Abstract:This
paper involved conducting an experimental investigation on the effects of exhaust
gas recirculation (EGR) and spark timing on the combustion, performance,
and emission characteristics of a China-VI heavy-duty, natural gas
engine fueled with high-methane content. The results showed that increasing
the EGR rate extends the spark timing range and slows the combustion.
This then increases ignition delay, prolongs combustion duration,
and decreases heat release rate. Peak in-cylinder pressure (PCP) and
indicat… Show more
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