In a filter consisting of hollow cylindrical open-pore ceramic foam cylinder elements and an end plate made of gas-impermeable material, as an insert in a filter cup for cleaning exhaust gases of diesel engines, in which the exhaust gases flow through the active filter section essentially perpendicularly...http://www.google.es/patents/US4894074?utm_source=gb-gplus-sharePatente US4894074 - Filter for cleaning exhaust gases of diesel engines
Filter for cleaning exhaust gases of diesel engines
