Air filtration system for an engine

Patent metadata

Field	Value
Publication number	US-9897050-B2
Application number	US-201414556363-A
Country	US
Kind code	B2
Filing date	Dec 1, 2014
Priority date	Dec 11, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

An air filtration system ( 100 ) for an engine. The air filtration system ( 100 ) includes a main filter assembly ( 102 ) configured to filter air from a first dirty air inlet ( 110 ), the main filter assembly ( 102 ) defining a dirty air side ( 112 ) of the main filter assembly ( 102 ) and a clean air side ( 114 ) of the main filter assembly ( 102 ). The air filtration system further includes an auxiliary filter assembly ( 104 ) configured to filter air from a second dirty air inlet ( 116 ), wherein the auxiliary filter assembly ( 104 ) is selectively attachable to the main filter assembly ( 102 ) such that when the auxiliary filter assembly ( 104 ) is attached air is filtered from the second dirty air inlet ( 116 ) to the clean air side ( 114 ) of the main filter assembly ( 102 ).

First claim

The invention claimed is:

1. An air filtration system for an engine, the air filtration system comprising:
a main filter assembly configured to filter air from a first dirty air inlet, the main filter assembly defining a dirty air side of the main filter assembly and a clean air side of the main filter assembly; and
an auxiliary filter assembly configured to filter air from a second dirty air inlet, wherein the auxiliary filter assembly is selectively attachable directly to the main filter assembly such that when the auxiliary filter assembly is attached air is filtered from the second dirty air inlet to the clean air side of the main filter assembly.

2. An air filtration system according to claim 1 , wherein the main filter assembly and the auxiliary filter assembly are in a parallel arrangement when the auxiliary filter assembly is attached to the main filter assembly.

3. An air filtration system according to claim 2 , the main filter assembly comprising:
a housing defining a chamber in which a main filter is supported; and
one or more main duct members configured to flow air to and/or from the housing, wherein the auxiliary filter assembly is selectively attachable to the housing.

4. An air filtration system according to claim 3 , wherein the auxiliary filter assembly is selectively attachable over at least one opening of the housing, wherein the openings are configured to fluidically connect the second dirty air inlet to the clean air side of the main filter assembly.

5. An air filtration system according to claim 4 , wherein the auxiliary filter assembly is slidably attachable to the housing.

6. An air filtration system according to claim 5 , the air filtration system further comprising a sealing element between the auxiliary filter assembly and the housing and/or the duct members.

7. An air filtration system according to claim 6 , wherein the auxiliary filter assembly comprises an auxiliary housing, an auxiliary filter, a flow restrictor and/or one or more auxiliary duct members.

8. An air filtration system according to claim 7 , wherein the flow restrictor comprises one or more foam elements.

9. An air filtration system according to claim 1 , wherein the auxiliary filter assembly comprises an auxiliary cover member configured to prevent the flow of air from the second dirty air inlet to the clean air side of the main filter assembly.

10. An air filtration system according to claim 1 , wherein the first dirty air inlet is configured to draw in at least a portion of air from outside of the vehicle.

11. An air filtration system according to claim 1 , wherein the second dirty air inlet is configured to draw in at least a portion of air located within an engine bay of the vehicle.

12. An engine or vehicle including one or more air filtration systems of claim 1 .

13. An auxiliary filter assembly for an air filtration system of an engine, the auxiliary filter assembly being selectively attachable directly to a main filter assembly configured to filter air from a first dirty air inlet, the main filter assembly defining a dirty air side of the main filter assembly and a clean air side of the main filter assembly, wherein the auxiliary air filter assembly is configured to filter air from a second dirty air inlet such that when the auxiliary filter assembly is attached to the main filter assembly air is filtered from the second dirty air inlet to the clean air side of the main filter assembly.

14. A main filter assembly for an air filtration system of an engine, the main filter assembly configured to filter air from a first dirty air inlet, the main filter assembly defining a dirty air side of the main filter assembly and a clean air side of the main filter assembly, wherein the main filter assembly is configured such that an auxiliary filter assembly is selectively attachable directly to the main filter assembly, the auxiliary air filter assembly being configured to filter air from a second dirty air inlet such that when the auxiliary filter assembly is attached to the main filter assembly air is filtered from the second dirty air inlet to the clean air side of the main filter assembly.

15. An air filtration kit comprising:
one or more main filter assemblies configured to filter air from a first dirty air inlet, the main filter assembly defining a dirty air side of the main filter assembly and a clean air side of the main filter assembly; and
one or more auxiliary filter assemblies configured to filter air from a second dirty air inlet, wherein the auxiliary filter assembly is selectively attachable directly to the main filter assembly such that when the auxiliary filter assembly is attached air is filtered from the second dirty air inlet to the clean air side of the main filter assembly.

16. A method of filtering air for an engine, the method comprising:
filtering air from a first dirty air inlet using a main filter assembly, the main filter assembly defining a dirty air side of the main filter assembly and a clean air side of the main filter assembly; and
selectively filtering air from a second dirty air inlet using an auxiliary filter assembly, wherein the auxiliary filter assembly is selectively attachable directly to the main filter assembly such that when the auxiliary filter assembly is attached air is filtered from the second dirty air inlet to the clean air side of the main filter assembly.

Assignees

• Ford Global Tech Llc

Inventors

• Baldwin Jason
• Hyde Jayne
• Khami Roger
• Virk Preet Kamal
• Mohan Robert Joseph
• Mccann Joseph Matthew

Classifications

• B01D46/0043

  containing fixed gas displacement elements or cores · CPC title

• F02M35/0216

  arranged in series, e.g. pre- and main filter in series · CPC title

• B01D46/002

  Operations & Transport · mapped topic

• F02M35/024 Primary

  using filters, e.g. moistened (F02M35/026 takes precedence; cleaning of the filtering material F02M35/08) · CPC title

• B01D46/58

  connected in parallel · CPC title