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公开(公告)号：US11982246B2
公开(公告)日：2024-05-14
申请号：US17450101
申请日：2021-10-06
Applicant: Transportation IP Holdings, LLC
Inventor： Jacob Kenneth Pedder , James Robert Mischler
CPC classification number: F02D41/1498 , B61C5/00 , F02D35/027 , F02D41/0025 , F02D41/0027 , F02D41/0082 , F02D41/1402 , F02D41/1497 , F02P5/1527 , F02D2200/0414 , F02D2200/1002 , F02D2200/703 , F02P5/152
Abstract: Methods and systems are provided for controlling fueling and mitigating knock in internal combustion engines, such as multi-fuel engines. In one example, a method may include monitoring a frequency of knock events corresponding to one or more engine cylinders, and dynamically increasing a substitution ratio while the frequency of knock events is less than a maximum action threshold. In some examples, the method may further include actively adjusting one or more engine operating conditions to decrease the substitution ratio responsive to a severity of knocking in the one or more engine cylinders being greater than or equal to a threshold severity.
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公开(公告)号：US20240125281A1
公开(公告)日：2024-04-18
申请号：US18218401
申请日：2023-07-05
Applicant: Mainspring Energy, Inc.
Inventor： Matthew Roelle , Christopher Gadda
CPC classification number: F02D41/1497 , F01B11/00 , F02B63/04 , F02B71/00 , F02B71/04 , F02D29/06 , F02D35/023 , F02D35/024 , F02D41/009 , F02D41/1402
Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.
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公开(公告)号：US20190184959A1
公开(公告)日：2019-06-20
申请号：US15874656
申请日：2018-01-18
Applicant: Tula Technology, Inc.
Inventor： Yongyan CAO , Ying REN , Louis J. SERRANO , Robert Scott BAILEY , Ram SUBRAMANIAN
CPC classification number: B60W10/06 , B60W30/1882 , B60W30/20 , B60W2710/0666 , F02D35/02 , F02D41/0087 , F02D41/1497 , F02D41/1498 , F02D2200/101 , F02D2200/701 , F02D2200/702 , G05D1/0088 , G06K9/00362
Abstract: The present invention relates generally to improving the fuel efficiency of autonomous vehicles by operating either (1) at a first effective engine displacement that takes into account noise, vibration and harshness (NVH) when the vehicle is occupied or (2) at a second effective engine displacement, without concern for occupant NVH, when the vehicle is not occupied. The second effective engine displacement is typically more fuel efficient than the first effective engine displacement, but result in a higher level of NVH compared to the first effective engine displacement.
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公开(公告)号：US20190063357A1
公开(公告)日：2019-02-28
申请号：US16175358
申请日：2018-10-30
Applicant: EtaGen, Inc.
Inventor： Matthew Roelle , Christopher Gadda
CPC classification number: F02D41/1497 , F01B11/00 , F02B63/04 , F02B71/00 , F02B71/04 , F02D35/023 , F02D35/024 , F02D41/009
Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.
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公开(公告)号：US20180216557A1
公开(公告)日：2018-08-02
申请号：US15745885
申请日：2016-06-15
Applicant: Robert Bosch GmbH
Inventor： Benjamin Klein , Tobias Trzebiatowski , Andreas Greis , Bernd Schroeder , Istvan Deak , Mario Kaepple , Martin Henger
CPC classification number: F02D41/083 , F02B67/06 , F02D41/1497 , F02D2200/101 , F02D2250/24 , F02N11/04 , F02N11/108 , F02N15/08 , F02N2200/022 , F02N2200/042 , F02N2300/104 , F16H7/12 , F16H7/1281 , F16H2007/0808 , F16H2007/0865 , F16H2007/0874 , F16H2007/0893
Abstract: A method for ascertaining an accuracy of a torque transmitted by a belt-driven starter generator of an internal combustion engine to the internal combustion engine, the method being similar to a learning operation or a calibration of the actual torque of the starter generator with respect to a setpoint torque, includes: in an idling instance of the internal combustion engine, controlling the belt-driven starter generator to transmit a specified test torque to the internal combustion engine and decreasing the torque of the internal combustion engine by the specified test torque; determining and evaluating a speed variable, which is a function of a speed of the internal combustion engine; and deducing the torque accuracy from the evaluated speed variable.
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Patent Agency Ranking
公开(公告)号：US20180179981A1
公开(公告)日：2018-06-28
申请号：US15905431
申请日：2018-02-26
Applicant: Ford Global Technologies, LLC
Inventor： Dennis E. Homant , Bradley Dean Riedle , David James Liller
CPC classification number: F02D41/26 , B60K25/02 , F02B67/04 , F02D41/0002 , F02D41/0097 , F02D41/0215 , F02D41/045 , F02D41/083 , F02D41/1497 , F02D41/16 , F02D41/3005 , F02D41/3064 , F02D2200/1006 , F02D2250/21 , F02D2400/12
Abstract: Methods and systems are provided for controlling a vehicle engine to deliver desired torque to a power take off device coupled to the engine. In one example, the method may include, learning a filtered PTO torque demand during vehicle acceleration, and steady state operation, and during transition in engine states using the learned PTO torque demand to adjust engine speed in order to deliver a desired engine torque output for optimal operation of the PTO device.
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公开(公告)号：US20180171918A1
公开(公告)日：2018-06-21
申请号：US15580316
申请日：2016-05-26
Applicant: Scania CV AB
Inventor： Björn JOHANSSON , Carl SVÄRD
CPC classification number: F02D41/1497 , B60K28/16 , B60W10/06 , F02D41/22 , F02D41/221 , F02D41/2445 , F02D41/248 , F02D2041/224 , F02D2041/286 , F02D2200/021 , F02D2200/0406 , F02D2200/0612 , F02D2200/1002 , F02D2200/1004 , F02D2200/101 , G01M15/042 , Y02T10/40
Abstract: A method and a system for detection of torque deviations of an engine (101) in a vehicle (100). A measurement (201) is made of actual measured values Dact related to a behavior of at least one parameter which is related to an actual torque Meng_act delivered by the engine (101). This actual torque Meng_act is delivered here by the engine (101) in consequence of a torque Meng_req demanded from the engine (101). A comparison (202) is then made of the actual measured values Dact which are related to the behavior of the at least one parameter with previously determined measured values Dref of correspondingly at least one respective parameter related to the actual torque Meng_act. The previously determined measured values Dref will here have been determined during normal operation of the vehicle (100). Detection is then made of whether the actual measured actual torque Meng_act deviates from the demanded torque Mengj-eq. The detection is based here on the comparison of the actual measured values Dact with the previously determined measured values Dref.
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8.发明申请公开(公告)号：US20180156149A1
公开(公告)日：2018-06-07
申请号：US15369114
申请日：2016-12-05
Applicant: Caterpillar Inc.
Inventor： Michael Campagna , Andrew Billing , Dereck Heffron , Brian Wheeler
CPC classification number: F02D41/22 , F02D41/1443 , F02D41/1446 , F02D41/1497 , F02D2041/001 , F02D2041/286 , G01M15/05
Abstract: A system for detecting a fault condition in a valvetrain of an engine is configured to measure one or more operating parameters associated with the engine and determine if the operating parameters satisfy pre-defined corresponding boundary conditions. If so, a pair of values of at least one performance parameter is measured corresponding to measurement on a first and second bank of cylinders present on the engine. The difference between the pair of values is determined and used to compute at least one measure of variation for the at least one performance parameter in a time segment. If the at least one measure of variation for the at least one performance parameter exceeds a pre-defined limit for the engine, the valvetrain is flagged as faulty.
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公开(公告)号：US09988949B2
公开(公告)日：2018-06-05
申请号：US14520174
申请日：2014-10-21
Applicant: Ford Global Technologies, LLC
Inventor： Paul A. Pietrzyk , John Eric Rollinger , Jamie Charles Hanshaw , Ed Badillo , Gilbert Fournelle
CPC classification number: F01L1/34409 , F01L1/047 , F01L1/053 , F01L1/3442 , F01L2001/3443 , F01L2001/34433 , F01L2001/34453 , F01L2250/02 , F01L2250/04 , F01L2800/00 , F01L2810/02 , F01M1/02 , F02D31/001 , F02D41/042 , F02D41/064 , F02D41/1497 , F02D41/22 , F02D41/221 , F02D41/222 , F02D2041/001 , F02D2200/023 , F02D2200/024
Abstract: Methods and systems are described for an engine with a cam torque actuated variable cam timing phaser. Phaser positioning control is improved by reducing inaccuracies resulting from inadvertent spool valve and/or phaser movement when the spool valve is commanded between regions. In addition, improved spool valve mapping is used to render phaser commands more consistent and robust.
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公开(公告)号：US09944400B2
公开(公告)日：2018-04-17
申请号：US14618095
申请日：2015-02-10
Applicant: Sikorsky Aircraft Corporation
Inventor： Robert J. Andrejczyk , David H. Sweet
IPC: G06F19/00 , G06G7/70 , B64D31/06 , F02D41/02 , F02D41/10 , B60R16/03 , B64D43/00 , B64D45/00 , F02D41/14 , F02D29/02
CPC classification number: B64D31/06 , B60R16/03 , B64D43/00 , B64D45/00 , B64D2221/00 , F02D29/02 , F02D41/021 , F02D41/10 , F02D41/1497 , F02D2250/18 , F02D2250/22
Abstract: A method of adaptive engine acceleration for accessory loads includes receiving an accessory load indicator corresponding to an accessory load of an engine. The accessory load indicator is compared to an adjustment threshold. An acceleration rate of the engine is increased based on determining that the accessory load indicator is below the adjustment threshold. The acceleration rate of the engine is decreased based on determining that the accessory load indicator is above the adjustment threshold.
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