FILTER ASSEMBLY FOR REMOVING PARTICULATES IN AN EXHAUST GAS IN A FUEL ENGINE
First Claim
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1. A filter assembly for removing particulates in an exhaust gas in a fuel engine, the assembly comprising:
- a primary filter having a first side and a second side, the primary filter configured to remove an amount of particulates from the exhaust gas flowing from the first side to second side; and
a foam element disposed proximate to the first side of the primary filter, the foam element configured to remove another amount of particulates from the exhaust gas.
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Abstract
A filter assembly for removing particulates in an exhaust gas in a fuel engine is provided. The filter assembly comprises a primary filter having a first side and a second side, the primary filter configured to remove an amount of particulates from the exhaust gas flowing from the first side to second side; and a foam element disposed proximate to the first side of the primary filter, the foam element configured to remove another amount of particulates from the exhaust gas.
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Citations
20 Claims
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1. A filter assembly for removing particulates in an exhaust gas in a fuel engine, the assembly comprising:
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a primary filter having a first side and a second side, the primary filter configured to remove an amount of particulates from the exhaust gas flowing from the first side to second side; and a foam element disposed proximate to the first side of the primary filter, the foam element configured to remove another amount of particulates from the exhaust gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11)
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12. An exhaust treatment device for removing particulates in an exhaust gas in a fuel engine, comprising:
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a housing having an inlet end and an outlet end, the exhaust gas being configured to flow through the inlet end and out the outlet end; a primary filter having a first side and a second side, the first side being proximate to the inlet end and the second side being proximate to the outlet end, the primary filter configured to remove an amount of particulates from the exhaust gas flowing from the first side to second side; and a foam element disposed proximate to the first side of the primary filter, the foam element configured to remove another amount of particulates from the exhaust gas. - View Dependent Claims (13, 14, 16, 17, 18, 19)
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15. The exhaust treatment device as in claim 145, wherein each of the plurality of open metallic structures has a pore size ranging from 20 microns to 1500 microns.
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20. A diesel particulate filter assembly for removing particulates in an exhaust gas in a fuel engine, the assembly comprising:
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a primary diesel particulate filter having a first side and a second side, the primary diesel particulate filter configured to remove an amount of particulates from the exhaust gas flowing from the first side to the second side, the primary diesel particulate filter is made up of a high temperature ceramic material; and a diesel particulate filter foam element disposed proximate to the first side of the primary diesel particulate filter, the diesel particulate filter foam element configured to remove another amount of particulates from the exhaust gas, the diesel particulate filter foam element is made up of a ceramic foam material, a metal foam material, or a combination of both.
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Specification