Natural gas HCCI engine operation with exhaust gas fuel reforming
Natural gas HCCI engine operation with exhaust gas fuel reforming
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DOI：
10.1016/j.ijhydene.2005.06.002
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发表时间：
2006-04
影响因子：
7.2
通讯作者：
D. Yap;S. Peucheret;A. Megaritis;M. Wyszyński;Hongming Xu
中科院分区：
文献类型：
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作者：
D. Yap;S. Peucheret;A. Megaritis;M. Wyszyński;Hongming Xu
天然气具有高自燃温度，需要高压缩比和/或进气加热以实现均质充量压缩点火（HCCI）发动机操作。这里示出了重整气体形式的氢气有助于降低稳定HCCI操作所需的进气温度。已经表明，氢的添加提前了气缸中燃烧的开始。这是由于在压缩冲程期间发生自动点火所需的最低进气温度降低，从而导致对于相同进气温度的提前燃烧。本文记录了使用闭环废气燃料重整制氢的实验结果。当该重整气体被引入发动机中时，对于一定范围的发动机负载，观察到进气温度要求降低。因此，对于给定的进气温度，可以实现较低的发动机负荷。对于给定的进气温度，这将转化为HCCI较低负荷边界的延伸。
Natural gas has a high auto-ignition temperature, requiring high compression ratios and/or intake charge heating to achieve homogenous charge compression ignition (HCCI) engine operation. It is shown here that hydrogen in the form of reformed gas helps in lowering the intake temperature required for stable HCCI operation. It has been shown that the addition of hydrogen advances the start of combustion in the cylinder. This is a result of the lowering of the minimum intake temperature required for auto-ignition to occur during the compression stroke, resulting in advanced combustion for the same intake temperatures. This paper documents experimental results using closed loop exhaust gas fuel reforming for production of hydrogen. When this reformed gas is introduced into the engine, a decrease in intake air temperature requirement is observed for a range of engine loads. Thus for a given intake temperature, lower engine loads can be achieved. This would translate to an extension of the HCCI lower load boundary for a given intake temperature.