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首页> 外文会议>ASME Internal Combustion Engine Division fall technical conference 2010 >DIESEL ENGINE OPERATION USING AMMONIA AS A CARBON-FREE FUEL
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DIESEL ENGINE OPERATION USING AMMONIA AS A CARBON-FREE FUEL

机译：使用氨作为无碳燃料的柴油发动机操作

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Ammonia combustion does not produce carbon dioxide and thus can be regarded as a carbon-free fuel. Ammonia was used as a fuel in a compression-ignition engine in this study. Vapor ammonia was introduced into the engine intake port, and diesel fuel was injected directly into the cylinder to initiate combustion. This dual-fuel approach was chosen because ammonia has a high resistance to autoignition. A liquid ammonia tank was used for fuel storage and a high pressure relief valve regulated the ammonia flow rate, and ignition was controlled by diesel fuel injection. Ammonia was used as an energy replacement for diesel fuel. The results showed that the peak engine torque could be achieved by using different combinations of diesel fuel and ammonia. During testing, a maximum energy replacement of 95% was measured. It should be noted that, if more ammonia is added, a higher than rated power can be achieved depending on engine load conditions. It was also shown that CO_2 emissions were reduced monotonically for the same engine torque output as the amount of the ammonia in the fuel mixture increased. Additionally, burning ammonia in engines does not necessarily increase NOx emissions despite the fuel-bound nitrogen. Lower levels of NOx emissions were obtained as long as energy substitution by ammonia did not exceed 60%. This is thought to occur because of the lower combustion temperature of ammonia.
机译：氨燃烧不会产生二氧化碳，因此可以视为无碳燃料。在这项研究中，氨被用作压燃式发动机的燃料。蒸气氨被引入发动机进气口，柴油被直接喷入气缸以开始燃烧。选择这种双燃料方法是因为氨对自燃具有很高的抵抗力。使用液氨罐进行燃料存储，并通过高压溢流阀调节氨流量，并通过柴油喷射控制点火。氨被用作柴油的能源替代品。结果表明，通过使用柴油和氨气的不同组合可以达到峰值发动机扭矩。在测试过程中，测得最大能量替代率为95％。应该注意的是，如果添加更多的氨，则取决于发动机负载条件，可以获得高于额定功率的功率。还显示出，对于相同的发动机扭矩输出，随着燃料混合物中氨气含量的增加，CO_2排放量会单调减少。另外，尽管燃料与氮结合，但在发动机中燃烧氨并不一定会增加NOx排放。只要用氨替代的能量不超过60％，就能获得较低的NOx排放量。认为这是由于氨的燃烧温度较低而发生的。

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