezes menor que o consumo na SEM Americas 2019. Sugerimos que o tempo gasto seja o máximo permitido e que o motor seja ligado nos apenas nos trechos de aclive.Palavras chave: Shell Eco-marathon, problema de controle ótimo, estrategia de direção, relação de transmissão.

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Section: Resultsmentioning

confidence: 99%

Optimal Control of Battery Electric Vehicle in Energy Efficiency Competitions

Barbosa¹,

Campos²,

Dutra³

2020

XXVII Congresso Nacional De Estudantes De Engenharia Mecânica

View full text Add to dashboard Cite

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Cooperation of a PEM fuel cell and a NiMH battery at various states of its charge in a FCHEV drive

Pielecha¹,

Szwajca²

2021

Eksploatacja i Niezawodność – Maintenance and Reliability

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The development of electromobility is focused on the design and implementation of increasingly more effective electric drives. In such a system, apart from energy recovery, it is not possible to recharge the batteries while driving. Electric vehicles equipped with fuel cells and a battery (FCHEV – fuel cell hybrid electric vehicle) in a parallel configuration boast increased energy transfer capabilities. The article presents an energy flow analysis in a parallel hybrid drive system with fuel cells and a battery. The research was carried out on a 30 W vehicle made in 1:10 scale with a NiMH battery and a fuel cell with a proton exchange membrane (PEM). Increasing driving dynamics causes a 29% increase in energy consumption, 43.6% reduction of energy transfer from a fuel cell and a 23% increase of in the energy share intended for battery charging. Continuous operation of the system in full power mode ensures a much greater efficiency of energy transmission to the drive train (95%) compared to the system operating in dynamic driving conditions – 64–75%.

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A Study of Energy Losses in the World's Most Fuel Efficient Vehicle

Cited by 2 publications

References 14 publications

Optimal Control of Battery Electric Vehicle in Energy Efficiency Competitions

Optimal Control of Battery Electric Vehicle in Energy Efficiency Competitions

Cooperation of a PEM fuel cell and a NiMH battery at various states of its charge in a FCHEV drive

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