EMISSION CONTROL SYSTEM - Quiz

1) When does a fresh charge escapes from the petrol engine exhaust?

During valve lead During valve open During valve lag During valve overlap

2) Which type of fuel is recommended for catalytic converter installed engines?

Leaded petrol Unleaded petrol High speed diesel Low speed diesel

3) Which reaction is irrelevant to the 3 way catalytic converters?

NO<sub>X</sub> N<sub>2</sub> + CO<sub>2</sub> Co HC H<sub>2</sub>O + CO<sub>2</sub> O<sub>2</sub> CO H<sub>2</sub>O + CO O<sub>2</sub> C CO<sub>2</sub> O<sub>2</sub>

4) Which type of the emission control system that blow by gases are feed in to the inlet manifold of a running engine?

Exhaust gas recirculation Crank case ventilation Positive crank case ventilation Catalytic convention

5) Which controls the EGR valve in modern vehicle?

Engine vacuum controlled valve Vacuum regulated valve Linear electronic controlled valve Solenoid controlled valve