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公开(公告)号：US20190170074A1
公开(公告)日：2019-06-06
申请号：US16270349
申请日：2019-02-07
Applicant: Tula Technology Inc. , GM Global Technology Operations LLC
Inventor： Mark A. SHOST , Louis J. SERRANO , Steven E. CARLSON , Vijay SRINIVASAN , Eric J. DEFENDERFER , Nitish J. WAGH , Randall S. BEIKMANN , Jinbiao LI , Xin YUAN , Li-Chun CHIEN
Abstract: In one aspect, a skip fire engine controller is described. The skip fire engine controller includes a skip fire module arranged to determine an operational firing fraction and associated cylinder load for delivering a desired engine output. The skip fire engine controller also includes a firing controller arranged to direct firings in a skip fire manner that delivers the selected operational firing fraction. Various methods, modules, lookup tables and arrangements related to the selection of a suitable operational firing fraction are also described.
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公开(公告)号：US20170342921A1
公开(公告)日：2017-11-30
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
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：US20170306864A1
公开(公告)日：2017-10-26
申请号：US15646476
申请日：2017-07-11
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. PIRJABERI , Louis J. SERRANO , Xin YUAN , Steven E. CARLSON , Siamak HASHEMI , Ryan A. KUHLENBECK
CPC classification number: F02D37/02 , F02D17/02 , F02D41/0002 , F02D41/0087 , F02D2041/286 , F02D2200/0406 , F02D2200/101 , F02P5/1504 , Y02T10/42 , Y02T10/46
Abstract: Methods and arrangements are described for controlling transitions between firing fractions during skip fire operation of an engine in order to help smooth the transitions. Generally, firing fractions transitions are implemented gradually, preferably in a manner that relatively closely tracks manifold filling dynamics. In some embodiments, the commanded firing fraction is altered each firing opportunity. Another approach contemplates altering the commanded firing fraction by substantially the same amount each firing opportunity for at least a portion of the transition. These approaches work particularly well when the commanded firing fraction is provided to a skip fire controller that includes an accumulator functionality that tracks the portion of a firing that has been requested, but not delivered, or vice versa. In various embodiments, commanded firing fraction changes are delayed relative to initiation of the change in throttle position to help compensate for inherent delays associated with changing the manifold air pressure.
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14.发明申请公开(公告)号：US20160159364A1
公开(公告)日：2016-06-09
申请号：US15046175
申请日：2016-02-17
Applicant: Tula Technology, Inc.
Inventor： Mark A. WILCUTTS , Xin YUAN , Joshua P. SWITKES , Steven E. CARLSON , John F. IMPEDUGLIA , John W. PARSELS
CPC classification number: B60W30/20 , B60W10/026 , B60W10/08 , B60W2030/203 , B60W2710/025 , F02D11/105 , F02D41/00 , F02D41/0087 , F02D41/022 , F02D41/18 , F02D2250/18
Abstract: A variety of methods and devices for mitigating power train vibration during skip fire operation of an engine are described. In one aspect, the slip of a drive train component (such as a torque converter clutch) is based at least in part upon a skip fire characteristic (such as firing fraction, selected firing sequence/pattern, etc.) during skip fire operation of an engine. The modulation of the drive train component slip can also be varied as a function of one or more engine operating parameters such as engine speed and/or a parameter indicative of the output of fired cylinders (such as mass air charge).
Abstract translation: 描述了用于减轻发动机的跳火操作期间的动力传动系振动的各种方法和装置。 一方面，传动系部件（例如变矩器离合器）的滑动至少部分地基于跳过火焰运行期间的跳火特性（例如点火分数，选择的点火顺序/图案等） 一个引擎 传动系组件滑动的调制也可以作为一个或多个发动机操作参数（诸如发动机转速和/或指示燃烧气缸的输出的参数（例如大气压））的函数而变化。
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公开(公告)号：US20150211472A1
公开(公告)日：2015-07-30
申请号：US14568408
申请日：2014-12-12
Applicant: Tula Technology Inc.
Inventor： Steven E. CARLSON
CPC classification number: F02P5/1522 , F02D17/02 , F02D41/0087 , F02D41/027 , F02P5/1523 , Y02T10/46
Abstract: In one aspect, a method for mitigating detonation in a skip fire engine control system is described. The working chambers of the engine are operated in a skip fire manner to deliver a desired torque. One or more detonations are detected in the engine. In response to the detection of the one or more detonations, the spark timing for one or more of the working chambers is retarded. Additionally, the firing fraction used to operate the engine is increased. The increase in the firing fraction helps to compensate for torque lost due to the retarding of the spark timing.
Abstract translation: 一方面，描述了一种用于减轻跳火消防车控制系统中的爆震的方法。 发动机的工作室以跳火方式操作以提供期望的扭矩。 在发动机中检测到一个或多个爆震。 响应于一个或多个爆震的检测，一个或多个工作室的火花正时被延迟。 此外，用于操作发动机的燃烧部分增加。 燃烧分数的增加有助于补偿由于火花正时延迟引起的扭矩损失。
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Patent Agency Ranking
公开(公告)号：US20140041630A1
公开(公告)日：2014-02-13
申请号：US13963759
申请日：2013-08-09
Applicant: Tula Technology, Inc.
Inventor： Steven E. CARLSON , Xin YUAN , Louis J. SERRANO , Joshua P. SWITKES , Biswa R. GHOSH , Norman C. LO
IPC: F02P9/00
CPC classification number: F02P9/00 , F02D41/0082 , F02D41/0087 , F02D41/1402 , F02D41/3058 , F02D2200/602 , F02P5/1506 , F02P7/02 , Y02T10/46
Abstract: Various methods and arrangements for operating a skip fire engine control system are described. In one aspect of the invention, a distinct firing sequence is determined for each bank of working chambers that is used to operate the bank in a skip fire manner. Each firing sequence uses a different firing fraction. In another aspect of the invention, a determination is made as to whether a firing sequence should be dynamically generated or selected from a set of predefined firing sequences.
Abstract translation: 描述了用于操作跳火消防车控制系统的各种方法和装置。 在本发明的一个方面中，针对用于以跳火方式操作银行的每一组工作室确定了不同的点火顺序。 每个射击序列使用不同的射击分数。 在本发明的另一方面中，确定是否应从一组预定义的触发序列中动态生成或选择点火序列。
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公开(公告)号：US20180320615A1
公开(公告)日：2018-11-08
申请号：US16038622
申请日：2018-07-18
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. PIRJABERI , Kian EISAZADEH-FAR , Steven E. CARLSON , Louis J. SERRANO
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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公开(公告)号：US20170321617A1
公开(公告)日：2017-11-09
申请号：US15490092
申请日：2017-04-18
Applicant: Tula Technology, Inc.
Inventor： Srihari KALLURI , Steven E. CARLSON
CPC classification number: F02D41/0087 , F01N3/101 , F01N9/00 , F01N13/082 , F01N13/10 , F01N2410/00 , F01N2410/10 , F01N2900/08 , F02D15/00 , F02D41/0055 , F02D41/123 , F02D41/3058 , F02M26/13 , F02M26/15 , Y02T10/47
Abstract: Various methods and arrangements for improving fuel economy in decel fuel cut-off (DFCO) operation of an internal combustion engine are described. In one aspect, a catalytic converter bypass valve diverts the pumped air in DFCO mode from flowing through a catalytic converter. The diverted, pumped air may flow through a bypass line or be returned to the engine intake manifold through an exhaust gas recirculation return line. Another aspect of the invention relates to directing the diverted pumped air through an emission control device.
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19.发明申请公开(公告)号：US20150260117A1
公开(公告)日：2015-09-17
申请号：US14638908
申请日：2015-03-04
Applicant: Tula Technology Inc. , GM Global Technology Operations LLC
Inventor： Mark A. SHOST , Louis J. SERRANO , Steven E. CARLSON , Vijay SRINIVASAN , Eric J. DEFENDERFER , Nitish J. WAGH , Randall S. BEIKMANN , Jinbiao LI , Xin YUAN , Li-Chun CHIEN
CPC classification number: F02D41/0087 , F02D17/02 , F02D41/0225 , F02D41/1406 , F02D41/2422 , F02D2200/101
Abstract: In one aspect, a skip fire engine controller is described. The skip fire engine controller includes a skip fire module arranged to determine an operational firing fraction and associated cylinder load for delivering a desired engine output. The skip fire engine controller also includes a firing controller arranged to direct firings in a skip fire manner that delivers the selected operational firing fraction. Various methods, modules, lookup tables and arrangements related to the selection of a suitable operational firing fraction are also described.
Abstract translation: 在一个方面，描述了一个跳过消防车控制器。 跳过消防车控制器包括跳过火模块，其被布置成确定用于输送所需发动机输出的操作点火分数和相关联的气缸负载。 跳过消防车控制器还包括点火控制器，其布置成以能够提供所选择的操作射击分数的跳火方式来引导点火。 还描述了与选择合适的操作射击分数有关的各种方法，模块，查找表和布置。
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20.发明申请公开(公告)号：US20140278007A1
公开(公告)日：2014-09-18
申请号：US13843567
申请日：2013-03-15
Applicant: TULA TECHNOLOGY, INC.
Inventor： Mark A. WILCUTTS , Xin YUAN , Joshua P. SWITKES , Li-Chun CHIEN , Steven E. CARLSON , Christopher W. CHANDLER , Christopher C. Hand , Matthew A. YOUNKINS
IPC: F02D41/00
CPC classification number: F02D41/0087 , F02D41/3058 , F02D2200/0614
Abstract: Various methods and arrangements for determining a combustion control parameter for a working chamber in an engine are described. In one aspect, an engine controller includes a firing counter that stores a firing history for the working chamber. A combustion control module is used to determine a combustion control parameter, which is used to help manage combustion in the working chamber. The combustion control parameter is determined based at least in part on the firing history.
Abstract translation: 描述了用于确定发动机中的工作室的燃烧控制参数的各种方法和装置。 一方面，发动机控制器包括存储工作室的点火历史的点火计数器。 燃烧控制模块用于确定燃烧控制参数，其用于帮助管理工作室中的燃烧。 至少部分地基于击发历史来确定燃烧控制参数。
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