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    Engine Braking
    2.
    发明申请
    Engine Braking 审中-公开
    发动机制动

    公开(公告)号：US20160123242A1

    公开(公告)日：2016-05-05

    申请号：US14893553

    申请日：2013-05-29

    申请人： INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC

    发明人： Bruce Winfield Hamilton

    IPC分类号： F02D13/04 ,  F02D41/34

    CPC分类号： F02D13/04 ,  F02D41/12 ,  F02D41/345 ,  F02D2400/02 ,  F02D2400/04 ,  Y02T10/44

    摘要： A method for enhancing engine brake horsepower. The method includes generating an engine brake horsepower by compressing air in a cylinder of an engine. Additionally, fuel is injected into the compressed air in the cylinder. The injected fuel is combusted in the compressed air in the cylinder prior to the piston reaching the top dead center position in the at least one cylinder. The compressed combustion products are also released before the piston passes the top dead center position. The combustion of the fuel during the engine braking event allows the engine braking to be a throttable event. Further, the quantity of fuel introduced into the cylinder for combustion may be adjusted so that the engine braking horsepower remains relatively consistent despite changes in engine speed.

    摘要翻译： 一种提高发动机制动马力的方法。 该方法包括通过压缩发动机气缸中的空气来产生发动机制动马力。 此外，燃料被喷射到气缸中的压缩空气中。 在活塞到达至少一个气缸中的上止点位置之前，喷射的燃料在气缸中的压缩空气中燃烧。 在活塞通过上止点位置之前，压缩的燃烧产物也被释放。 在发动机制动事件期间燃料的燃烧允许发动机制动是可节流的事件。 此外，可以调节引入到燃烧用气缸中的燃料量，使得即使发动机转速发生变化，发动机制动马力也保持相对一致。

    System and methods for improving efficiency in internal combustion engines
    7.
    发明授权
    System and methods for improving efficiency in internal combustion engines 有权
    提高内燃机效率的系统和方法

    公开(公告)号：US08402942B2

    公开(公告)日：2013-03-26

    申请号：US12501392

    申请日：2009-07-10

    申请人： Adya S. Tripathi ,  Chester J. Silvestri

    发明人： Adya S. Tripathi ,  Chester J. Silvestri

    IPC分类号： F02D43/00 ,  F02D17/00 ,  F02D45/00 ,  G06F19/00

    CPC分类号： F02D41/1401 ,  F02D37/02 ,  F02D41/0087 ,  F02D41/266 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2400/02 ,  F02P5/1512 ,  Y02T10/46

    摘要： The present invention relates to system and methods for improving efficiency of an internal combustion engine. This system may include a fuel processor. The system receives instructions for a desired engine output and operating conditions. The system may then determine an operational state corresponding to the desired output. The operational state includes designating the cylinders into one of three categories: working, deactivated and passive. The number of working cylinders is calculated by dividing the desired output by the power provided by one cylinder operating at substantially optimal efficiency. Then the system substantially disables fuel flow to and air flow to the deactivated cylinders, substantially disables fuel flow to and firing of the passive cylinders, and substantially regulates fuel flow to, air flow to and firing of the working cylinders. Firing of the working cylinders is synchronized with engine speed to reduce unwanted engine vibrations. The number of working, passive and deactivated cylinders may be continually altered in response to changes in desired output or operating conditions.

    摘要翻译： 本发明涉及提高内燃机效率的系统和方法。 该系统可以包括燃料处理器。 系统接收到所需发动机输出和操作条件的指令。 系统然后可以确定对应于期望输出的操作状态。 操作状态包括将气瓶指定为三种类型之一：工作，停用和被动。 通过将期望的输出除以由基本上最佳效率操作的一个气缸提供的功率来计算工作气缸的数量。 然后，该系统基本上禁止燃料流动并且空气流向失活的气缸，基本上禁止燃料流向无源气缸的燃烧和点燃，并且基本上调节燃料流向工作气缸的空气流动和燃烧。 工作气缸的点火与发动机转速同步，以减少不必要的发动机振动。 工作，被动和停用的气缸的数量可以响应于期望输出或操作条件的变化而不断地改变。

    Internal combustion engine control for improved fuel efficiency
    10.
    发明授权
    Internal combustion engine control for improved fuel efficiency 有权
    内燃机控制提高燃油效率

    公开(公告)号：US07886715B2

    公开(公告)日：2011-02-15

    申请号：US12615179

    申请日：2009-11-09

    申请人： Adya S. Tripathi ,  Chester J. Silvestri

    发明人： Adya S. Tripathi ,  Chester J. Silvestri

    IPC分类号： F02P5/00 ,  F02M7/00 ,  F02D43/00

    CPC分类号： F02D41/0087 ,  F02D37/02 ,  F02D41/1401 ,  F02D41/266 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2400/02 ,  F02P5/1512 ,  Y02T10/46

    摘要： A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. Feedback control is used to dynamically determine the working cycles to be skipped to provide a desired engine output. In some embodiments a substantially optimized amount of air and fuel is delivered to the working chambers during active working cycles so that the fired working chambers can operate at efficiencies close to their optimal efficiency. In some embodiments, the appropriate firing pattern is determined at least in part using predictive adaptive control. By way of example, sigma delta controllers work well for this purpose. In some implementations, the feedback includes feedback indicative of at least one of actual and requested working cycle firings. In some embodiments, the appropriate firings are determined on a firing opportunity by firing opportunity basis. Additionally, in some embodiments, an indicia of the current rotational speed of the engine is used as a clock input for a controller used to selectively cause the skipped working cycles to be skipped.

    摘要翻译： 描述了用于改善内燃机的燃料效率的各种方法和装置。 通常，发动机被控制为以跳火可变排量模式操作。 反馈控制用于动态地确定要跳过的工作循环以提供期望的发动机输出。 在一些实施例中，在主动工作循环期间将基本上优化的空气和燃料量输送到工作室，使得燃烧的工作室可以以接近其最佳效率的效率进行操作。 在一些实施例中，至少部分地使用预测自适应控制来确定适当的点火模式。 作为例子，西格玛三角洲控制器为此工作良好。 在一些实施方案中，反馈包括指示实际和所请求的工作循环点火中的至少一个的反馈。 在一些实施例中，通过击发机会的基础，通过击发机会确定适当的发射。 另外，在一些实施例中，将引擎的当前转速的标记用作用于选择性地使跳过的工作循环被跳过的控制器的时钟输入。