Hydrocarbon Adsorber with Purge Airflow Channel
First Claim
1. An air induction system for an internal combustion engine of a motor vehicle, said system comprising an unfiltered air intake, an air cleaner assembly, a filtered air duct, a mass air flow sensor arranged along said filtered air duct for measuring air flow through said air induction system;
- a throttle body arranged to regulate air flow through said air induction system, and a hydrocarbon adsorber positioned in said air induction system for absorbing uncombusted hydrocarbons;
wherein said hydrocarbon adsorber is positioned out of the main airflow that passes through the air induction system, and said air induction system further comprises a purge channel for directing a portion of the air flow through the air induction system through said hydrocarbon adsorber to purge adsorbed hydrocarbons from said adsorber.
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Accused Products
Abstract
An air cleaner assembly and an air induction system for an internal combustion engine. The air cleaner assembly preferably is formed using first and second housing members that are assembled to define an interior volume. A hydrocarbon adsorber is located within air induction system, e.g., within the interior volume of the air cleaner assembly. The hydrocarbon adsorber is positioned outside of the main air flow within a recess formed in a wall of one of the housing members. A purge channel is formed in the interior wall that houses the hydrocarbon adsorber. Air flow through the air induction system passes via the purge channel through the hydrocarbon adsorber. By facilitating air flow through the hydrocarbon adsorber that is positioned outside of the main airflow, the hydrocarbon adsorber is self-regenerating and does not have to be replaced over the lifetime of the vehicle as a result of hydrocarbon build-up.
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Citations
20 Claims
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1. An air induction system for an internal combustion engine of a motor vehicle, said system comprising an unfiltered air intake, an air cleaner assembly, a filtered air duct, a mass air flow sensor arranged along said filtered air duct for measuring air flow through said air induction system;
- a throttle body arranged to regulate air flow through said air induction system, and a hydrocarbon adsorber positioned in said air induction system for absorbing uncombusted hydrocarbons;
wherein said hydrocarbon adsorber is positioned out of the main airflow that passes through the air induction system, and said air induction system further comprises a purge channel for directing a portion of the air flow through the air induction system through said hydrocarbon adsorber to purge adsorbed hydrocarbons from said adsorber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a throttle body arranged to regulate air flow through said air induction system, and a hydrocarbon adsorber positioned in said air induction system for absorbing uncombusted hydrocarbons;
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13. An air cleaner assembly comprising an air filter housing comprising a plurality of air filter housing members and having an air filter element disposed therein with an unfiltered air inlet on one side of the air filter element and a filtered air outlet on the other side of the air filter element, whereby air from the unfiltered air inlet must flow through the air filter element to reach the filtered air outlet;
- said unfiltered air inlet communicating with the unfiltered air intake, and said filtered air outlet communicating with the filtered air duct; and
a hydrocarbon adsorber positioned in said air cleaner assembly for absorbing uncombusted hydrocarbons;
wherein said hydrocarbon adsorber is positioned out of the main airflow that passes through the air cleaner assembly, and said air cleaner assembly further comprises a purge channel for directing a portion of the air flow through the air cleaner assembly through said hydrocarbon adsorber to purge adsorbed hydrocarbons from said adsorber. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
- said unfiltered air inlet communicating with the unfiltered air intake, and said filtered air outlet communicating with the filtered air duct; and
Specification