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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：US09891137B2
公开(公告)日：2018-02-13
申请号：US15641097
申请日：2017-07-03
Applicant: Tula Technology, Inc.
Inventor： Shikui Kevin Chen , Allan J. Kotwicki , Joel D. Van Ess , Robert S. Bailey , Mohammad R. Pirjaberi
CPC classification number: G01M15/05 , F02M35/1038 , G01M15/09
Abstract: A variety of methods and arrangements for detecting failure of the commanded air induction in an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored. An air induction event generates a fluctuation in the intake manifold pressure, which is recorded. The signal is processed through a diagnostic filter to help determine whether the actual induction matched the commanded induction. In other embodiments, measured crankshaft acceleration is compared with estimated crankshaft acceleration. If the two quantities differ by a threshold amount an induction fault is detected. The two detection methods may also be combined. The describe approaches are particularly well suited for use in engines operating in a skip fire mode with cylinder deactivation and/or a dynamic firing level modulation mode.
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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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公开(公告)号：US20170342922A1
公开(公告)日：2017-11-30
申请号：US15679498
申请日：2017-08-17
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. PIRJABERI , Kian EISAZADEH-FAR , Steven E. CARLSON , Louis J. SERRANO
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：US20170234253A1
公开(公告)日：2017-08-17
申请号：US15584686
申请日：2017-05-02
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Robert C. WANG
CPC classification number: F02D41/12 , F01N11/007 , F02D17/02 , F02D17/04 , F02D29/02 , F02D41/003 , F02D41/0087 , F02D41/126 , F02D2009/024 , F02D2041/0012 , F02D2200/0406 , F02D2250/08 , F02D2250/41 , F02M25/089 , F02M35/10222 , F02M35/10229
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 begin with reactivating cylinders to pump air to reduce the pressure in the intake manifold prior to firing any cylinders. In another aspect, transitions from DCCO, involve the use of an air pumping skip fire operational mode. After the manifold pressure has been reduced, the engine may transition to either a cylinder deactivation skip fire operational mode or other appropriate operational mode. In yet another aspect a method of transitioning into DCCO using a skip fire approach is described. In this aspect, the fraction of the working cycles that are fired is gradually reduced to a threshold firing fraction. All of the working chambers are then deactivated after reaching the threshold firing fraction.
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Patent Agency Ranking
公开(公告)号：US09689327B2
公开(公告)日：2017-06-27
申请号：US14919018
申请日：2015-10-21
Applicant: Tula Technology, Inc.
Inventor： Matthew A. Younkins , Louis J. Serrano
IPC: F02D41/00 , F02D41/14 , F02D41/26 , F02P5/15 , F02D17/02 , F02D37/02 , F02D41/12 , F02D13/02 , F02D13/06 , F02P9/00
CPC classification number: F02D41/0087 , F02D13/0269 , F02D13/06 , F02D17/02 , F02D37/02 , F02D41/126 , F02D41/1401 , F02D41/266 , F02D2200/602 , F02D2250/18 , F02D2400/02 , F02P5/1512 , F02P9/002 , Y02T10/142 , Y02T10/46
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, engine controllers, arrangements and systems related to the above method are also described.
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公开(公告)号：US20170009729A1
公开(公告)日：2017-01-12
申请号：US15274029
申请日：2016-09-23
Applicant: Tula Technology, Inc.
Inventor： Matthew A. YOUNKINS , Louis J. SERRANO
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.
Abstract translation: 一方面，对内燃机的运转控制方法进行说明。 发动机以跳火方式操作，使得跳过所选择的跳过的工作循环并且激发选择的主动工作循环以输送期望的发动机输出。 对于每个烧制工作室选择特定水平的扭矩输出。 还描述了与上述方法相关的各种方法，布置和系统。
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公开(公告)号：US09541050B2
公开(公告)日：2017-01-10
申请号：US14729973
申请日：2015-06-03
Applicant: Tula Technology, Inc.
Inventor： Adya S. Tripathi , Chester J. Silvestri
CPC classification number: F02D41/0087 , F02B75/02 , F02B2075/027 , F02D13/06 , F02D17/02 , F02D37/02 , F02D41/1401 , F02D41/26 , F02D41/266 , F02D41/30 , F02D2200/0614 , F02D2200/602 , F02D2250/18 , F02D2400/02 , F02P5/045 , F02P5/1512 , Y02T10/46
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.
Abstract translation: 描述了基于发动机的跳火操作来提高内燃机的燃料效率的各种方法和装置。 在一个方面，跳过的火灾决定是在工作循环的基础上进行的。 在选择的跳过工作循环期间，相应的气缸被停用，使得在所选择的跳过工作循环期间空气不被泵送通过气缸。 在一些实施方案中，气缸通过保持关联的进气和排气阀而关闭，使得在所选择的跳过的工作循环期间在工作室中不存在空气装料。
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公开(公告)号：US20160326969A1
公开(公告)日：2016-11-10
申请号：US14704747
申请日：2015-05-05
Applicant: Tula Technology Inc.
Inventor： Louis J. SERRANO , Mohammad R. PIRJABERI , Charles H. LOUCKS
CPC classification number: F02D17/02 , F02D41/0087 , F02D41/0097 , F02D41/18 , F02D2041/0012 , F02D2041/1422 , F02D2041/1432 , F02D2041/286
Abstract: A variety of methods, devices and filters are described that are suitable for averaging measured power train operating parameters over a period that varies as a function of an engine cylinder firing characteristic such as a current operational firing fraction or firing sequence. The averaged measured operating parameter may be used in a variety of different engine control related functions, calculations and/or operations. The described techniques and devices are particularly well suited for use during skip fire operation of an engine.
Abstract translation: 描述了各种各样的方法，装置和过滤器，其适用于在作为发动机气缸点火特性（例如当前的操作点火分数或点火顺序）的函数变化的周期内平均测量的动力系运行参数。 平均测量的操作参数可用于各种不同的发动机控制相关功能，计算和/或操作。 所描述的技术和装置特别适用于在发动机的跳火操作期间使用。
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公开(公告)号：US09476373B2
公开(公告)日：2016-10-25
申请号：US15180332
申请日：2016-06-13
Applicant: Tula Technology, Inc.
Inventor： Matthew A. Younkins , Louis J. Serrano
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.
Abstract translation: 一方面，对内燃机的运转控制方法进行说明。 发动机以跳火方式操作，使得跳过所选择的跳过的工作循环并且激发选定的主动工作循环以输送期望的发动机输出。 对于每个烧制工作室选择特定水平的扭矩输出。 还描述了与上述方法相关的各种方法，布置和系统。
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