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Ciclo EPA

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ivanfm
Mensagens: 1760
Registrado em: Qua Abr 18, 2018 12:41 pm
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Ciclo EPA

Mensagem por ivanfm »

Da agencia de Energia americana, tem base no SAE J1634 (o mesmo que o Brasil escolheu utilizar)

Existem alguns pontos de interpretação no SAE J1634 e variações na aplicação (é possível utilizar um redutor diferente dos 30% padrão), além das variações de ciclo urbano, estrada, longo, curto....

  • https://www.arenaev.com/comparison_of_n ... ws-419.php

    • "For example, Porsche Taycan’s EPA range is barely over 200 miles while owners and car tests indicate that the car is capable of going at least 25% longer. The opposite happens with Tesla Model S, which normally can't get near its official EPA rating because of the adjustment factor that Tesla uses for its model which is based on a different interpretation of the SAE J1634 standard."
  • https://www.caranddriver.com/features/a ... e-numbers/

    • "The default adjustment factor reduces the window-sticker range by 30 percent. So a car that achieves 300 miles of range during the city-cycle dynamometer test ends up with a 210-mile city rating. However, the EPA allows automakers the option to run three additional drive cycles and use those results to earn a more favorable adjustment factor. Currently, only Tesla and Audi employ this strategy for their EVs, and Tesla scores the most advantageous results, with adjustments that range from 29.5 percent on the Model 3 Standard Range Plus to 24.4 percent on the Model Y Performance. If Tesla had used the standard adjustment factor of 30 percent, the Model Y Performance's window-sticker range would drop to 292 miles. But because Tesla takes advantage of the EPA's alternate methodology, the company can instead claim a 315-mile range."
  • Aqui cita um artigo SAE que não esta mais disponível

    • https://sites.google.com/site/nwpriuspl ... c-vehicles
      "A five-cycle method for electric cars, to develop Wh/gal numbers, does not exist at this time, so automakers instead can apply an EPA alternative, a correction factor that caps at 30% (reduction) to city/highway, even past 2010... The manufacturers use the petroleum energy-content-equivalent of 33,705 W·h/gal, then dyno-test for Wh/mi and apply the 30% reduction to city and highway." Paul Weissler, from SAE Regulations/Standards,
      "
Anexos
CFR-2021-title40-vol32-part600.pdf
(9.74 MiB) Baixado 57 vezes
Draft_Summary_EPA_test_procedure_for_EVs-PHEVs-11-14-2017.pdf
(122.98 KiB) Baixado 49 vezes
2022-generic-ev-label-calculator-10-26-2021.xlsm
(651.22 KiB) Baixado 48 vezes
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