重型氢燃料点火式内燃机涡轮增压系统的选择

Francesco Pucillo, Federico Millo, A. Piano, Sergio Giordana, Nicola Rapetto, Fabio Paulicelli
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摘要

如今,绿色氢能可在成功的清洁能源转型中发挥关键作用,从而实现交通领域的净零排放。此外,氢气在内燃机中的应用因其合适的燃烧特性和准零污染物排放而受到青睐。高火焰速度可实现稀薄燃烧,从而提供高效率并减少氮氧化物排放。然而,要达到重型应用的典型负荷水平,就需要较高的气流速率。在此框架下,本研究旨在通过一维数值模拟,研究 6 缸 13 升重型火花点火发动机所需的增压系统。本研究对涡轮增压系统的各种结构和每个组件的大小进行了比较,从而突出了每种结构的局限性和潜力,并为选择最佳涡轮增压系统提供了重要启示。
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Turbocharging System Selection for a Hydrogen-Fuelled Spark-Ignition Internal Combustion Engine for Heavy-Duty Applications
Nowadays, green hydrogen can play a crucial role in a successful clean energy transition, thus reaching net zero emissions in the transport sector. Moreover, hydrogen exploitation in internal combustion engines is favored by its suitable combustion properties and quasi-zero pollutant emissions. High flame speeds enable a lean combustion approach, which provides high efficiency and reduces NOx emissions. However, high airflow rates are required to achieve the load levels typical of heavy-duty applications. In this framework, the present study aims at investigating the required boosting system of a 6-cylinder, 13-litre heavy-duty spark ignition engine through 1D numerical simulation. A comparison among various architectures of the turbocharging system and the size of each component is presented, thus highlighting the limitations and potentialities of each architecture and providing important insights for the selection of the best turbocharging system.
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