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Particulate Matter Emissions and the Role of Catalytic Converter During Cold Start of GDI Engine
Technical Paper
2010-01-2122
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This work aimed to study nano-scale particulate matter originating from gasoline direct injection engine during cold start and warm up operating conditions and to identify the role of the three-way catalytic converter on nano-scale particulate during cold-start and warm-up operating conditions. This work used a 4-stroke, 1.6 litre, wall guided gasoline direct injected, turbocharged and intercooled SI engine equipped with a three-way catalytic converter for this investigation. It used a fast particle spectrometer for the measurement of exhaust nano-scale particles upto 1000 nm diameter. This work identified that about 98% of the particles during cold-start are in the size range below 25 nm diameter; the particle count during cold-start measured upstream of the catalytic converter is three orders of magnitude higher than the downstream measurement; the difference observed for the particles in the size range 5-25 nanometer diameter seems to follow the trend of the conversion characteristics of CO in the catalytic converter during the warm-up period at low load and low speed engine operating conditions.
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Citation
Samuel, S., Hassaneen, A., and Morrey, D., "Particulate Matter Emissions and the Role of Catalytic Converter During Cold Start of GDI Engine," SAE Technical Paper 2010-01-2122, 2010, https://doi.org/10.4271/2010-01-2122.Also In
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