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11.发明授权公开(公告)号：US09845754B2
公开(公告)日：2017-12-19
申请号：US14578912
申请日：2014-12-22
Applicant: Cummins Inc.
Inventor： Carlos Alcides Lana , David J. Stroh , Samuel C. Geckler , Marten H. Dane , Anthony Kyle Perfetto , Karthik Kappaganthu , Govindarajan Kothandaraman
IPC: F02M25/07 , F02D41/14 , F02P5/04 , F02D41/00 , F02P5/15 , F02D37/02 , F02M26/43 , F02M26/05 , F02D35/02 , F02M26/46
CPC classification number: F02D41/1439 , F02D35/02 , F02D35/021 , F02D35/023 , F02D35/027 , F02D37/02 , F02D41/0052 , F02D41/0055 , F02D41/0065 , F02D41/008 , F02D41/1448 , F02D41/1451 , F02D41/1452 , F02D41/1454 , F02D2041/1431 , F02D2041/147 , F02D2200/1015 , F02D2250/18 , F02M26/05 , F02M26/43 , F02M26/46 , F02P5/045 , F02P5/1516 , Y02T10/46 , Y02T10/47
Abstract: A system includes an internal combustion engine having a number of cylinders, with at least one of the cylinder(s) being a primary EGR cylinder that is dedicated to provided EGR flow during at least some operating conditions. A controller is structured to control combustion conditions in the cylinders in response to one or more operating conditions associated with the engine.
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公开(公告)号：US09587617B2
公开(公告)日：2017-03-07
申请号：US14565882
申请日：2014-12-10
Applicant: Cummins Inc
CPC classification number: F02P5/1516 , F02P9/002 , Y02T10/46
Abstract: Systems and methods are disclosed for adjusting the spark timing of an internal combustion engine. According to at least one aspect of the present disclosure, the system includes an exhaust gas recirculation (EGR) system for recirculating exhaust gas flow from at least one primary EGR cylinder of an engine into an intake system prior to combustion. According to at least one other aspect of the present disclosure, the method includes estimating a dynamic EGR fraction of exhaust gas directed into the intake system via the EGR system, estimating a steady-state EGR fraction of exhaust gas directed into the intake system at the changed mass air flow rate, computing a difference between the dynamic fraction and steady-state fraction to determine a change in EGR fraction, and applying a gain factor to the change in EGR fraction to determine a desired spark timing adjustment.
Abstract translation: 公开了用于调节内燃机的火花正时的系统和方法。 根据本公开的至少一个方面，该系统包括废气再循环（EGR）系统，用于在燃烧之前使排气流从发动机的至少一个主EGR气缸再循环到进气系统中。 根据本公开的至少另一方面，所述方法包括：经由所述EGR系统估计引导到所述进气系统中的排气的动态EGR分数，估计在所述进气系统中引导的废气的稳态EGR分数 改变质量空气流量，计算动态分数和稳态分数之间的差以确定EGR分数的变化，以及将增益因子应用于EGR分数的变化以确定期望的火花正时调整。
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公开(公告)号：US09429134B2
公开(公告)日：2016-08-30
申请号：US14558261
申请日：2014-12-02
Applicant: Cummins, Inc.
Inventor： Akash S. Desai , Karthik Kappaganthu , Benjamin L. Olivas , Douglas L. Sprunger , David Stroh
CPC classification number: F02P11/02 , F02P3/045 , F02P5/1516 , F02P9/002 , F02P9/007 , F02P17/12 , F02P2017/123 , Y02T10/46
Abstract: A method of responding to a detected blowout in a coil ignition system is provided in this disclosure. The method includes receiving a characteristic regarding operation of a coil ignition system; determining a blowout condition exists for the coil ignition system based on the characteristic; and providing a command to the coil ignition system based on the determination that the blowout condition exists, wherein the command is structured to reduce a residual charge amount in the coil ignition system.
Abstract translation: 在本公开中提供了在线圈点火系统中响应检测到的井喷的方法。 该方法包括接收关于线圈点火系统的操作的特性; 基于特性确定线圈点火系统的井喷状况; 并且基于存在所述井喷条件的判定，向所述线圈点火系统提供指令，其中所述指令被构造为减少所述线圈点火系统中的剩余充电量。
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公开(公告)号：US20160169186A1
公开(公告)日：2016-06-16
申请号：US14565882
申请日：2014-12-10
Applicant: Cummins Inc,
CPC classification number: F02P5/1516 , F02P9/002 , Y02T10/46
Abstract: Systems and methods are disclosed for adjusting the spark timing of an internal combustion engine. According to at least one aspect of the present disclosure, the system includes an exhaust gas recirculation (EGR) system for recirculating exhaust gas flow from at least one primary EGR cylinder of an engine into an intake system prior to combustion. According to at least one other aspect of the present disclosure, the method includes estimating a dynamic EGR fraction of exhaust gas directed into the intake system via the EGR system, estimating a steady-state EGR fraction of exhaust gas directed into the intake system at the changed mass air flow rate, computing a difference between the dynamic fraction and steady-state fraction to determine a change in EGR fraction, and applying a gain factor to the change in EGR fraction to determine a desired spark timing adjustment.
Abstract translation: 公开了用于调节内燃机的火花正时的系统和方法。 根据本公开的至少一个方面，该系统包括废气再循环（EGR）系统，用于在燃烧之前使排气流从发动机的至少一个主EGR气缸再循环到进气系统中。 根据本公开的至少另一方面，所述方法包括：经由所述EGR系统估计引导到所述进气系统中的排气的动态EGR分数，估计在所述进气系统中引导的废气的稳态EGR分数 改变质量空气流量，计算动态分数和稳态分数之间的差以确定EGR分数的变化，以及将增益因子应用于EGR分数的变化以确定期望的火花正时调整。
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