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71.发明授权公开(公告)号：US11486321B2
公开(公告)日：2022-11-01
申请号：US17390223
申请日：2021-07-30
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： Aaron William Beinborn , J. Steven Kolhouse
Abstract: A controller for a vehicle includes at least one processor and at least one memory storing instructions that, when executed by the processor, cause the controller to perform various operations. The operations include determining that the vehicle is in reverse and in response, deactivating a cylinder of an engine of the vehicle.
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72.发明申请公开(公告)号：US20220341819A1
公开(公告)日：2022-10-27
申请号：US17862143
申请日：2022-07-11
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Shikui Kevin CHEN
Abstract: A diagnostic system and method that (a) that uses models indicative of both successful firing and skips to determine if cylinders of a skip fire controlled internal combustion engine have successfully fired or successfully skipped and (b) uses filtered exhaust gas pressure readings for detecting faults associated with EGR systems and/or turbocharger systems.
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公开(公告)号：US11441519B2
公开(公告)日：2022-09-13
申请号：US17110917
申请日：2020-12-03
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：US20220268227A1
公开(公告)日：2022-08-25
申请号：US17742070
申请日：2022-05-11
Applicant: Tula Technology, Inc.
Inventor： Vijay Srinivasan
Abstract: A variety of methods and arrangements are described for managing transitions between operational states of an internal combustion engine during skip fire operation of the engine.
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75.发明授权公开(公告)号：US11326532B1
公开(公告)日：2022-05-10
申请号：US17412668
申请日：2021-08-26
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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Patent Agency Ranking
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：US20220112827A1
公开(公告)日：2022-04-14
申请号：US17561468
申请日：2021-12-23
Applicant: Tula Technology, Inc.
Inventor： Matthew A. YOUNKINS , Shikui Kevin CHEN
Abstract: System and methods are described for optimizing exhaust flow rate and temperature during specified operational periods warm-up and keep-warm conditions, by minimizing or maximizing heat flux during those specified operational periods.
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公开(公告)号：US20220065182A1
公开(公告)日：2022-03-03
申请号：US17373247
申请日：2021-07-12
Applicant: Tula Technology, Inc. , Cummins, Inc.
Inventor： Louis Joe Serrano , Xiaoping Cai , Yongyan Cao , Vijay Srinivasan , Kevin Shikui Chen , Andrea Marie Evans , Avra Brahma
Abstract: A variety of methods and arrangements are described for managing recharging of cylinders of an internal combustion engine during skip fire operation of the engine. In one method, a maximum allowed deactivation time for a cylinder is determined and the cylinder is recharged before the maximum allowed deactivation time is exceeded.
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79.发明申请公开(公告)号：US20210404912A1
公开(公告)日：2021-12-30
申请号：US17469357
申请日：2021-09-08
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Shikui Kevin CHEN
Abstract: A diagnostic system and method that (a) that uses models indicative of both successful firing and skips to determine if cylinders of a skip fire controlled internal combustion engine have successfully fired or successfully skipped and (b) uses filtered exhaust gas pressure readings for detecting faults associated with EGR systems and/or turbocharger systems.
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公开(公告)号：US20210404364A1
公开(公告)日：2021-12-30
申请号：US17459776
申请日：2021-08-27
Applicant: Tula Technology, Inc.
Inventor： Matthew A. YOUNKINS , Shikui Kevin CHEN
Abstract: System and methods are described for optimizing exhaust flow rate and temperature during specified operational periods warm-up and keep-warm conditions, by minimizing or maximizing heat flux during those specified operational periods.
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