Passive evaporative emission control module

摘要

An emission control module ( 14 ) includes a housing ( 52 ) that includes an atmospheric air opening ( 102 ) and a vapor emission inlet ( 104 ) for communication with a vapor region ( 32 ) of a fuel reservoir ( 16 ). A hydrocarbon filter ( 56 ) is disposed between the atmospheric air opening ( 102 ) and the vapor emission inlet ( 104 ) to passively filter vapor emissions within the vapor region ( 32 ). The housing ( 52 ) is configured for purging of the hydrocarbon filter ( 56 ) due to a low-pressure draw from the vapor emission inlet ( 104 ).