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公开(公告)号：US06732691B1
公开(公告)日：2004-05-11
申请号：US10455677
申请日：2003-06-05
IPC分类号： F01L134
CPC分类号： F01L1/34 , F01L2201/00 , F01L2800/00 , F01L2820/041
摘要： A camshaft phaser control system including a camshaft target wheel, the target wheel having first and second teeth for measuring camshaft oscillatory instability. The trailing edge of the first tooth coincides with the negative camshaft oscillation peak, and the trailing edge of the second tooth coincides with the positive camshaft oscillation peak. During each camshaft rotation, each tooth initiates an input signal to generate first and second input signals in known fashion. During crankshaft rotation, a third input signal is generated corresponding to the rotational position of the crankshaft. From these signals, operational camshaft oscillatory instability is computed by an engine monitoring system (EMS). Any deviation from the operational instability while the engine is operating is a direct measurement of oscillatory instability of the camshaft about its nominal holding position. A change in oscillatory instability is inferred as system malfunction, permitting defensive action to be taken by the EMS.
摘要翻译： 一种凸轮轴相位器控制系统，包括凸轮轴目标轮，所述目标轮具有用于测量凸轮轴振荡不稳定性的第一和第二齿。 第一齿的后缘与负凸轮轴振动峰值重合，第二齿的后缘与正凸轮轴振荡峰值重合。 在每个凸轮轴旋转期间，每个齿以已知的方式启动输入信号以产生第一和第二输入信号。 在曲轴旋转期间，对应于曲轴的旋转位置产生第三输入信号。 从这些信号，运行的凸轮轴振荡不稳定性由发动机监控系统（EMS）计算。 在发动机运转时与运行不稳定性的任何偏差是直接测量凸轮轴在其标称保持位置上的振荡不稳定性。 振荡不稳定性的变化被推定为系统故障，允许EMS采取防御性措施。
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2.发明授权Method and apparatus for cleaning an oil control valve for an internal combustion engine 有权用于清洁内燃机用油控制阀的方法和装置公开(公告)号：US06718921B2
公开(公告)日：2004-04-13
申请号：US10195614
申请日：2002-07-15
申请人： Amanpal S. Grewal , Daniel Lee McKay , Daniel George Gauthier , James Patrick Waters , Jeffrey M. Pfeiffer
发明人： Amanpal S. Grewal , Daniel Lee McKay , Daniel George Gauthier , James Patrick Waters , Jeffrey M. Pfeiffer
IPC分类号： F01L134
CPC分类号： F01L1/344 , F01L1/3442 , F01L2001/028 , F01L2001/34426 , F01L2001/3443 , F01L2001/34436 , F01L2001/34443
摘要： The present invention is a method and apparatus to clean an oil control valve for use by an internal combustion engine. The invention causes the oil control valve to execute a cleaning routine when specific entrance criteria are met. This ensures cleaning of the valve to remove contaminants that are wedged, pinched or otherwise trapped on the valve, without interference in the operation of the engine.
摘要翻译： 本发明是清洁内燃机使用的油控阀的方法和装置。 当符合特定入口标准时，本发明使得油控制阀执行清洁程序。 这样可确保清洁阀门，以除去楔入，夹紧或以其他方式捕获在阀门上的污染物，而不会干扰发动机的运行。
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3.发明授权Method and apparatus for controlling a variable valve system for an internal combustion engine 有权用于控制用于内燃机的可变阀系统的方法和装置公开(公告)号：US06758179B1
公开(公告)日：2004-07-06
申请号：US10375513
申请日：2003-02-26
IPC分类号： F01L134
CPC分类号： F01L1/3442 , F01L1/024 , F01L2001/0537 , F01L2001/34453 , F01L2105/00 , F01L2800/00
摘要： The present invention provides a method and apparatus to control the rate of change of the variable cam phasing system during transient engine operating conditions. It does this primarily to maintain combustion stability. The invention controls the rate of change of the variable cam phasing system based upon the operating point of the engine, the desired operating point of the engine, and the rate of change of the variable cam phasing system necessary to maintain combustion stability.
摘要翻译： 本发明提供了一种方法和装置，用于在瞬态发动机操作条件期间控制可变凸轮定相系统的变化率。 这主要是为了保持燃烧稳定性。 本发明基于发动机的工作点，发动机的期望工作点以及维持燃烧稳定性所需的可变凸轮定相系统的变化率来控制可变凸轮定相系统的变化率。
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公开(公告)号：US06915767B2
公开(公告)日：2005-07-12
申请号：US10668756
申请日：2003-09-23
IPC分类号： F01L1/34
CPC分类号： F01L1/34 , F01L2800/00 , F01L2800/01 , F01L2820/041 , Y10T74/2102
摘要： A method of determining the position of a cam phaser determines and stores an adaptively updated base offset corresponding to the phase offset of a camshaft relative to a crankshaft for a reference or default position of a cam phaser. Thereafter, the phaser position is determined relative to the base offset. Individual base offsets are preferably determined for each tooth of a toothed cam wheel, and stored in a non-volatile memory device. During engine operation, the base offsets are subject to diagnostic testing and adaptive updating, and the updated base offsets are stored in the non-volatile memory at engine shut-down.
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公开(公告)号：US06758177B1
公开(公告)日：2004-07-06
申请号：US10373000
申请日：2003-02-24
IPC分类号： F01L134
CPC分类号： F01L1/3442 , F01L1/024 , F01L2001/0537 , F01L2001/34469 , F01L2001/34479 , F01L2105/00 , F01L2800/00 , F01L2800/01
摘要： The present invention provides an improvement over conventional engine controls by providing a method and system that operates a variable valve system immediately subsequent to engine start, and disengages the variable valve system when engine performance is unacceptable. If the variable valve system is disengaged after engine start due to poor engine performance, a time delay occurs to allow the engine to create a sufficient amount of oil pressure to operate the variable valve system.
摘要翻译： 本发明通过提供在发动机启动之后立即操作可变阀系统的方法和系统来提供比常规发动机控制的改进，并且当发动机性能不可接受时，使可变气门系统脱离。 如果可变气门系统由于发动机性能不好而在发动机起动之后脱离，则发生时间延迟，以允许发动机产生足够的油压来操作可变气门系统。
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6.发明授权Method for reducing phaser rotational instability in an internal combustion engine 有权降低内燃机的相位旋转不稳定性的方法公开(公告)号：US07350487B1
公开(公告)日：2008-04-01
申请号：US11713908
申请日：2007-03-05
申请人： Jeffrey M. Pfeiffer , Jongmin Lee
发明人： Jeffrey M. Pfeiffer , Jongmin Lee
IPC分类号： F01L1/34
CPC分类号： F01L1/34 , F01L2800/11 , F01L2820/041 , F01L2820/042
摘要： A camshaft phaser control system for reducing rotor positional instability. A phaser system includes a target wheel mounted on the phaser rotor such that during camshaft rotation wheel teeth chop a signal to generate first and second interruption signals indicative of amplitude of rotor instability. An instability monitor is used to monitor the level of instability against predetermined acceptable levels, depending upon engine operating conditions (RPM, temperature). An excessive level of instability is established by engine calibration. When measured instability exceeds a predetermined threshold level for a predetermined period, an instability diagnostic becomes alarmed. A default strategy is used to correct the excessive instability by applying a bias to the phaser control duty cycle. The system continues to monitor the level of instability, and when instability falls below the threshold limit, normal phasing operation is resumed.
摘要翻译： 用于减小转子位置不稳定性的凸轮轴相位器控制系统。 相位器系统包括安装在移相器转子上的目标轮，使得在凸轮轴旋转轮齿切割信号以产生指示转子不稳定性幅度的第一和第二中断信号。 根据发动机工作条件（RPM，温度），使用不稳定性监视器来监视不稳定水平达到预定的可接受水平。 通过发动机校准建立了过高的不稳定性。 当测量不稳定性超过预定阈值水平达预定时间段时，不稳定性诊断变得震惊。 使用默认策略通过对相位器控制占空比施加偏差来纠正过度不稳定性。 系统继续监控不稳定的水平，当不稳定性低于阈值限制时，恢复正常的定相操作。
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公开(公告)号：US08145404B2
公开(公告)日：2012-03-27
申请号：US12228715
申请日：2008-08-15
CPC分类号： F01L1/344 , F01L1/34403 , F01L1/3442 , F01L2001/0478 , F01L2001/34426 , F01L2800/00 , F01L2800/09 , F01L2800/11
摘要： A standard cam phasing OCV may be employed as a virtual check valve to choke the backflow of oil during negative cam torque conditions, including execution of a duty cycle command in an event-based manner. Normally, OCV duty cycle commands are made on a time basis, but for VCV the duty cycle output change must be synchronized with engine events. A method is disclosed for calculating and delivering the VCV duty cycle so that both time-based and event-based controls are maintained and work together. Phase alignment of response time of the OCV solenoid is based upon cam target wheel edges and is event-based. An initial phase rate vs. phase angle is monitored by the Engine Control Module (ECM). Adjustment of the phase angle is provided to achieve maximum cam position phase rate.
摘要翻译： 可以使用标准的凸轮定相OCV作为虚拟止回阀，以在负凸轮转矩条件期间阻塞油的回流，包括以事件为基础的方式执行占空比命令。 通常，OCV占空比指令是基于时间进行的，但对于VCV，占空比输出变化必须与发动机事件同步。 公开了一种用于计算和传送VCV占空比的方法，以便基于时间和基于事件的控制被保持并一起工作。 OCV螺线管的响应时间的相位对准基于凸轮目标轮边缘，并且是基于事件的。 发动机控制模块（ECM）监控初始相位速率对相位角。 提供相位角的调整，以实现最大凸轮位置相位速率。
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公开(公告)号：US20100042306A1
公开(公告)日：2010-02-18
申请号：US12228715
申请日：2008-08-15
IPC分类号： F02D45/00
CPC分类号： F01L1/344 , F01L1/34403 , F01L1/3442 , F01L2001/0478 , F01L2001/34426 , F01L2800/00 , F01L2800/09 , F01L2800/11
摘要： A standard cam phasing OCV may be employed as a virtual check valve to choke the backflow of oil during negative cam torque conditions, including execution of a duty cycle command in an event-based manner. Normally, OCV duty cycle commands are made on a time basis, but for VCV the duty cycle output change must be synchronized with engine events. A method is disclosed for calculating and delivering the VCV duty cycle so that both time-based and event-based controls are maintained and work together. Phase alignment of response time of the OCV solenoid is based upon cam target wheel edges and is event-based. An initial phase rate vs. phase angle is monitored by the Engine Control Module (ECM). Adjustment of the phase angle is provided to achieve maximum cam position phase rate.
摘要翻译： 可以使用标准的凸轮定相OCV作为虚拟止回阀，以在负凸轮转矩条件期间阻塞油的回流，包括以事件为基础的方式执行占空比命令。 通常，OCV占空比指令是基于时间进行的，但对于VCV，占空比输出变化必须与发动机事件同步。 公开了一种用于计算和传送VCV占空比的方法，以便基于时间和基于事件的控制被保持并一起工作。 OCV螺线管的响应时间的相位对准基于凸轮目标轮边缘，并且是基于事件的。 发动机控制模块（ECM）监控初始相位速率对相位角。 提供相位角的调整，以实现最大凸轮位置相位速率。
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9.发明授权公开(公告)号：US06681172B2
公开(公告)日：2004-01-20
申请号：US10079965
申请日：2002-02-21
申请人： Jeffrey M. Pfeiffer , Joon-Ho Yoo
发明人： Jeffrey M. Pfeiffer , Joon-Ho Yoo
IPC分类号： G06G770
CPC分类号： F02D35/025 , F01M5/005 , F01M2011/1473 , F01P11/16 , F01P2023/00 , F01P2025/08 , F01P2025/13 , F01P2025/64
摘要： An improved method of estimating the oil temperature of an internal combustion engine models the net heat flow through the oil during operation of the engine based on known engine operating parameters and integrates the net heat flow to update the oil temperature estimate. The net heat flow components include heat added to the oil due to fuel combustion and heat rejected from the oil to the engine coolant and atmospheric air, and are based on heat transfer coefficients that are adjusted to take into account variations in engine speed, vehicle speed and cooling fan operation.
摘要翻译： 基于已知的发动机运行参数，一种改进的内燃机的油温估计方法来模拟在发动机运行期间通过油的净热流，并且将净热流积分以更新油温估计。 净热流分量包括由燃料燃烧引起的加入油中的热量和从油向发动机冷却剂和大气空气排出的热量，并且基于被调整以考虑发动机转速，车辆速度变化的传热系数 冷却风扇运行。
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10.发明授权Model-based method of estimating crankcase oil pressure in an internal combustion engine 有权估算内燃机曲轴箱油压的基于模型的方法公开(公告)号：US06561015B1
公开(公告)日：2003-05-13
申请号：US10126496
申请日：2002-04-19
申请人： Jeffrey M. Pfeiffer
发明人： Jeffrey M. Pfeiffer
IPC分类号： G01M1900
CPC分类号： G01L11/002 , G01M15/09
摘要： An improved method of estimating the oil pressure of an internal combustion engine utilizes a physical model that takes into account both engine speed and engine oil temperature. The oil pressure is estimated as the sum of static and dynamic components, where the dynamic component includes a first portion that primarily models flow-related effects, and a second portion that primarily models temperature-related effects. The constants and temperature-related variables of the physical model are combined to form one constant calibration value, and two temperature-dependent calibration values. The parameters of the physical model provide a starting point for the calibration values, and the calibration values are then tuned during a calibration procedure so that the estimated oil pressure tracks an accurate measure of the oil pressure during both steady-state and transient engine operating conditions.
摘要翻译： 一种改进的内燃机油压估计方法利用考虑发动机转速和发动机机油温度的物理模型。 油压估计为静态和动态分量的总和，其中动态分量包括主要模拟流量相关效应的第一部分，以及主要模拟温度相关效应的第二部分。 物理模型的常数和温度相关变量组合形成一个常数校准值和两个温度相关的校准值。 物理模型的参数提供了校准值的起始点，然后在校准过程中调整校准值，以便在稳态和瞬态发动机运行条件期间估计的油压跟踪油压的精确测量 。
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