New PDF release: Automotive Exhaust Emissions and Energy Recovery

By Apostolos Pesiridis

ISBN-10: 1633214931

ISBN-13: 9781633214934

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After the commencement of Euro 4 the RPC scheme has been used to incentivise early introduction of the next legislation tier (both NOx and PM). The certificate lapses from the date when the relevant tier is mandated for all new vehicles. There then followed a requirement by the Mayor of London for a Low Emission Zone (LEZ) which mandated for PM emissions compliance in the whole of the greater London area for heavy duty vehicles. The following table summarises the timetable. Table 15. 5t Buses & Coaches > 5t GVW TfL Buses only Euro 4 None Euro 4 Euro 4 Similar exercises have been carried out elsewhere and one source claims that 250,000 vehicles worldwide have been retrofitted with a DPF.

In the last mechanism, the NOx formation is due to the oxidation of nitrogen contained in the fuel. This formation process is generally negligible as the natural nitrogen level in diesel fuel is low. PM is formed from the locally fuel rich mixture as a result of incomplete combustion. Incylinder particle formation is driven by the following processes: pyrolysis, nucleation, surface growth, coalescence and agglomeration [2]. The pyrolysis prevails in the first phase, in presence of high temperature without significant oxidation.

2012. Detailed characterization of particulate emissions of an automotive catalyzed DPF using actual regeneration strategies. Experimental Thermal and Fluid Science 39, 45–53. [20] Maricq, M. 2007. Chemical Characterization of Particulate Emissions from Diesel Engines: A Review. Aerosol Sci. 38, 1079–1118. , Lisbona, M. , and Tonetti, M. 2006.

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Automotive Exhaust Emissions and Energy Recovery by Apostolos Pesiridis

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