Air/Fuel Ratio Flashcards
0
Q
14:7:1 ratio
A
HC and CO levels fall, NOx increases, close to peak power and efficiency, temperature at max and NOx peaks
1
Q
Consequence of low air/fuel ratio
A
Rich mixture combustion poor, u burnt HCs and high CO, low temperature -> low NOx BUT poor power output
2
Q
Moving leaner
A
NOx and CO reduced but flame ignition and propagation efficiency not good which leads to unburnt fuel
3
Q
VOC (hydrocarbons and oxygenated/chlorinated derivatives)
A
Health risk, photochemical smogs to ozone, carcinogenicity of compounds e.g. Benzene and 1.3 butadiene.