Complex sentence: The amount of fuel drawn into the engine is much lower than a typical gasoline engine which operates at 14.7:1, the chemical stoichiometric ideal for complete combustion when averaging gasoline to be the petrochemical industries' accepted standard of C6H8.
Split into simpler sentences: The amount of fuel drawn into the engine is much lower than a typical gasoline engine which operates at 14.7:1. That being the chemical stoichiometric ideal for complete combustion when averaging gasoline to be the petrochemical industries' accepted standard of C6H8.