Fuel tank venting system and an additional filter element...

Details Fuel tank venting system and an additional filter element... Fuel tank venting system and an additional filter element...

2007-03-06

2007-03-06

Lawrence, Frank M. (Department: 1724)

Gas separation: apparatus

Solid sorbent apparatus

Plural solid sorbent beds

C096S134000, C096S153000, C502S416000

Reexamination Certificate

active

10771712

ABSTRACT:
Described is an additional filter element for a filter apparatus for reducing emissions from a motor vehicle tank venting system. The additional filter element is connected to a main activated carbon filter and has adsorbents which, to achieve a high working capacity, in particular at 42° C., has a high micropore volume. To retain a residual loading possibly present in the micropores the adsorbents further have a mesopore volume. The micropore volume is at least 0.4 cm3/g and the mesopore volume is at a maximum 0.95 cm3/g.

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