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公开(公告)号：US10196995B2
公开(公告)日：2019-02-05
申请号：US15679419
申请日：2017-08-17
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Kian Eisazadeh-Far , Steven E. Carlson , Ying Ren , Joel D. Van Ess
Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating the torque profile of an engine and/or for controlling torque applied to a powertrain by one or more devices other than the engine itself to manage the net torque applied by the engine and other device(s) in manners that reduce undesirable NVH. The described approaches are particularly well suitable for use in hybrid vehicles in which the engine is operated in a skip fire or other dynamic firing level modulation manner—however they may be used in a variety of other circumstances as well. In some embodiments, the hybrid vehicle includes a motor/generator that applies the smoothing torque.
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公开(公告)号：US09945313B2
公开(公告)日：2018-04-17
申请号：US13794157
申请日：2013-03-11
Applicant: Tula Technology, Inc.
Inventor： Allan J. Kotwicki , Joel D. Van Ess
CPC classification number: F02D41/18 , F02D35/028 , F02D2200/0402 , F02D2200/0408
Abstract: In one aspect, an engine controller for an engine including multiple working chambers is described. The engine controller includes a mass air charge determining unit that estimates a mass air charge or amount of air to be delivered to a working chamber. Firing decisions made for a firing window of one or more firing opportunities are used to help determine the mass air charge. The engine controller also includes a firing controller, which is arranged to direct firings to deliver a desired output. Fuel is delivered to a working chamber based on the estimated mass air charge.
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公开(公告)号：US10060368B2
公开(公告)日：2018-08-28
申请号：US15679462
申请日：2017-08-17
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Kian Eisazadeh-Far , Steven E. Carlson , Louis J. Serrano , Ying Ren , Joel D. Van Ess
CPC classification number: F02D41/0087 , F02D41/0002 , F02D41/1498 , F02D41/3058 , F02D41/307 , F02D2041/0012 , Y02T10/42
Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating the torque profile of an engine and/or for controlling torque applied to a powertrain by one or more devices other than the engine itself to manage the net torque applied by the engine and other device(s) in manners that reduce undesirable NVH. The described approaches are particularly well suitable for use in hybrid vehicles in which the engine is operated in a skip fire or other dynamic firing level modulation manner—however they may be used in a variety of other circumstances as well. In some embodiments, the hybrid vehicle includes a motor/generator that applies the smoothing torque.
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Patent Agency Ranking
公开(公告)号：US09891137B2
公开(公告)日：2018-02-13
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：US10253706B2
公开(公告)日：2019-04-09
申请号：US15628309
申请日：2017-06-20
Applicant: Tula Technology, Inc.
Inventor： Allan J. Kotwicki , Joel D. Van Ess , Mark A. Wilcutts
Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating working chamber air charge during engine operations. The described approaches and devices are well suited for use in dynamic firing level modulation controlled engines. Manifold pressure is estimated for a time corresponding to an induction event associated with a selected working cycle. The manifold pressure estimate accounts for impacts from one or more intervening potential induction events that will occur between the time that the manifold pressure is estimated and the time that the induction event associated with the selected working cycle occurs. The estimated manifold pressure is used in the estimation of the air charge for the selected working cycle. The described approach may be used to individually calculate the air charge for each induction event at any time that the engine is operating in a mode that can benefit from the individual cylinder air charge estimations.
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6.发明授权公开(公告)号：US09581097B2
公开(公告)日：2017-02-28
申请号：US14582008
申请日：2014-12-23
Applicant: Tula Technology Inc.
Inventor： Matthew A. Younkins , John W. Parsels , Joel D. Van Ess , Siamak Hashemi
CPC classification number: F02D41/0087 , F02D2041/0012 , F02P17/12 , F02P2017/123
Abstract: A variety of methods and arrangements for determining whether a high pressure exhaust spring is present in a cylinder of an internal combustion engine are described. For spark ignition engines, the electrical properties of the spark plug spark gap may be used to determine whether a high pressure exhaust spring is present.
Abstract translation: 描述了用于确定高压排气弹簧是否存在于内燃机的气缸中的各种方法和装置。 对于火花点火发动机，可以使用火花塞火花隙的电气特性来确定是否存在高压排气弹簧。
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公开(公告)号：US09835522B2
公开(公告)日：2017-12-05
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.
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公开(公告)号：US09399963B2
公开(公告)日：2016-07-26
申请号：US14207109
申请日：2014-03-12
Applicant: Tula Technology Inc.
Inventor： Charles H. Loucks , Joel D. Van Ess , Siamak Hashemi , Louis J. Serrano , Mohammad R. Pirjaberi , Shikui Kevin Chen , Matthew A. Younkins , Mark A. Shost , Mark A. Wilcutts
CPC classification number: F02D41/0087 , F02D19/0623 , F02D41/22 , F02D41/3058 , F02D2200/025 , F02D2200/1004 , F02D2200/101 , F02D2200/1012 , F02D2200/1015 , F02D2250/14 , G01M15/11
Abstract: A variety of methods and arrangements for detecting misfire in a skip fire engine control system are described. In one aspect, a window is assigned to a target firing opportunity for a target working chamber. A change in an engine parameter is measured during the window. A determination is made as to whether a firing opportunity before the target firing opportunity is a skip or a fire and/or whether a firing opportunity after the target firing opportunity is a skip or a fire. Based at least in part on this skip/fire determination, a determination is made as to whether the target working chamber has misfired. In various embodiments, if the target working chamber is identified as persistently misfiring, the firing sequence is modified so that the target working chamber is deactivated and excluded from the firing sequence. In still other embodiments, a torque model is used to detect engine-related problems.
Abstract translation: 描述了用于检测跳火消防车控制系统中的失火的各种方法和装置。 在一个方面，将窗口分配给目标工作室的目标发射机会。 在窗口期间测量发动机参数的变化。 确定目标射击机会之前的射击机会是否是跳跃或火灾，和/或目标射击机会之后的射击机会是否是跳跃或火灾。 至少部分地基于该跳过/确定，确定目标工作室是否失火。 在各种实施例中，如果目标工作室被识别为持续地失火，则对燃烧序列进行修改，使得目标工作室被停用并从烧制序列中排除。 在其他实施例中，使用扭矩模型来检测发动机相关问题。
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