Abstract: A spring compression plate (40), (46), (50), (60) for retaining the active material (28) that adsorbs fuel vapor in a fuel vapor storage canister (16). The plate (40), (46), (50), (60) has a wiper seal (44), (54), (68), (80) around its outer periphery that is capable of moving upwardly or downwardly within the shell body (34) of the canister (16) while maintaining substantial sealing to an inside portion of said shell body (34), thereby preventing leakage of the active material (28) when the canister (34) expands or contracts thermally. The spring compression plate (40), (46), (50), (60) is designed to maintain the integrity of the active material (28) over the lifetime of the vehicle in which it is placed. The spring compression plate (40), (46), (50), (60) also contains perforations (42) , (52), (66), (78) for allowing fuel vapor and air to freely flow through the canister (16).

Abstract: A fuel vapor adsorption brick for use in a fuel vapor management system. The fuel adsorption brick is formed of a mixture of activated carbon and plastic compressed to a desired size and shape and placed within a portion of either the fuel tank or fuel tank attachments. The carbon/plastic brick is easy to make and provides great geometric flexibility for optimum vehicle packaging. The carbon/plastic brick may reduce or minimize the number of discrete parts used in a fuel tank assembly, as it can be integrated into either a fuel tank or fuel tank attachment, thereby eliminating the need for a separate carbon canister. The carbon/plastic brick minimizes or eliminates carbon dust associated adsorption/desorption cycles and also eliminates the need for apparatus to maintain carbon bed integrity.