Question
a) Using engine efficiency and tailpipe emission trends, discuss briefly why Sl engines operate near stoichiometric charge conditions. b) How is SCR (selective catalytic reduction)
a) Using engine efficiency and tailpipe emission trends, discuss briefly why Sl engines operate near stoichiometric charge conditions.
b) How is SCR (selective catalytic reduction) different to LNT (lean NOx trap)? (5 marks) R 1.00 7 = 1.4
c) Using the thermal efficiency of Otto and Diesel cycles, briefly discuss why diesel engines usually have better fuel economy than petrol engines. 0.8 Diesel cycle o=1 Otto cycle)
1.0- = 1.4 0.8 Diesel cycle (Otto cycle) 0.6 0.4 Increasing load 0.2 1 5 13 17 21 25 Compression ratio.r,
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a Internal combustion engine exhaust gas emissions depend heavily on the airfuel ratio equivalence factor For a gasoline engine CO HC and NOx exhaust gas emissions are heavily influenced by airfuel ra...
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Fundamentals Of Taxation 2015
Authors: Ana Cruz, Michael Deschamps, Frederick Niswander, Debra Prendergast, Dan Schisler, Jinhee Trone
8th Edition
1259293092, 978-1259293122, 1259293122, 978-1259293092
