Which risk increases when adjusting the equivalence ratio far from stoichiometry in a catalytic converter?

💡 Explanation

Reduced NOX conversion of hydrocarbons occurs when equivalence ratio deviates from stoichiometry because the reaction equilibirum shifts due to insufficient oxygen which inhibits the reduction of NOX; therefore the conversion becomes less effective rather than more so, and other reactions are less favorable.

• Which outcome occurs when a binary eutectic alloy solidifies non-equilibrium conditions?
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