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1. 发明授权

US4697561A On-line engine torque and torque fluctuation measurement for engine control utilizing crankshaft speed fluctuations 失效
标题翻译：使用曲轴速度波动的发动机控制的在线发动机扭矩和扭矩波动测量
公开(公告)号：US4697561A
公开(公告)日：1987-10-06
申请号：US723449
申请日：1985-04-15
申请人： Stephen J. Citron
发明人： Stephen J. Citron
IPC分类号： F02D45/00 , G01L5/00 , G01M15/04 , G01P3/44 , F02M3/07
CPC分类号： F02D41/16 , F02D41/0085 , F02D41/1498 , F02P5/1508 , F02P5/1512 , G01M15/046 , F02D2041/1432 , F02D2200/1004 , F02D2200/1012 , F02D2200/1015 , F02D37/02 , F02D41/0025 , Y02T10/46
摘要： Techniques are provided for determining on-line measures of both the average torque produced by an internal combustion engine, and the torque fluctuations (relative combustion efficiencies) of the cylinders of a multiple cylinder internal combustion engine. These techniques employ knowledge of crankshaft speed at the points of fastest and slowest crankshaft speed. Also, an engine-performance monitor is proposed for determining the above noted quantities on-line. The engine-performance monitor permits monitoring of engine performance to test control strategies for both engine fuel distribution systems and ignition systems. The techniques and engine-performance monitor can also be incorporated into a feedback system for controlling the performances of the various individual cylinders of a multiple cylinder internal combustion engine. Engine crankshaft speed is the basis for the calculations required. An on-line determination of engine torque can be incorporated into an engine control system or used for diagnostic purposes. One control system makes use of a measure of the cylinder-by-cylinder and combustion event-by-combustion event contributions to engine torque to optimize ignition or injection timing on a cylinder-by-cylinder basis.
摘要翻译：提供了用于确定由内燃机产生的平均扭矩的在线测量以及多缸内燃机的气缸的扭矩波动（相对燃烧效率）的技术。这些技术在最快和最慢的曲轴速度点使用曲轴速度知识。此外，提出了一种用于在线确定上述数量的发动机性能监视器。发动机性能监视器允许监控发动机性能，以测试发动机燃油分配系统和点火系统的控制策略。技术和发动机性能监视器也可以被并入到用于控制多缸内燃机的各个气缸的性能的反馈系统中。发动机曲轴速度是所需计算的基础。发动机扭矩的在线确定可以结合到发动机控制系统中或用于诊断目的。一个控制系统利用逐缸和燃烧事件燃烧事件对发动机扭矩的贡献的量度，以逐缸为基础优化点火或喷射正时。

2. 发明授权

US5699252A Error correction in measures of speed, acceleration, misfire detection and roughness 失效
标题翻译：措施速度，加速度，失火检测和粗糙度误差校正
公开(公告)号：US5699252A
公开(公告)日：1997-12-16
申请号：US307846
申请日：1995-04-07
申请人： Stephen J. Citron , Jeffrey S. Armfield
发明人： Stephen J. Citron , Jeffrey S. Armfield
IPC分类号： G01M15/11 , G01M15/00
CPC分类号： G01M15/11
摘要： Methods are presented to remove from misfire/roughness measures both acceleration effects and those errors which are of a cyclical nature over the engine firing cycle. Included in the latter category are errors which repeat every revolution, e.g. tooth spacing errors resulting from manufacturing tolerances on a multitoothed wheel used to measure speed. Also included are errors arising from the cylinder by cylinder variations occurring in one firing cycle which would be essentially the same in neighboring firing cycles, e.g. mechanical and electrical tolerance effects that are cylinder based. These methods permit the correction in each cylinder measure of such cyclic errors on a cycle basis, i.e., after the completion of one or more of the cycles causing the error, or on a cylinder by cylinder basis, i.e., after the completion of the interval associated with an individual cylinder. The methods permit the correction of speed on a tooth by tooth basis in the same manner that the misfire/roughness measures are corrected on a cylinder by cylinder basis. In this way, the corrected speed forms the basis for determining corrected acceleration measures on a tooth by tooth basis.
摘要翻译： PCT No.PCT / US93 / 03121 Sec。 371日期：1995年4月7日 102（e）日期1995年4月7日PCT 1993年3月29日PCT公布。出版物WO93 / 20427 日期1993年10月14日提出了消除/粗糙度的方法来消除加速效应和在发动机点火周期上具有周期性的那些误差。在后一类中包括重复每一次革命的错误，例如由于用于测量速度的多齿轮上的制造公差导致的齿间距误差。还包括由在一个燃烧循环中发生的气缸变化导致气缸产生的误差，其在相邻燃烧循环中将基本相同，例如，基于气缸的机械和电气公差效应。这些方法允许在循环的每个气缸测量中校正这种循环误差，即，在完成一个或多个引起误差的循环之后，或者以气缸为基础，即在间隔完成之后，与单个气缸相关联。这种方法允许以牙齿为基础对牙齿上的速度进行校正，其方式与以缸为单位校正失火/粗糙度测量的相同方式。以这种方式，校正速度构成了基于牙齿的校正加速度测量的基础。

3. 发明授权

US4843870A Cylinder-by-cylinder engine pressure and pressure torque waveform determination utilizing crankshaft speed fluctuations 失效
标题翻译：采用曲轴转速波动的缸缸发动机压力和压力转矩波形测定
公开(公告)号：US4843870A
公开(公告)日：1989-07-04
申请号：US224548
申请日：1988-07-25
申请人： Stephen J. Citron , John E. O'Higgins
发明人： Stephen J. Citron , John E. O'Higgins
IPC分类号： F02D41/14 , G01M15/04
CPC分类号： F02D41/1498 , G01M15/046 , F02D2041/288 , F02D2200/1004 , F02D2200/1015
摘要： An elastic model of the engine-drivetrain system is proposed. Measured crankshaft speed fluctuation data is developed and computations are made from the model to determine the fluctuation waveform of both the total engine torque being developed and the engine pressure torque. Utilizing the engine pressure torque fluctuation waveform, the mean level of engine torque being developed is obtained, thus providing the full engine pressure torque waveform. Finally, the engine pressure torque waveform is used to obtain the cylinder pressure waveform which gave rise to it. Knowledge of these torques and of the cylinder pressure provides the basis for both open loop and adaptive engine control strategies.
摘要翻译：提出了发动机驱动系统的弹性模型。开发测量曲轴速度波动数据，并从模型进行计算，以确定正在开发的总发动机扭矩和发动机压力转矩两者的波动波形。利用发动机压力转矩波动波形，获得正在开发的发动机扭矩的平均水平，从而提供全发动机压力转矩波形。最后，使用发动机压力转矩波形来获得产生气缸压力波形。了解这些扭矩和气缸压力为开环和自适应发动机控制策略提供了基础。

4. 发明授权

US4807151A Electrical technique for correcting bridge type mass air flow rate sensor errors resulting from ambient temperature variations 失效
标题翻译：用于校正由环境温度变化引起的桥式质量空气流量传感器误差的电气技术
公开(公告)号：US4807151A
公开(公告)日：1989-02-21
申请号：US850511
申请日：1986-04-11
申请人： Stephen J. Citron
发明人： Stephen J. Citron
IPC分类号： G01F1/68 , G01F1/696 , G01F1/698 , G01F15/04 , G01R17/12 , G01M15/00 , F02D41/34
CPC分类号： G01F1/698 , G01F1/6965
摘要： A mass flow rate sensor for providing an output signal related to mass flow rate past the sensor includes a bridge circuit for generating a first mass flow rate-related signal containing temperature-related errors and mass flow rate-related errors, a resistance for generating a second signal providing temperature error correction, and a resistance for generating a third signal providing mass flow rate error correction. Electrical circuitry operatively couples the bridge circuit and resistances together to provide the output signal. A method for providing an output signal related to mass flow rate includes the steps of generating a first mass flow rate-related signal containing temperature-related errors and mass flow rate-related errors, generating a second signal providing temperature error correction, generating a third signal providing mass flow rate error correction, and combining the first, second and third signals together to provide the output signal.

5. 发明授权

US4532592A Engine-performance monitor and control system 失效
标题翻译：发动机性能监控系统
公开(公告)号：US4532592A
公开(公告)日：1985-07-30
申请号：US452372
申请日：1982-12-22
申请人： Stephen J. Citron , William P. Mihelc
发明人： Stephen J. Citron , William P. Mihelc
IPC分类号： F02D33/00 , F02D35/00 , F02D41/00 , F02D41/14 , F02D41/34 , F02D41/40 , F02D45/00 , F02P5/04 , F02P5/15 , F02P17/04 , G01M15/00 , G01M15/06 , F02P9/00
CPC分类号： F02D41/008 , F02D41/1498 , F02P17/04 , G01M15/06 , F02D2200/1015 , F02D41/0085
摘要： An engine-performance monitor for determining the relative combustion efficiencies of the cylinders of a multiple cylinder internal combustion engine permits monitoring of engine performance to test engine fuel distribution system and ignition system control strategies. The system can also be incorporated into a feedback system for controlling the performances of the various individual cylinders of a multiple cylinder internal combustion engine.
摘要翻译：用于确定多缸内燃机的气缸的相对燃烧效率的发动机性能监测器允许监测发动机性能以测试发动机燃料分配系统和点火系统控制策略。该系统还可以结合到用于控制多缸内燃机的各个气缸的性能的反馈系统中。

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