Air cleaner
First Claim
1. An air cleaner provided with a filter element within a housing, comprising:
- a fuel adsorption member for adsorbing a fuel vapor;
said fuel adsorption member being arranged downstream of said filter element;
said fuel adsorption member being provided with a sheet member having a fuel adsorbing function, and a frame for fixing the sheet member to said housing;
said frame having a rigidity;
said sheet member being provided in a tensioned manner in an inner side of said frame;
said fuel adsorption member being provided with a portion which is bent or curved along at least two surfaces facing an air flow path within said housing;
said at least two surfaces being arranged adjacent to each other;
said fuel adsorption member extending along said air flow path;
a support member provided in said frame for supporting said sheet member; and
said support member maintaining said sheet member in a bent state or a curved state, in the bent portion or the curved portion of said fuel adsorption member.
1 Assignment
0 Petitions
Accused Products
Abstract
A fuel adsorption member 16 is fixed to an inner surface of a housing 13 by fixing pins 14. A fuel vapor leaking from an intake system of an engine is adsorbed by an active carbon included in an adsorption sheet member of the fuel adsorption member 16. The fuel adsorption member 16 is arranged along an inner surface of the housing 13. Accordingly, when an engine is operated, the fuel adsorption member 16 can reduce a ventilation resistance without being adversely affecting an intake air E. Further, the fuel adsorption member 16 is fixed to an inner surface of the housing 13 in accordance with a swaging of the fixing pins 14. Therefore, it is possible to prevent a damage of the fuel adsorption member 16 caused by a vehicle vibration, a fluctuation of an intake pressure or the like, and a reduction of a fuel adsorbing function caused by a wear of the active carbon.
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Citations
15 Claims
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1. An air cleaner provided with a filter element within a housing, comprising:
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a fuel adsorption member for adsorbing a fuel vapor;
said fuel adsorption member being arranged downstream of said filter element;
said fuel adsorption member being provided with a sheet member having a fuel adsorbing function, and a frame for fixing the sheet member to said housing;
said frame having a rigidity;
said sheet member being provided in a tensioned manner in an inner side of said frame;
said fuel adsorption member being provided with a portion which is bent or curved along at least two surfaces facing an air flow path within said housing;
said at least two surfaces being arranged adjacent to each other;
said fuel adsorption member extending along said air flow path;
a support member provided in said frame for supporting said sheet member; and
said support member maintaining said sheet member in a bent state or a curved state, in the bent portion or the curved portion of said fuel adsorption member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A manufacturing method of a fuel absorption member having a fuel adsorbing function, comprising:
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arranging two retaining members retaining fuel adsorbent while spacing the retaining members from each other;
arranging a pair of covering sheets so as to hold both retaining members in between;
forming a sheet main body by welding both the covering sheets at outer edge portions thereof and an outer peripheral portion of said retaining member;
arranging said sheet main body in a mold after bending said sheet main body at a predetermined position; and
forming a frame retaining said sheet main body in a state of bending, by injecting a molten resin into said mold and solidifying the molten resin.
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Specification