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1. 发明授权

US06748910B2 Method of bounding cam phase adjustment in an internal combustion engine 有权
标题翻译：在内燃机中限制凸轮相位调节的方法
公开(公告)号：US06748910B2
公开(公告)日：2004-06-15
申请号：US10283756
申请日：2002-10-30
申请人： Martin Müller , Edward George Himes , Jeffrey M. Pfeiffer
发明人： Martin Müller , Edward George Himes , Jeffrey M. Pfeiffer
IPC分类号： F01L134
CPC分类号： F02D13/0219 , F02D13/0261 , F02D41/0002 , F02D41/006 , F02D2041/001 , F02D2200/0411 , Y02T10/18 , Y02T10/42
摘要： A cam phase control method for an internal combustion engine schedules cam phase to optimize emissions and fuel economy, but bounds the scheduled cam phase for continuous achievement of the desired inlet airflow. The volumetric efficiency required to achieve the desired inlet airflow at a specified intake manifold vacuum is compared to the maximum achievable volumetric efficiency at the specified vacuum. When the required volumetric efficiency is less than the maximum value, the cam phase is controlled according to the lesser of the scheduled cam phase and the highest cam phase for achieving the required volumetric efficiency; when the required volumetric efficiency is equal to or greater than the maximum value, the cam phase is controlled to a setting that maximizes the volumetric efficiency.
摘要翻译：用于内燃机的凸轮相位控制方法调度凸轮相位以优化排放和燃料经济性，但限制预定的凸轮相以连续实现期望的入口气流。将在特定进气歧管真空下实现所需入口气流所需的体积效率与在特定真空下达到的最大容积效率进行比较。当所需的体积效率小于最大值时，根据预定的凸轮相位和最高凸轮相位中较小的凸轮相位来控制凸轮相位，以实现所需的体积效率; 当所需的体积效率等于或大于最大值时，凸轮相位被控制为最大化容积效率的设定。

2. 发明授权

US06550451B1 Method of estimating residual exhaust gas concentration in a variable cam phase engine 失效
标题翻译：估计可变凸轮相位发动机中残余排气浓度的方法
公开(公告)号：US06550451B1
公开(公告)日：2003-04-22
申请号：US10162375
申请日：2002-06-04
申请人： Martin Müller , Jeffrey M. Pfeiffer
发明人： Martin Müller , Jeffrey M. Pfeiffer
IPC分类号： F02P500
CPC分类号： F02D41/0062 , F02D2041/001 , F02D2041/1433 , F02D2041/1437 , F02D2200/0411 , Y02T10/47
摘要： A method of estimating the concentration of residual exhaust gas in an internal combustion engine having variable cam phase control is based on engine dynamometer and engine simulator data. Since both the volumetric efficiency and the residual exhaust gas concentration of an engine vary monotonically in response to changes in cam phase, the simulated residual concentration data is deemed to be reliable if the simulated volumetric efficiency data matches volumetric efficiency data determined by engine dynamometer testing. Volumetric efficiency test data is compared to simulated volumetric efficiency data, and the simulation software is tuned until the simulated data matches the test data. At such point, the simulated residual concentration data is deemed to be reliable, and is used to calibrate a model relating residual concentration to cam phase angle, and such model is then used by an engine controller to estimate residual exhaust gas concentration during operation of the engine.
摘要翻译：在具有可变凸轮相位控制的内燃机中估计残余排气浓度的方法基于发动机测功机和发动机模拟器数据。由于发动机的体积效率和残余废气浓度都是随着凸轮相位的变化而单调变化的，如果模拟的容积效率数据与发动机测功机测试确定的体积效率数据相匹配，则认为模拟残留浓度数据是可靠的。将容积效率测试数据与模拟容积效率数据进行比较，并调整仿真软件，直到模拟数据与测试数据匹配。在这种情况下，模拟残留浓度数据被认为是可靠的，并且用于校准与残余浓度相关的凸轮相位角度的模型，然后由发动机控制器使用该模型来估计操作期间的残余排气浓度发动机。

3. 发明授权

US08650011B2 Method for determining an engine response characteristic 有权
标题翻译：确定发动机响应特性的方法
公开(公告)号：US08650011B2
公开(公告)日：2014-02-11
申请号：US12971407
申请日：2010-12-17
申请人： Martin Müller , Jeffrey M. Pfeiffer
发明人： Martin Müller , Jeffrey M. Pfeiffer
IPC分类号： G06F7/60 , G06F17/10
CPC分类号： G06F17/175 , F02D41/2432 , F02D41/2477 , F02D2041/001 , F02D2200/0411 , G05B17/02
摘要： A method for determining an estimate of a response characteristic that depends on a number of input factors includes developing a mathematical model of the response as a function of the input factors based on a statistical fit of a plurality of measured data points. The method also includes mapping the value of the response characteristic and the input factors at a plurality of conditions. The method combines the mapped data with the mathematical model to produce an estimate of the response characteristic that is more accurate over a range of conditions than either the mapped data or the model taken individually.
摘要翻译：用于确定取决于多个输入因子的响应特性的估计的方法包括基于多个测量数据点的统计拟合来开发作为输入因子的函数的响应的数学模型。该方法还包括在多个条件下映射响应特性的值和输入因子。该方法将映射数据与数学模型相结合，以产生响应特征的估计，该响应特性在条件范围内比单独采用的映射数据或模型更准确。

4. 发明授权

US08145404B2 Method for synchronizing an oil control valve as a virtual check valve 有权
标题翻译：油控阀作为虚拟止回阀同步的方法
公开(公告)号：US08145404B2
公开(公告)日：2012-03-27
申请号：US12228715
申请日：2008-08-15
申请人： Daniel G. Gauthier , Jeffrey M. Pfeiffer
发明人： Daniel G. Gauthier , Jeffrey M. Pfeiffer
IPC分类号： G06F19/00 , F01M1/18 , F01M11/10
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。

5. 发明授权

US06732691B1 Engine phaser control system using phaser instability measurement 有权
标题翻译：引擎移相器控制系统采用移相器不稳定性测量
公开(公告)号：US06732691B1
公开(公告)日：2004-05-11
申请号：US10455677
申请日：2003-06-05
申请人： Jongmin Lee , Timothy M. Nieves , Jeffrey M. Pfeiffer , Amanpal S. Grewal
发明人： Jongmin Lee , Timothy M. Nieves , Jeffrey M. Pfeiffer , Amanpal S. Grewal
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。

6. 发明授权

US07350487B1 Method for reducing phaser rotational instability in an internal combustion engine 有权
标题翻译：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。

7. 发明授权

US06758179B1 Method and apparatus for controlling a variable valve system for an internal combustion engine 有权
标题翻译：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
申请人： Daniel Lee McKay , Jeffrey M. Pfeiffer , Amanpal S. Grewal
发明人： Daniel Lee McKay , Jeffrey M. Pfeiffer , Amanpal S. Grewal
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。

8. 发明授权

US07571047B2 Detection of valve deactivation failure by monitoring exhaust temperature 有权
标题翻译：通过监测排气温度检测阀门失效故障
公开(公告)号：US07571047B2
公开(公告)日：2009-08-04
申请号：US11888744
申请日：2007-08-02
申请人： Jeffrey M. Pfeiffer , Jon C. Darrow
发明人： Jeffrey M. Pfeiffer , Jon C. Darrow
IPC分类号： G06F19/00 , F01L1/34 , G06F11/30 , G01M13/02
CPC分类号： G01M15/102 , F01N11/002
摘要： An internal combustion engine having valve deactivation capability for at least one cylinder, or for an entire bank of cylinders in a multiple-bank engine, is provided with a temperature probe in the exhaust stream of that cylinder or cylinder bank. The temperature probe is connected to an Engine Control Module programmed to determine the rate of temperature change during valve deactivation, to compare the determined value to an acceptable range of rates, and to signal, when the rate exceeds an acceptable range. When the valves of a cylinder are properly deactivated, the temperature in the exhaust pipe decreases slowly. However, when valve deactivation fails, the cylinders pump non-combusted air from the intake manifold into the exhaust manifold, resulting in a relatively rapid decrease in exhaust temperature. This abnormal rate of temperature decrease thus can be used as an indicator of failure of the VVA system.
摘要翻译：具有用于至少一个气缸或多排发动机中的整个气缸的阀停用能力的内燃机在该气缸或气缸组的排气流中设置有温度探头。温度探头连接到发动机控制模块，发动机控制模块被编程以确定阀停用期间温度变化的速率，将确定的值与可接受的速率范围进行比较，以及当速率超过可接受的范围时发出信号。当气缸的阀门正确停用时，排气管中的温度会缓慢下降。然而，当阀门失效时，气缸将进气歧管中的未燃烧的空气泵入排气歧管，导致排气温度相对快速的下降。这种异常的温度降低率可以用作VVA系统故障的指标。

9. 发明授权

US06393903B1 Volumetric efficiency compensation for dual independent continuously variable cam phasing 有权
公开(公告)号：US06393903B1
公开(公告)日：2002-05-28
申请号：US09732656
申请日：2000-11-30
申请人： Dennis C. Reed , Peter James Maloney , Jeffrey M. Pfeiffer
发明人： Dennis C. Reed , Peter James Maloney , Jeffrey M. Pfeiffer
IPC分类号： G01M1500
CPC分类号： F02D13/0219 , F01L1/34 , F01L9/02 , F01L9/04 , F01L2800/00 , F02D41/0002 , F02D41/1401 , F02D41/18 , F02D41/2422 , F02D41/2451 , F02D41/2464 , F02D2041/001 , F02D2200/0402 , F02D2200/0411 , F02M13/02 , Y02T10/18 , Y02T10/42
摘要： A method of estimating the volumetric efficiency of an internal combustion engine having independent intake and exhaust cam phase variation, compensates a nominal or base estimate of the volumetric efficiency in two successive stages: an intake stage, and an exhaust stage. The intake stage compensates for the effects of intake cam variation, using the base volumetric efficiency estimate as a starting point; and the exhaust stage compensates for the effects of exhaust cam variation, using the output of the intake stage as a starting point. The volumetric efficiency so compensated is then used to accurately compute the mass intake airflow for engine control purposes.

10. 发明申请

US20100042306A1 Method for synchronizing an oil control valve as a virtual check valve 有权
标题翻译：油控阀作为虚拟止回阀同步的方法
公开(公告)号：US20100042306A1
公开(公告)日：2010-02-18
申请号：US12228715
申请日：2008-08-15
申请人： Daniel G. Gauthier , Jeffrey M. Pfeiffer
发明人： Daniel G. Gauthier , Jeffrey M. Pfeiffer
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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