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1.发明公开公开(公告)号：US20230392561A1
公开(公告)日：2023-12-07
申请号：US17830925
申请日：2022-06-02
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Xin YUAN , Shikui Kevin CHEN , Xi LUO , Robert C. WANG , Xiaoping CAI , Vijay SRINIVASAN
CPC classification number: F02D41/0087 , F02D41/2403 , F02D41/0085 , F02D2200/1002 , F02D2200/50 , F02D2200/0802
Abstract: A system and method for operating an ICE by (a) generating a running history of one or more-cylinder events per cylinder, and (b) using the running history to select a least-used non-rotating firing pattern, among a plurality of non-rotating firing patterns, provided for each firing fraction less than one (1). By making the least used selection based on the running history, unequal usage among cylinders of the ICE can be mitigated.
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2.发明申请公开(公告)号：US20230115272A1
公开(公告)日：2023-04-13
申请号：US17860838
申请日：2022-07-08
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Elliott A. ORTIZ-SOTO , Shikui Kevin CHEN , Li-Chun CHIEN , Aditya MANDAL
Abstract: A classifier capable of predicting if cylinder valves of an engine commanded to activate or deactivate failed to activate or deactivate respectively. In various embodiments, the classifier can be binary or multi-class Logistic Regression, or a Multi-Layer Perceptron (MLP) classifier. The variable displacement engine can operate in cooperation with a variable displacement engine using cylinder deactivation (CDA) or skip fire, including dynamic skip fire and/or multi-level skip fire.
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公开(公告)号：US20220228538A1
公开(公告)日：2022-07-21
申请号：US17714880
申请日：2022-04-06
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Louis J. SERRANO , Xiaoping CAI , Shikui Kevin CHEN , Benjamin M. WOLK , Avra BRAHMA , Justin R. LEE
Abstract: A system and method for transitioning a firing fraction of a variable displacement internal combustion engine when generating a desired torque output. During and following the transition to the second firing fraction, a combustion recipe is ascertained and used operating the cylinders of the variable displacement internal combustion engine to generate the desired torque output. The recipe is preferably optimized for the engine operating at the second firing fraction, at least relative to the previous charge of the previous combustion recipe used with the first firing fraction.
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公开(公告)号：US20220018296A1
公开(公告)日：2022-01-20
申请号：US17314309
申请日：2021-05-07
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Shikui Kevin CHEN , Louis J. SERRANO , Vijay SRINIVASAN , Elliott A. ORTIZ-SOTO , Matthew A. YOUNKINS
Abstract: A system and method for controlling an internal combustion engine involving (1) cylinder trapping strategies where one of several pneumatic spring types are dynamically selected for cylinders based at least partially on a predicted number of upcoming skips for each of the cylinders respectively and/or (2) staggering various valvetrain dependent operational engine strategies as operating conditions permit as the internal combustion engine warms up following a cold start.
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5.发明申请公开(公告)号：US20150075458A1
公开(公告)日：2015-03-19
申请号：US14487563
申请日：2014-09-16
Applicant: Tula Technology Inc.
Inventor： John W. PARSELS , Matthew A. YOUNKINS , Shikui Kevin CHEN
CPC classification number: F02D17/02 , F02D13/06 , F02D41/0087 , F02D41/1498 , F02D41/22 , F02D2041/001 , Y02T10/18 , Y02T10/40
Abstract: A variety of methods and devices for controlling the operation of the intake and exhaust valves in an internal combustion engine during skip fire operation are described. In various embodiments, an exhaust valve monitor or other suitable mechanism is used to detect exhaust valve actuation faults. When an exhaust valve actuation fault is detected for a particular cylinder, the corresponding intake valve is deactivated (or not activated) in circumstances when it would otherwise be activated in order to prevent the intake valve from opening into a cylinder that contains high pressure combustion gases. The described approach is particularly beneficial when skip fire operation is combined with cylinder deactivation so that air is not pumped through the cylinders during the skipped working cycles.
Abstract translation: 描述了用于在跳火操作期间控制内燃机中的进气门和排气门的操作的各种方法和装置。 在各种实施例中，使用排气门监视器或其他合适的机构来检测排气门致动故障。 当检测到特定气缸的排气门致动故障时，相应的进气门在其它情况下被停用（或未激活），以防止进气阀打开进入含有高压燃烧气体的气缸 。 所述方法在跳火操作与气缸停用组合时特别有利，使得在跳过的工作循环期间空气不被泵送通过气缸。
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Patent Agency Ranking
公开(公告)号：US20220372925A1
公开(公告)日：2022-11-24
申请号：US17883338
申请日：2022-08-08
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Xin YUAN , Shikui Kevin CHEN , Jennifer K. LIGHT-HOLETS , Scott R. BARDAKJY
Abstract: A system and method of integrating an engine having dynamic skip fire control with an exhaust gas recirculation system in a turbocharged internal combustion engine is described. An engine control system determines an appropriate firing pattern based at least in part on a desired exhaust gas recirculation flow rate. Signals from sensors in the intake manifold and exhaust system may also be used as part of a feedback loop to determine a desired exhaust gas recirculation flow rate.
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公开(公告)号：US20220252017A1
公开(公告)日：2022-08-11
申请号：US17725125
申请日：2022-04-20
Applicant: Tula Technology, Inc.
Inventor： Shikui Kevin CHEN , Louis J. SERRANO , Vijay SRINIVASAN , Elliott A. ORTIZ-SOTO , Matthew A. YOUNKINS
Abstract: A system and method for controlling an internal combustion engine involving (1) cylinder trapping strategies where one of several pneumatic spring types are dynamically selected for cylinders based at least partially on a predicted number of upcoming skips for each of the cylinders respectively and/or (2) staggering various valvetrain dependent operational engine strategies as operating conditions permit as the internal combustion engine warms up following a cold start.
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公开(公告)号：US20210003088A1
公开(公告)日：2021-01-07
申请号：US17026706
申请日：2020-09-21
Applicant: Tula Technology, Inc.
Inventor： Shikui Kevin CHEN , Aditya MANDAL , Li-Chun CHIEN , Elliott ORTIZ-SOTO
Abstract: Using machine learning for cylinder misfire detection in a dynamic firing level modulation controlled internal combustion engine is described. In a classification embodiment, cylinder misfires are differentiated from intentional skips based on a measured exhaust manifold pressure. In a regressive model embodiment, the measured exhaust manifold pressure is compared to a predicted exhaust manifold pressure generated by neural network in response to one or more inputs indicative of the operation of the vehicle. Based on the comparison, a prediction is made if a misfire has occurred or not. In yet other alternative embodiment, angular crank acceleration is used as well for misfire detection.
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公开(公告)号：US20170299466A1
公开(公告)日：2017-10-19
申请号：US15641097
申请日：2017-07-03
Applicant: Tula Technology, Inc.
Inventor： Shikui Kevin CHEN , Allan J. KOTWICKI , Joel D. VAN ESS , Robert S. BAILEY , Mohammad R. PIRJABERI
CPC classification number: G01M15/05 , F02M35/1038 , G01M15/09
Abstract: A variety of methods and arrangements for detecting failure of the commanded air induction in an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored. An air induction event generates a fluctuation in the intake manifold pressure, which is recorded. The signal is processed through a diagnostic filter to help determine whether the actual induction matched the commanded induction. In other embodiments, measured crankshaft acceleration is compared with estimated crankshaft acceleration. If the two quantities differ by a threshold amount an induction fault is detected. The two detection methods may also be combined. The describe approaches are particularly well suited for use in engines operating in a skip fire mode with cylinder deactivation and/or a dynamic firing level modulation mode.
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公开(公告)号：US20160116371A1
公开(公告)日：2016-04-28
申请号：US14919385
申请日：2015-10-21
Applicant: Tula Technology Inc.
Inventor： Shikui Kevin CHEN , Allan J. KOTWICKI , Joel D. VAN ESS , Robert S. BAILEY , Mohammad R. PIRJABERI
CPC classification number: G01M15/05 , F02M35/1038 , G01M15/09
Abstract: A variety of methods and arrangements for detecting failure of the commanded air induction in an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored. An air induction event generates a fluctuation in the intake manifold pressure, which is recorded. The signal is processed through a diagnostic filter to help determine whether the actual induction matched the commanded induction. In other embodiments, measured crankshaft acceleration is compared with estimated crankshaft acceleration. If the two quantities differ by a threshold amount an induction fault is detected. The two detection methods may also be combined. The describe approaches are particularly well suited for use in engines operating in a skip fire mode with cylinder deactivation and/or a dynamic firing level modulation mode.
Abstract translation: 描述了用于检测内燃机中指令的空气感应故障的各种方法和装置。 在一些实施例中，监测进气歧管压力。 空气感应事件产生记录的进气歧管压力的波动。 信号通过诊断滤波器进行处理，以帮助确定实际感应是否与命令感应相匹配。 在其他实施例中，将测量的曲轴加速度与估计的曲轴加速度进行比较。 如果两个量值相差阈值，则检测到感应故障。 两种检测方法也可以组合。 所描述的方法特别适合于在具有气缸停用和/或动态点火级调制模式的跳火模式下运行的发动机中使用。
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