Different source, different purpose:Airflow said:Yes indeed, a Saab speciality! I've another one - won't make anyone guess this time - it's EBD = Electronic Brake-force Distribution.
And isn't PCV also sometimes known as EGR = Exhaust Gas Recirculation (although less so in the Saab world), or is EGR something distinct from it?
PCV recycles all of the blowby gas from the crankcase because it is too dirty to vent.
EGR recycles some of the gas from the exhaust manifold to reduce the oxygen content in the cylinder. This lowers combustion temperature, decreasing the formation of nitrogen oxides.