Automobile Engineering in ME
A three way catalytic converter

Re-circulates exhaust gases
Burns fuel vapour gases
Removes CO, HC, and NO₂ from the exhaust gases passing through it
Reduces N₂, H₂O, and CO₂ emission levels

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Automobile Engineering in ME
The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

Enable the pump's fault diagnosis function to operate
Supplies a large amount of fuel and thereby creates a choke effect
Warm up and lubricate the pump
Pressurise the fuel system before the engine is started

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