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    Engine braking controller
    13.
    发明授权
    Engine braking controller 有权
    发动机制动控制器

    公开(公告)号：US09328672B2

    公开(公告)日：2016-05-03

    申请号：US13953615

    申请日：2013-07-29

    Applicant: Tula Technology, Inc.

    Inventor： Louis J. Serrano ,  Steven E. Carlson ,  Joshua P. Switkes ,  Ronald D. Yuille

    IPC: F02D13/04 ,  F02D41/00 ,  F02D17/02 ,  F02D41/12 ,  F02D13/02

    CPC classification number: F02D17/02 ,  F02D13/0203 ,  F02D13/04 ,  F02D41/0005 ,  F02D41/0087 ,  F02D41/123

    Abstract: In one aspect of the invention, an engine is operated in a skip cylinder engine braking mode. In the skip cylinder engine braking mode, selected working cycles of selected working chambers are deactivated. Other selected working cycles of the selected working chambers are operated in a braking mode. Accordingly, individual working chambers are sometimes deactivated and sometimes operated in the braking mode while the engine is operating in the skip cylinder engine braking mode. Various methods for cylinder control are described, which improve fuel economy, catalytic converter performance, and vehicle NVH characteristics.

    Abstract translation: 在本发明的一个方面，发动机以跳过气缸发动机制动模式操作。 在跳过气缸发动机制动模式下，所选择的工作室的选定工作循环被停用。 所选择的工作室的其他选定的工作循环在制动模式下操作。 因此，当发动机以跳过气缸发动机制动模式运行时，单个工作室有时被停用并且有时在制动模式下操作。 描述了用于气缸控制的各种方法，其提高燃料经济性，催化转化器性能和车辆NVH特性。

    Hybrid vehicle with cylinder deactivation
    14.
    发明授权
    Hybrid vehicle with cylinder deactivation 有权
    混合动力汽车停用汽缸

    公开(公告)号：US08892330B2

    公开(公告)日：2014-11-18

    申请号：US13654217

    申请日：2012-10-17

    Applicant: Tula Technology, Inc.

    Inventor： Ronald D. Yuille ,  Mark A. Shost ,  Louis J. Serrano ,  John W. Parsels ,  Matthew A. Younkins

    IPC: G06F17/00 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60K6/485

    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。

    Managing engine firing fraction changes during gear shifts
    15.
    发明授权
    Managing engine firing fraction changes during gear shifts 有权

    公开(公告)号：US11685380B1

    公开(公告)日：2023-06-27

    申请号：US17576160

    申请日：2022-01-14

    Applicant: Tula Technology, Inc.

    Inventor： Louis J. Serrano ,  Xiaoping Cai ,  Andrew W. Phillips

    IPC: B60W30/19 ,  F02D41/02 ,  F02D41/00 ,  B60W10/06 ,  B60W10/11

    CPC classification number: B60W30/19 ,  B60W10/06 ,  B60W10/11 ,  F02D41/0087 ,  F02D41/0225 ,  F02D2200/101 ,  F02D2200/501

    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.

    Multi-level firing engine control
    20.
    发明授权
    Multi-level firing engine control 有权

    公开(公告)号：US10557427B2

    公开(公告)日：2020-02-11

    申请号：US16035614

    申请日：2018-07-14

    Applicant: Tula Technology, Inc.

    Inventor： Matthew A. Younkins ,  Louis J. Serrano

    IPC: F02D41/04 ,  F02D13/06 ,  F02D13/02 ,  F02D17/02 ,  F02D41/00 ,  F02D41/10 ,  F02D41/12 ,  F02P5/145 ,  F01L1/047 ,  F02D41/26 ,  F02P5/15 ,  F02D11/02

    Abstract: In various aspects, internal combustion engines, engine controllers and methods of controlling engines are described. The engine includes a camshaft and a two cylinder sets. Cylinders in the first are deactivatable and cylinders in the second set may be fired at high or low output levels. The air charge for each fired working cycle is set based on whether a high or low torque output is selected. In some implementations, the camshaft is axially shiftable between first and second positions. First cam lobes are configured to cause their associated cylinders to intake a large air charge during intake strokes that occur when the camshaft is in the first position. Second cam lobes for cylinders in the second set cause their associated cylinders to intake a smaller air charge when the camshaft is in the second position. Second cam lobes for cylinders in the first set deactivate their associated cylinders.

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