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77 Basic Investigation of Particulate Matters (O-PM)) and Polycyclic Aromatic Hydrocarbons Emitted by Two-stroke Motorcycles
Published October 29, 2002 by Society of Automotive Engineers of Japan in Japan
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Characteristics of mass emission of unburned Oil-Particulate Matter and polycyclic aromatic hydrocarbons from two-stroke scooter were investigated. The tests were carried out under with and without oxidation catalyst and various air-fuel ratio ranging from 12 to 16 at 50:1 of fuel-oil mixing ratio for easy sampling. Unburned Oil-Particulate Matter and 4- to 7-rings polycyclic aromatic hydrocarbons were trapped on filter. These compounds were analyzed by high performance liquid chromatography with fluorescence detector.
Mass emission of polycyclic aromatic hydrocarbons and unburned Oil-Particulate Matter tends to decrease as air-fuel ratio which increased up to stoichiometric ratio. The highest conversion ratio of unburned Oil-Particulate Matter on the oxidation catalyst was 64%. Conversion ratio of polycyclic aromatic hydrocarbons increased as rings are smaller. However, in one case of this test, some of 5-rings aromatic hydrocarbons or higher compounds showed a tendency to increase by the oxidation catalyst.
CitationSAKAI, T. and KASHIWAKURA, K., "77 Basic Investigation of Particulate Matters (O-PM)) and Polycyclic Aromatic Hydrocarbons Emitted by Two-stroke Motorcycles," SAE Technical Paper 2002-32-1846, 2002.
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