Air cleaner and fuel adsorbent member
AssigneeToyota Boshoku Kabushiki Kaisha
InventorKouichi Oda
Life of this patent
Estimating the term…
Abstract
A fuel adsorbent member 16 is arranged in a housing 11 at a position downstream from a filter element 14. The fuel adsorbent member 16 adsorbs evaporative fuel. An air cleaner is configured in such a manner that, when receiving a backfire pressure P1 from an engine, the fuel adsorbent member 16 is held in the state secured to the housing 11. Specifically, release holes 22 are defined in a portion of the fuel adsorbent member 16 for releasing the backfire pressure P1 through the release holes 22.
Claims12
An air cleaner having a filter element that filters air, comprising:
- a housing that accommodates the filter element;
- a fuel adsorbent member that is secured to the housing and adsorbs evaporative fuel, the fuel adsorbent member being provided downstream from the filter element, the fuel adsorbent member having a sheet-like shape as a whole;
- and
- a holder that holds the fuel adsorbent member in a state secured to the housing when the fuel adsorbent member receives a backfire pressure from an intake system of an engine, the holder being arranged in a portion of the fuel adsorbent member in which an extent of influence by the backfire pressure is great,
- wherein the holder reduces the backfire pressure in the portion of the fuel adsorbent member in which the extent of influence by the backfire pressure is great,
- wherein the holder is defined by a release portion that releases the backfire pressure to an upstream side of the fuel adsorbent member,
- wherein the release portion is arranged in a portion of the fuel adsorbent member,
- wherein the release portion is defined by a plurality of holes passing through the fuel adsorbent member, the holes being spaced from one another and having a through-hole structure that connects between upstream and downstream sides of the fuel adsorbent member.
A fuel adsorbent member used in an air cleaner for adsorbing evaporative fuel, the air cleaner has an inlet port and outlet port connected to an engine, the fuel adsorbent member having a sheet-like shape as a whole, the fuel adsorbent member comprising:
- a low air flow resistance portion formed in an outer end of the fuel adsorbent member for partially decreasing air flow resistance of the outer end of the fuel adsorbent member,
- wherein, when the fuel adsorbent member is installed in the air cleaner, a backfire pressure of the engine is released through the low air flow resistance portion, and
- wherein the low air flow resistance portion is defined by a plurality of holes passing through the fuel adsorbent member, the holes being spaced from one another and having a through-hole structure that connects between upstream and downstream sides of the fuel adsorbent member.
Dependencies are inferred from the claim text.