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21.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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22.发明申请公开(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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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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25.发明申请公开(公告)号：US20190323441A1
公开(公告)日：2019-10-24
申请号：US16460491
申请日：2019-07-02
Applicant: Tula Technology, Inc.
Inventor： Xin YUAN , Louis J. SERRANO
Abstract: Methods and arrangements for transitioning an engine between a deceleration cylinder cutoff (DCCO) state and an operational state are described. In one aspect, transitions from DCCO may begin with reactivating cylinders to pump air to reduce the pressure in the intake manifold prior to firing any cylinders. The number of pumping cycles, if any, is based on intake manifold absolute pressure (MAP).
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Patent Agency Ranking
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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公开(公告)号：US20180246511A1
公开(公告)日：2018-08-30
申请号：US15963889
申请日：2018-04-26
Applicant: Tula Technology, Inc.
Inventor： Ram SUBRAMANIAN , Louis J. SERRANO , Matthew A. YOUNKINS
CPC classification number: G05D1/0061 , B60W30/1882 , F02D11/105 , F02D17/02 , F02D29/02 , F02D41/0087 , F02D41/1402 , F02D2200/501 , F02D2250/18 , F02P5/1512 , G05D1/0005
Abstract: The present invention relates generally to techniques for improving fuel efficiency of a vehicle powered by an internal combustion engine capable of operating at various displacement levels. An autonomous driving unit or cruise controller selects when possible an engine torque output that corresponds to a fuel efficient displacement level. The resultant vehicle speed profile and NVH level is acceptable to vehicle occupants.
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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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公开(公告)号：US20180112609A1
公开(公告)日：2018-04-26
申请号：US15299259
申请日：2016-10-20
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO
CPC classification number: F02D41/0087 , F02D17/00 , F02D17/02 , F02D41/0085 , F02D41/3058 , F02D2200/1002 , F02D2250/18 , F02D2250/21
Abstract: Methods and controllers for dynamically altering the phase of a firing sequence during operation of an engine are described. The described methods and controllers are particularly useful in conjunction with dynamic skip fire operation of the engine.
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公开(公告)号：US20170370309A1
公开(公告)日：2017-12-28
申请号：US15298542
申请日：2016-10-20
Applicant: Tula Technology, Inc. , GM Global Technology Operations LLC
Inventor： Louis J. SERRANO , Steven E. CARLSON , Steven J. HAASE , Donavan L. DIBBLE , Allen B. RAYL
CPC classification number: F02D41/0087 , B60W10/023 , B60W10/06 , B60W30/188 , B60W2710/025 , F02D17/02 , F02D37/02 , F02D41/0215 , F02D2041/001 , F02D2250/21 , F02P5/145 , F02P5/1504
Abstract: A variety of methods and arrangements are described for controlling transitions between firing fractions during skip fire and potentially variable displacement operation of an engine. In general, cam first transition strategies are described in which the cam phase is changed to, or close to a target cam phase before a corresponding firing fraction change is implemented. When the cam phase change associated with a desired firing fraction change is relatively large, the firing fraction change is divided into a series of two or more firing fraction change steps—with each step using a cam first transition approach. A number of intermediate target selection schemes are described as well.
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