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公开(公告)号：US20150030466A1
公开(公告)日：2015-01-29
申请号：US14236706
申请日：2012-08-22
Applicant: CUMMINS EMISSION SOLUTIONS, INC.
Inventor： George Muntean , Nachiket Pawar , Kundana Inala , Steve Holl , Stephanie Apewokin , Cynthia Gosselin , Andrew Myer , Jim F. Burke , John Heichelbech
CPC classification number: F01N3/208 , F01N3/2066 , F01N2610/00 , F01N2610/02 , F01N2610/146 , F04B43/02 , F16K7/12 , F16K11/10 , Y02T10/24 , Y10T137/0391 , Y10T137/0396 , Y10T137/7836 , Y10T137/86815 , Y10T137/87676 , Y10T137/87684
Abstract: Urea solution pumps having leakage bypass flowpaths and methods of operating the same are disclosed. Certain embodiments are pump apparatuses including an inlet passage in flow communication with a source of urea solution and a pump chamber, an outlet passage in flow communication with the pump chamber and an exhaust after treatment system, a diaphragm facing the pump chamber and coupled with an actuator, a first housing member coupled with a second housing member form a seal around the pumping chamber, a leak collection chamber surrounding the seal, and a return passage in flow communication with the leak collection chamber and the inlet passage. Urea solution that leaks from the pump chamber past the seal is received by the leak collection chamber and flows through the return passage to the pump inlet passage.
Abstract translation: 公开了具有泄漏旁路流路的尿素溶液泵及其操作方法。 某些实施例是泵装置，其包括与尿素溶液源流动连通的入口通道和泵室，与泵室流动连通的出口通道和排气后处理系统，面向泵室的隔膜， 致动器，与第二壳体构件联接的第一壳体构件围绕泵送室形成密封件，围绕密封件的泄漏收集室以及与泄漏收集室和入口通道流体连通的返回通道。 从泵室泄漏通过密封件的尿素溶液被泄漏收集室接收并流过返回通道到泵入口通道。
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公开(公告)号：US20160326929A1
公开(公告)日：2016-11-10
申请号：US15213744
申请日：2016-07-19
Applicant: Cummins Emission Solutions, Inc.
Inventor： Andrew Myer , Chetan Ponnathpur , John Heichelbech , George Muntean , Stephen Holl , James F. Burke , John Anthis , Joydeep Chakrabarti , Brandon Simmons , Niklas Schmidt , Yogesh V. Birari
CPC classification number: F01N3/208 , F01N3/2066 , F01N2610/00 , F01N2610/02 , F01N2610/146 , F04B43/02 , F16K7/12 , F16K11/10 , Y02T10/24 , Y10T137/0391 , Y10T137/0396 , Y10T137/7836 , Y10T137/86815 , Y10T137/87676 , Y10T137/87684
Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.
Abstract translation: 公开了一种用于处理系统后排气的尿素给料装置和方法。 示例性设备包括被配置为在第一入口处接收加压气体的室，在第二入口处接收尿素溶液，并且将加压气体和尿素的组合流提供给出口，从第一入口延伸到座面，流动通道 阀构件构造成在阀构件与所述座表面间隔开的打开位置和阀构件接触所述座表面的关闭位置之间移动。 当阀构件从打开位置移动到关闭位置时，阀构件在第一位置处接触就座表面，并且从朝向流动通道的方向擦拭从第一位置延伸的就座表面的区域。
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公开(公告)号：US09938875B2
公开(公告)日：2018-04-10
申请号：US15213744
申请日：2016-07-19
Applicant: Cummins Emission Solutions, Inc.
Inventor： Andrew Myer , Chetan Ponnathpur , John Heichelbech , George Muntean , Stephen Holl , James F. Burke , John Anthis , Joydeep Chakrabarti , Brandon Simmons , Niklas Schmidt , Yogesh V. Birari
CPC classification number: F01N3/208 , F01N3/2066 , F01N2610/00 , F01N2610/02 , F01N2610/146 , F04B43/02 , F16K7/12 , F16K11/10 , Y02T10/24 , Y10T137/0391 , Y10T137/0396 , Y10T137/7836 , Y10T137/86815 , Y10T137/87676 , Y10T137/87684
Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.
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