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公开(公告)号：US10001042B2
公开(公告)日：2018-06-19
申请号：US14589339
申请日：2015-01-05
Applicant: Cummins Inc.
Inventor： Phanindra V. Garimella , Andrew W. Osburn
IPC: F01N3/20
CPC classification number: F01N3/208 , F01N2560/021 , F01N2560/026 , F01N2560/14 , F01N2610/02 , F01N2900/0404 , F01N2900/0601 , F01N2900/1602 , F01N2900/1616 , F01N2900/1621 , F01N2900/1622 , Y02T10/24
Abstract: Systems, methods and apparatus disclosed that include an internal combustion engine and an exhaust system that includes an exhaust aftertreatment system with an SCR catalyst. A NOx sensor downstream of the SCR catalyst is provided along with techniques for estimating an amount of NOx and NH3 at the tailpipe to decouple the impact of cross-sensitivity of the NOx sensor to NOx and NH3. Feedback control of the reductant dosing amount based on these estimates is also provided.
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公开(公告)号：US20170234245A1
公开(公告)日：2017-08-17
申请号：US15585475
申请日：2017-05-03
Applicant: Cummins Inc.
Inventor： C. Larry Bruner , Phanindra V. Garimella , Geomy George , Timothy P. Lutz , J. Steven Kolhouse , Edmund P. Hodzen , Robert Charles Borregard , Mark A. Rosswurm , Axel Otto zur Loye
CPC classification number: F02D19/081 , F02D19/0628 , F02D19/0647 , F02D19/10 , F02D19/105 , F02D35/027 , F02D41/0025 , F02D41/0027 , F02D41/005 , F02D41/1498 , F02D41/221 , F02D2041/228 , F02D2200/0611 , Y02T10/36 , Y02T10/40
Abstract: Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fuelling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fuelling amounts are controlled to improve operational outcomes of the duel fuel engine.
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公开(公告)号：US20170089273A1
公开(公告)日：2017-03-30
申请号：US15278330
申请日：2016-09-28
Applicant: Cummins Inc.
Inventor： Robert J. Thomas , Axel Otto Zur Loye , Timothy P. Lutz , Christopher Pollitt , Phanindra V. Garimella
CPC classification number: F02D19/081 , F02D19/0642 , F02D35/027 , F02D41/0025 , F02D41/0027 , F02D41/2416 , F02D41/2422 , F02D41/401 , F02D41/402 , F02D2041/1433 , F02D2200/1004 , F02D2250/31 , Y02T10/36
Abstract: Apparatuses, methods and systems for controlling operation of dual fuel engines are disclosed. One embodiment is a method for controlling operation of a dual fuel engine based upon a combustion index value. The combustion index may be empirically determined to provide desired engine operation at a plurality of ratios of gaseous fuel and liquid fuel. The desired engine operation may include a number of criteria including, for examiner an engine knock criterion and/or an exhaust emissions criterion. The combustion index value may be determined during operation of the engine based upon measured, estimated or predicted engine operating parameters. The combustion index value may be utilized to interpolate between a first engine operating map for a first ratio of gaseous fuel and liquid fuel and a second engine operating map for a second ratio of gaseous fuel and liquid fuel.
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公开(公告)号：US20150361845A1
公开(公告)日：2015-12-17
申请号：US14302310
申请日：2014-06-11
Applicant: Cummins Inc.
Inventor： Phanindra V. Garimella , Ming-Feng Hsieh
CPC classification number: F01N3/208 , F01N9/00 , F01N11/00 , F01N11/002 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/02 , F01N2610/146 , F01N2900/0404 , F01N2900/0408 , F01N2900/0411 , F01N2900/0412 , F01N2900/1402 , F01N2900/1404 , F01N2900/1602 , F01N2900/1616 , F01N2900/1621 , Y02T10/24
Abstract: A system and method for using feed-back information, such as, for example, system-out NOx levels, to provide for closed-loop selective catalytic reduction control. A reference generation module may adjust an ideal SCR conversion value based on a quantity of reductant slippage from the engine system so as to provide an adjusted ideal SCR conversion efficiency value. The adjusted ideal SCR conversion efficiency value may then be used to generate a reductant to NOx ratio that corresponds to an ideal reductant dosing command. The ideal reductant dosing command may be further adjusted to account for low frequency variations, such as, low frequency variations in the SCR system, to generate an adjusted ideal reductant dosing command. The adjusted ideal reductant dosing command may be further adjusted to reflect high frequency variations in the SCR system, before a final reductant dosing command is generated for a reductant injector.
Abstract translation: 使用反馈信息（例如，系统输出的NOx水平）来提供闭环选择性催化还原控制的系统和方法。 参考生成模块可以基于来自发动机系统的还原剂滑动量来调整理想的SCR转换值，以提供经调整的理想SCR转换效率值。 然后可以使用经调节的理想SCR转换效率值来产生对应于理想的还原剂配量命令的还原剂的NOx比。 可以进一步调节理想的还原剂配量命令以考虑低频变化，例如SCR系统中的低频变化，以产生经调节的理想还原剂配料命令。 在为还原剂注射器生成最终的还原剂配量命令之前，可以进一步调整调节的理想的还原剂配量命令以反映SCR系统中的高频变化。
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公开(公告)号：US11053881B2
公开(公告)日：2021-07-06
申请号：US15762469
申请日：2015-10-14
Applicant: CUMMINS INC.
Inventor： Phanindra V. Garimella , Paul V. Moonjelly , Edmund P. Hodzen , Ming-feng Hsieh , Gayatri Adi , Gokul Vishwanathan
Abstract: A system for control of an internal combustion system having subsystems, each with different response times. Subsystems may include a fuel system, an air handling system, and an aftertreatment system, each being operated in response to a set of reference values generated by a respective target determiner. Calibration of each subsystem may be performed independently. The fuel system is controlled at a first time constant. The air handling system is controlled on the order of a second time constant slower than the first time constant. The aftertreatment system is controlled on the order of a third time constant slower than the second time constant. A subsystem manager is optionally in operative communication with each target determiner to coordinate control. Generally, dynamic parameters from slower subsystems are treated as static parameters when determining reference values for controlling a faster subsystem.
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Patent Agency Ranking
公开(公告)号：US11035310B2
公开(公告)日：2021-06-15
申请号：US15762461
申请日：2015-10-14
Applicant: CUMMINS INC.
Inventor： Phanindra V. Garimella , Paul V. Moonjelly , Edmund P. Hodzen , Ming-feng Hsieh , Gayatri Adi , Gokul Vishwanathan
Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.
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公开(公告)号：US10815913B2
公开(公告)日：2020-10-27
申请号：US15585475
申请日：2017-05-03
Applicant: Cummins Inc.
Inventor： C. Larry Bruner , Phanindra V. Garimella , Geomy George , Timothy P. Lutz , J. Steven Kolhouse , Edmund P. Hodzen , Robert Charles Borregard , Mark A. Rosswurm , Axel Otto zur Loye
Abstract: Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fuelling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fuelling amounts are controlled to improve operational outcomes of the duel fuel engine.
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公开(公告)号：US20180266343A1
公开(公告)日：2018-09-20
申请号：US15762465
申请日：2015-10-14
Applicant: CUMMINS INC.
Inventor： Phanindra V. Garimella , Paul V. Moonjelly , Edmund P. Hodzen , Ming-feng Hsieh , Gayatri Adi , Gokul Vishwanathan
CPC classification number: F02D41/0047 , F02D35/02 , F02D35/025 , F02D41/0002 , F02D41/0007 , F02D41/1446 , F02D41/1454 , F02D41/1462 , F02D41/2432 , F02D41/3836 , F02D41/401 , F02D2041/1412 , F02D2041/1433 , F02D2200/101 , F02D2250/31 , F02D2250/36 , Y02T10/144 , Y02T10/42 , Y02T10/44 , Y02T10/47
Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.
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公开(公告)号：US09441519B2
公开(公告)日：2016-09-13
申请号：US14302338
申请日：2014-06-11
Applicant: Cummins, Inc.
Inventor： Michael Haas , Phanindra V. Garimella , Ming-Feng Hsieh
CPC classification number: F01N3/208 , F01N9/005 , F01N2560/026 , F01N2900/0404 , F01N2900/0411 , F01N2900/0601 , F01N2900/1402 , F01N2900/1411 , F01N2900/1602 , F01N2900/1621 , Y02T10/24 , Y02T10/47
Abstract: Methods for adapting system variation for an engine system having an after-treatment system. Measured characteristics of the after-treatment system may be used to predict a model value(s) that is compared to a measured value(s) of the after-treatment system to provide a comparison value. Information relating to high frequency uncertainties in characteristics of the after-treatment system are removed from the comparison value to provide an estimated system variation value. The estimated system variation value may then be used to adapt a system command of a controller. Further, information relating to high frequency uncertainties in characteristics of the after-treatment system may be used by a feed-back controller to determine high frequency adaptation values that may also be used to adjust the system command. The inclusion of the estimated system variation may eliminate reliance on the feed-back controller to provide system adjustments for both high and low frequency uncertainties.
Abstract translation: 适用于具有后处理系统的发动机系统的系统变化的方法。 后处理系统的测量特征可以用于预测与后处理系统的测量值进行比较以提供比较值的模型值。 关于后处理系统的特性的高频不确定性的信息从比较值中除去，以提供估计的系统变化值。 然后可以使用估计的系统变化值来适应控制器的系统命令。 此外，与后处理系统的特性中的高频不确定性相关的信息可由反馈控制器用于确定也可用于调整系统命令的高频适配值。 包括估计的系统变化可以消除对反馈控制器的依赖，以提供高频和低频不确定性的系统调整。
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公开(公告)号：US20150226102A1
公开(公告)日：2015-08-13
申请号：US14179887
申请日：2014-02-13
Applicant: Cummins Inc.
Inventor： Ming-Feng Hsieh , Michael Haas , Phanindra V. Garimella
CPC classification number: F01N3/208 , B01D53/9418 , B01D53/9495 , B01D2251/2062 , F01N3/106 , F01N11/00 , F01N2560/026 , F01N2560/14 , F01N2610/02 , F01N2610/146 , Y02T10/24 , Y02T10/47
Abstract: A selective catalytic reduction (SCR) catalyst is disposed in an exhaust gas system of an internal combustion engine. A reductant injector is coupled to the exhaust gas stream at a position upstream of the SCR catalyst, and first and second NOx sensors provide NOx measurements upstream of and downstream of the SCR catalyst, respectively. A system and method is disclosed for operating the system to determine a NOx amount and/or a NH3 slip amount downstream of the SCR catalyst by decoupling NOx-NH3 measurements from the output of the second NOx sensor to provide control of the reductant injection amount.
Abstract translation: 选择性催化还原（SCR）催化剂设置在内燃机的排气系统中。 还原剂喷射器在SCR催化剂上游的位置与废气流相连，第一和第二NOx传感器分别在SCR催化剂的上游和下游提供NOx测量。 公开了一种系统和方法，用于操作该系统以通过从第二NOx传感器的输出中分离NOx-NH 3测量值来确定还原剂喷射量的控制来确定SCR催化剂下游的NOx量和/或NH3滑移量。
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