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公开(公告)号：US5736633A
公开(公告)日：1998-04-07
申请号：US784882
申请日：1997-01-16
CPC分类号： G01M15/06
摘要： A method and system are provided for distinguishing a cylinder identification (CID) signal pulse from camshaft timing signal pulses in a variable cam timing (VCT) engine having multiple engine combustion events. The method includes generating multiple signal pulses including a signal pulse which identifies an engine cylinder and a signal pulse for each one of the multiple engine combustion events. The method also includes measuring a first time period between a first signal pulse and a second signal pulse, measuring a second time period between the second signal pulse and a third signal pulse, and determining that the third signal pulse is the cylinder identification signal pulse if a product of the second time period and a scaling factor fails to exceed the first time period. A specially designed VCT/CID signal generator, and an appropriately programmed microprocessor are provided for performing the method.
摘要翻译： 提供了一种用于在具有多个发动机燃烧事件的可变凸轮定时（VCT）发动机中区分气缸识别（CID）信号脉冲和凸轮轴定时信号脉冲的方法和系统。 该方法包括产生多个信号脉冲，包括识别发动机气缸的信号脉冲和用于多个发动机燃烧事件中的每一个的信号脉冲。 该方法还包括测量第一信号脉冲和第二信号脉冲之间的第一时间段，测量第二信号脉冲和第三信号脉冲之间的第二时间周期，并且确定第三信号脉冲是气缸识别信号脉冲，如果 第二时间段的乘积和缩放因子不能超过第一时间段。 提供专门设计的VCT / CID信号发生器和适当编程的微处理器来执行该方法。
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公开(公告)号：US5767394A
公开(公告)日：1998-06-16
申请号：US797378
申请日：1997-02-07
CPC分类号： F02D41/009 , G01M15/046 , F02D2200/1015
摘要： An early cylinder identification method and system using pulsewidth encoding are provided for use in a variable camshaft timing equipped engine. The method includes generating multiple signal pulses, each signal pulse having a unique length and being associated with one of the engine cylinders. The method also includes measuring the length of a signal pulse, and identifying the engine cylinder associated with the signal pulse based on the measured length of the signal pulse. A system includes a specially designed sensor wheel and control logic for performing the method.
摘要翻译： 提供了一种使用脉冲宽度编码的早期气缸识别方法和系统，用于可变凸轮轴配备时间的发动机。 该方法包括产生多个信号脉冲，每个信号脉冲具有唯一的长度并且与发动机气缸中的一个相关联。 该方法还包括测量信号脉冲的长度，并且基于所测量的信号脉冲的长度来识别与信号脉冲相关联的发动机气缸。 系统包括专门设计的传感器轮和用于执行该方法的控制逻辑。
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公开(公告)号：US07660660B2
公开(公告)日：2010-02-09
申请号：US11673450
申请日：2007-02-09
CPC分类号： F01P7/167 , F01P2037/00
摘要： A method for controlling an engine output with at least two actuators, including applying inputs to actuators which regulate a variable of an engine, evaluating the response of the system, determining the ability of the actuators to change the engine variable, determining the capability of the actuators to reject a disturbance, calculating an optimum actuator feedforward control function based upon the ability and capability determined and controlling the actuators using the calculated function and a feedforward control algorithm.
摘要翻译： 一种用于利用至少两个致动器控制发动机输出的方法，包括向调节发动机变量的致动器施加输入，评估系统的响应，确定致动器改变发动机变量的能力，确定 执行器以排除干扰，基于使用所计算的功能和前馈控制算法确定并控制致动器的能力和能力来计算最佳致动器前馈控制功能。
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公开(公告)号：US5755202A
公开(公告)日：1998-05-26
申请号：US738197
申请日：1996-10-25
CPC分类号： F02D13/0219 , F01L1/34 , F02D41/0002 , F01L2201/00 , F02D2041/001 , Y02T10/18 , Y02T10/42
摘要： A method of reducing feed gas emissions and improving fuel economy in an internal combustion engine uses a variable cam timing mechanism and an electronically controlled throttle. The method includes: a) predetermining ranges of negligible torque demand, small torque demand, moderate torque demand, high torque demand and maximum torque demand; b) determining actual torque demand; c) using conventional cam phasing and pedal-to-throttle relationship if actual torque demand corresponds with the negligible torque demand range; d) using cam phasing of magnitude in transition between conventional and fully retarded cam phasing and retaining conventional pedal-to-throttle relationship if actual torque demand corresponds with the small torque demand range; e) using fully retarded cam phasing and electronically adjusting throttle position to meet actual torque demand if actual torque demand corresponds with the moderate torque demand range; f) using cam phasing of magnitude in transition between fully retarded and conventional cam phasing and holding throttle position constant if actual torque corresponds with the high torque demand range; and g) using conventional cam phasing and pedal-to-throttle relationship if actual torque corresponds with the maximum torque demand range. Similar schemes are provided for intake advance and exhaust retard strategies.
摘要翻译： 一种在内燃机中减少进料气体排放并提高燃油经济性的方法使用可变凸轮正时机构和电子控制油门。 该方法包括：a）预先确定扭矩需求可忽略的范围，小扭矩需求，中等转矩需求，高扭矩需求和最大扭矩需求; b）确定实际的扭矩需求; c）如果实际扭矩需求对应于可忽略的扭矩需求范围，则使用传统的凸轮定相和踏板与油门的关系; d）如果实际的扭矩需求对应于小的扭矩需求范围，则使用常规和完全延迟的凸轮定相之间的过渡中的凸轮定相并保持传统的踏板与油门的关系; e）如果实际扭矩需求对应于中等扭矩需求范围，则使用完全延迟的凸轮相位和电子调节节气门位置以满足实际的扭矩需求; f）如果实际扭矩对应于高扭矩需求范围，则使用在完全延迟和常规凸轮相位之间的过渡中的凸轮定相，并且保持节气门位置恒定; 并且g）如果实际扭矩对应于最大扭矩需求范围，则使用传统的凸轮定相和踏板与油门的关系。 为进气提前和排气策略提供了类似的方案。
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公开(公告)号：US20080190384A1
公开(公告)日：2008-08-14
申请号：US11673450
申请日：2007-02-09
CPC分类号： F01P7/167 , F01P2037/00
摘要： A method for controlling an engine output with at least two actuators, including applying inputs to actuators which regulate a variable of an engine, evaluating the response of the system, determining the ability of the actuators to change the engine variable, determining the capability of the actuators to reject a disturbance, calculating an optimum actuator feedforward control function based upon the ability and capability determined and controlling the actuators using the calculated function and a feedforward control algorithm.
摘要翻译： 一种用于利用至少两个致动器控制发动机输出的方法，包括向调节发动机变量的致动器施加输入，评估系统的响应，确定致动器改变发动机变量的能力，确定 执行器以排除干扰，基于使用所计算的功能和前馈控制算法确定并控制致动器的能力和能力来计算最佳致动器前馈控制功能。
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