公开(公告)号：US20230160326A1

公开(公告)日：2023-05-25

申请号：US18075031

申请日：2022-12-05

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： Changsheng C. Su ,  A. Carl McDonald ,  Ramakrishna Gopal Dontha ,  Niklas M. Schmidt ,  Nathan A. Ottinger ,  Z. Gerald Liu ,  James C. Clerc ,  Yujun Wang

IPC: F01N3/021 ,  F01N9/00

CPC classification number: F01N3/021 ,  F01N9/002 ,  F01N9/005 ,  F01N2430/04 ,  F01N2610/102 ,  F01N2610/12 ,  F01N2610/1426 ,  F01N2610/1453 ,  F01N2900/1611

Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.

公开(公告)号：US11519310B2

公开(公告)日：2022-12-06

申请号：US17430645

申请日：2019-02-15

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： Changsheng C. Su ,  A. Carl McDonald, Jr. ,  Ramakrishna Gopal Dontha ,  Niklas M. Schmidt ,  Nathan A. Ottinger ,  Z. Gerald Liu ,  James C. Clerc ,  Yujun Wang

IPC: F01N3/021 ,  F01N9/00

Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.

公开(公告)号：US11753975B2

公开(公告)日：2023-09-12

申请号：US18075031

申请日：2022-12-05

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： Changsheng C. Su ,  A. Carl McDonald ,  Ramakrishna Gopal Dontha ,  Niklas M. Schmidt ,  Nathan A. Ottinger ,  Z. Gerald Liu ,  James C. Clerc ,  Yujun Wang

IPC: F01N3/021 ,  F01N9/00

CPC classification number: F01N3/021 ,  F01N9/002 ,  F01N9/005 ,  F01N2430/04 ,  F01N2610/102 ,  F01N2610/12 ,  F01N2610/1426 ,  F01N2610/1453 ,  F01N2900/1611

Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.

公开(公告)号：US11708775B2

公开(公告)日：2023-07-25

申请号：US17701135

申请日：2022-03-22

Applicant: Cummins Emission Solutions Inc.

Inventor： Yujun Wang ,  John K. Heichelbech ,  Changsheng C. Su

IPC: F01N3/02 ,  B01D46/00 ,  B01D46/46 ,  F01N3/10 ,  F01N3/20 ,  B01D53/94 ,  F01N3/032 ,  B01D46/62 ,  B01D46/82 ,  B01D46/44 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  F01N11/00

CPC classification number: F01N3/032 ,  B01D46/0086 ,  B01D46/0087 ,  B01D46/444 ,  B01D46/446 ,  B01D46/448 ,  B01D46/46 ,  B01D46/62 ,  B01D46/82 ,  B01D53/944 ,  B01D53/9418 ,  B01D53/9477 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N11/002 ,  B01D2255/904 ,  B01D2279/30 ,  F01N2410/04 ,  F01N2550/04

Abstract: A filtration assembly for removing particulate matter from exhaust gas produced by an engine, including: a first filter; a second filter positioned downstream of the first filter; and a valve including: a first ring defining a plurality of first openings, and a second ring defining a plurality of second openings, the second ring abutting the first ring. The valve is moveable between a closed position in which the plurality of first openings are misaligned with the plurality of second openings to prevent a fluid from flowing through the plurality of first and second openings, and an open position in which the second ring is rotated relative to the first ring such that the plurality of first openings are aligned with the plurality of second openings allowing the fluid to flow therethrough. A first end of the valve is positioned at an outlet of the first filter, and a second end of the valve is positioned at an inlet of the second filter. In the closed position of the valve, substantially all of the exhaust gas flows through the second filter, and in the open position of the valve, at least a portion of the exhaust gas flows through the valve and bypasses the second filter.

公开(公告)号：US11480082B2

公开(公告)日：2022-10-25

申请号：US17280420

申请日：2018-09-28

Applicant: Cummins Emission Solutions Inc.

Inventor： Yujun Wang ,  John K. Heichelbech ,  Changsheng C. Su

IPC: F01N3/00 ,  F01N3/032 ,  B01D46/62 ,  B01D46/82 ,  B01D46/00 ,  B01D46/44 ,  B01D46/46 ,  B01D53/94 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  F01N3/10 ,  F01N3/20 ,  F01N11/00

Abstract: An aftertreatment system comprises a SCR system, a first filter, and a second filter disposed downstream of the first filter and a bypass conduit providing a flow path bypassing the second filter. A valve is operatively coupled to the bypass conduit and is moveable between a closed position in which the exhaust gas flows through the second filter, and an open position in which at least a portion of the exhaust gas flows through the bypass conduit. A controller is operatively coupled to the valve configured to adjust the valve based on a first filtration efficiency of the first filter to cause the exhaust gas expelled into the environment from the aftertreatment to have a particulate matter count meeting particulate matter emission standards.

公开(公告)号：US20220213822A1

公开(公告)日：2022-07-07

申请号：US17701135

申请日：2022-03-22

Applicant: Cummins Emission Solutions Inc.

Inventor： Yujun Wang ,  John K. Heichelbech ,  Changsheng C. Su

IPC: F01N3/032 ,  B01D46/62 ,  B01D46/82 ,  B01D46/00 ,  B01D46/44 ,  B01D46/46 ,  B01D53/94 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  F01N3/10 ,  F01N3/20 ,  F01N11/00

Abstract: A filtration assembly for removing particulate matter from exhaust gas produced by an engine, including: a first filter; a second filter positioned downstream of the first filter; and a valve including: a first ring defining a plurality of first openings, and a second ring defining a plurality of second openings, the second ring abutting the first ring. The valve is moveable between a closed position in which the plurality of first openings are misaligned with the plurality of second openings to prevent a fluid from flowing through the plurality of first and second openings, and an open position in which the second ring is rotated relative to the first ring such that the plurality of first openings are aligned with the plurality of second openings allowing the fluid to flow therethrough. A first end of the valve is positioned at an outlet of the first filter, and a second end of the valve is positioned at an inlet of the second filter. In the closed position of the valve, substantially all of the exhaust gas flows through the second filter, and in the open position of the valve, at least a portion of the exhaust gas flows through the valve and bypasses the second filter.

公开(公告)号：US20220178285A1

公开(公告)日：2022-06-09

申请号：US17430645

申请日：2019-02-15

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： Changsheng C. Su ,  A. Carl McDonald, JR. ,  Ramakrishna Gopal Dontha ,  Niklas M. Schmidt ,  Nathan A. Ottinger ,  Z. Gerald Liu ,  James C. Clerc ,  Yujun Wang

IPC: F01N3/029 ,  B01D53/92

Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.

公开(公告)号：US20220034245A1

公开(公告)日：2022-02-03

申请号：US17280420

申请日：2018-09-28

Applicant: Cummins Emission Solutions Inc.

Inventor： Yujun Wang ,  John K. Heichelbech ,  Changsheng C. Su

IPC: F01N3/032 ,  F01N3/20 ,  F01N11/00 ,  F01N3/035 ,  F01N3/023 ,  F01N3/10 ,  F01N3/022 ,  B01D53/94 ,  B01D46/00 ,  B01D46/44 ,  B01D46/46

Abstract: An aftertreatment system comprises a SCR system, a first filter, and a second filter disposed downstream of the first filter and a bypass conduit providing a flow path bypassing the second filter. A valve is operatively coupled to the bypass conduit and is moveable between a closed position in which the exhaust gas flows through the second filter, and an open position in which at least a portion of the exhaust gas flows through the bypass conduit. A controller is operatively coupled to the valve configured to adjust the valve based on a first filtration efficiency of the first filter to cause the exhaust gas expelled into the environment from the aftertreatment to have a particulate matter count meeting particulate matter emission standards.