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首页> 外文期刊>The International Journal of Environmental Studies >Natural gas fuelling for heavy-duty on-road use: current trends and future direction
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Natural gas fuelling for heavy-duty on-road use: current trends and future direction

机译：重型道路使用天然气燃料：当前趋势和未来方向

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The use of natural gas as an alternative fuel offers the potential for significant benefits, including lower engine-out emissions compared to conventional fuels. Most in-use heavy-duty natural gas engines use a premixed charge of fuel and air which is then ignited by a spark plug. While these systems meet current emissions standards, substantial further reductions are required to meet upcoming regulations. Efficiency penalties due to poor fuel utilization at low load with such premixed charge engines are also a concern. As a result, there is scope for further research into potential improvements to natural gas-fuelled heavy-duty engines, especially through direct injection. This work reviews the various alternatives, both in-use and under development, for fuelling a heavy-duty engine with natural gas. The emphasis is placed on providing an understanding of the performance of current heavy-duty natural gas fuelled engines and improvements that future technologies may offer. The need for further fundamental and applied research, both computational and experimental, is also identified.
机译：使用天然气作为替代燃料具有潜在的显着优势，与传统燃料相比，包括更低的发动机排放。大多数使用中的重型天然气发动机使用燃料和空气的预混合装料，然后由火花塞点燃。尽管这些系统符合当前的排放标准，但仍需要进一步降低排放量以符合即将出台的法规。由于这种预混合增压发动机在低负荷下燃料利用率差而导致的效率损失也是一个问题。因此，仍有潜力进一步研究天然气燃料重型发动机的潜在改进，特别是通过直接喷射。这项工作对使用天然气为重型发动机供油的各种使用和开发中的替代方案进行了回顾。重点放在提供对当前重型天然气燃料发动机的性能以及未来技术可能提供的改进的理解上。还确定了对进一步的基础研究和应用研究（包括计算和实验）的需求。

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