公开(公告)号：US09784644B2

公开(公告)日：2017-10-10

申请号：US14880652

申请日：2015-10-12

Applicant: Tula Technology Inc.

Inventor： Shikui Kevin Chen ,  Masaki Nagashima ,  Li-Chun Chien

IPC: G01M15/11 ,  F02D35/02 ,  F02D41/22 ,  F02D41/00

CPC classification number: G01M15/11 ,  F02D35/024 ,  F02D41/0087 ,  F02D41/0097 ,  F02D41/22 ,  F02D2200/1012 ,  F02D2200/1015

Abstract: A variety of methods and arrangements for detecting misfire and other engine-related errors are described. In one aspect, a window is assigned to a target firing opportunity for a target working chamber. There is an attempt to fire a target working chamber during the target firing opportunity. A change in an engine parameter (e.g., crankshaft angular acceleration) is measured during the window. A model (e.g., a pressure model) is used to help determine an expected change in the engine parameter during the target firing opportunity. Based on a comparison of the expected change and the measured change in the engine parameter, a determination is made as to whether an engine error (e.g., misfire) has occurred.

公开(公告)号：US09745905B2

公开(公告)日：2017-08-29

申请号：US14857371

申请日：2015-09-17

Applicant: Tula Technology, Inc.

Inventor： Mohammad R. Pirjaberi ,  Louis J. Serrano ,  Xin Yuan ,  Steven E. Carlson ,  Siamak Hashemi ,  Ryan A. Kuhlenbeck

IPC: F02D41/00 ,  F02D37/02 ,  F02P5/15 ,  F02D17/02 ,  F02D41/28

CPC classification number: F02D37/02 ,  F02D17/02 ,  F02D41/0002 ,  F02D41/0087 ,  F02D2041/286 ,  F02D2200/0406 ,  F02D2200/101 ,  F02P5/1504 ,  Y02T10/42 ,  Y02T10/46

Abstract: Methods and arrangements are described for controlling transitions between firing fractions during skip fire operation of an engine in order to help smooth the transitions. Generally, firing fractions transitions are implemented gradually, preferably in a manner that relatively closely tracks manifold filling dynamics. In some embodiments, the commanded firing fraction is altered each firing opportunity. Another approach contemplates altering the commanded firing fraction by substantially the same amount each firing opportunity for at least a portion of the transition. These approaches work particularly well when the commanded firing fraction is provided to a skip fire controller that includes an accumulator functionality that tracks the portion of a firing that has been requested, but not delivered, or vice versa. In various embodiments, commanded firing fraction changes are delayed relative to initiation of the change in throttle position to help compensate for inherent delays associated with changing the manifold air pressure.

公开(公告)号：US09689328B2

公开(公告)日：2017-06-27

申请号：US15274029

申请日：2016-09-23

Applicant: Tula Technology, Inc.

Inventor： Matthew A. Younkins ,  Louis J. Serrano

IPC: F02D41/00 ,  F02D41/04 ,  F02D13/06 ,  F02D13/02 ,  F02D17/02 ,  F02D41/10 ,  F02D41/12 ,  F02P5/145 ,  F01L1/047 ,  F02D41/26 ,  F02P5/15

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.

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

IPC: F02D41/00 ,  F02D41/30

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.

公开(公告)号：US09387849B2

公开(公告)日：2016-07-12

申请号：US14743581

申请日：2015-06-18

Applicant: Tula Technology Inc.

Inventor： Ihab S. Soliman ,  Mark A. Shost

IPC: B60L9/00 ,  B60W20/00 ,  F02D17/02 ,  B60W10/06 ,  F02D29/02 ,  F02D41/30 ,  F02N11/08 ,  F02P5/15 ,  F02N11/04

CPC classification number: B60W20/00 ,  B60W10/06 ,  F02D17/02 ,  F02D29/02 ,  F02D41/3058 ,  F02D2200/0406 ,  F02N11/04 ,  F02N11/0829 ,  F02N2011/0896 ,  F02N2200/022 ,  F02P5/1506 ,  Y02T10/46 ,  Y02T10/48 ,  Y10S903/905

Abstract: A variety of methods and arrangements for implementing a start/stop feature in a skip fire engine control system are described. In one aspect, the implementation of the start/stop feature involves automatically turning off an internal combustion engine under selected circumstances during a drive cycle. A determination is made that the engine should be restarted. During the engine startup period, the engine is operated in a skip fire manner such that a desired engine speed is reached.

Abstract translation: 描述了用于在跳过消防车控制系统中实现起动/停止特征的各种方法和装置。 在一个方面，启动/停止特征的实现涉及在驱动循环期间在选择的情况下自动关闭内燃机。 确定发动机应重新启动。 在发动机启动期间，发动机以跳火方式操作，使得达到期望的发动机转速。

公开(公告)号：US09200575B2

公开(公告)日：2015-12-01

申请号：US14203444

申请日：2014-03-10

Applicant: Tula Technology Inc.

Inventor： Mark A. Shost

IPC: F02D17/02

CPC classification number: F02D17/02

Abstract: Various methods and data structures for managing transition between different firing fractions during skip fire operation of an engine are described. In some embodiments, transitions are constrained to occur when firing sequence segments of a designated length are shared by the first and second firing fractions. In a separate aspect, a data structure that uses current firing fraction phase as a first index and a target firing fraction as a second index may be used to determine a phase of the target firing fraction to enter at a transition. Is some circumstances transitions between a current and target firing fraction may be conducted as a series of steps through intermediate firing fractions.

Abstract translation: 描述了用于管理在发动机的跳火操作期间在不同的点火分数之间的转换的各种方法和数据结构。 在一些实施例中，当第一和第二击发分数共享指定长度的点火序列片段时，限制转变发生。 在单独的方面，可以使用使用当前点火分数相位作为第一指数的数据结构和作为第二指标的目标点火分数，以确定目标燃烧分数在转变时进入的相位。 当前和目标点火分数之间的某些情况转变可以通过中间火花分数进行一系列步骤。

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

IPC: F02D17/02 ,  F02D41/00 ,  F02D13/06 ,  F02P5/15 ,  G06F17/00 ,  F02D37/02 ,  F02D41/28

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。

公开(公告)号：US08839766B2

公开(公告)日：2014-09-23

申请号：US13799389

申请日：2013-03-13

Applicant: Tula Technology, Inc.

Inventor： Louis J. Serrano

IPC: F02D17/02 ,  F02D41/00

CPC classification number: F02D41/0087 ,  F02D2250/21

Abstract: A variety of methods and arrangements for managing transitions between operating states for an engine are described. In one aspect, an engine is operated in a particular operating state. A transition is made to another operating state. During that transition, the engine is operated in a skip fire manner.

Abstract translation: 描述了用于管理用于发动机的操作状态之间的转换的各种方法和布置。 在一个方面，发动机在特定的操作状态下操作。 转换到另一个操作状态。 在过渡期间，发动机以跳火方式运行。

公开(公告)号：US20140041626A1

公开(公告)日：2014-02-13

申请号：US13963819

申请日：2013-08-09

Applicant: Tula Technology, Inc.

Inventor： Mark A. WILCUTTS ,  Xin YUAN ,  Joshua P. SWITKES ,  Steven E. CARLSON ,  John F. IMPEDUGLIA ,  John W. PARSELS

IPC: F02D41/00

CPC classification number: B60W30/20 ,  B60W10/026 ,  B60W10/08 ,  B60W2030/203 ,  B60W2710/025 ,  F02D11/105 ,  F02D41/00 ,  F02D41/0087 ,  F02D41/022 ,  F02D41/18 ,  F02D2250/18

Abstract: A variety of methods and devices for mitigating power train vibration during skip fire operation of an engine are described. In one aspect, the slip of a drive train component (such as a torque converter clutch) is based at least in part upon a skip fire characteristic (such as firing fraction, selected firing sequence/pattern, etc.) during skip fire operation of an engine. The modulation of the drive train component slip can also be varied as a function of one or more engine operating parameters such as engine speed and/or a parameter indicative of the output of fired cylinders (such as mass air charge).

Abstract translation: 描述了用于减轻发动机的跳火操作期间的动力传动系振动的各种方法和装置。 一方面，传动系部件（例如变矩器离合器）的滑动至少部分地基于跳过火焰运行期间的跳火特性（例如点火分数，选择的点火顺序/图案等） 一个引擎 传动系组件滑动的调制也可以作为一个或多个发动机操作参数（诸如发动机转速和/或指示燃烧气缸的输出的参数（例如大气压））的函数而变化。

公开(公告)号：US08464690B2

公开(公告)日：2013-06-18

申请号：US13672466

申请日：2012-11-08

Applicant: Ronald D. Yuille ,  Mark A. Shost ,  Louis J. Serrano ,  Adya S. Tripathi

Inventor： Ronald D. Yuille ,  Mark A. Shost ,  Louis J. Serrano ,  Adya S. Tripathi

IPC: B60W20/00 ,  F02D41/00 ,  G06F19/00

CPC classification number: B60W20/00 ,  B60K6/48 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  B60W2510/244 ,  B60W2710/0666 ,  F02D17/02 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/0087 ,  F02D41/1401 ,  F02D41/1402 ,  F02D41/266 ,  F02D2041/2027 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2400/02 ,  F02P5/1512 ,  Y02T10/42 ,  Y02T10/46 ,  Y02T10/6221

Abstract: A variety of methods and arrangements for operating an internal combustion engine and one or more motor/generators in a hybrid vehicle are described. In various embodiments, the engine is operated in a skip fire mode. Depending on the state of charge of an energy storage device and/or other factors, the engine is operated to generate more or less than a desired level of torque. The one or more motor/generators are used to add or subtract torque so that the motor/generator(s) and the engine collectively deliver the desired level of torque. In some embodiments, the engine may be run with a substantially open throttle to reduce pumping losses and improve fuel efficiency.

Abstract translation: 描述了用于操作混合动力车辆中的内燃机和一个或多个电动机/发电机的各种方法和装置。 在各种实施例中，发动机以跳火模式操作。 根据能量存储装置的充电状态和/或其他因素，发动机被操作以产生大于或小于期望的扭矩水平。 一个或多个电动机/发电机用于增加或减少转矩，使得电动机/发电机和发动机共同提供所需的扭矩水平。 在一些实施例中，发动机可以以基本上打开的节气门运行，以减少泵送损失并提高燃料效率。