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公开(公告)号：US20140261317A1
公开(公告)日：2014-09-18
申请号：US14207109
申请日：2014-03-12
Applicant: Tula Technology Inc.
Inventor： Charles H. LOUCKS , Joel D. VAN ESS , Siamak HASHEMI , Louis J. SERRANO , Mohammad R. PIRJABERI , Shikui Kevin CHEN , Matthew A. YOUNKINS , Mark A. SHOST , Mark A. WILCUTTS
IPC: F02D35/02
CPC classification number: F02D41/0087 , F02D19/0623 , F02D41/22 , F02D41/3058 , F02D2200/025 , F02D2200/1004 , F02D2200/101 , F02D2200/1012 , F02D2200/1015 , F02D2250/14 , G01M15/11
Abstract: A variety of methods and arrangements for detecting misfire in a skip fire engine control system are described. In one aspect, a window is assigned to a target firing opportunity for a target working chamber. A change in an engine parameter is measured during the window. A determination is made as to whether a firing opportunity before the target firing opportunity is a skip or a fire and/or whether a firing opportunity after the target firing opportunity is a skip or a fire. Based at least in part on this skip/fire determination, a determination is made as to whether the target working chamber has misfired. In various embodiments, if the target working chamber is identified as persistently misfiring, the firing sequence is modified so that the target working chamber is deactivated and excluded from the firing sequence. In still other embodiments, a torque model is used to detect engine-related problems.
Abstract translation: 描述了用于检测跳火消防车控制系统中的失火的各种方法和装置。 在一个方面，将窗口分配给目标工作室的目标发射机会。 在窗口期间测量发动机参数的变化。 确定目标射击机会之前的射击机会是否是跳跃或火灾，和/或目标射击机会之后的射击机会是否是跳跃或火灾。 至少部分地基于该跳过/确定，确定目标工作室是否失火。 在各种实施例中，如果目标工作室被识别为持续地失火，则对燃烧序列进行修改，使得目标工作室被停用并从烧制序列中排除。 在其他实施例中，使用扭矩模型来检测发动机相关问题。
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公开(公告)号：US20140041641A1
公开(公告)日：2014-02-13
申请号：US13961701
申请日：2013-08-07
Applicant: Tula Technology, Inc.
Inventor： Steven E. CARLSON , Xin YUAN , Joshua P. SWITKES , Louis J. SERRANO
IPC: F02M25/08
CPC classification number: F02M25/08 , F02D17/02 , F02D29/02 , F02D41/003 , F02D41/0087 , F02D2009/024 , F02D2250/08 , F02D2250/41 , F02M25/089 , F02M35/10222 , F02M35/10229
Abstract: A variety of methods and arrangements are described for selectively reducing intake manifold pressure in a skip fire engine control system. In some embodiments, a throttle is adjusted to generate a manifold vacuum, which is used for various applications, including but not limited to purging a fuel vapor canister, reducing pressure within a brake vacuum booster reservoir and/or venting gas from a crankcase interior. An engine firing fraction is increased to help maintain a desired torque level. Other techniques for reducing the intake manifold pressure are also described, such as applications involving a return to idle.
Abstract translation: 描述了各种方法和布置，用于选择性地减少跳火消防车控制系统中的进气歧管压力。 在一些实施例中，调节节气门以产生歧管真空，其用于各种应用，包括但不限于清除燃料蒸汽罐，降低制动真空助力器容器内的压力和/或从曲轴箱内部排出气体。 发动机点火分数增加以帮助保持期望的转矩水平。 还描述了用于降低进气歧管压力的其它技术，例如涉及返回空转的应用。
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公开(公告)号：US20140041625A1
公开(公告)日：2014-02-13
申请号：US13963686
申请日：2013-08-09
Applicant: Tula Technology, Inc.
Inventor： Mohammad R. PIRJABERI , Steven E. CARLSON , Louis J. SERRANO , Xin YUAN , Li-Chun CHIEN
IPC: F02D41/00
CPC classification number: F02D41/00 , F02D11/105 , F02D17/02 , F02D41/0087 , F02D41/0225 , F02D41/2422 , F02D2250/18
Abstract: The described embodiments relate generally to skip fire control of internal combustion engines and particularly to mechanisms for determining a desired operational firing fraction. In some embodiments, a firing fraction determining unit is arranged to determine a firing fraction suitable for delivering a requested engine output. The firing fraction determining unit may utilize data structures such as lookup tables in the determination of the desired firing fraction. In one aspect the desired engine output and one or more operational power train parameters such as current engine speed, are used as indices to a lookup table used to select a desired firing fraction. In other embodiments, additional indices to the data structure may include any one of: transmission gear; manifold absolute pressure (MAP); manifold air temperature; a parameter indicative of mass air charge (MAC); cam position; cylinder torque output; maximum permissible manifold pressure; vehicle speed; and barometric pressure.
Abstract translation: 所描述的实施例总体上涉及跳过内燃机的火灾控制，特别涉及用于确定期望的操作燃烧部分的机构。 在一些实施例中，排放分数确定单元布置成确定适于递送所要求的发动机输出的点火分数。 射击分数确定单元可以在确定期望的击发分数时利用诸如查找表的数据结构。 在一个方面，将期望的发动机输出和一个或多个操作动力系参数（例如当前发动机转速）用作用于选择期望的发动部分的查找表的索引。 在其他实施例中，数据结构的附加索引可以包括以下任何一个：传动齿轮; 歧管绝对压力（MAP）; 歧管空气温度; 指示质量空气充注（MAC）的参数; 凸轮位置 气缸扭矩输出; 最大允许歧管压力; 车速; 和大气压力。
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公开(公告)号：US20130096759A1
公开(公告)日：2013-04-18
申请号：US13681378
申请日：2012-11-19
Applicant: TULA TECHNOLOGY INC.
Inventor： Leo G. BRETON , Ronald D. YUILLE , Mark A. SHOST , Louis J. SERRANO
CPC classification number: B60W20/10 , B60K6/28 , B60K6/485 , B60W10/06 , B60W10/08 , B60Y2300/435 , B60Y2400/114 , Y02T10/6226 , Y02T10/6286 , Y10S903/93
Abstract: Methods and arrangements for controlling hybrid powertrains are described. In one aspect, an engine is alternatingly operated at different effective displacements. One displacement delivers less than a requested powertrain output and the other delivers more. A motor/generator system is used to add and subtract torque to/from the powertrain to cause the net delivery of the requested powertrain output. In some embodiments, energy added and subtracted from the powertrain is primarily drawn from and stored in a capacitor (e.g., a supercapacitor or an ultracapacitor) when alternating between effective displacements. In another aspect a hybrid powertrain arrangement includes an engine a motor/generator and an energy storage system that includes both a battery and a capacitor. The capacitor stores and delivers electrical energy to the motor/generator unit during operation of the engine in a variable displacement or skip fire mode.
Abstract translation: 描述了控制混合动力系的方法和布置。 在一个方面，发动机以不同的有效位移交替地操作。 一个位移传递小于所请求的动力总成输出，另一个输送更多。 电动机/发电机系统用于向/从动力系增加和减少扭矩，以使得所需动力系统输出的净运送。 在一些实施例中，当在有效位移之间交替时，从动力系中加入和减去的能量主要从电容器（例如超级电容器或超级电容器）中抽出并存储。 在另一方面，一种混合式动力总成装置包括发动机，电动机/发电机和包括电池和电容器的能量存储系统。 电容器在发动机运行中以可变排量或跳火模式存储并向电动机/发电机单元传送电能。
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公开(公告)号：US20130096758A1
公开(公告)日：2013-04-18
申请号：US13654217
申请日：2012-10-17
Applicant: Tula Technology, Inc.
Inventor： Ronald D. YUILLE , Mark A. SHOST , Louis J. SERRANO
CPC classification number: B60W20/50 , B60K6/485 , B60W10/06 , B60W10/08 , B60W20/00 , B60W20/16 , B60W2510/244 , B60W2710/0666 , B60W2710/083 , Y02T10/6226 , Y02T10/6286 , Y02T10/92
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. Generally, the engine is operated in a variable displacement or 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。 通常，发动机以可变排量或跳火模式操作。 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。
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Patent Agency Ranking
公开(公告)号：US20230227041A1
公开(公告)日：2023-07-20
申请号：US17576160
申请日：2022-01-14
Applicant: Tula Technology, Inc.
Inventor： Louis J. SERRANO , Xiaoping CAI , Andrew W. PHILLIPS
CPC classification number: B60W30/19 , F02D41/0225 , F02D41/0087 , B60W10/11 , B60W10/06 , F02D2200/501 , F02D2200/101
Abstract: Methods and controllers for controlling engine speed to reduce NVH that occurs in conjunction with transmission shifts are described. In some embodiments, when a transmission shift to a target gear is expected, a target engine speed appropriate for the target gear is first determined. A target rate of change of the engine speed is calculated from the initial engine speed and target engine speed in conjunction with a target transition time. A target torque is then calculated from the target rate of change of engine speed. A target firing fraction or induction ratio are determined that are desired for use with the target engine speed based on the target torque. The transition to the target engine speed and target firing fraction or induction ratio are completed before the gear shift is completed. The described approaches are well suited for use during skip fire or other cylinder output level modulation operation of the engine.
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公开(公告)号：US20230220810A1
公开(公告)日：2023-07-13
申请号：US18180362
申请日：2023-03-08
Applicant: Tula Technology, Inc.
Inventor： Robert C. WANG , Louis J. SERRANO , Shikui Kevin CHEN
CPC classification number: F02D41/221 , F02D41/0087 , F02D41/009 , F02D13/0242 , F02D13/06 , F02D2200/0406
Abstract: A method of operating an engine is provided. An exhaust valve actuation fault is detected for a first exhaust valve associated with a first cylinder during a first working cycle. In response to the detection of the exhaust valve actuation fault, fueling to at least the first cylinder is cut off. Actuation of the first exhaust valve is attempted in second working cycles that follow the first working cycle, wherein the second working cycles are not fueled. Whether or not the first exhaust valve actuated properly during the second working cycles is determined. Operation of the first cylinder is resumed when it is determined that the first exhaust valve actuated properly. Operation of the first cylinder is not resumed when it is determined that the first exhaust valve did not actuate properly.
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公开(公告)号：US20220251992A1
公开(公告)日：2022-08-11
申请号：US17686247
申请日：2022-03-03
Applicant: Tula Technology, Inc.
Inventor： Shikui Kevin CHEN , Matthew A. YOUNKINS , Louis J. SERRANO
Abstract: A skip fire engine controller and method of control is described wherein during transitions from a first firing density to a second firing density, a firing density and a pumping density are separately set so as to balance the conflicting demands of (a) torque control, (b) Noise, Vibration and Harshness (NVH), (c) air flow through the engine and (d) air-fuel ratio.
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公开(公告)号：US20220220919A1
公开(公告)日：2022-07-14
申请号：US17569722
申请日：2022-01-06
Applicant: Tula Technology, Inc.
Inventor： Robert C. WANG , Louis J. SERRANO , Shikui Kevin CHEN
Abstract: A method of operating an engine is provided. An exhaust valve actuation fault is detected for a first exhaust valve associated with a first cylinder during a first working cycle. In response to the detection of the exhaust valve actuation fault, fueling to at least the first cylinder is cut off. Actuation of the first exhaust valve is attempted in second working cycles that follow the first working cycle, wherein the second working cycles are not fueled. Whether or not the first exhaust valve actuated properly during the second working cycles is determined. Operation of the first cylinder is resumed when it is determined that the first exhaust valve actuated properly. Operation of the first cylinder is not resumed when it is determined that the first exhaust valve did not actuate properly.
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公开(公告)号：US20220205398A1
公开(公告)日：2022-06-30
申请号：US17137955
申请日：2020-12-30
Applicant: Tula Technology, Inc.
Inventor： Shikui Kevin CHEN , Aditya MANDAL , Louis J. SERRANO , Xiaoping CAI
Abstract: A system and method for the use of machine learning for detecting faults for cylinder intake and/or exhaust valves that do not properly open or close as commanded and for generating a flag for such faults.
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