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US 6,464,761 B1Granted
Air induction filter assembly
AssigneeVisteon Global Technologies, Inc.
InventorNeville Jimmy Bugli
Life of this patent
Estimating the term…
Abstract
An air induction filter assembly includes a housing and a plurality of filter layers disposed in the housing. One of the filter layers is a carbon impregnated polyurethane foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to the filter.
Claims20
An air induction filter assembly comprising:
- a housing;
- a filter disposed in said housing;
- and
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said housing to a top of said housing, said layers including a pre-filter foam layer disposed adjacent the bottom of said housing, a post-filter foam layer disposed adjacent the top of said housing, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to said filter.
1 more element
An air induction filter assembly comprising:
- a housing;
- a filter disposed in said housing;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said housing to a top of said housing, said layers including a pre-filter foam layer disposed adjacent the bottom of said housing, a post-filter foam layer disposed adjacent the top of said housing, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to said filter;
- and
- wherein said pre-filter foam layer has a porosity of approximately 15 ppi to approximately 45 ppi.
2 more elements
An air induction filter assembly comprising:
- a housing;
- a filter disposed in said housing;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said housing to a top of said housing, said layers including a pre-filter foam layer disposed adjacent the bottom of said housing, a post-filter foam layer disposed adjacent the top of said housing, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to said filter;
- and
- wherein said carbon impregnated foam layer has a porosity of approximately 15 ppi to approximately 30 ppi.
2 more elements
An air induction filter assembly comprising:
- a housing;
- a filter disposed in said housing;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said housing to a top of said housing, said layers including a pre-filter foam layer disposed adjacent the bottom of said housing, a post-filter foam layer disposed adjacent the top of said housing, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to said filter;
- and
- wherein said carbon impregnated foam layer contains carbon in an amount of approximately one hundred percent to approximately three hundred percent by weight of said foam layer.
2 more elements
An air induction filter assembly comprising:
- a housing;
- a filter disposed in said housing;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said housing to a top of said housing, said layers including a pre-filter foam layer disposed adjacent the bottom of said housing, a post-filter foam layer disposed adjacent the top of said housing, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to said filter;
- and
- wherein said post-filter foam layer has a porosity of approximately 45 ppi to approximately 100 ppi.
2 more elements
An air induction filter assembly comprising:
- a housing;
- a filter disposed in said housing;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said housing to a top of said housing, said layers including a pre-filter foam layer disposed adjacent the bottom of said housing, a post-filter foam layer disposed adjacent the top of said housing, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to said filter;
- and
- wherein said layers include a medium porosity foam layer disposed between said carbon impregnated foam layer and said post-filter foam layer.
2 more elements
An air induction filter assembly comprising:
- a housing for operative connection to an engine of a vehicle having an air cleaner tray and an air cleaner cover;
- a filter disposed in said housing between said air cleaner tray and said air cleaner cover;
- and
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said air cleaner tray to a top of said air cleaner cover, said layers including a pre-filter foam layer disposed adjacent said air cleaner tray, a post-filter foam layer disposed adjacent said air cleaner cover, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet of the engine after the vehicle is shut-off.
1 more element
An air induction filter assembly for an engine of a vehicle comprising:
- a housing having an air cleaner tray and an air cleaner cover;
- a filter disposed in said housing between said air cleaner tray and said air cleaner cover;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said air cleaner tray to a top of said air cleaner cover, said layers including a pre-filter foam layer disposed adjacent said air cleaner tray, a post-filter foam layer disposed adjacent said air cleaner cover, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet of the engine after the motor vehicle is shut-off;
- and
- wherein said pre-filter foam layer has a porosity of approximately 15 ppi to approximately 45 ppi.
2 more elements
An air induction filter assembly for an engine of a vehicle comprising:
- a housing having an air cleaner tray and an air cleaner cover;
- a filter disposed in said housing between said air cleaner tray and said air cleaner cover;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said air cleaner tray to a top of said air cleaner cover, said layers including a pre-filter foam layer disposed adjacent said air cleaner tray, a post-filter foam layer disposed adjacent said air cleaner cover, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet of the engine after the motor vehicle is shut-off;
- and
- wherein said carbon impregnated foam layer has a porosity of approximately 15 ppi to approximately 30 ppi.
2 more elements
An air induction filter assembly for an engine of a vehicle comprising:
- a housing having an air cleaner tray and an air cleaner cover;
- a filter disposed in said housing between said air cleaner tray and said air cleaner cover;
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said air cleaner tray to a top of said air cleaner cover, said layers including a pre-filter foam layer disposed adjacent said air cleaner tray, a post-filter foam layer disposed adjacent said air cleaner cover, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet of the engine after the motor vehicle is shut-off;
- and
- wherein said post-filter foam layer has a porosity of approximately 45 ppi to approximately 100 ppi.
2 more elements
A vehicle comprising:
- an engine;
- a housing operatively connected to said engine having an air cleaner tray and an air cleaner cover;
- a filter disposed in said housing between said air cleaner tray and said air cleaner cover;
- and
- said filter having a plurality of individual and separate layers made of a foam material stacked together in a direction from a bottom of said air cleaner tray to a top of said air cleaner cover, said layers including a pre-filter foam layer disposed adjacent said air cleaner tray, a post-filter foam layer disposed adjacent said air cleaner cover, and a carbon impregnated foam layer disposed between said pre-filter foam layer and said post-filter foam layer, said carbon impregnated layer having an air inlet side disposed adjacent the pre-filter foam layer for removing residual hydrocarbon (HC) vapors diffusing through an air inlet of said engine after the vehicle is shut-off.
2 more elements
Dependencies are inferred from the claim text.