Nonlinear dynamics of cycle-to-cycle variations in a lean-burn natural gas engine with a non-uniform pre-mixture

Analysis of cold-start NO2 and NOx emissions, and the NO2/NOx ratio in a diesel engine powered with different diesel-biodiesel blends

“…Given that this study aims to investigate the effect of engine temperature and fuel properties on NOx, NO2 and the NO2/NOx ratio at different stages of the engine warm-up period, it was opted to use an engine with no after-treatment systems (e.g. EGR, SCR, DPF) so that the emissions are not dependent on such devices (type and performance) to better analyse the actual engine and combustion dependent emissions [47,48]. This experimental investigation used a turbocharged Cummins ISBe220 engine.…”