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公开(公告)号：US09664082B2
公开(公告)日：2017-05-30
申请号：US14293614
申请日：2014-06-02
Applicant: Caterpillar Inc.
Inventor： Yong Yi , Jay Venkataraghavan , Arvind Jujare , Steven Ray Lewis , Muheng Zhang
CPC classification number: F01N3/2073 , B01F3/04014 , B01F3/04049 , B01F3/04078 , B01F5/0268 , B01F5/04 , B01F5/0473 , B01F5/0485 , B01F5/0619 , B01F15/0254
Abstract: A mixer is disclosed for use in a reductant dosing system. The mixer may have an impingement floor located within an intended fluid injection path and generally parallel with a flow direction through the mixer. The mixer may also have a first side wall connected along a lengthwise edge of the impingement floor, a second side wall connected along an opposing lengthwise edge of the impingement floor, and a plurality of shelves extending between the first and second side walls. The plurality of shelves each may include a plurality of vanes that promote mixing of an injected fluid. One or more of the plurality of shelves may extend different distances upstream opposite the flow direction.
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公开(公告)号：US11781464B1
公开(公告)日：2023-10-10
申请号：US17657576
申请日：2022-03-31
Applicant: Caterpillar Inc.
Inventor： Frank Lombardi , Baoyong Liu , Urvish Joshi , Austin Bierle , Jay Venkataraghavan , Kent Anthony Schonert
CPC classification number: F01N11/00 , F01N3/208 , F01N9/005 , F01N9/007 , F01N11/007 , F01N2550/02 , F01N2550/05 , F01N2900/04 , F01N2900/0406 , F01N2900/0408 , F01N2900/0412 , F01N2900/06 , F01N2900/08 , F01N2900/1402 , F01N2900/1602 , F01N2900/1614 , F01N2900/18 , F01N2900/1814
Abstract: A method for estimating a quality of reductant in an engine aftertreatment system for an engine using a virtual sensor, the method comprising: determining whether an enablement condition is met, wherein the enablement condition is one or more of: a reductant fill condition determined based on data received from one or more float sensors associated with the engine; a machine start condition determined based on machine speed data obtained from a speed sensor associated with the engine; and/or a rationality check condition determined based on data associated with a fault of one or more sensors associated with the engine; upon determining that the enablement condition is met, receiving NOx measurement data obtained from at least one NOx sensor; generating a reductant quality value based on the NOx measurement data; and outputting a reductant quality determination based on the reductant quality value.
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公开(公告)号：US09587545B2
公开(公告)日：2017-03-07
申请号：US14605500
申请日：2015-01-26
Applicant: Caterpillar Inc.
Inventor： Jay Venkataraghavan
CPC classification number: F01N3/2892 , B01F3/04021 , B01F5/0473 , B01F5/0616 , B01F5/0618 , B01F13/1016 , B01F2005/0636 , B01F2005/0638 , B01F2005/0639 , F01N3/2066 , Y02T10/24
Abstract: A fluid delivery system includes a flow agitator connected to a gas conduit and disposed within an internal cavity of the conduit at an upstream location with respect to a fluid injector. The flow agitator operates to separate the gas flow passing through the conduit during operation into a bypass flow, a control flow, and a main flow, such that a recombination of the bypass flow, the control flow, and the main flow downstream of the flow agitator creates an oscillation in the gas flow that also encompasses the fluid delivered into the internal cavity by the injector.
Abstract translation: 流体输送系统包括连接到气体导管并且相对于流体注射器在上游位置处设置在导管的内部空腔内的流动搅拌器。 流动搅拌器操作以在操作期间将通过导管的气流分离成旁路流，控制流和主流，使得旁路流，控制流和主流在流动下游的复合 搅拌器在气流中产生振荡，气流还包括由喷射器输送到内腔中的流体。
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公开(公告)号：US10787945B2
公开(公告)日：2020-09-29
申请号：US15992628
申请日：2018-05-30
Applicant: Caterpillar Inc.
Inventor： Dustin I. Landwehr , Jay Venkataraghavan
Abstract: A dosing control unit (DCU) may receive operational information associated with a selective catalytic reduction (SCR) aftertreatment system. The DCU may generate a deposit prediction, associated with the SCR aftertreatment system, based on the operational information. The deposit prediction may include information that identifies a predicted size of a deposit in a dosing zone of a plurality of dosing zones associated with the SCR aftertreatment system. The deposit prediction may be generated using a deposit growth model associated with predicting sizes of deposits in the plurality of dosing zones. The DCU may select a dosing scheme, of a plurality of dosing schemes, based on the deposit prediction. The DCU may implement the selected dosing scheme in order to cause diesel exhaust fluid (DEF) to be dosed in the plurality of dosing zones in accordance with the selected dosing scheme.
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Patent Agency Ranking
公开(公告)号：US20190368400A1
公开(公告)日：2019-12-05
申请号：US15992628
申请日：2018-05-30
Applicant: Caterpillar Inc.
Inventor： Dustin I. Landwehr , Jay Venkataraghavan
Abstract: A dosing control unit (DCU) may receive operational information associated with a selective catalytic reduction (SCR) aftertreatment system. The DCU may generate a deposit prediction, associated with the SCR aftertreatment system, based on the operational information. The deposit prediction may include information that identifies a predicted size of a deposit in a dosing zone of a plurality of dosing zones associated with the SCR aftertreatment system. The deposit prediction may be generated using a deposit growth model associated with predicting sizes of deposits in the plurality of dosing zones. The DCU may select a dosing scheme, of a plurality of dosing schemes, based on the deposit prediction. The DCU may implement the selected dosing scheme in order to cause diesel exhaust fluid (DEF) to be dosed in the plurality of dosing zones in accordance with the selected dosing scheme.
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公开(公告)号：US20160215672A1
公开(公告)日：2016-07-28
申请号：US14605500
申请日：2015-01-26
Applicant: Caterpillar Inc.
Inventor： Jay Venkataraghavan
CPC classification number: F01N3/2892 , B01F3/04021 , B01F5/0473 , B01F5/0616 , B01F5/0618 , B01F13/1016 , B01F2005/0636 , B01F2005/0638 , B01F2005/0639 , F01N3/2066 , Y02T10/24
Abstract: A fluid delivery system includes a flow agitator connected to a gas conduit and disposed within an internal cavity of the conduit at an upstream location with respect to a fluid injector. The flow agitator operates to separate the gas flow passing through the conduit during operation into a bypass flow, a control flow, and a main flow, such that a recombination of the bypass flow, the control flow, and the main flow downstream of the flow agitator creates an oscillation in the gas flow that also encompasses the fluid delivered into the internal cavity by the injector.
Abstract translation: 流体输送系统包括连接到气体导管并且相对于流体注射器在上游位置处设置在导管的内部空腔内的流动搅拌器。 流动搅拌器操作以在操作期间将通过导管的气流分离成旁路流，控制流和主流，使得旁路流，控制流和主流在流动下游的复合 搅拌器在气流中产生振荡，气流还包括由喷射器输送到内腔中的流体。
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公开(公告)号：US20130160570A1
公开(公告)日：2013-06-27
申请号：US13662684
申请日：2012-10-29
Applicant: Caterpillar Inc.
Inventor： Sudhindra K. Ayanji , Greg Weyeneth , Jay Venkataraghavan
IPC: G01L1/00
CPC classification number: G01L5/0038
Abstract: A solenoid force measurement system includes: a first plate having an opening for receiving a solenoid; a second plate separated from the first plate by an air-gap; a force detection unit located within the second plate for measuring a force exerted by the solenoid; a height control device coupled to the second plate the height control device configured to adjust the size of the air-gap.
Abstract translation: 螺线管力测量系统包括：具有用于容纳螺线管的开口的第一板; 通过气隙与第一板隔开的第二板; 位于所述第二板内的用于测量由所述螺线管施加的力的力检测单元; 高度控制装置，其联接到所述第二板，所述高度控制装置被配置为调节所述气隙的尺寸。
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公开(公告)号：US11945401B2
公开(公告)日：2024-04-02
申请号：US17657589
申请日：2022-03-31
Applicant: Caterpillar Inc.
Inventor： Jay Venkataraghavan , Baoyong Liu , Urvish Joshi , Kevin Lloyd Dea
CPC classification number: B60R25/101 , G07C5/0816 , G08B29/046
Abstract: A systems for detecting level sensor malfunction or tampering based on reductant consumption and determining when to initiate a quality check of reductant used in an aftertreatment system are disclosed. The system comprises a memory storing instructions and a processor executing the instructions to perform a process including: receiving dosing data associated with an amount of DEF supplied to the aftertreatment system; receiving tank level data from a level sensor in a DEF tank; comparing the dosing data with the tank level data; and based on the comparison: initiating, by the one or more processors, a quality check; and/or determining, by the one or more processors, a possible error requiring further diagnostics; and causing to present, by the one or more processors, an indication that the quality check is being initiated and/or that a possible error requires further diagnostics on a display.
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公开(公告)号：US08943906B2
公开(公告)日：2015-02-03
申请号：US13662684
申请日：2012-10-29
Applicant: Caterpillar Inc.
Inventor： Sudhindra K. Ayanji , Greg Weyeneth , Jay Venkataraghavan
CPC classification number: G01L5/0038
Abstract: A solenoid force measurement system includes: a first plate having an opening for receiving a solenoid; a second plate separated from the first plate by an air-gap; a force detection unit located within the second plate for measuring a force exerted by the solenoid; a height control device coupled to the second plate the height control device configured to adjust the size of the air-gap.
Abstract translation: 螺线管力测量系统包括：具有用于容纳螺线管的开口的第一板; 通过气隙与第一板隔开的第二板; 位于所述第二板内的用于测量由所述螺线管施加的力的力检测单元; 高度控制装置，其联接到所述第二板，所述高度控制装置被配置为调节所述气隙的尺寸。
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