Closed-loop combustion control of biodiesel–diesel blends in premixed operating conditions enabled via high exhaust gas recirculation rates

摘要: Stringent emissions and fuel economy regulations motivate the investigation of advanced combustion strategies such as premixed charge compression ignition. However, controlling ignition is challenging there no direct trigger for event. In addition, fuel-flexible applications must account impact variable properties on proces. This paper identifies control challenges in presents a strategy mitigating differences phasing, increases nitrogen oxide emissions, decreases power output typically encountered when operating with biodiesel conditions. When used conditions engine stock calibration diesel fuel, timing start peak heat release can shift by over 2° crank angle 4° respectively, ...