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1·It is shown that with adjusted ignition Angle of advance, larger compression ratio and appropriate preheating of the mixture, better fuel economy can be achieved.

指出调整点火提前角、提高压缩比以及适当预热混合气等，可以提高掺烧甲醇时燃油的经济性。

2·The test on the(influence) of changing fuel supply advance angle on fuel economy was carried out on single cylinder diesel engine separately using diesel fuel and ethanol-diesel blend fuel.

在单缸柴油机上分别使用纯柴油和乙醇柴油混合燃料，进行了改变供油提前角对发动机燃料经济性影响的试验。

3·The survey principle of a magneto ignition system ignition advance Angle was introduced.

本文介绍了磁电机点火系统的点火提前角测量原理。

4·The results show that at the same fuel delivery advance angle, engine speed and load, the line peak pressure and rate of pressure increment and decrement of DME are lower than that of diesel fuel.

试验结果表明：在供油提前角、转速和负荷相同的情况下，燃用二甲醚时油管泵端和嘴端压力的上升和下降速度、压力峰值都比燃用柴油时低；

5·Soot formation can be restrained hence the emission of soot can be decreased with the increased injection advance Angle.

增大供油提前角可以减少燃烧过程前期的碳粒生成量，进而降低碳粒排放。

6·After a self adaptive ignition unit is applied, the ignition advance Angle of the engine is automatically changed according to different fuels.

采用自适应燃料点火器可根据发动机使用燃料的不同自动改变点火提前角。

7·Two methods of determining ignition advance Angle are proposed according to different reference point, and the reason for this difference of the two methods are analyzed.

按参考点的不同，提出了两种确定点火提前角的方法，并分析了两种方法产生差别的原因。

8·The maximum network output error of fuel injection pulse width and ignition advance Angle is less than 1%, with an average error of less than 0.

喷油脉宽和点火提前角的网络输出最大误差小于1%，平均误差小于0。

9·Finally the calibration on a WF4C27F-E gasoline engine is performed, and the MAP graphs of the volumetric efficiency and the spark advance Angle are obtained.

最后针对WF4C 27 F - E汽油机进行了标定试验，获取了充量系数和点火提前角MAP图。

10·Finally, bench test was toke out on CNG engine, the influence of ignition advance Angle on dynamic and combustion characteristic was studied.

最后进行了天然气发动机台架实验，研究了点火提前角对发动机燃烧特性、排放性能的影响。