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31.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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公开(公告)号：US10400691B2
公开(公告)日：2019-09-03
申请号：US15894548
申请日：2018-02-12
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 , F02D41/04 , F02D13/02 , F02D13/06 , F02P5/15 , F02D41/26 , F01L1/047 , F02P5/145 , F02D41/12 , F02D41/10 , F02D17/02 , G10K11/178 , F02N11/08 , G10K11/16 , F16F15/02 , F02P9/00
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：US10273894B2
公开(公告)日：2019-04-30
申请号：US15939074
申请日：2018-03-28
Applicant: Tula Technology, Inc.
Inventor： Adya S. Tripathi
IPC: F02D41/00 , F02D37/02 , F02D41/14 , F02D41/26 , F02P5/15 , F02D17/02 , F02B75/02 , F02D13/06 , F02D41/30 , F02P5/04
Abstract: A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines based on skip fire operation of the engine are described. In one aspect the skip fire decisions are made on a working cycle by working cycle basis. During selected skipped working cycles, the corresponding cylinders are deactivated such that air is not pumped through the cylinder during the selected skipped working cycles. In some implementations, the cylinders are deactivated by holding associated intake and exhaust valves closed such that an air charge is not present in the working chamber during the selected skipped working cycles.
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公开(公告)号：US10233796B2
公开(公告)日：2019-03-19
申请号：US14705712
申请日：2015-05-06
Applicant: Tula Technology, Inc.
Inventor： Mark A. Shost , Matthew A. Younkins
Abstract: An internal combustion engine capable of cylinder deactivation or skip fire control in combination with variable valve lift control. One bank of cylinders can be deactivated while the air induction of the other bank of cylinders is regulated using variable valve lift control to increase engine efficiency. An internal combustion engine with two cylinder banks, where control of one cylinder bank using skip fire control can be operating at an appropriate firing fraction in combination with variable valve lift control on the other cylinder bank. A single bank of cylinders can be controlled in a skip fire manner in conjunction with variable valve lift control.
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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：US20180266347A1
公开(公告)日：2018-09-20
申请号：US15982406
申请日：2018-05-17
Applicant: Tula Technology, Inc.
Inventor： Jerry F. FUSCHETTO , Matthew A. YOUNKINS , Ihab S. SOLIMAN , Mark WILCUTTS
CPC classification number: F02D41/0087 , F02D13/0207 , F02D13/06 , F02D41/0085 , F02D41/123 , F02D41/1406 , F02D2041/0012 , F02D2041/1412 , F02D2041/1433 , F02D2200/1004 , F02D2250/18 , Y02T10/18
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：US10072592B2
公开(公告)日：2018-09-11
申请号：US15485000
申请日：2017-04-11
Applicant: Tula Technology, Inc.
Inventor： Matthew A. Younkins , Louis J. Serrano
IPC: F02D13/06 , F02D41/00 , F01L1/047 , F02D13/02 , F02D17/02 , F02D11/02 , F02D41/26 , F02P5/15 , F02D41/12
CPC classification number: F02D41/0087 , F01L1/047 , F02D11/02 , F02D13/0223 , F02D13/0273 , F02D13/06 , F02D17/02 , F02D41/0002 , F02D41/008 , F02D41/04 , F02D41/107 , F02D41/123 , F02D41/26 , F02D2041/001 , F02D2041/0012 , F02D2250/18 , F02P5/145 , F02P5/1502 , Y02T10/142 , Y02T10/42
Abstract: In one aspect, a method for controlling operation of an internal combustion engine is described. The engine is operated in a skip fire manner such that selected skipped working cycles are skipped and selected active working cycles are fired to deliver a desired engine output. A particular level of torque output is selected for each of the fired working chambers. Various methods, arrangements and systems related to the above method are also described.
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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：US10060368B2
公开(公告)日：2018-08-28
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 , 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：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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