# US 2014/0150655 A1 · Intake system including remotely located filter assemblies and method for operation of an intake system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150655 A1 - Document ID: US20140150655A1 - Status: Published application - Kind: A1 - Application number: 13/841,327 - Filed: 2013-03-15 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Roger Khami; Preet Kamal Virk; Robert Joseph Mohan; Joseph Matthew McCann; James William Ortman - Web page: https://patentgrep.com/patent/US20140150655A1 ## CPC - F02M 35/02483: {Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements} - F02M 35/0215: {arranged in parallel} - F02M 35/02441: {Materials or structure of filter elements, e.g. foams} - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract An intake system for an engine including a first air filter assembly in fluidic communication with an intake manifold and a second air filter assembly spaced away from the first air filter assembly and in fluidic communication with the intake manifold. ## Claims ### Claim 1 An intake system for an engine comprising: a first air filter assembly in fluidic communication with an intake manifold; and a second air filter assembly spaced away from the first air filter assembly and in fluidic communication with the intake manifold in parallel with the first air filter assembly. ### Claim 2 (depends on 1) The intake system of claim 1, where the first air filter assembly includes a porous foam positioned upstream of a filter element. ### Claim 3 (depends on 2) The intake system of claim 2, where the porous foam is positioned vertically below the filter element. ### Claim 4 (depends on 2) The intake system of claim 2, where the porous foam spans a leading side of the filter element. ### Claim 5 (depends on 1) The intake system of claim 1, where the first air filter assembly is in direct fluidic communication with a connector duct in direct fluidic communication with a filtered air compartment in the second air filter assembly. ### Claim 6 (depends on 5) The intake system of claim 5, where first air filter assembly is removably coupled to the connector duct. ### Claim 7 (depends on 6) The intake system of claim 6, where the first air filter assembly includes a protrusion mated with a recess included in a housing of the connector duct in a coupled configuration. ### Claim 8 (depends on 1) The intake system of claim 1, where the first air filter assembly has a smaller cross-sectional area than the second air filter assembly. ### Claim 9 (depends on 1) The intake system of claim 1, where the first air filter assembly is positioned external to an engine compartment and the second air filter assembly is positioned within the engine compartment. ### Claim 10 (depends on 1) The intake system of claim 1, where a vector normal to an inlet face of the first air filter assembly is not parallel with a vector normal to an inlet face of the second air filter assembly. ### Claim 11 (depends on 1) The intake system of claim 1, where an inlet face of the first air filter assembly faces downward and is approximately parallel with a filter assembly in the first air filter assembly, and an inlet face of the second air filter assembly faces approximately horizontal and perpendicular to the inlet face of the first air filter assembly. ### Claim 12 (depends on 1) The intake system of claim 1, where the first air filter assembly is positioned adjacent to the second air filter assembly in an engine compartment. ### Claim 13 A method for operation of an intake system for an engine comprising: flowing intake air through a first air filter assembly including porous foam positioned upstream of a filter element, the first air filter assembly spaced away from a second air filter assembly in fluidic communication with an intake manifold; and flowing filtered intake air from the first air filter assembly to the intake manifold. ### Claim 14 (depends on 13) The method of claim 13, further comprising flowing intake air through the second air filter assembly and flowing intake air from the second air filter assembly to the intake manifold. ### Claim 15 (depends on 13) The method of claim 13, where the filter element has a smaller cross-sectional area perpendicular to a direction of air flow through the filter element than a second filter element included in the second air filter assembly. ### Claim 16 (depends on 13) The method of claim 13, where flowing filtered intake air from the first air filter assembly to the intake manifold includes flowing filtered intake air from the first air filter assembly to a filtered air compartment in the second air filter assembly. ### Claim 17 An intake system for an engine, comprising: a first air filter assembly in fluidic communication with an intake manifold; a second air filter assembly spaced away from the first air filter assembly and in fluidic communication with the intake manifold; and a connector duct in direct fluidic communication with the first air filter assembly and a filtered air compartment included in the second air filter assembly downstream of a filter element in the second air filter assembly. ### Claim 18 (depends on 16) The intake system of claim 16, where the second air filter assembly is positioned in an engine compartment and the first air filter assembly is positioned external to the engine compartment. ### Claim 19 (depends on 16) The intake system of claim 16, where the first air filter includes a quick coupling apparatus having a protrusion sized to mate with a recess in a housing of the connector duct. ### Claim 20 (depends on 16) The intake system of claim 16, where the first air filter assembly includes a different material than the second air filter assembly. ### Claim 21 (depends on 16) The intake system of claim 16, where the first air filter assembly includes a porous foam positioned upstream of a filter element. ### Claim 22 (depends on 16) The intake system of claim 16, where the first air filter assembly is positioned adjacent to the second air filter assembly in an engine compartment. ### Claim 23 A secondary filter for a vehicle, comprising: a porous foam formed into a cylindrical shape; and a filter element positioned at an end of the porous foam, the porous foam spanning a leading side of the filter element.