浅议二次喷射对直喷增压发动机超级爆震的影响

Effect of secondary injection on super knock of direct injection turbocharged engine

介绍了在中低转速大负荷区域不同燃油喷射策略对缸内温度、烟度、动力性能和排放等指标的影响。阐明了利用二次喷射的喷油控制策略不仅能降低缸内温度,同时可避免燃油喷射湿壁,并可最大限度地降低超级爆震发生的概率和频次。

It describes the effects of different fuel injection strategies on in-cylinder temperature, smoke, power performance and emissions in the region of low speed and high load, explaines that the injection control strategy with secondary injection can not only reduce the temperature in the cylinder, but also avoid the wet wall of fuel injection, and minimize the probability and frequency of super knock.