非增压四冲程双燃料发动机(改装)的性能

On Power Behaviour of Four-Stroke Double-Fuel Motor

目前国内外双燃料发动机以气体燃料运转断的标定功率低于以液体燃料运转时的标定功率。在循环供热量保持不变的条件下,标定功率降低的原因在于标定转速下的混合气过稀。故在设计时应校正标定转速下的混合气成分,使两种燃料具有同样的动力性能。文中还提出简单可靠的热力学计算方法。

The four-stroke donble--fuel motor, when in a runningcondition, has a lower rated power when using gas fuel thanwhen using fluid fuel. The author says that if the circulatingheat capacity is kept stable the reason for the lower ratedpower will be that mixed gas under rated rotational speed istoo thin. The author affirms that in order to get the samepower capacity from gas or fluid, the composition of themixed gas under rated rotational speed must be corrected.