CONTROL GASOLINE PARTIALLY PREMIX COMBUSTION BY DUAL INJECTION STRATEGY AND EXHAUST GAS RECIRCULATION

Abstract

The characterization of combustion is an important role in the economic,
technical, and emission factors of internal combustion engines. Recently, gasoline
partially premix combustion (GPPC) have been researched, developed, and
applied in engine to improve efficiency and reduce harmful emission. This paper
studies the control of partial pre-mixed combustion by dual injection strategy
combined with exhaust gas recirculation (EGR). The results showed that, with the
fixation of the first injection at -35 CAD, adjusting the second injection timing at
the change from -9 CAD to 0 CAD combined with combination with exhaust gas
recirculation fundamentally changes the characteristics of the combustion
process, heat release, and combustion efficiency. These are the basis for
optimizing the working process of the engine.