Engine speed elevation reduces the detection error of combustionphase because of the correspondingly strengthened signal.
当转速升高时，信号幅值有所提高，从而导致了燃烧相位检测误差的降低。
2
The results indicate that proper combustionphase retarding can reduce acoustic intensity significantly and maintain the performance and emissions.
结果发现通过适当的着火延迟可以有效地降低声响强度，同时保证性能和排放基本不变。
3
The simulation suggested that the mixing with high-cetane fuel and high-octane fuel can influence the combustionphase and cylinder pressure in HCCI combustion.