Emission Control Systems (Opel Omega B)

All models are equipped with a crankcase gas collection system, a catalytic converter, an exhaust gas recirculation system and a fuel vapor collection system. Some models are equipped with an additional air supply system to reduce exhaust toxicity during engine warm-up.

CRANKCASE GASES COLLECTION SYSTEM

This system serves to collect crankcase gases and oil vapors from the engine crankcase and direct them into the engine intake tracts for combustion in subsequent engine operating cycles.

EMISSION TOXICITY REDUCTION SYSTEM

To reduce exhaust toxicity, all models are equipped with a catalytic converter. Information from the oxygen sensor installed in the exhaust manifold or inlet pipe of the exhaust system is used to precisely adjust the composition of the fuel mixture.

FUEL VAPOR COLLECTION SYSTEM

This system is used to collect fuel vapors from the fuel tank into a special carbon filter. From there they are then sent to the engine intake ports for subsequent combustion during normal engine operation.

EXHAUST GAS RECIRCULATION SYSTEM

This system is used to direct part of the exhaust gases into the engine intake tracts in order to reduce the CO content in the exhaust gases. The recirculation system valve is controlled by the electronic engine control unit.

ADDITIONAL AIR SUPPLY SYSTEM

An electric fan forces air into the exhaust manifold under certain engine operating conditions. This improves the combustion of hydrocarbons and increases the temperature of the exhaust gases. As a result, the catalytic converter warms up faster to the required temperature for neutralizing the exhaust gases.