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供油提前角对柴油机的性能有很大影响。供油过早不但造成发动机工作粗暴,增加压缩负功,使油耗增高、功率下降;而且还造成怠速不稳和起动困难。供油过晚则燃烧拖后,热量利用不好,并使排气温度增加。传热损失增大,也使油耗增高,功率下降。所以对于每一种工况,柴油机都有一个最佳的供油提前角,以使发动机获得最小油耗和最大功率。最佳供油提前角的确定,应当在发动机试验台上作供油提前角调整特性来确定。如果没有台架试验的条件怎么办?一些来稿提供了他们的实际经验。下面选登“最佳供油时间的调试方法”一文供参考。
Fuel advance angle on the performance of diesel engines have a great impact. Premature oil supply not only caused the rude work of the engine, increase the compression negative work, so that fuel consumption increased, power decline; but also caused instability idle and starting difficulties. The fuel is too late to burn, the heat is not well utilized, and the exhaust temperature is increased. Heat transfer loss increases, but also to increase fuel consumption, power decline. Therefore, for each operating condition, the diesel engine has an optimum fuel supply advance angle so that the engine can achieve the minimum fuel consumption and the maximum power. The determination of the best fuel supply advance angle, should be made on the engine test bench for oil advance angle adjustment characteristics to determine. What to do if there are no bench test conditions? Some contributions provide their practical experience. The following election “” the best way to debug the fuel supply "a text for reference.