MAST CARBON AUTOMOTIVE LTD. Patent applications |
Patent application number | Title | Published |
20110168025 | FUEL VAPOUR STORAGE - A fuel vapour storage canister, e.g. a carbon canister for use in an automobiles evaporative fuel vapour emissions control system is described. The canister comprises a housing defining an inner wall and an outer wall; a first fuel vapour storage compartment arranged within a volume defined by the inner wall; and a second fuel vapour storage compartment in fluid communication with the first vapour storage compartment via an air-flow channel, wherein the air-flow channel includes a section arranged to pass between the inner and outer walls of the housing and to provide a heat-exchange function. Thus air cooled by endothermic desorption in the second fuel vapour compartment during canister purging may be warmed by the ambient air (or other thermal-mass) surrounding the outer wall before it reaches the first fuel vapour compartment, thus providing for more efficient desorption in the first fuel vapour compartment. Likewise, air heated by exothermic absorption in the first fuel vapour compartment during canister loading may be cooled by the ambient air before reaching the second fuel vapour compartment, thus providing for more efficient absorption in the second fuel vapour compartment. | 07-14-2011 |
20110139129 | FUEL VAPOR STORAGE AND RECOVERY APPARATUS - A fuel vapor storage and recovery apparatus includes a fuel vapor storage canister, said fuel vapor storage canister comprising at least first and second vapor storage compartments filled with an absorbent material, for instance filled with activated carbon, at least a vapor inlet port, an atmospheric vent port and a purge port. Said fuel vapor storage canister defines an air flow path between said vapor inlet port and said atmospheric vent port during shut-off of the internal combustion engine of the vehicle. During purging cycles there is defined an air flow path between said atmospheric vent port and said purge port wherein said first and second vapor storage compartments are arranged in concentric relationship and wherein said first and second vapor storage compartments in flow direction are separated from each other by an air gap diffusion barrier. | 06-16-2011 |