试验结果表明在30度左右喷油提前角时综合油耗最低。
The experimental results showed that about 30 degrees of injection angle gave the lowest consumption of fuel.
供油提前角增大时，最大放热率降低，对应相位提前，后燃减少。
With the fuel supply advance Angle increasing, the maximum heat release rate decreases, its corresponding phase advances, and the after combustion is shorter.
主要采取了提高压缩比、改变点火提前角及采用进气脉冲增压技术。
The major technologies used include increasing compression ratio, changing spark advance Angle and using intake pulse turbo-charging.
但由于提前角减小，排气背压增大，发动机燃油消耗率上升8%左右。
But because of reduced injection timing and increased exhaust back pressure, the BSFC of the engine will be increased of 8%.
本文提出了一种柴油机供油提前角电液调节系统，建立了动态数字模型。
In this paper, a new control system of an electro-hydraulic fuel injection advancer is presented and its dynamic mathematical model is developed.
本文研究了发动机压缩比和点火提前角对液化石油气发动机性能的影响。
The research discussed the influence of compression ratio and ignition advanced angle to performance of LPG engine.
其次，分析了电控系统的控制策略，包括空燃比控制和点火提前角控制。
Secondly, the control strategy of Electronic control System is analyzed, including fuel-air ratio control and ignition advance Angle control.
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。
After a self adaptive ignition unit is applied, the ignition advance Angle of the engine is automatically changed according to different fuels.
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。
Soot formation can be restrained hence the emission of soot can be decreased with the increased injection advance Angle.
介绍了一种以单片机为主要部件的汽油发动机点火提前角测量和控制系统。
This paper presents a measuring and controlling system of ignition advance for gasoline engines, it is composed mainly of a monolithic processor.
本文对点火提前角和空燃比对发动机的性能影响作了较为深入的理论研究。
Influence of engine performance with ignition advance and air-fuel ratio was discussed and studied in detail.
结果表明，相同条件下：柴油机存在一个最佳喷油提前角使碳烟排放最少；
The result show that, under the same condition:the diesel engine has a best injection timing which makes the emission of soot least.
首次系统地研究了供油提前角、喷嘴启喷压力对E30混合燃料发动机性能的影响。
It's the first time to question extensively the influences of fuel delivery advance Angle and injection pressure on performance of E30 engine.
根据点火模型确定点火提前角MAP图，并在台架实验中采用在线修改系统进行优化。
Ignition advance Angle MAP is obtained by calculating ignition model. The MAP is optimized by on line tune up system in the bench test.
在此基础上设计了点火提前角控制器的软件和硬件，做了高压缩比的LPG发动机试验。
The hardware and software of ignition advanced angle controller are designed in this base. LPG engine with high compression ratio had been tested.
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。
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.
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。
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.
计算结果表明，选择合适的压缩比、喷油提前角，可以改善缸内的燃烧过程，降低燃油消耗率。
The calculation result indicates that choose the appropriate compression ratio, the Angle of fuel injection can improve the cylinder burn and reduce the fuel exhaust.
一开始这玩意儿扮演像是领头炮的角色，上面装着两具瞄准镜，一具管提前角另一具管瞄准目标。
This was at first a pair of master gun sights that were offset by the necessary lead angles and sighted on the target.
供油提前角相同时，两者额定工况的放热率图都呈单峰，前者最大爆发压力和最大压力升高率较低。
At the rated power, the HRR for each engine has only one peak, peak pressure and rate of pressure rise for DME engine is lower comparatively.
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。
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.
研究了电控LPG发动机的催化转化器安装位置、点火提前角和怠速转速对催化转化器快速起燃的影响。
The effects of converter position, ignition timing and idle speed on catalytic converter light-off behavior were studied on an electronically controlled LPG injection engine.
研究了环境温度，过量空气系数，蓄电池电压，点火提前角对单循环冷起动时，起动转速和排放的影响。
The effects of environment temperature, excess air ratio, storage battery voltage on start speed and emissions are studied.
为保证柴油机燃烧完全并提高功率和节省能源，在日常维护保养中一定要注意检查各缸的最佳喷油提前角。
To guarantee complete burning, raise power and save energy, you must check oil-injecting advanced Angle for every cylinder during daily maintenance.
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。
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.
发动机在非爆震区域工况下，其最佳点火提前角为初始点火提前角、基本点火提前角和修正点火提前角之和。
When worked in non-knock conditions, the most optimum spark angle is the adder of the initial spark angle, the basic ignition angle and the amendment spark angle.
试验结果表明：多次点火有助于提高点火可靠性，特别在点火提前角过大或过小、空燃比偏离最佳点火比例时。
The results show that the multi-time ignition can improve ignition reliability, especially when ignition timing is too advance or too late, or air fuel ratio is far from the best ratio of ignition.
结果表明点火提前角的自动调节对怠速稳定性的控制效果明显，CMAC控制器能有效地用于发动机怠速控制。
The results showed that the adjustment by spark advance angle on the idling speed was notable, thus, CMAC controller is an effective approach for controlling engine idling speed.
在一台单缸直喷式柴油机上开展了不同喷油提前角下燃用柴油和柴油-丙烷混合燃料时的燃烧和排放特性研究。
Effects of fuel injection timing on combustion and emission characteristics of a single-cylinder diesel engine fuelled with diesel and diesel-propane blends were studied.
在一台单缸直喷式柴油机上开展了不同喷油提前角下燃用柴油和柴油-丙烷混合燃料时的燃烧和排放特性研究。
Effects of fuel injection timing on combustion and emission characteristics of a single-cylinder diesel engine fuelled with diesel and diesel-propane blends were studied.
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