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Cycle-by-Cycle Analysis of HC Emissions During Cold Start of Gasoline Engines
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English
Abstract
A cycle-by-cycle analysis of HC emissions from each cylinder of a four-stroke V-6, 3.3 L production engine was made during cold start. The HC emissions were measured in the exhaust port using a high frequency flame ionization detector (FID). The effect of the initial startup position of the piston and valves in the cycle on combustion and HC emissions from each cylinder was examined. The mass of fuel injected, burned and emitted was calculated for each cycle. The equivalence ratio of the charge in the firing cycles was determined. The analysis covered the first 120 cycles and included the effect of engine transients on HC emissions.
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Citation
Henein, N., Tagomori, M., Yassine, M., Asmus, T. et al., "Cycle-by-Cycle Analysis of HC Emissions During Cold Start of Gasoline Engines," SAE Technical Paper 952402, 1995, https://doi.org/10.4271/952402.Also In
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