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公开(公告)号：US07228824B2
公开(公告)日：2007-06-12
申请号：US11266608
申请日：2005-11-03
申请人： Chris P. Glugla , David K. Trumpy , In Kwang Yoo
发明人： Chris P. Glugla , David K. Trumpy , In Kwang Yoo
IPC分类号： F02B75/04
CPC分类号： F02D41/107 , F02B75/04 , F02D15/02 , F02D2200/1012
摘要： A method for operating an internal combustion engine. The method includes: providing a functional relationship between time rate of change in engine speed, and compression ratio switching engine speed limit; determining time rate of change in engine speed; determining from the determined rate of change of engine speed and the function whether the engine speed exceeds the compression ratio switching engine speed; and commanding the engine to operate at a relatively low compression ratio if the determined time of change in engine speed exceeds the compression ratio switching engine speed limit and commanding the engine to operate at a relatively high compression ratio if the determined time of change in engine speed is less than the compression ratio switching engine speed limit.
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2.发明授权公开(公告)号：US06970781B1
公开(公告)日：2005-11-29
申请号：US10858800
申请日：2004-06-03
申请人： Yin Chen , Woong-chul Yang , William R. Dutcher , David K. Trumpy , In Kwang Yoo , Chris P. Glugla , Diana Brehob
发明人： Yin Chen , Woong-chul Yang , William R. Dutcher , David K. Trumpy , In Kwang Yoo , Chris P. Glugla , Diana Brehob
CPC分类号： F02D41/3076 , F02D13/0207 , F02D35/027 , Y02T10/18
摘要： A method and system for operating an internal combustion engine. The internal combustion engine is operable in a plurality of compression ratio operating modes. The method includes determining a relationship between a base engine threshold load where the high compression and low compression provide substantially the same engine fuel consumption and engine speed. The determined nominal relationship is modified by a factor, such factor being a function of a condition under which such engine is operating, to obtain a modified relationship. The modified relationship is a function of engine speed and the condition has an effect on knock generation in such engine. The modified relationship and engine speed are used in selecting one of the plurality of compression ratio operating modes for the engine. A hysteresis load as a function of engine speed is determined and applied to the determined hysteresis load to the modified relationship to inhibit switching oscillations between a pair of the plurality of compression ratio operating modes.
摘要翻译： 一种用于操作内燃机的方法和系统。 内燃机可以多个压缩比操作模式操作。 该方法包括确定高压缩和低压缩提供基本相同的发动机燃料消耗和发动机转速之间的基本发动机阈值负荷之间的关系。 所确定的标称关系由因子修改，这种因素是这种发动机运行的条件的函数，以获得修改的关系。 改进的关系是发动机转速的函数，该条件对这种发动机的爆震产生有影响。 改变的关系和发动机转速用于选择发动机的多个压缩比操作模式之一。 确定作为发动机转速的函数的滞后负载并将其应用于所确定的滞后负载至修改关系，以禁止一对多个压缩比操作模式之间的开关振荡。
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公开(公告)号：US4446825A
公开(公告)日：1984-05-08
申请号：US369060
申请日：1982-04-16
CPC分类号： F01L1/462
摘要： An apparatus for controlling and varying the closing force of intake or exhaust valves for an internal combustion engine. Hydraulic system, responsive to a minimum high speed condition of the engine, is used to increase the spring rate of the valve closing springs. The hydraulic system also reduces the spring rate when the engine falls below such speed condition. A spring biased idler pulley is also used to maintain adequate tension on a belt, providing drive to the camshaft for the valves. Adjustment apparatus is associated with the spring biased idler pulley for controllably increasing the spring rate for biasing when the engine speed is above a minimum condition and for decreasing the spring rate when the engine speed is below the minimum condition.
摘要翻译： 一种用于控制和改变用于内燃机的进气门或排气门的关闭力的装置。 用于响应于发动机的最小高速状态的液压系统用于提高关闭弹簧的弹簧刚度。 当发动机低于这种速度条件时，液压系统还可以降低弹簧刚度。 弹簧偏置的惰轮也用于在带上保持足够的张力，为阀的凸轮轴提供驱动。 调节装置与弹簧偏置的惰轮相关联，用于当发动机转速高于最小状态时可控地增加用于偏置的弹簧刚度，并且当发动机转速低于最小条件时降低弹簧刚度。
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公开(公告)号：US5612667A
公开(公告)日：1997-03-18
申请号：US498381
申请日：1995-07-05
申请人： David K. Trumpy , Marvin P. Kraska
发明人： David K. Trumpy , Marvin P. Kraska
IPC分类号： B60Q1/52 , B60R16/02 , B60R16/023 , B60Q9/00
CPC分类号： B60R16/0232 , B60Q1/52
摘要： In a vehicular warning system for sensing the approach of severe weather, a pressure sensor generates a first signal representative of the barometric pressure. A computer, coupled to the pressure sensor through the electrical system of the vehicle, generates a second signal responsive to the first signal changing in a time series pattern correlated with a known time series pattern representative of a severe weather system. The computer is coupled through the electrical system of the vehicle to the horn and/or lights for generating warning signals responsive to receiving the second signal, but only when the vehicle is not in the operating mode.
摘要翻译： 在用于感测恶劣天气的方法的车辆警告系统中，压力传感器产生代表大气压力的第一信号。 通过车辆的电气系统耦合到压力传感器的计算机产生响应于与表示恶劣天气系统的已知时间序列模式相关联的时间序列模式改变的第一信号的第二信号。 计算机通过车辆的电气系统耦合到喇叭和/或灯，用于响应于接收到第二信号而产生警告信号，但是仅当车辆不处于操作模式时。
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