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公开(公告)号：US08131445B2
公开(公告)日：2012-03-06
申请号：US13101034
申请日：2011-05-04
CPC分类号： 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
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. Predictive Adaptive control is used to dynamically determine the working cycles to be skipped to provide a desired engine output.
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。 预测自适应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。
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公开(公告)号：US07954474B2
公开(公告)日：2011-06-07
申请号：US12615171
申请日：2009-11-09
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.
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3.发明申请公开(公告)号：US20110048372A1
公开(公告)日：2011-03-03
申请号：US12833869
申请日：2010-07-09
CPC分类号： F02D41/1401 , F02D37/02 , F02D41/0087 , F02D41/021 , F02D41/266 , F02D2041/0012 , F02D2200/602 , F02D2250/18 , F02D2400/02 , F02D2400/11 , F02P5/1512 , Y02T10/46
摘要： The present invention relates to a diesel engine control system and methods for substantially operating a diesel engine at stoichiometric fuel to air ratios. The system may include a fuel processor which receives instructions for a desired engine output and current operating conditions. The fuel processor may also generate fueling instructions for the cylinders, including: substantially regulating fuel delivery into to a first group of cylinders at or near stoichiometric fuel levels, and substantially disabling fuel injection into to a second grouping of cylinders. The number of cylinders being fueled, and therefore undergoing a combustion event corresponds to the desired engine output. This may be calculated by dividing the desired output by the power provided by one cylinder operating at substantially stoichiometric fuel levels. The number of cylinders receiving fuel may be varied over a succession of engine revolutions such that the actual average engine power output conforms to the desired output.
摘要翻译： 本发明涉及柴油机控制系统和用于基本上以化学计量的燃料与空气比操作柴油发动机的方法。 该系统可以包括燃料处理器，其接收期望的发动机输出和当前操作条件的指令。 燃料处理器还可以产生用于气缸的加油指令，包括：基本上调节燃料输送到处于或接近化学计量燃料水平的第一组气缸，并基本上禁用燃料喷射到第二组气缸中。 正在燃料并因此经历燃烧事件的气缸的数量对应于期望的发动机输出。 这可以通过将期望的输出除以由基本上化学计量的燃料水平操作的一个气缸提供的功率来计算。 接收燃料的气缸的数量可以在一系列发动机转数上变化，使得实际的平均发动机功率输出符合期望的输出。
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公开(公告)号：US08402942B2
公开(公告)日：2013-03-26
申请号：US12501392
申请日：2009-07-10
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。
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公开(公告)号：US08131447B2
公开(公告)日：2012-03-06
申请号：US12355725
申请日：2009-01-16
CPC分类号： F02D41/266 , F02D41/0087 , F02D41/047 , F02D41/068 , F02D41/123 , F02D41/1402 , F02D41/1454 , F02D41/1482 , F02D41/3058 , F02D41/365 , F02D2041/141 , F02D2250/18 , F02D2400/11 , F02P9/002 , Y02T10/142
摘要： A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, selected combustion events are skipped during operation of the internal combustion engine so that other working cycles can operate at a better thermodynamic efficiency. In one aspect of the invention, an engine is controlled to operate in a variable displacement mode. In the variable displacement mode, fuel is not delivered to the working chambers (e.g. cylinders) during selected “skipped” working cycles. During active (“non-skipped”) working cycles, a maximum (e.g., unthrottled) amount of air and an optimized amount of fuel is delivered to the relevant working chambers so that the fired working chambers can operate at efficiencies closer to their optimal efficiency. A controller is used to dynamically determine the chamber firings required to provide the engine torque based on the engine's current operational state and conditions. The chamber firings may be sequenced in real time or in near real time in a manner that helps reduce undesirable vibrations of the engine.
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，在内燃机操作期间跳过选定的燃烧事件，使得其他工作循环可以以更好的热力学效率工作。 在本发明的一个方面，发动机被控制为以可变排量模式操作。 在可变排量模式中，在选择的“跳过”工作循环期间，燃料不被输送到工作室（例如气缸）。 在主动（“非跳过”）工作循环期间，最大限度地（例如，无节流）的空气量和优化的燃料量被输送到相关的工作室，使得燃烧的工作室可以以更接近其最佳效率的效率 。 控制器用于动态地确定基于发动机的当前操作状态和条件来提供发动机扭矩所需的腔室点火。 室内燃烧可以以有助于减少发动机的不期望的振动的方式实时或接近实时地排序。
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公开(公告)号：US07886715B2
公开(公告)日：2011-02-15
申请号：US12615179
申请日：2009-11-09
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。
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7.发明授权公开(公告)号：US08646435B2
公开(公告)日：2014-02-11
申请号：US12833869
申请日：2010-07-09
CPC分类号： F02D41/1401 , F02D37/02 , F02D41/0087 , F02D41/021 , F02D41/266 , F02D2041/0012 , F02D2200/602 , F02D2250/18 , F02D2400/02 , F02D2400/11 , F02P5/1512 , Y02T10/46
摘要： The present invention relates to a diesel engine control system and methods for substantially operating a diesel engine at stoichiometric fuel to air ratios. The system may include a fuel processor which receives instructions for a desired engine output and current operating conditions. The fuel processor may also generate fueling instructions for the cylinders, including: substantially regulating fuel delivery into to a first group of cylinders at or near stoichiometric fuel levels, and substantially disabling fuel injection into to a second grouping of cylinders. The number of cylinders being fueled, and therefore undergoing a combustion event corresponds to the desired engine output. This may be calculated by dividing the desired output by the power provided by one cylinder operating at substantially stoichiometric fuel levels. The number of cylinders receiving fuel may be varied over a succession of engine revolutions such that the actual average engine power output conforms to the desired output.
摘要翻译： 本发明涉及柴油机控制系统和用于基本上以化学计量的燃料与空气比操作柴油发动机的方法。 该系统可以包括燃料处理器，其接收期望的发动机输出和当前操作条件的指令。 燃料处理器还可以产生用于气缸的加油指令，包括：基本上调节燃料输送到处于或接近化学计量燃料水平的第一组气缸，并基本上禁用燃料喷射到第二组气缸中。 正在燃料并因此经历燃烧事件的气缸数量对应于期望的发动机输出。 这可以通过将期望的输出除以由基本上化学计量的燃料水平操作的一个气缸提供的功率来计算。 接收燃料的气缸的数量可以在一系列发动机转数上变化，使得实际的平均发动机功率输出符合期望的输出。
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公开(公告)号：US08511281B2
公开(公告)日：2013-08-20
申请号：US12833916
申请日：2010-07-09
申请人： Adya S. Tripathi , Chester J. Silvestri , Christopher W. Chandler , Chris Hand , Joshua P. Switkes , Mark Wilcutts
发明人： Adya S. Tripathi , Chester J. Silvestri , Christopher W. Chandler , Chris Hand , Joshua P. Switkes , Mark Wilcutts
CPC分类号： F02D17/02 , F02D41/0087 , F02D41/047
摘要： 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 the variable displacement mode, selected combustion events are skipped so that other working cycles can operate at better thermodynamic efficiency. More specifically, selected “skipped” working cycles are not fired while other “active” working cycles are fired. Typically, fuel is not delivered to the working chambers during skipped working cycles. In one aspect of the invention, a firing pattern is determined that is not fixed but the active working cycles are selected to favor the firing of working chambers that have recently been fired at least in part to reduce wall wetting losses. In another aspect of the invention, when an active working cycle follows a skipped working cycle in the same working chamber, the quanta of fuel injected for delivery to the working chamber is increased relative to the quanta of fuel that would be delivered to the working chamber when the active working cycle follows another active working cycle in the same working chamber in order to compensate for wall wetting losses that occur during skipped working cycles.
摘要翻译： 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。 在可变位移模式中，跳过所选择的燃烧事件，使得其他工作循环可以以更好的热力学效率运行。 更具体地，在其他“活动”工作循环被触发时，选定的“跳过”工作循环不被触发。 通常，在跳过的工作循环期间，燃料不会传送到工作室。 在本发明的一个方面，确定了不固定的点火模式，但选择了主动工作循环以有利于最近已经至少部分地被烧制的工作室的点火以减少壁湿润损失。 在本发明的另一方面，当主动工作循环跟随在相同工作室中跳过的工作循环时，喷射用于输送到工作室的燃料量相对于将被输送到工作室的燃料量增加 当主动工作循环在相同的工作室中跟随另一个主动工作循环，以补偿在跳过的工作循环期间发生的壁湿润损失。
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9.发明申请System and Methods for Improved Efficiency Compression Ignition Internal Combustion Engine Control 审中-公开提高效率的系统和方法压缩点火内燃机控制公开(公告)号：US20120046853A1
公开(公告)日：2012-02-23
申请号：US13213061
申请日：2011-08-18
CPC分类号： F02D41/0087 , F02D37/02 , F02D41/1402 , F02D41/266 , F02D41/3011
摘要： The present invention relates to a compression ignition engine control system and methods for improving fuel efficiency. The system includes a fuel processor which receives instructions for a desired engine output and current operating conditions. The fuel processor generates fueling instructions for a plurality of cylinders. The fueling instructions include a low power skip fire mode of operation and a high power mode of operation. The instructions substantially regulate fuel delivery into to a first group of cylinders at or near optimal efficiency fuel levels during each of their respective working cycles. Likewise, the instructions may either substantially disable fuel injection into to a second grouping of cylinders or regulate fuel injection into to the second grouping of cylinders at an elevated high power fuel to air ratio. The fuel processor may include a synchronizer for synchronizing firing of the cylinders with the engine speed. Likewise, the fuel processor may include a sigma delta control circuit for generating a firing pattern that utilizes predictive adaptive control.
摘要翻译： 本发明涉及压燃式发动机控制系统和提高燃油效率的方法。 该系统包括燃料处理器，其接收期望的发动机输出和当前操作条件的指令。 燃料处理器为多个气缸产生加油指令。 加油指令包括低功率跳火操作模式和高功率操作模式。 这些说明书在其各自的工作循环中的每一个期间基本上调节燃料输送进入或接近最优效率燃料水平的第一组气缸。 类似地，指令可以基本上禁止燃料喷射到第二组气缸中，或者以升高的高功率燃料与空气比将燃料喷射调节到第二组气缸中。 燃料处理器可以包括用于使气缸的燃烧与发动机转速同步的同步器。 类似地，燃料处理器可以包括用于产生利用预测自适应控制的点火模式的Σ-Δ控制电路。
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公开(公告)号：US20120042633A1
公开(公告)日：2012-02-23
申请号：US13213069
申请日：2011-08-18
IPC分类号： F01N3/18
CPC分类号： F01N3/208 , F01N2610/03 , F02D17/02 , Y02T10/24
摘要： Systems and methods for skip fire spark ignition engine operation with a lean NOx trap after-treatment are provided. This system includes engine control circuitry capable of fueling and firing subsets of the engine's cylinders. Other cylinders are not provided fuel and are not fired (i.e. “skip fired”). The system includes an exhaust manifold for channeling the exhaust from at least some cylinders through a multistage catalytic converter. This may include a standard two-way or three-way catalytic converter. From the catalytic converter the exhaust may be channeled through a lean NOx trap. The lean NOx trap is able to chemically absorb the NOx emissions for regeneration according to a regeneration protocol. Lean NOx traps may include a substrate, an absorption material (also referred to as a ‘sorbent’) and a catalyst. The regeneration protocol may include monitoring NOx emissions downstream from the lean NOx trap, and comparing them against either a threshold or a lean NOx trap saturation model. Once the NOx emissions reach the threshold, or deviate from the model, a regeneration cycle may be performed.
摘要翻译： 提供了具有精益NOx捕集器后处理的跳火火花点火发动机操作的系统和方法。 该系统包括能够加油和发射发动机气缸的子集的发动机控制电路。 其他气缸不提供燃料，也不会燃烧（即“跳火”）。 该系统包括用于通过多级催化转化器引导来自至少一些气缸的排气的排气歧管。 这可以包括标准的双向或三向催化转化器。 从催化转化器排气可以通过贫NOx捕集器引导。 贫NOx捕集器能够根据再生方案化学吸收NOx排放物进行再生。 精益NOx捕集器可以包括基底，吸收材料（也称为“吸附剂”）和催化剂。 再生方案可以包括监测来自贫NOx捕集器下游的NOx排放，并将其与阈值或贫NOx捕集阱饱和模型进行比较。 一旦NOx排放达到阈值，或偏离模型，则可以执行再生循环。
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