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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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公开(公告)号：US20110251773A1
公开(公告)日：2011-10-13
申请号：US13004839
申请日：2011-01-11
IPC分类号： F02D28/00
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. In some aspects, methods and arrangements are described for operating an engine in a throttled skip fire mode. In other aspects, methods and arrangements are described for controlling the operational state of a variable displacement 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。 在一些方面，描述了用于在节流跳火模式下操作发动机的方法和布置。 在其他方面，描述了用于控制可变排量发动机的操作状态的方法和装置。
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公开(公告)号：US08616181B2
公开(公告)日：2013-12-31
申请号：US13004839
申请日：2011-01-11
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. In some aspects, methods and arrangements are described for operating an engine in a throttled skip fire mode. In other aspects, methods and arrangements are described for controlling the operational state of a variable displacement 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。 在一些方面，描述了用于在节流跳火模式下操作发动机的方法和布置。 在其他方面，描述了用于控制可变排量发动机的操作状态的方法和装置。
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公开(公告)号：US20110030657A1
公开(公告)日：2011-02-10
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
IPC分类号： F02D17/02
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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