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1. 发明授权

US06837226B2 System for diagnosing EGR valve, actuator and sensor related failure conditions 有权
标题翻译：用于诊断EGR阀，执行器和传感器相关故障条件的系统
公开(公告)号：US06837226B2
公开(公告)日：2005-01-04
申请号：US09774524
申请日：2001-01-31
申请人： Yue Yun Wang , Xiaoqui Li , Mark R. Stepper , Chang Yang
发明人： Yue Yun Wang , Xiaoqui Li , Mark R. Stepper , Chang Yang
IPC分类号： F02M25/07 , F02B47/08
CPC分类号： F02M26/48 , F02B29/0406 , F02M26/23 , F02M26/47 , F02M26/49
摘要： An EGR fault/failure determination system for an internal combustion engine is operable to monitor a number of EGR system operational parameters and diagnose various EGR-related fault and failure statuses therefrom. For example, the system is operable to determine a number of EGR system-related fault and failure conditions by monitoring measured and command EGR position signals to determine EGR valve controller functionality, to monitor response times between fully open and closed EGR valve positions by comparing measured response times to a calibratable response time value, and to monitor in-range EGR position failures associated with fully closed and fully opened EGR valve position values. The system further includes a Kalman filter-based fault/failure isolation feature operable to isolate and identify one or more sources of EGR valve-related faults/failures.

2. 发明授权

US06925376B2 System for diagnosing operation of a cooling system for an internal combustion engine 有权
标题翻译：用于诊断用于内燃机的冷却系统的操作的系统
公开(公告)号：US06925376B2
公开(公告)日：2005-08-02
申请号：US10404757
申请日：2003-04-01
申请人： Xiaoqiu Li , Todd C. Slater , Mark R. Stepper , Anthony J. Abbenante , Stephanie L. Goerges , Yue Yun Wang
发明人： Xiaoqiu Li , Todd C. Slater , Mark R. Stepper , Anthony J. Abbenante , Stephanie L. Goerges , Yue Yun Wang
IPC分类号： F01P11/14 , F01P11/16 , G60G7/70
CPC分类号： F01P11/16 , F01P11/14 , F01P2023/00 , F01P2023/08 , F01P2025/08 , F01P2025/62 , F01P2031/00
摘要： A system for diagnosing operation of a cooling system for an internal combustion engine includes a coolant temperature sensor producing a temperature signal corresponding to coolant fluid temperature, means for determining either an engine load or a throttle percentage, and a control computer configured to diagnose operation of the cooling system as a function of the temperature signal, either the engine load or throttle percentage, and a fuel delivery command for controllably supplying fuel to the engine. After expiration of a diagnostic period, the control computer diagnoses the cooling system as normally operating if the diagnostic period ended by the temperature signal meeting or exceeding a predefined temperature and if a total energy used by the engine during the diagnostic period is less than an estimated energy, and diagnoses the cooling system as failing if the total energy used during the diagnostic period otherwise meets or exceeds the estimated energy.
摘要翻译：用于诊断内燃机的冷却系统的操作的系统包括：冷却剂温度传感器，其产生对应于冷却剂流体温度的温度信号，用于确定发动机负载或节流百分比的装置;以及控制计算机，作为温度信号的函数的冷却系统，发动机负载或节流百分比，以及用于可控地向发动机供应燃料的燃料输送命令。在诊断期限结束后，如果诊断期间以温度信号满足或超过预定温度结束，则控制计算机将冷却系统诊断为正常运行，并且如果诊断期间发动机使用的总能量小于估计值能量，并且如果在诊断期间使用的总能量否则满足或超过估计的能量，则将冷却系统诊断为故障。

3. 发明授权

US06802302B1 System for diagnosing EGR flow rate operation 有权
标题翻译：用于诊断EGR流量运行的系统
公开(公告)号：US06802302B1
公开(公告)日：2004-10-12
申请号：US10409307
申请日：2003-04-08
申请人： Xiaoqiu Li , Mark R. Stepper , Stephanie L. Goerges , Yue Yun Wang
发明人： Xiaoqiu Li , Mark R. Stepper , Stephanie L. Goerges , Yue Yun Wang
IPC分类号： F02M2507
CPC分类号： F02D21/08 , F02B29/0406 , F02D41/0072 , F02M26/05 , F02M26/23 , F02M26/47 , F02M26/49 , Y02T10/47
摘要： A system is disclosed for diagnosing EGR flow rate operation in an internal combustion engine includes an intake manifold and an exhaust manifold coupled to the engine and an EGR conduit for recirculating exhaust gas from the exhaust manifold to the intake manifold. Means are provided for determining an EGR fraction corresponding to a fractional amount of recirculated exhaust gas in a total air charge supplied to the intake manifold. A control computer is configured to continually accumulate at least one EGR fraction error sum as a function of the EGR fraction and a desired EGR fraction, and to diagnose EGR flow rate operation as a function of the accumulated value of the at least one EGR fraction error sum.
摘要翻译：公开了一种用于诊断内燃机中的EGR流量操作的系统，其包括联接到发动机的进气歧管和排气歧管以及用于将废气从排气歧管再循环到进气歧管的EGR导管。提供了用于确定与供应到进气歧管的总空气气体中的再循环废气的分数量相对应的EGR分数的装置。控制计算机被配置为连续累积作为EGR分数和期望EGR分数的函数的至少一个EGR分数误差和，并且作为至少一个EGR分数误差的累积值的函数来诊断EGR流量操作和。

4. 发明授权

US06363318B1 Method to compensate errors in engine speed measurement 有权
标题翻译：补偿发动机转速测量误差的方法
公开(公告)号：US06363318B1
公开(公告)日：2002-03-26
申请号：US09598212
申请日：2000-06-21
申请人： Yue Yun Wang , Mark R. Stepper
发明人： Yue Yun Wang , Mark R. Stepper
IPC分类号： G06G1900
CPC分类号： F02D41/0097 , F02D41/1498 , F02D2200/1015 , G01P3/489
摘要： The invention provides a software method to correct for non-fuel injection induced errors in measured engine speed. This invention provides a means to calculate a least squares regression of the measured engine speed data when the engine is motoring without combustion or load. The motoring test is to avoid the effect of unbalanced cylinder power, thus detecting only the static errors in engine speed measurements. Recognizing that the average cylinder speed should form a straight line within an engine cycle, the lease squares regression of the measured speed data therefore represents the theoretical performance of the engine. A residual between this theoretical performance and the actual measured engine speed can therefore be determined. A table of mean residuals which are averages of individual residuals measured in consecutive engine cycles is constructed for each engine at a reference engine speed. The mean residuals are convertible to other operating speed ranges of the engine and can be subtracted from the engine speed measurements to remove the static errors. This mean residual table is stored as a look-up table in the memory associated with the engine control module (ECM) microprocessor and can be implemented within the software code being executed by the ECM microprocessor.
摘要翻译：本发明提供了一种在测量的发动机转速下校正非燃料喷射引起的误差的软件方法。本发明提供了当发动机在没有燃烧或负载的情况下进行运动时，计算所测量的发动机转速数据的最小二乘回归的方法。电动试验是为了避免不平衡气缸功率的影响，从而仅检测发动机转速测量中的静态误差。认识到平均气缸速度应在发动机循环内形成直线，因此测量速度数据的租赁平方回归表示发动机的理论性能。因此可以确定该理论性能与实际发动机转速之间的残差。以参考发动机速度为每台发动机构造在连续发动机循环中测量的各个残差的平均值的平均残差表。平均残差可转换为发动机的其他工作速度范围，并可从发动机转速测量中减去以消除静态误差。该平均剩余表作为查找表存储在与发动机控制模块（ECM）微处理器相关联的存储器中，并且可以在由ECM微处理器执行的软件代码内实现。

5. 发明授权

US5482013A Air intake heating and diagnostic system for internal combustion engines 失效
标题翻译：内燃机进气加热和诊断系统
公开(公告)号：US5482013A
公开(公告)日：1996-01-09
申请号：US311562
申请日：1994-09-23
申请人： Eric B. Andrews , Mark R. Stepper
发明人： Eric B. Andrews , Mark R. Stepper
IPC分类号： F02M31/04 , F02M31/13 , F02N19/04 , F02N19/06 , F02P19/00
CPC分类号： F02N19/06 , F02M31/042 , F02M31/13 , F02N19/04 , Y02T10/126
摘要： An air intake heating and diagnostic system for an internal combustion engine includes a microprocessor based controller for activating electrical heating elements for a preheat time period prior to starting the engine and for a postheat time period after starting the engine. The controller receives inputs corresponding to intake manifold air temperature, battery temperature, vehicle speed, engine speed, and key switch position. The system continuously monitors the integrity of the various sensors, monitors the functionality of the heating elements during the postheat time period, and warns the vehicle operator by illuminating a "check engine" lamp if certain fault conditions are detected. In both cases, the controller sets fault flags within the controller memory corresponding to the detected fault conditions.
摘要翻译：用于内燃机的进气加热和诊断系统包括基于微处理器的控制器，用于在启动发动机之前的预热时间段和启动发动机之后的后加热时间段中激活电加热元件。控制器接收与进气歧管空气温度，电池温度，车速，发动机转速和钥匙开关位置相对应的输入。系统连续地监视各种传感器的完整性，在后热时间期间监视加热元件的功能，并且如果检测到某些故障状况，则通过照亮“检查发动机”灯来警告车辆操作者。在这两种情况下，控制器根据检测到的故障条件设置控制器存储器内的故障标志。

6. 发明授权

US5121723A Engine brake control apparatus and method 失效
标题翻译：发动机制动控制装置及方法
公开(公告)号：US5121723A
公开(公告)日：1992-06-16
申请号：US677651
申请日：1991-03-29
申请人： Mark R. Stepper , Gregory R. White , Jeffrey P. Seger , Douglas VanKlompenburg , James H. Green , Richard Ling
发明人： Mark R. Stepper , Gregory R. White , Jeffrey P. Seger , Douglas VanKlompenburg , James H. Green , Richard Ling
IPC分类号： F02D13/04
CPC分类号： F02D13/04
摘要： An electronic microcomputer based engine brake control device and a method for controlling an engine compression brake is disclosed. An algorithm for enabling engine brake operation includes monitoring a brake enable switch, engine RPM, engine fueling rate, cruise control or power takeoff system activation state, throttle position, manifold pressure and clutch pedal position. Engine brake operation is fully automatic and operates in a safe manner according to the disclosed algorithm.
摘要翻译：公开了一种基于电子微型计算机的发动机制动控制装置和发动机压缩制动器的控制方法。用于启动发动机制动操作的算法包括监视制动使能开关，发动机转速，发动机加油速率，巡航控制或动力输出系统启动状态，节气门位置，歧管压力和离合器踏板位置。发动机制动操作是全自动的，并且根据所公开的算法以安全的方式操作。

7. 发明授权

US5109819A Accelerator control system for a motor vehicle 失效
标题翻译：汽车加速器控制系统
公开(公告)号：US5109819A
公开(公告)日：1992-05-05
申请号：US677141
申请日：1991-03-29
申请人： Robert J. Custer , Mark R. Stepper
发明人： Robert J. Custer , Mark R. Stepper
IPC分类号： F02D11/10
CPC分类号： F02D11/106 , F02D2041/227
摘要： An accelerator control system having an analog pedal position sensor and an idle switch capable of generating complementary output signals indicative of pedal position. The system includes a control circuit which commands the engine to an idle speed if the analog sensor indicates an idle state or if the complementary output signals together indicate an idle state. The system overrides the idle switch in the absence of complementary output signals therefrom and allows operation in response to the pedal position sensor as long as its output signal is within a predetermined range. Provision is made for operation at a reduced performance level in the event of an out-of-range failure of the analog sensor if the complementary output signals together indicate a non-idle condition.
摘要翻译：一种加速器控制系统，其具有模拟踏板位置传感器和能够产生指示踏板位置的互补输出信号的怠速开关。该系统包括控制电路，如果模拟传感器指示空闲状态或互补输出信号在一起指示空闲状态，则该控制电路命令发动机处于怠速状态。在没有互补的输出信号的情况下，该系统覆盖怠速开关，并且只要其输出信号在预定范围内，就可以响应于踏板位置传感器进行操作。如果互补输出信号一起表示非空闲状态，则在模拟传感器超出范围故障的情况下，以降低的性能水平进行操作。

8. 发明授权

US5243523A Method and device for computing a stabilized vehicle speed value from a pulse signal 失效
标题翻译：用于从脉冲信号计算稳定的车速值的方法和装置
公开(公告)号：US5243523A
公开(公告)日：1993-09-07
申请号：US677653
申请日：1991-03-29
申请人： Mark R. Stepper , Richard Ling , James H. Green
发明人： Mark R. Stepper , Richard Ling , James H. Green
IPC分类号： B60K31/04 , G01P3/489
CPC分类号： G01P3/489 , B60K31/047 , Y02T10/84
摘要： A method is provided for computing a stabilized vehicle speed value from a detected vehicle speed pulse signal and a detected engine speed signal, the vehicle speed value being for use by a vehicle speed control system. The method comprises several continuous cyclic steps commncing with generating a measured vehicle speed value from the detected vehicle speed pulse signal and generating a measured engine speed value from the detected engine speed signal. A current gear ratio is calculated from the measured vehicle speed value and the measured engine speed value. This current gear ratio is then passed through a single pole digital filter to filter changes in the gear ratio between consecutive cycles as a function of the current gear ratio and the gear ratio computed in the last preceding cycle of the computation. A current usable gear ratio is generated which is changed from the most recently generated usable gear ratio only if changes in the gear ratio exceed predetermined limit values. Otherwise the current usable gear ratio is unchanged from its most recently generated value. A stabilized predicted vehicle speed value is then computed from the measured engine speed and the current usable gear ratio for use by the vehicle speed control system. Slew rate limiting of the predicted vehicle speed is also provided by the method.
摘要翻译：提供了一种用于根据检测到的车速脉冲信号和检测到的发动机速度信号计算稳定的车速值的方法，车速值由车速控制系统使用。该方法包括几个连续循环步骤，从检测到的车速脉冲信号产生测量的车辆速度值，并根据检测到的发动机转速信号产生测量的发动机转速值。根据测量的车速值和测量的发动机转速值计算当前齿轮比。该当前齿轮比然后通过单极数字滤波器，以根据当前齿轮比和在计算的最后一个循环中计算的齿轮比来滤除连续循环之间的齿轮比的变化。产生当前可用的齿轮比，其仅当齿轮比的变化超过预定极限值时才从最近产生的可用齿轮比改变。否则，当前可用的传动比与其最近产生的值不变。然后根据测量的发动机转速和当前可用的变速比来计算稳定的预测车速值以供车速控制系统使用。通过该方法也提供了预测车速的限制转速。

9. 发明授权

US5165271A Single sensor apparatus and method for determining engine speed and position 失效
标题翻译：单传感器装置和确定发动机转速和位置的方法
公开(公告)号：US5165271A
公开(公告)日：1992-11-24
申请号：US677667
申请日：1991-03-29
申请人： Mark R. Stepper , Thomas E. Kitterman , Robert S. Strothmann
发明人： Mark R. Stepper , Thomas E. Kitterman , Robert S. Strothmann
IPC分类号： F02D45/00 , F02D41/34 , F02P7/067 , G01B7/00 , G01B7/30 , G01D5/14 , G01D5/16 , G01D5/20 , G01D5/245 , G01P3/481 , G01P3/488 , G01P3/489
CPC分类号： G01D5/147 , F02D41/009 , F02D41/0097 , F02P7/0675 , G01D5/142 , G01D5/2006 , G01D5/2013 , G01D5/2457 , G01P3/481 , G01P3/488 , G01P3/489
摘要： A single sensor apparatus and method for determining engine position and engine speed is disclosed. The apparatus includes a gear rotating in synchronism with the camshaft of an internal combustion engine. The gear includes a number of equiangularly spaced teeth, and an additional tooth mechanically synchronized with top dead center position of a particular cylinder of the engine. An algorithm is disclosed for detecting the added tooth with a high reliability and accuracy. In addition, engine speed is determined by measuring the time interval required for a predetermined quantity of gear teeth to pass the sensor by detecting the pulses corresponding to the gear teeth. The resulting time interval is converted into engine speed through a known relationship between the number of teeth on the gear and their angular spacing.
摘要翻译：公开了用于确定发动机位置和发动机转速的单个传感器装置和方法。该装置包括与内燃机的凸轮轴同步旋转的齿轮。齿轮包括多个等角度间隔的齿，以及与发动机的特定气缸的上止点位置机械同步的附加齿。公开了一种用于以高可靠性和准确度检测加牙的算法。此外，通过检测与齿轮齿相对应的脉冲，通过测量预定量的齿轮齿通过传感器所需的时间间隔来确定发动机转速。所产生的时间间隔通过齿轮上的齿数与其角度间隔之间已知的关系转换成发动机转速。

10. 发明授权

US5137000A Device and method for decreasing delays in fuel injected internal combustion engines 失效
标题翻译：减少燃油喷射内燃机延误的装置和方法
公开(公告)号：US5137000A
公开(公告)日：1992-08-11
申请号：US677786
申请日：1991-03-29
申请人： Mark R. Stepper , Edwin A. Johnson
发明人： Mark R. Stepper , Edwin A. Johnson
IPC分类号： F02D45/00 , F02D41/00 , F02D41/20 , F02D41/26 , F02D41/34 , F02D41/40
CPC分类号： F02D41/008 , F02D41/263 , F02D41/34 , Y02T10/44
摘要： An engine control device for electronically controlling fuel injection of an engine is disclosed. The engine control device includes algorithms for instantaneously calculating fueling requirements in accordance with sensory inputs corresponding to engine operating conditions and throttle position. The fueling requirements are instantaneously reflected as modifications of the duration of fueling signals supplied to the fuel injectors, so that instantaneous fueling changes are effected. Fuel is conserved, and engine responsiveness improved in the current or presently occurring fuel injection cycle as a result of the immediate responsiveness of the engine control device operation.

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