-
公开(公告)号：US20190162096A1
公开(公告)日：2019-05-30
申请号：US16320844
申请日：2017-07-27
申请人： Cummins Inc.
发明人： John L. Hoehne , Paul Daniel Borisuk , Boopathi Singalandapuram Mahadevan , Joshua A. Lantz , Jeffrey W. Lewis , Snita Navnith Menon
IPC分类号： F01N3/20
摘要： Systems and methods for removing deposit in an aftertreatment system for an engine are disclosed herein. The method comprises determining an amount of deposits accumulated in the aftertreatment system, determining combustion targets for the engine in response to determining the amount of deposits exceeds a deposit threshold, and modulating an air mass flow for the engine based on the determined combustion targets. The air mass flow can be modulated by changing the position of the wastegate or the geometry of the variable geometry turbine (VGT).
-
2.发明授权Selective cylinder deactivation apparatus and method for high power diesel engines 有权大功率柴油发动机选择性气缸停用装置及方法公开(公告)号：US09587567B2
公开(公告)日：2017-03-07
申请号：US14320061
申请日：2014-06-30
申请人： Cummins Inc.
CPC分类号： F02D17/02 , F02D41/0082 , F02D41/0087 , F02D41/38 , F02D2200/0602 , F02D2200/1002 , F02D2200/101 , F02D2250/36 , F02D2250/38
摘要： Various embodiments relate to a method of operating an engine system with injectors having nozzle sac volume. The engine system may be a four-stroke, high power engine having a high-pressure common-rail injection system. A number of engine cylinders to fire is selected based on a fuel injection quantity per selected engine cylinder such that a nitrogen oxides (NOx) emission is less than a first predetermined threshold and a smoke value is less than a second predetermined threshold. The fuel injection quantity per cylinder may be higher than a nominal fuel injection quantity to improve fuel injector spray characteristics. The exhaust can be mixed with fresh air blowout from deactivated cylinders to further reduce smoke value. The engine system is operated with a firing pattern for the selected number of cylinders to fire.
摘要翻译： 各种实施例涉及使用具有喷嘴囊体积的喷射器操作发动机系统的方法。 发动机系统可以是具有高压共轨喷射系统的四冲程高功率发动机。 基于每个选择的发动机气缸的燃料喷射量来选择多个发动机气缸，使得氮氧化物（NOx）排放小于第一预定阈值，烟值小于第二预定阈值。 每个气缸的燃料喷射量可以高于标称燃料喷射量，以改善燃料喷射器喷射特性。 废气可以从停用的汽缸与新鲜的空气喷射混合，以进一步降低烟雾值。 发动机系统使用点火模式操作所选择的气缸数量。
-
公开(公告)号：US11434797B2
公开(公告)日：2022-09-06
申请号：US16608295
申请日：2018-04-25
申请人： Cummins Inc.
发明人： Todd C. Bouws , Ankit Raghunath Lad , Joshua A. Lantz , Boopathi Singalandapuram Mahadevan , Ian W. McGiffen , Douglas A. Roxbury
摘要： Systems and methods for removing accumulated soot in an aftertreatment system for an engine are disclosed herein. A method includes receiving an indication that an engine of a vehicle has been operating in a low load condition for more than a predefined amount of time; in response, determining an adsorption rate of soot in an exhaust aftertreatment system of the vehicle; determining an adsorption amount of soot based on the adsorption rate for a predefined amount of time; comparing the adsorption amount to a predefine adsorption amount limit; and in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating an exhaust cleaning event to remove at least some of the accumulated soot in the exhaust aftertreatment system.
-
4.发明申请公开(公告)号：US20200095912A1
公开(公告)日：2020-03-26
申请号：US16608295
申请日：2018-04-25
申请人： Cummins Inc.
发明人： Todd C. Bouws , Ankit Raghunath Lad , Joshua A. Lantz , Boopathi Singalandapuram Mahadevan , Ian W. McGiffen , Douglas A. Roxbury
摘要： Systems and methods for removing accumulated soot in an aftertreatment system for an engine are disclosed herein. A method includes receiving an indication that an engine of a vehicle has been operating in a low load condition for more than a predefined amount of time; in response, determining an adsorption rate of soot in an exhaust aftertreatment system of the vehicle; determining an adsorption amount of soot based on the adsorption rate for a predefined amount of time; comparing the adsorption amount to a predefine adsorption amount limit; and in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating an exhaust cleaning event to remove at least some of the accumulated soot in the exhaust aftertreatment system.
-
5.发明公开公开(公告)号：US20240133326A1
公开(公告)日：2024-04-25
申请号：US18402682
申请日：2024-01-02
申请人： Cummins Inc.
发明人： Todd C. Bouws , Ankit Raghunath Lad , Joshua A. Lantz , Boopathi Singalandapuram Mahadevan , Ian W. McGiffen , Douglas A. Roxbury
CPC分类号： F01N3/025 , F01N3/24 , F01N9/002 , F01N13/009 , F02D41/04 , F02D41/16 , F01N2900/1606 , F02D2200/0812
摘要： Systems and methods for removing soot in an aftertreatment system are disclosed. A method includes: receiving data regarding an exhaust gas flow rate of exhaust gas; receiving data regarding a selective catalytic reduction (SCR) inlet temperature; determining an adsorption amount of soot in the exhaust aftertreatment system based on the exhaust gas flow rate of the exhaust gas and the SCR inlet temperature; comparing the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount of soot exceeding the predefined adsorption amount limit; initiating an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving exhaust gas data during the exhaust cleaning event; determining a desorption amount of soot based on the exhaust gas data; comparing the desorption amount of soot to a predefined desorption limit; and ceasing the exhaust cleaning event based on the comparison.
-
公开(公告)号：US20210285353A1
公开(公告)日：2021-09-16
申请号：US17214524
申请日：2021-03-26
申请人： Cummins Inc.
发明人： John L. Hoehne , Paul Daniel Borisuk , Boopathi Singalandapuram Mahadevan , Joshua A. Lantz , Jeffrey W. Lewis , Snita Navnith Menon
摘要： A controller for removing deposits in a vehicle is disclosed. The controller includes at least one processor and a memory storing instructions therein that, when executed by the at least one processor, cause the at least one processor to: determine an amount of deposits accumulated in the vehicle based on an amount of time; determine a combustion target for the vehicle in response to determining that the amount of deposits exceeds a deposit threshold; and modulate a fluid flow of the vehicle based on the determined combustion target.
-
公开(公告)号：US10533514B2
公开(公告)日：2020-01-14
申请号：US15578924
申请日：2017-06-02
申请人： CUMMINS INC.
发明人： Phanindra V. Garimella , John L. Hoehne , Ian W. McGiffen , Chandan Mahato , Boopathi Singalandapuram Mahadevan , Pagalavan Mathari Bakthavatsalam , Travis Alva Anderson
摘要： A method of controlling a fuel injector comprises measuring a pressure in a cylinder of an engine with a pressure sensor and determining at least one of a crank angle and a crank speed with a crank sensor. The method also comprises calculating a net indicated mean effective pressure of the cylinder from the measured value of the pressure sensor and the determined value of the crank sensor. Also, the method comprises adjusting a fueling parameter of a fuel injector for the cylinder in response to the difference between the calculated net indicated mean effective pressure and a reference mean effective pressure indicates a change in power of the engine. Alternatively, the method may adjust the fueling parameter based on a power feedback signal for the engine.
-
公开(公告)号：US20180149105A1
公开(公告)日：2018-05-31
申请号：US15873972
申请日：2018-01-18
申请人： Cummins Inc.
发明人： John L. Hoehne , Ian W. McGiffen , Chandan Mahato , Paul Daniel Borisuk , Boopathi Singalandapuram Mahadevan
IPC分类号： F02D41/14 , F02D41/02 , F02D41/00 , F02M26/05 , F02B37/18 , F02B29/04 , F01N11/00 , F01N3/20
CPC分类号： F02D41/1446 , F01N3/2066 , F01N11/002 , F01N2430/00 , F01N2900/1404 , F01N2900/1406 , F01N2900/1602 , F02B29/0406 , F02B37/00 , F02B37/186 , F02D41/0007 , F02D41/0245 , F02D2200/0406 , F02D2200/0802 , F02D2250/36 , F02M26/05 , Y02T10/144 , Y02T10/146 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： A system and method for controlling a temperature of an exhaust gas at an inlet of a selective catalytic reduction system during at least certain low air density conditions. The system may detect an air density value upstream of an internal combustion engine of an engine system, such as, for example, at an inlet of a compressor. Using the detected air density, one of a plurality of relationships between an engine speed and an outputted engine power, as a function of the detected air density value, may be selected for use in determining what combination of engine speed(s) and/or engine power(s) will produce an exhaust gas that is within a target exhaust gas temperature. Using the selected relationship, at least one of the engine speed and the engine power may be adjusted to at least assist in attaining the target exhaust gas temperature.
-
公开(公告)号：US11898480B2
公开(公告)日：2024-02-13
申请号：US17902241
申请日：2022-09-02
申请人： Cummins Inc.
发明人： Todd C. Bouws , Ankit Raghunath Lad , Joshua A. Lantz , Boopathi Singalandapuram Mahadevan , Ian W. McGiffen , Douglas A. Roxbury
CPC分类号： F01N3/025 , F01N3/24 , F01N9/002 , F01N13/009 , F02D41/04 , F02D41/16 , F01N2900/1606 , F02D2200/0812
摘要： Systems and methods for removing accumulated soot in an aftertreatment system are disclosed herein. A method includes: determining, by a controller, an adsorption amount of soot in an exhaust aftertreatment system; comparing, by the controller, the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating, by the controller, an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving, by the controller, exhaust gas data during the exhaust cleaning event; determining, by the controller, a desorption amount of soot based on the exhaust gas data; comparing, by the controller, the desorption amount of soot to a predefined desorption limit; and ceasing, by the controller, the exhaust cleaning event based on the comparison.
-
10.发明申请公开(公告)号：US20220412238A1
公开(公告)日：2022-12-29
申请号：US17902241
申请日：2022-09-02
申请人： Cummins Inc.
发明人： Todd C. Bouws , Ankit Raghunath Lad , Joshua A. Lantz , Boopathi Singalandapuram Mahadevan , Ian W. McGiffen , Douglas A. Roxbury
摘要： Systems and methods for removing accumulated soot in an aftertreatment system are disclosed herein. A method includes: determining, by a controller, an adsorption amount of soot in an exhaust aftertreatment system; comparing, by the controller, the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating, by the controller, an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving, by the controller, exhaust gas data during the exhaust cleaning event; determining, by the controller, a desorption amount of soot based on the exhaust gas data; comparing, by the controller, the desorption amount of soot to a predefined desorption limit; and ceasing, by the controller, the exhaust cleaning event based on the comparison.
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.015 秒)
