Influence of early and late fuel injection on air flow structure and kinetic energy in an optical SIDI engine
The turbulent in-cylinder air flow and the unsteady high-pressure fuel injection lead to a
highly transient air fuel mixing process in spark-ignition direct-injection (SIDI) engines, which
is the leading cause for combustion cycle-to-cycle variation (CCV) and requires further
investigation. In this study, crank-angle resolution particle image velocimetry (PIV) was
employed to simultaneously measure the air flow and fuel spray structure at 1300 rpm in an
optically accessible single-cylinder SIDI engine. The measurement was conducted at the …
highly transient air fuel mixing process in spark-ignition direct-injection (SIDI) engines, which
is the leading cause for combustion cycle-to-cycle variation (CCV) and requires further
investigation. In this study, crank-angle resolution particle image velocimetry (PIV) was
employed to simultaneously measure the air flow and fuel spray structure at 1300 rpm in an
optically accessible single-cylinder SIDI engine. The measurement was conducted at the …
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