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Well-to-Wheel analysis of natural gas fuel for hybrid truck applications

机译：用于混合卡车应用的天然气燃料的井到车轮分析

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摘要

Following the tendency of sustainable development, compressed natural gas as an alternative fuel has been expanded applied in the transportation sector these years. Although several studies on the life cycle are quite comprehensive for passenger vehicles, it is problematic to apply these results to heavy-duty electric hybrid trucks. This study applies the Well-to-Wheel methodology on compressed natural gas fuel. The optimized hybrid electric truck model is built up to minimize the truck performance variation. The total CO2 equivalent emissions and the methane leakage as indicators are compared among the three largest emitting countries. The results indicate that compressed natural gas-based hybrid trucks have 9.1%-18.7% less CO2 equivalent emissions than diesel-based ones and the results are more obvious for heavy-duty trucks. Nevertheless, this advantage may be minimized by methane leakage, particularly in the recovery process, accounted for 7.3% Total CO2 equivalent emissions increase in North America, 5.1% in Europe, 5.3% in China from well to wheel. Applying natural gas in hybrid electric trucks does have environmental benefits. Methane capturing and compression efficient improving can be the faster ways to help reach the emission reduction target.
机译：遵循可持续发展的趋势，这些年来，压缩天然气作为替代燃料的扩大在运输部门中已经扩展。虽然对乘用车的乘客循环的几项研究非常全面，但将这些结果应用于重型电动混合卡车是有问题的。本研究适用于压缩天然气燃料上的井轮方法。建立了优化的混合动力电动卡车模型，以最大限度地减少卡车性能变化。在三个最大的排放国家比较了总二氧化碳等效排放和甲烷泄漏。结果表明，压缩的天然气的混合动力卡车比柴油基于柴油的排放量减少了9.1％-18.7％，而重型卡车的结果比较明显。然而，这种优势可以通过甲烷泄漏最小化，特别是在恢复过程中，北美总共二氧化碳当量排放量增加7.3％，欧洲5.1％，从而为车轮提供5.3％。在混合动力电动卡车中涂抹天然气确实具有环境效益。甲烷捕获和压缩效率改善可能是有助于降低减排目标的速度更快。

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