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公开(公告)号：US11280276B2
公开(公告)日：2022-03-22
申请号：US17192252
申请日：2021-03-04
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Adya S. Tripathi , Louis J. Serrano
Abstract: Engine controllers and methods are described that facilitate skip fire control of an internal combustion engine. An engine controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. The engine controller selects an operational firing fraction from a set of available firing fractions. A firing controller then directs cylinder firings in a skip fire manner that delivers the selected operational firing fraction. The firing controller includes an accumulator that helps smooth transitions between different firing fractions.
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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：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：US08651091B2
公开(公告)日：2014-02-18
申请号：US13945289
申请日：2013-07-18
Applicant: Tula Technology, Inc.
Inventor： Adya S. Tripathi , Christopher W. Chandler , Christopher C. Hand , Joshua P. Switkes , Mark A. Wilcutts , Matthew A. Younkins
CPC classification number: F02D17/02 , F02D41/0087 , F02D41/047
Abstract: A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. In one aspect, the spark timing associated with each fired working cycle is based at least in part on the firing history of the fired working chamber.
Abstract translation: 描述了用于在跳火可变位移模式中控制内燃机的操作的各种方法和装置。 通常，发动机被控制为以跳火可变排量模式操作。 在一个方面，与每个燃烧的工作循环相关联的火花正时至少部分地基于燃烧的工作室的击发历史。
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公开(公告)号：US09528446B2
公开(公告)日：2016-12-27
申请号：US13654248
申请日：2012-10-17
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Adya S. Tripathi
CPC classification number: F02D17/02 , F02D13/06 , F02D37/02 , F02D41/0087 , F02D2041/286 , F02D2200/101
Abstract: In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the skip fire controller is arranged to select a base firing fraction that has a repeating firing cycle length that will repeat at least a designated number of times per second at the current engine speed. Such an arrangement can be helpful in reducing the occurrence of undesirable vibrations.
Abstract translation: 在各种描述的实施例中，跳过火控制用于传递期望的发动机输出。 控制器确定跳过火焰射击分数以及（适当地）适合于递送请求的输出的相关联的引擎设置。 在一个方面，跳过火控制器布置成选择具有重复的发射周期长度的基本点火分数，其将以当前发动机转速每秒重复至少指定次数。 这种布置可以有助于减少不期望的振动的发生。
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Patent Agency Ranking
公开(公告)号：US08499743B2
公开(公告)日：2013-08-06
申请号：US13723169
申请日：2012-12-20
Applicant: Tula Technology, Inc.
CPC classification number: F02D17/02 , F02D37/02 , F02D41/0087 , F02D41/1401 , F02D41/1402 , F02D41/266 , F02D2041/2027 , F02D2200/602 , F02D2250/18 , F02D2400/02 , F02P5/1512 , Y02T10/142 , Y02T10/46
Abstract: A variety of skip fire engine controllers and control techniques are described. In some preferred embodiments, a skip fire engine controller is provided that includes a firing fraction calculator, an engine settings controller, a firing fraction adjuster and a firing controller. The firing fraction calculator determines a reference firing fraction indicative of a firing fraction suitable for delivering a desired engine output at a reference working chamber firing output. The engine settings controller is arranged to set selected engine settings. The firing fraction adjuster determines an adjusted firing fraction that scales the reference firing fraction appropriately such that the engine will deliver the desired engine output at the current engine settings even when the actual working chamber firing outputs do not equal the reference working chamber firing output. The firing controller direct workings chamber firings in a skip fire manner that delivers the adjusted firing fraction.
Abstract translation: 描述了各种跳火消防车控制器和控制技术。 在一些优选实施例中，提供了一种跳火消防车控制器，其包括点火分数计算器，发动机设置控制器，点火分数调节器和点火控制器。 点火分数计算器确定指示在基准工作室点火输出下适合输送所需发动机输出的点火分数的参考点火分数。 引擎设置控制器被设置为设置所选择的引擎设置。 点火分数调节器确定调节的燃烧分数，适当地缩放参考燃烧分数，使得即使当实际工作室燃烧输出不等于参考工作室点火输出时，发动机也将在当前发动机设置下输送期望的发动机输出。 射击控制器直接工作室以跳火方式发射，从而提供调整后的射击分数。
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公开(公告)号：US10508604B2
公开(公告)日：2019-12-17
申请号：US15937538
申请日：2018-03-27
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Adya S. Tripathi , Louis J. Serrano
Abstract: In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the skip fire controller is arranged to select a base firing fraction that has a repeating firing cycle length that will repeat at least a designated number of times per second at the current engine speed. Such an arrangement can be helpful in reducing the occurrence of undesirable vibrations.
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公开(公告)号：US09964051B2
公开(公告)日：2018-05-08
申请号：US15357398
申请日：2016-11-21
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Adya S. Tripathi , Louis J. Serrano
CPC classification number: F02D17/02 , F02D13/06 , F02D37/02 , F02D41/0087 , F02D2041/286 , F02D2200/101
Abstract: In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the skip fire controller is arranged to select a base firing fraction that has a repeating firing cycle length that will repeat at least a designated number of times per second at the current engine speed. Such an arrangement can be helpful in reducing the occurrence of undesirable vibrations.
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公开(公告)号：US09664130B2
公开(公告)日：2017-05-30
申请号：US13843567
申请日：2013-03-15
Applicant: Tula Technology, Inc.
Inventor： Mark A. Wilcutts , Xin Yuan , Joshua P. Switkes , Li-Chun Chien , Steven E. Carlson , Christopher W. Chandler , Christopher C. Hand , Matthew A. Younkins , Adya S. Tripathi
CPC classification number: F02D41/0087 , F02D41/3058 , F02D2200/0614
Abstract: Various methods and arrangements for determining a combustion control parameter for a working chamber in an engine are described. In one aspect, an engine controller includes a firing counter that stores a firing history for the working chamber. A combustion control module is used to determine a combustion control parameter, which is used to help manage combustion in the working chamber. The combustion control parameter is determined based at least in part on the firing history.
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公开(公告)号：US09086020B2
公开(公告)日：2015-07-21
申请号：US13654244
申请日：2012-10-17
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. Pirjaberi , Adya S. Tripathi , Louis J. Serrano
CPC classification number: F02D17/02 , F02D13/06 , F02D37/02 , F02D41/0087 , F02D2041/286 , F02D2200/101
Abstract: In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the firing fraction is selected from a set of available firing fractions, with the set of available firing fractions varying as a function of engine speed such that more firing fractions are available at higher engine speeds than at lower engine speeds. The controller then direct firings in a skip fire manner that delivers the selected fraction of firings.
Abstract translation: 在各种描述的实施例中，跳过火控制用于传递期望的发动机输出。 控制器确定跳过火焰射击分数以及（适当地）适合于递送请求的输出的相关联的引擎设置。 在一个方面，燃烧部分选自一组可用的燃烧部分，其中可用的燃烧部分的集合作为发动机速度的函数而变化，使得在较高的发动机转速下比在较低的发动机转速下更多的燃烧部分可用。 然后，控制器以点火方式直接点火，从而提供所选择的点火分数。
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