In order to reduce cycle-to-cycle combustion phase fluctuations, a new control platform with functions of cylinder pressure acquisition, combustion states feedback, combustion control and engine control is developed. A novel Start of Combustion (SOC) detection algorithm based on the first derivative of the equivalent isentropic index is presented. Both next-cycle and in-cycle SOC control strategies are introduced. Experimental results demonstrate that the detection method is able to detect the real-time SOCs. The next-cycle control strategy according to the profiles of the heat release rate can control the SOC phase to its target and reduce cycle-to-cycle SOC phase fluctuations. The in-cycle control strategy can keep the consistency of the SOC phase of the main injection under different exhaust gas recirculation rates.
|Bidragets titel på inmatningsspråk||Real-time start of combustion feedback and control based on equivalent isentropic index|
|Tidskrift||Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)|
|Status||Published - 2020 jul 1|