摘要:
A fuel vapor processing apparatus including: a passage for fluid; a tank port and a purge port formed on one end side of the passage; an atmospheric air port formed on the other end side; and four or more adsorption layers filled with a fuel adsorbing material, wherein the main adsorption layer, and a region provided on the atmospheric air port side of the main adsorption layer are provided; the adsorption layers other than the main adsorption layer, and separation parts which separate the adjacent adsorption layers are provided in the region, and in the at least two separation parts inside the region, when the cross-sectional area of each of the at least two separation parts perpendicular to a flow direction of the passage is converted into a circular cross-sectional area, a distance between the adjacent adsorption layers is larger than the mean value of diameters of the each separation part.
摘要:
A fuel vapor processing apparatus including: a passage for fluid; a tank port and a purge port formed on one end side of the passage; an atmospheric air port formed on the other end side; and four or more adsorption layers filled with a fuel adsorbing material, wherein the main adsorption layer, and a region provided on the atmospheric air port side of the main adsorption layer are provided; the adsorption layers other than the main adsorption layer, and separation parts which separate the adjacent adsorption layers are provided in the region, and in the at least two separation parts inside the region, when the cross-sectional area of each of the at least two separation parts perpendicular to a flow direction of the passage is converted into a circular cross-sectional area, a distance between the adjacent adsorption layers is larger than the mean value of diameters of the each separation part.
摘要:
In an evaporated fuel treatment apparatus, for reducing blow-by of an evaporated fuel component to the outside, the evaporated fuel treatment apparatus includes at least one adsorption chamber filled with a first adsorbent and a second adsorbent that adsorb and desorb a fuel component of evaporated fuel, and the first adsorbent has a higher pore volume than the second adsorbent with respect to effective pores that effectively adsorb and desorb a low-boiling fuel component, and the first adsorbent has a lower pore volume than the second adsorbent with respect to pores smaller than the effective pores and having higher adsorbability and lower desorbability on butane than the effective pores.
摘要:
One aspect of the present teachings includes a separation membrane arranged in a hollow case. A particular component concentration chamber and a particular component dilution chamber are arranged in series in the hollow case. The particular component concentration chamber is capable of increasing concentration of the particular component by allowing permeation of the particular gas through the separation membrane. The particular component dilution chamber is capable of increasing concentration of the particular component by not allowing permeation of the particular gas through the separation membrane. The particular component concentration chamber and the particular component dilution chamber are configured such that only a gas containing the particular component and permeated through the separation membrane or only a gas containing the particular component not permeated through the separation membrane in one of the chambers disposed on an upstream side (i.e., the side of the inlet port) can flow into the other of the chambers.
摘要:
Embodiments of the invention are directed towards a trap canister for adsorbing fuel vapor contained in breakthrough gas discharged from a main adsorbent canister. The main adsorbent canister is connected to a fuel tank has a case defining an adsorption chamber therein and an adsorbent filled in the adsorption chamber. The case has a first end open to the atmosphere and a second end for introducing breakthrough gas into the adsorption chamber. The adsorbent filled in the adsorption chamber adsorbs the fuel vapor contained in the breakthrough gas. The trap canister further has a bypass path for bypassing the adsorption chamber and a valve configured to block the bypass path and to allow for opening during refueling. This prevents the fuel vapor from flowing into the atmosphere during normal operation while also decreasing pressure loss during refueling.
摘要:
A trap canister for adsorbing fuel vapor contained in break-through gas discharged from a main canister. The trap canister may include a trap case having an adsorption chamber defined therein and containing an adsorption material, so that the break-through gas flows through the adsorption material in a gas flow direction. The adsorption chamber may include a gas introduction side and a gas outlet side located on a downstream side of the gas introduction side along the gas flow direction. The adsorption chamber may have a passage with a cross-sectional area gradually decreasing from the gas introduction side toward the gas outlet side. The trap canister may further include a temperature control device configured to control the temperature of the adsorption material.
摘要:
A snap-fit attaching device may attach an accessory device to an attachment unit that may be integrated with or connected to a main unit. The attachment device may include a first structural member and a second structural member. The first structural member includes a slot that defines an engaging opening forming member. The engaging opening forming member is supported at a support portion in a cantilever manner so as to be resiliently deformable. An engaging opening is formed in the engaging opening forming member. The first structural member further includes a bridging member defining a part of the slot and disposed at a position opposite to the support portion. The second structural member includes an engaging projection for engagement with the engaging opening.
摘要:
A vaporized fuel processing apparatus for a vehicle having a fuel tank has a casing filled with an adsorbent and having a first outer surface. The casing has first ribs protruding from the first outer surface and extending without intersecting with each other. The casing has at least one second rib protruding from the first outer surface. At least one pair of the first ribs adjacent to each other are connected with each other via one of the second ribs only. The other pairs of the first ribs adjacent to each other are connected with each other via one of the second ribs only or are not connected with each other via any one of the second ribs.
摘要:
In an evaporated fuel treatment apparatus, for reducing blow-by of an evaporated fuel component to the outside, the evaporated fuel treatment apparatus includes at least one adsorption chamber filled with a first adsorbent and a second adsorbent that adsorb and desorb a fuel component of evaporated fuel, and the first adsorbent has a higher pore volume than the second adsorbent with respect to effective pores that effectively adsorb and desorb a low-boiling fuel component, and the first adsorbent has a lower pore volume than the second adsorbent with respect to pores smaller than the effective pores and having higher adsorbability and lower desorbability on butane than the effective pores.