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1.发明授权公开(公告)号：US11492992B2
公开(公告)日：2022-11-08
申请号：US16740592
申请日：2020-01-13
Applicant: Cummins Inc.
Inventor： Shashank Tamaskar , Kartavya Neema , Carlos Alcides Lana , Govindarajan Kothandaraman
Abstract: One embodiment is a system comprising an engine including a dedicated EGR cylinder configured to provide EGR to the engine via an EGR loop, a non-dedicated cylinder, a plurality of injectors, an ignition system including a plurality of spark plugs, an intake throttle, and an electronic control system. The electronic control system is configured to control combustion during transient operation of the engine by determining one or more combustion control parameters compensating for variation of one or more of inert matter, unburned air and unburned fuel in EGR output by the dedicated EGR cylinder during transient operation of the engine, and an effect of the EGR loop on inert matter, unburned air and unburned fuel provided to the plurality of cylinders, and controlling operation of at least one of the throttle, the ignition system and the plurality of injectors in response to at least one of the one or more combustion control parameters.
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公开(公告)号：US20200370454A1
公开(公告)日：2020-11-26
申请号：US16989109
申请日：2020-08-10
Applicant: Cummins Inc.
Inventor： Aniket Gupta , Michael J. Cunningham , Michael Haas , Govindarajan Kothandaraman
Abstract: A method includes acquiring nitrogen oxide (NOx) data indicative of a first amount of NOx in an exhaust flow exiting an engine and a second amount of NOx in the exhaust flow exiting an exhaust aftertreatment system coupled to the engine where the exhaust aftertreatment system including a selective catalytic reduction (SCR) system including a SCR catalyst; determining a NOx conversion efficiency fault is present within the exhaust aftertreatment system based on the first amount of NOx and the second amount of NOx; monitoring an actual amount of NOx in the exhaust flow downstream of the SCR catalyst; determining an expected amount of NOx downstream of the SCR catalyst; and determining the SCR catalyst is responsible for the NOx conversion efficiency fault in response to the actual amount of NOx differing from the expected amount of NOx by more than a threshold amount.
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公开(公告)号：US10738671B2
公开(公告)日：2020-08-11
申请号：US15866776
申请日：2018-01-10
Applicant: Cummins, Inc.
Inventor： Aniket Gupta , Michael J. Cunningham , Michael Haas , Govindarajan Kothandaraman
Abstract: A method includes interpreting NOx data indicative of an amount of NOx exiting an engine and an amount of NOx exiting an exhaust aftertreatment system coupled to the engine, determining a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system, and determining at least one of a selective catalytic reduction (SCR) catalyst of the exhaust aftertreatment system and a diesel particulate filter having a coating of a SCR reaction catalyst (DPF-SCR) of the exhaust aftertreatment system are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.
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公开(公告)号：US20170051654A1
公开(公告)日：2017-02-23
申请号：US14830112
申请日：2015-08-19
Applicant: Cummins, Inc.
Inventor： Aniket Gupta , Michael J. Cunningham , Michael Haas , Govindarajan Kothandaraman
CPC classification number: F01N3/035 , F01N3/0835 , F01N3/0842 , F01N3/103 , F01N3/2066 , F01N11/00 , F01N13/0093 , F01N2550/02 , F01N2560/021 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/02 , F01N2900/1402 , F01N2900/1616 , Y02T10/24 , Y02T10/47
Abstract: An apparatus includes a nitrogen oxide (NOx) module and a selective catalytic reduction (SCR) diagnostic module. The NOx module is in exhaust gas communication with an exhaust flow of an exhaust aftertreatment system from an engine. The NOx module is structured to interpret NOx data indicative of an amount of NOx exiting the engine and an amount of NOx exiting the exhaust aftertreatment system, and determine a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system. The SCR diagnostic module is structured to determine at least one of a SCR catalyst and a diesel particulate filter including a coating of a SCR reaction catalyst (DPF-SCR) are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.
Abstract translation: 一种装置包括氮氧化物（NOx）模块和选择性催化还原（SCR）诊断模块。 NOx模块与来自发动机的废气后处理系统的废气排气连通。 NOx模块被构造为解释表示从发动机排出的NOx的量的NO x数据和排出后处理系统的NOx的量，并且基于从发动机排出的NOx的量和数量来确定NOx转化效率的故障 的NOx排出后处理系统。 SCR诊断模块被构造成确定包括SCR反应催化剂（DPF-SCR）的涂层的SCR催化剂和柴油颗粒过滤器中的至少一个基于还原剂滑移中的至少一种负责NOx转化效率故障 数量和跨越SCR催化剂和DPF-SCR中的至少一个的NOx转化值。
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公开(公告)号：US20150369197A1
公开(公告)日：2015-12-24
申请号：US14307886
申请日：2014-06-18
Applicant: Cummins, Inc.
Inventor： Michael J. Cunningham , Govindarajan Kothandaraman , Nassim Khaled , Yu Liu , Aniket Gupta
IPC: F02N11/08
CPC classification number: F02N11/0803 , F02N11/0818 , F02N11/0822 , F02N11/0829 , F02N2200/08 , F02N2200/0814 , F02N2200/0815 , F02N2300/2002 , Y02T10/48
Abstract: Disclosed are methods, systems, and computer-readable mediums for predicting a driving intention of a driver of a vehicle. A sequence comprising a plurality of indicators is detected, where each indicator suggests intent to drive a vehicle. A separation time between each of the indicators of the sequence is determined. The sequence and determined separation times are compared to historical data, where the historical data comprises data related to previously stored separation times of the sequence. Based on the comparison, a confidence level that an engine of the vehicle will be started is determined. Based on the confidence level, a feature of the vehicle is activated.
Abstract translation: 公开了用于预测车辆驾驶员的驾驶意图的方法，系统和计算机可读介质。 检测包括多个指示符的序列，其中每个指示符表示意图驱动车辆。 确定序列的每个指示符之间的间隔时间。 将序列和确定的分离时间与历史数据进行比较，其中历史数据包括与先前存储的序列分离时间相关的数据。 基于比较，确定车辆的发动机将启动的置信水平。 基于置信水平，车辆的特征被激活。
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Patent Agency Ranking
公开(公告)号：US09086025B2
公开(公告)日：2015-07-21
申请号：US13646891
申请日：2012-10-08
Applicant: Cummins Inc.
Inventor： Ashwin Vyas , Vivek A. Sujan , Andrew W. Osburn , Abdul Ofoli , Govindarajan Kothandaraman , Karim Azizou
CPC classification number: F02D41/0002 , F02D41/18 , F02D41/222 , F02D41/2474
Abstract: Systems and methods for correcting mass airflow sensor drift include an operation conditions module to interpret a base calibration function, a MAF sensor input value, and a current operating condition. A MAF correction module determines an expected MAF value in response to the current operating condition and a predetermined operating condition. The MAF correction module will also determine an adjusted MAF value in response to the expected MAF value, the base calibration function, and the MAF sensor input value. A MAF reporting module is structured to provide the adjusted MAF value.
Abstract translation: 用于校正质量气流传感器漂移的系统和方法包括解释基准校准功能，MAF传感器输入值和当前操作条件的操作条件模块。 MAF校正模块响应于当前操作条件和预定操作条件确定预期MAF值。 MAF校正模块还将根据预期的MAF值，基准校准功能和MAF传感器输入值确定经调整的MAF值。 MAF报告模块的结构是提供调整后的MAF值。
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公开(公告)号：US11725564B2
公开(公告)日：2023-08-15
申请号：US16989109
申请日：2020-08-10
Applicant: Cummins Inc.
Inventor： Aniket Gupta , Michael J. Cunningham , Michael Haas , Govindarajan Kothandaraman
CPC classification number: F01N11/00 , F01N3/035 , F01N3/0835 , F01N3/0842 , F01N3/103 , F01N3/2066 , F01N13/0093 , F01N2550/02 , F01N2560/021 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/02 , F01N2900/1402 , F01N2900/1616 , F01N2900/1621 , Y02T10/12 , Y02T10/40
Abstract: A method includes acquiring nitrogen oxide (NOx) data indicative of a first amount of NOx in an exhaust flow exiting an engine and a second amount of NOx in the exhaust flow exiting an exhaust aftertreatment system coupled to the engine where the exhaust aftertreatment system including a selective catalytic reduction (SCR) system including a SCR catalyst; determining a NOx conversion efficiency fault is present within the exhaust aftertreatment system based on the first amount of NOx and the second amount of NOx; monitoring an actual amount of NOx in the exhaust flow downstream of the SCR catalyst; determining an expected amount of NOx downstream of the SCR catalyst; and determining the SCR catalyst is responsible for the NOx conversion efficiency fault in response to the actual amount of NOx differing from the expected amount of NOx by more than a threshold amount.
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公开(公告)号：US11549454B2
公开(公告)日：2023-01-10
申请号：US17315560
申请日：2021-05-10
Applicant: Cummins Inc.
Inventor： Carlos Alcides Lana , David J. Stroh , Samuel C. Geckler , Marten H. Dane , Anthony Kyle Perfetto , Karthik Kappaganthu , Govindarajan Kothandaraman
IPC: F02D41/00 , F02M26/43 , F02D21/08 , F02B37/18 , F02B37/24 , F02D13/02 , F02P5/15 , F02M26/13 , F02M26/37 , F02M26/05 , F02M26/06
Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary EGR cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the amount of recirculated exhaust gas in a charge flow in response to EGR fraction deviation conditions.
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公开(公告)号：US20220381166A1
公开(公告)日：2022-12-01
申请号：US17884546
申请日：2022-08-09
Applicant: Cummins Inc.
Inventor： Govindarajan Kothandaraman , Lyle E. Kocher , David M. Barnes , Scott Robert Bardakjy , J. Steven Kolhouse
Abstract: Systems, devices, and methods are disclosed that during cylinder deactivation, including skipfire, at low engines speeds and low engine loads maintain adequate oil pressure of valvetrain components or hardware required for CDA and/or skipfire operation.
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公开(公告)号：US20210372312A1
公开(公告)日：2021-12-02
申请号：US17330062
申请日：2021-05-25
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： Jennifer Kay Light-Holets , J. Steven Kolhouse , Govindarajan Kothandaraman , Carlos Alcides Lana
Abstract: Systems and apparatuses include a controller including at least one processor coupled to a memory storing instructions that, when executed by the at least one processor, causes the controller to: determine a set of emission regulations based on a location of a vehicle; determine a target temperature of a catalyst of an aftertreatment system of the vehicle in response to the determined set of emission regulations; compare a current temperature of the catalyst to the determined target temperature; and in response to the current temperature of the catalyst being below the determined target temperature, provide a thermal management command to increase the catalyst temperature toward the determined target temperature.
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