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1.发明申请OXYGEN FRACTION ESTIMATION FOR DIESEL ENGINES UTILIZING VARIABLE INTAKE VALVE ACTUATION 审中-公开柴油发动机使用可变阀门执行的氧分析估计公开(公告)号：US20140060506A1
公开(公告)日：2014-03-06
申请号：US14016843
申请日：2013-09-03
发明人： Gregory M. Shaver
IPC分类号： F02D41/00
CPC分类号： F02D41/00 , F02D13/0226 , F02D23/00 , F02D41/0007 , F02D41/0072 , F02D41/1456 , F02D41/1458 , F02D2041/001 , F02D2041/1416 , F02D2200/0402 , F02M26/05 , F02M26/10 , F02M26/23 , Y02T10/144 , Y02T10/18 , Y02T10/47
摘要： A physically-based, generalizable method to estimate the in-cylinder oxygen fraction from production viable measurements or estimates of exhaust oxygen fraction, fresh air flow, charge flow, fuel flow, turbine flow and EGR flow. The oxygen fraction estimates can be sensitive to errors in the EGR and turbine flow, and in other embodiments, a high-gain observer is implemented to improve the estimate of EGR flow. The observer is applicable to engines utilizing high pressure cooled exhaust gas recirculation, variable geometry turbocharging and flexible intake valve actuation as well as other engines.
摘要翻译： 一种基于物理的，可概括的方法，用于从生产可行测量或排气氧分数，新鲜空气流量，电荷流量，燃料流量，涡轮流量和EGR流量的估计中估算汽缸内氧气分数。 氧气分数估计可以对EGR和涡轮机流量中的误差敏感，并且在其它实施例中，实施高增益观测器以改善EGR流量的估计。 观察者适用于使用高压冷却废气再循环，可变几何涡轮增压和柔性进气门致动以及其他发动机的发动机。
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公开(公告)号：US12000351B2
公开(公告)日：2024-06-04
申请号：US17636993
申请日：2020-08-24
CPC分类号： F02D41/1406 , F01L13/0005 , F02D35/02 , F02D41/0087 , F02D41/1498 , F02D41/28 , F01L2013/001 , F02D2041/1433 , F02D2041/288 , F02D2250/28
摘要： A system and method for dynamically deactivating engine cylinders of an engine equipped with a cylinder deactivation system, where the system and method control torsional vibration in the engine while deactivating cylinders using a computer programed with a desired firing density and a controlled range of engine vibration frequencies. The computer dynamically determines a cylinder firing pattern that provides the desired firing density while optimizing a cost function norm in the controlled range of engine vibration frequencies. The cylinder deactivation system in the engine is then controlled using the determined cylinder firing pattern.
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3.发明授权公开(公告)号：US11454181B2
公开(公告)日：2022-09-27
申请号：US17000416
申请日：2020-08-24
摘要： A system and method for improving the functioning of a turbocharged diesel engine equipped with a cylinder deactivation system includes detecting when the turbocharged diesel engine is at risk of compressor surge, and then delaying the implementation of the cylinder deactivation. The delay may be a set period of time, or it may be determined by performing a set of instructions effective for estimating changes in intake manifold pressures over time if cylinders are deactivated, and then comparing the intake manifold pressure estimates to acceptable intake manifold pressure information. A formula for performing the required estimates is provided.
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公开(公告)号：US20210301742A1
公开(公告)日：2021-09-30
申请号：US17217369
申请日：2021-03-30
发明人： Gregory M. Shaver , Kalen Vos , Mrunal Joshi
摘要： Increasing engine idle speed, combined with modulating the timing of the exhaust valve during idling, increases heat transfer from the engine to aftertreatment systems to reduce the time required for the aftertreatment system to reach a minimum temperature for efficient operation. The resultant increases in heat transfer include an increase of at least 30% in the flow rate of exhaust gases and an increase of exhaust temperature by at least 25° C.
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公开(公告)号：US10094306B2
公开(公告)日：2018-10-09
申请号：US14651521
申请日：2013-12-12
IPC分类号： F02D35/02 , F02D41/00 , F02D41/14 , F02D41/30 , F02D41/40 , F02B1/12 , F02D13/02 , F02M26/05 , F02M26/10 , F02M26/23
摘要： Advanced combustion modes, such as PCCI, operate near the system stability limits. In PCCI, the combustion event begins without a direct combustion trigger in contrast to traditional spark-ignited gasoline engines and direct-injected diesel engines. The lack of a direct combustion trigger encourages the usage of model-based controls to provide robust control of the combustion phasing. The nonlinear relationships between the control inputs and the combustion system response often limit the effectiveness of traditional, non-model-based controllers. Accurate knowledge of the system states and inputs is helpful for implementation of an effective nonlinear controller. A nonlinear controller is developed and implemented to control the engine combustion timing during diesel PCCI operation by targeting desired values of the in-cylinder oxygen concentration, pressure, and temperature during early fuel injection.
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公开(公告)号：US20240309826A1
公开(公告)日：2024-09-19
申请号：US18679577
申请日：2024-05-31
CPC分类号： F02D41/1406 , F01L13/0005 , F02D35/02 , F02D41/0087 , F02D41/1498 , F02D41/28 , F01L2013/001 , F02D2041/1433 , F02D2041/288 , F02D2250/28
摘要： A system and method for dynamically deactivating engine cylinders of an engine equipped with a cylinder deactivation system, where the system and method control torsional vibration in the engine while deactivating cylinders using a computer programed with a desired firing density and a controlled range of engine vibration frequencies. The computer dynamically determines a cylinder firing pattern that provides the desired firing density while optimizing a cost function norm in the controlled range of engine vibration frequencies. The cylinder deactivation system in the engine is then controlled using the determined cylinder firing pattern.
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公开(公告)号：US20220412280A1
公开(公告)日：2022-12-29
申请号：US17636993
申请日：2020-08-24
摘要： A system and method for dynamically deactivating engine cylinders of an engine equipped with a cylinder deactivation system, where the system and method control torsional vibration in the engine while deactivating cylinders using a computer programed with a desired firing density and a controlled range of engine vibration frequencies. The computer dynamically determines a cylinder firing pattern that provides the desired firing density while optimizing a cost function norm in the controlled range of engine vibration frequencies. The cylinder deactivation system in the engine is then controlled using the determined cylinder firing pattern.
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公开(公告)号：US11359564B2
公开(公告)日：2022-06-14
申请号：US17217369
申请日：2021-03-30
发明人： Gregory M. Shaver , Kalen Vos , Mrunal Joshi
摘要： Increasing engine idle speed, combined with modulating the timing of the exhaust valve during idling, increases heat transfer from the engine to aftertreatment systems to reduce the time required for the aftertreatment system to reach a minimum temperature for efficient operation. The resultant increases in heat transfer include an increase of at least 30% in the flow rate of exhaust gases and an increase of exhaust temperature by at least 25° C.
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9.发明申请公开(公告)号：US20210017922A1
公开(公告)日：2021-01-21
申请号：US17000416
申请日：2020-08-24
摘要： A system and method for improving the functioning of a turbocharged diesel engine equipped with a cylinder deactivation system includes detecting when the turbocharged diesel engine is at risk of compressor surge, and then delaying the implementation of the cylinder deactivation. The delay may be a set period of time, or it may be determined by performing a set of instructions effective for estimating changes in intake manifold pressures over time if cylinders are deactivated, and then comparing the intake manifold pressure estimates to acceptable intake manifold pressure information. A formula for performing the required estimates is provided.
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10.发明申请NONLINEAR MODEL-BASED CONTROLLER FOR PREMIXED CHARGE COMPRESSION IGNITION COMBUSTION TIMING IN DIESEL ENGINES 审中-公开基于模型的非线性控制器，用于柴油发动机中预充电充电点火燃烧时间公开(公告)号：US20150330326A1
公开(公告)日：2015-11-19
申请号：US14651521
申请日：2013-12-12
CPC分类号： F02D35/02 , F02B1/12 , F02D13/0226 , F02D13/0265 , F02D41/0007 , F02D41/0062 , F02D41/0072 , F02D41/1401 , F02D41/1447 , F02D41/1458 , F02D41/3035 , F02D41/401 , F02D2041/1415 , F02D2041/1416 , F02D2041/1433 , F02D2200/0402 , F02D2200/0406 , F02D2200/0411 , F02D2200/0414 , F02M26/05 , F02M26/10 , F02M26/23 , Y02T10/128 , Y02T10/144 , Y02T10/18 , Y02T10/44 , Y02T10/47
摘要： Advanced combustion modes, such as PCCI, operate near the system stability limits. In PCCI, the combustion event begins without a direct combustion trigger in contrast to traditional spark-ignited gasoline engines and direct-injected diesel engines. The lack of a direct combustion trigger encourages the usage of model-based controls to provide robust control of the combustion phasing. The nonlinear relationships between the control inputs and the combustion system response often limit the effectiveness of traditional, non-model-based controllers. Accurate knowledge of the system states and inputs is helpful for implementation of an effective nonlinear controller. A nonlinear controller is developed and implemented to control the engine combustion timing during diesel PCCI operation by targeting desired values of the in-cylinder oxygen concentration, pressure, and temperature during early fuel injection.
摘要翻译： 先进的燃烧模式，如PCCI，在系统稳定性极限附近运行。 在PCCI中，与传统的火花点火汽油发动机和直喷柴油发动机不同，燃烧事件开始时没有直接燃烧触发。 直接燃烧触发的缺乏鼓励使用基于模型的控制来提供对燃烧定相的可靠控制。 控制输入与燃烧系统响应之间的非线性关系往往限制了传统的非模型控制器的有效性。 对系统状态和输入的准确了解有助于实现有效的非线性控制器。 开发并实现非线性控制器，以在柴油PCCI运行期间通过瞄准在早期燃料喷射期间的缸内氧浓度，压力和温度的期望值来控制发动机燃烧正时。
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