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介绍的方法是在喷油嘴中两个燃料层之间充填水,并分层喷入燃烧室。在NO开始生成之前将水喷入燃烧室,那末通过有针对性的供水就可理想地降低NO排放。着火滞后期应避免喷水,以便压力上升速度保持在允许的极限内。阐明了最佳的喷水时间间隔和喷水量。分层喷水并不影响燃油耗。随着转速的升高、负荷的增大和喷水始点的延迟,水对降低NO排放的效果将变得更显著。分层喷水时,试验负荷区的炭烟、CO和HC的排放量基本保持不变。
The method described is to fill the fuel between two fuel layers in a fuel injector and inject it in layers into the combustion chamber. By injecting water into the combustion chamber prior to the start of NO, NO emissions are ideally reduced by targeted water supplies. Ignition should be avoided in the lag period so that the rate of pressure rise remains within the allowable limits. Clarified the best sprinkler time interval and water spray volume. Stratified water does not affect the fuel consumption. As the speed increases, the load increases and the starting point of the water jet delays, the effect of water on reducing NO emissions will become more pronounced. When stratified water spraying, the emission of soot, CO and HC in the test load area basically remained unchanged.