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公开(公告)号：US20210396189A1
公开(公告)日：2021-12-23
申请号：US17463814
申请日：2021-09-01
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Xin YUAN , John W. PARSELS , Mohammad R. PIRJABERI , Mark A. WILCUTTS , Masaki NAGASHIMA
Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner. A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.
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公开(公告)号：US20200158044A1
公开(公告)日：2020-05-21
申请号：US16749607
申请日：2020-01-22
Applicant: Tula Technology, Inc.
Inventor： Masaki NAGASHIMA , Mohammad R. PIRJABERI , Louis J. SERRANO , Xin YUAN , John W. PARSELS , Mark A. WILCUTTS
Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a dynamic firing level modulation manner. A smoothing torque is determined by adaptive control that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.
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3.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：US20210199061A1
公开(公告)日：2021-07-01
申请号：US17183856
申请日：2021-02-24
Applicant: Tula Technology, Inc.
Inventor： Jerry F. FUSCHETTO , Matthew A. YOUNKINS , Ihab S. SOLIMAN , Mark A. WILCUTTS , Steven E. CARLSON , Louis J. SERRANO
Abstract: Various methods and arrangements for improving fuel economy and noise, vibration, and harshness (NVH) in a skip fire controlled engine are described. An engine controller dynamically selects a gas spring type for a skipped firing opportunity. Determination of the skip/fire pattern and gas spring type may be made on a firing opportunity by firing opportunity basis.
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公开(公告)号：US20190055894A1
公开(公告)日：2019-02-21
申请号：US16165757
申请日：2018-10-19
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Vijay SRINIVASAN , Geoffrey ROUTLEDGE , Mark A. SHOST , Biswa R. GHOSH , Mark A. WILCUTTS , Matthew A. YOUNKINS , Ying REN
IPC: F02D41/00 , F02D17/02 , F02P5/15 , F02D13/02 , F02D41/10 , F02D41/12 , F01L1/047 , F02D41/26 , F02D13/06 , F02D41/04 , G10K11/16
Abstract: Systems and methods for reducing noise or vibration generated by an internal combustion engine are described. An engine controller is arranged to operate the working chambers of the engine in a cylinder output level modulation manner A noise/vibration reduction unit actively control of a device that is not a part of the powertrain. The device is controlled in a feed forward manner to alter an NVH characteristic of the vehicle in a desired manner based at least in part on a characteristic of the cylinder output level modulation operation of the engine.
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Patent Agency Ranking
公开(公告)号：US20180202379A1
公开(公告)日：2018-07-19
申请号：US15918258
申请日：2018-03-12
Applicant: Tula Technology, Inc.
Inventor： Masaki NAGASHIMA , Mohammad R. PIRJABERI , Louis J. SERRANO , Xin YUAN , John W. PARSELS , Mark A. WILCUTTS
CPC classification number: F02D41/0087 , F02D11/105 , F02D13/06 , F02D41/0002 , F02D41/1497 , F02D41/1498 , F02D41/3058 , F02D41/307 , F02D2041/0012 , F02D2041/1432 , F02D2250/18 , F02D2250/24
Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a dynamic firing level modulation manner. A smoothing torque is determined by adaptive control that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.
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7.发明申请NOISE, VIBRATION AND HARSHNESS REDUCTION IN A SKIP FIRE ENGINE CONTROL SYSTEM 有权噪声，振动和谐波减少在一个飞行火灾发动机控制系统公开(公告)号：US20160201586A1
公开(公告)日：2016-07-14
申请号：US14992779
申请日：2016-01-11
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Xin YUAN , John W. PARSELS , Mohammad R. PIRJABERI , Mark A. WILCUTTS , Masaki NAGASHIMA
CPC classification number: F02D41/0087 , F02D41/0002 , F02D41/1498 , F02D41/3058 , F02D41/307 , F02D2041/0012
Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner. A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.
Abstract translation: 描述了用于减少跳火消防车控制系统中的噪声，振动和粗糙度（NVH）的各种方法和装置。 在一个方面，使用点火顺序来以跳火方式操作发动机。 确定通过能量存储/释放装置施加到动力系的平滑扭矩。 平滑扭矩被布置成至少部分抵消由跳过火焰点火序列产生的扭矩的变化。 还描述了与上述操作相关的各种方法，动力系统控制器，布置和计算机软件。
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公开(公告)号：US20220120230A1
公开(公告)日：2022-04-21
申请号：US17075072
申请日：2020-10-20
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Mark A. WILCUTTS , Xi LUO , Anastasios ARVANITIS
IPC: F02D41/00 , F01N3/021 , F01M1/02 , B60W10/08 , F01N3/10 , F02D41/02 , F02D41/14 , B60W30/20 , F02D41/06 , B60W10/06 , F01N3/20 , F02B67/06 , F02D13/02 , F02D41/40 , F01M5/00
Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner. A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.
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公开(公告)号：US20200318566A1
公开(公告)日：2020-10-08
申请号：US16839651
申请日：2020-04-03
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Steven E. CARLSON , Louis J. SERRANO , Mark A. WILCUTTS , Vijay SRINIVASAN
Abstract: An internal combustion engine operates so that it delivers zero or negative torque. The engine operates in either a deceleration cylinder cut off (DCCO) mode or skip cylinder compression braking mode. In the skip cylinder compression braking mode, selected working cycles of selected working chambers are operated in a compression release braking mode. Accordingly, individual working chambers are sometimes not fired and sometimes operated in the compression release braking mode while the engine is operating in the skip cylinder compression braking mode.
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公开(公告)号：US20190178135A1
公开(公告)日：2019-06-13
申请号：US16275881
申请日：2019-02-14
Applicant: Tula Technology, Inc.
Inventor： Matthew A. YOUNKINS , Shikui Kevin CHEN , Mark A. WILCUTTS
Abstract: A variety of methods and arrangements for controlling the exhaust gas temperature of a lean burn, skip fire controlled internal combustion engine are described. In one aspect, an engine controller includes an aftertreatment system monitor and a firing timing determination unit. The aftertreatment monitor obtains data relating to a temperature of one or more aftertreatment elements, such as a catalytic converter. Based at least partly on this data, the firing timing determination unit generates a firing sequence for operating the engine in a skip fire manner such that the temperature of the aftertreatment element is controlled within its effective operating range.
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