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1. 发明授权

US08095292B2 Variable intake manifold diagnostic systems and methods 有权
标题翻译：可变进气歧管诊断系统和方法
公开(公告)号：US08095292B2
公开(公告)日：2012-01-10
申请号：US12470822
申请日：2009-05-22
申请人： Kurt D. McLain , Layne K. Wiggins , Elizabeth Sarah Peterson
发明人： Kurt D. McLain , Layne K. Wiggins , Elizabeth Sarah Peterson
IPC分类号： B60T7/12
CPC分类号： F02D41/0002 , F02B27/0215 , F02B27/0273 , F02B27/0294 , F02D41/062 , F02D41/221 , F02D2200/021 , F02M35/1038 , F02M35/10386 , Y02T10/146 , Y02T10/42
摘要： A system includes a control module, a valve control module, and a diagnostic module. The control module controls a valve of a variable intake manifold when the system operates in a first mode. The control module commands the valve to a first position when a desired airflow through the variable intake manifold is greater than a threshold and commands the valve to a second position when the desired airflow is less than the threshold. The valve control module controls the valve when the system operates in a second mode. The valve control module commands the valve to move from the second position to the first position when the desired airflow is less than the threshold. The diagnostic module determines an operating state of the valve based on whether the valve is detected at the first position a predetermined period after the valve control module commands the valve.
摘要翻译：系统包括控制模块，阀控制模块和诊断模块。当系统以第一模式操作时，控制模块控制可变进气歧管的阀。当所需气流通过可变进气歧管大于阈值时，控制模块将阀门命令到第一位置，并且当所需气流小于阀值时，将阀门命令到第二位置。当系统在第二模式下运行时，阀门控制模块控制阀门。当所需气流小于阈值时，阀控制模块命令阀从第二位置移动到第一位置。诊断模块基于在阀控制模块命令阀之后的预定时间段是否在第一位置检测到阀是否确定阀的操作状态。

2. 发明授权

US08416053B2 Intermittent sensor detection using signal string length 有权
标题翻译：使用信号串长度进行间歇传感器检测
公开(公告)号：US08416053B2
公开(公告)日：2013-04-09
申请号：US12436408
申请日：2009-05-06
申请人： Kurt D. McLain , Layne K. Wiggins , Wenbo Wang
发明人： Kurt D. McLain , Layne K. Wiggins , Wenbo Wang
IPC分类号： G05B23/02
CPC分类号： G05B9/02 , G05B23/0235
摘要： An engine control system comprises a signal deviation module, a variation determination module, and a sensor diagnostic module. The signal deviation module receives a signal from a sensor monitoring an operating condition of an engine and determines a plurality of signal deviations. Each of the plurality of signal deviations is based on a magnitude of a difference between the signal at a first time and the signal at a second time. The second time is different than the first time. The variation determination module generates a variation value based on the plurality of signal deviations during a period. The sensor diagnostic module determines a state of the sensor based on the variation value.
摘要翻译：发动机控制系统包括信号偏差模块，变化确定模块和传感器诊断模块。信号偏差模块接收来自传感器的信号，监测发动机的运行状态并确定多个信号偏差。多个信号偏差中的每一个基于第一时间的信号与第二时间的信号之间的差值的大小。第二次与第一次不同。变化确定模块在一段时间内基于多个信号偏差生成变化值。传感器诊断模块基于变化值来确定传感器的状态。

3. 发明授权

US08234038B2 Intake air temperature diagnostic system 失效
标题翻译：进气温度诊断系统
公开(公告)号：US08234038B2
公开(公告)日：2012-07-31
申请号：US11945608
申请日：2007-11-27
申请人： Kurt D. McLain , Wenbo Wang
发明人： Kurt D. McLain , Wenbo Wang
IPC分类号： G01M17/00 , B63B35/73 , F02M23/08
CPC分类号： G01M15/042 , F02D41/187 , F02D41/222 , F02D2200/0414 , F02D2200/0416 , G01K13/02 , G01K15/00 , G01K15/007 , Y02T10/40
摘要： A method of evaluating intake air temperature (IAT) sensor rationality may include measuring a first intake air temperature associated with an engine using an IAT sensor when the engine is in a non-operating condition, determining a second intake air temperature associated with the engine using a hot wire air flow meter when the engine is in the non-operating condition, and indicating an IAT sensor fault when a difference between the first and second intake air temperatures exceeds a predetermined temperature limit.
摘要翻译：评估进气温度（IAT）传感器理性的方法可以包括：当发动机处于非运行状态时，使用IAT传感器测量与发动机相关联的第一进气温度，确定与发动机相关联的第二进气温度当发动机处于非运行状态时，热线空气流量计，当第一和第二进气温度之间的差超过预定温度极限时，指示IAT传感器故障。

4. 发明申请

US20090187301A1 Detection of Engine Intake Manifold Air-Leaks 有权
标题翻译：检测发动机进气歧管空气泄漏
公开(公告)号：US20090187301A1
公开(公告)日：2009-07-23
申请号：US12015750
申请日：2008-01-17
申请人： Wenbo Wang , Kurt D. McLain , Zhong Wang
发明人： Wenbo Wang , Kurt D. McLain , Zhong Wang
IPC分类号： F02D41/00 , F02D35/02
CPC分类号： F02D41/18 , F02D41/0002 , F02D41/22 , F02D2200/0402
摘要： A method of determining an engine intake air leak may include measuring an air flow rate into an internal combustion engine, comparing the measured air flow rate to a first predetermined air flow limit, calculating an estimated air flow rate into the engine when the measured air flow rate is less than the first predetermined air flow limit, comparing the estimated air flow rate to second and third predetermined air flow limits, and indicating an air leak when the estimated air flow rate is greater than the second predetermined air flow limit and less than the third predetermined air flow limit.
摘要翻译：确定发动机进气泄漏的方法可以包括测量进入内燃机的空气流量，将测量的空气流量与第一预定空气流量限制进行比较，计算当测量的空气流量时进入发动机的估计空气流量速率小于第一预定空气流量限制，将估计的空气流量与第二和第三预定空气流量限制进行比较，并且当估计空气流量大于第二预定空气流量限制时指示空气泄漏，并且小于第三预定气流限制。

5. 发明申请

US20080319600A1 Intake air temperature rationality diagnostic 有权
标题翻译：进气温度合理性诊断
公开(公告)号：US20080319600A1
公开(公告)日：2008-12-25
申请号：US11821591
申请日：2007-06-22
申请人： Kurt D. McLain , Wenbo Wang
发明人： Kurt D. McLain , Wenbo Wang
IPC分类号： G06F19/00
CPC分类号： F02D41/222 , F02D41/187 , F02D2041/0075 , F02D2200/0402 , F02D2200/0408 , F02D2200/0414 , G01K7/42 , G01K15/00 , G01K15/007 , G01M15/09 , Y02T10/40
摘要： A method of determining whether a fault condition of an intake air temperature (IAT) sensor of an engine is present includes estimating a first manifold absolute pressure (MAP) based on a previously estimated first MAP and an estimated first mass air flow (MAF) as a function of the previously estimated first MAP and estimating a second MAP based on a previously estimated second MAP and a currently measured MAF. An IAT difference is determined based on the first MAP and the second MAP. Whether the fault condition of the IAT sensor is present is determined based on the IAT difference.
摘要翻译：确定发动机的进气温度（IAT）传感器的故障状况是否存在的方法包括基于先前估计的第一MAP和估计的第一质量空气流（MAF）估计第一歧管绝对压力（MAP）作为预先估计的第一MAP的功能，并且基于先前估计的第二MAP和当前测量的MAF来估计第二MAP。基于第一MAP和第二MAP确定IAT差异。基于IAT差异确定IAT传感器的故障状态是否存在。

6. 发明申请

US20110192220A1 RESTRICTED FILTER DIAGNOSTIC SYSTEM AND METHOD 有权
标题翻译：限制性过滤器诊断系统和方法
公开(公告)号：US20110192220A1
公开(公告)日：2011-08-11
申请号：US12703952
申请日：2010-02-11
申请人： Robert Jackson , Kurt D. McLain , Miles K. Maxey , Kenneth J. Kalvelage
发明人： Robert Jackson , Kurt D. McLain , Miles K. Maxey , Kenneth J. Kalvelage
IPC分类号： G01M15/04
CPC分类号： G01M15/09
摘要： A restriction diagnostic system for a vehicle comprises a pressure difference module and a diagnostic module. The pressure difference module determines a pressure difference between an ambient air pressure and a filtered air pressure measured at a location between an air filter and a valve that is selectively opened to enable ambient airflow through the air filter to a fuel vapor canister. The diagnostic module selectively diagnoses restriction of the airflow through the air filter when the pressure difference is greater than a predetermined pressure.
摘要翻译：用于车辆的限制诊断系统包括压力差模块和诊断模块。压力差模块确定在空气过滤器和选择性地打开的阀之间的位置处测量的环境空气压力和过滤空气压力之间的压力差，以使环境气流通过空气过滤器到达燃料蒸气罐。当压力差大于预定压力时，诊断模块选择性地诊断通过空气过滤器的气流的限制。

7. 发明授权

US07886585B2 Intake air temperature sensor diagnostic systems with adaptive learning modules 有权
标题翻译：进气温度传感器诊断系统具有自适应学习模块
公开(公告)号：US07886585B2
公开(公告)日：2011-02-15
申请号：US12179682
申请日：2008-07-25
申请人： Kurt D. McLain , Wenbo Wang
发明人： Kurt D. McLain , Wenbo Wang
IPC分类号： G01M15/04
CPC分类号： F02D41/18 , F02D41/222 , F02D41/2474 , F02D2200/0414
摘要： A diagnostic system for an internal combustion engine includes an intake air temperature (IAT) determination module, a reference temperature determination module, and an adaptive learning module. The IAT determination modules determines a first IAT using an IAT sensor at a first time and determines a second IAT using the IAT sensor at a second time. The reference temperature determination module determines a first frequency based on a first voltage output of a MAF sensor at the first time and determines a second frequency based on a second voltage output of the MAF sensor at the second time. The adaptive learning module determines a temperature-frequency relationship based on the first IAT, the second IAT, the first frequency and the second frequency.
摘要翻译：一种用于内燃机的诊断系统包括进气温度（IAT）确定模块，参考温度确定模块和自适应学习模块。 IAT确定模块在第一时间使用IAT传感器确定第一IAT，并且在第二时间使用IAT传感器确定第二IAT。参考温度确定模块基于第一次MAF传感器的第一电压输出确定第一频率，并且在第二时间基于MAF传感器的第二电压输出确定第二频率。自适应学习模块基于第一IAT，第二IAT，第一频率和第二频率确定温度 - 频率关系。

8. 发明授权

US07369937B1 Intake air temperature rationality diagnostic 有权
标题翻译：进气温度合理性诊断
公开(公告)号：US07369937B1
公开(公告)日：2008-05-06
申请号：US11821590
申请日：2007-06-22
申请人： Wenbo Wang , Kurt D. McLain , Zhong Wang
发明人： Wenbo Wang , Kurt D. McLain , Zhong Wang
IPC分类号： F02D45/00 , G06F19/00
CPC分类号： F02D41/222 , F02D41/18 , F02D2200/0402 , F02D2200/0414 , Y02T10/40
摘要： A method of determining whether a fault condition of an intake air temperature (IAT) sensor of an engine is present includes estimating a first intake charge temperature (ICT) based on an estimated first ICT and a previously estimated first mass air flow (MAF) and estimating a second ICT based on a previously estimated second ICT and a currently measured MAF. An IAT difference is determined based on the first ICT and the second ICT. Whether the fault condition of the IAT sensor is present is determined based on the IAT difference.
摘要翻译：确定发动机的进气温度（IAT）传感器的故障状况是否存在的方法包括基于估计的第一ICT和先前估计的第一质量空气流（MAF）来估计第一进气充量温度（ICT）和基于先前估计的第二ICT和当前测量的MAF估计第二ICT。 IAT的差异是基于第一个ICT和第二个ICT确定的。基于IAT差异确定IAT传感器的故障状态是否存在。

9. 发明授权

US08739605B2 System and method for diagnosing faults in vacuum pumps of fuel systems and for diagnosing leaks in fuel systems 有权
标题翻译：用于诊断燃油系统真空泵故障和诊断燃油系统泄漏的系统和方法
公开(公告)号：US08739605B2
公开(公告)日：2014-06-03
申请号：US12952522
申请日：2010-11-23
申请人： Kurt D. McLain , William R. Cadman
发明人： Kurt D. McLain , William R. Cadman
IPC分类号： G01M3/04
CPC分类号： F02M25/0809 , F02D41/0032 , F02D2041/225 , Y10T137/0318 , Y10T137/7837
摘要： A control system includes a switching valve control module, a pressure determination module, and a fuel system diagnostic module. The switching valve control module actuates a switching valve in a fuel system of a vehicle between a first position and a second position, the first position venting a suction side of a vacuum pump in the fuel system to an atmosphere, the second position sealing the suction side of the vacuum pump from the atmosphere. The pressure determination module determines a first pressure on the suction side of the vacuum pump when the switching valve is in the first position, and determines a second pressure on the suction side of the vacuum pump when the switching valve is in the second position. The fuel system diagnostic module selectively diagnoses a fault in the vacuum pump based on the first pressure and the second pressure.
摘要翻译：控制系统包括切换阀控制模块，压力确定模块和燃料系统诊断模块。切换阀控制模块致动在第一位置和第二位置之间的车辆的燃料系统中的切换阀，第一位置将燃料系统中的真空泵的吸入侧排出到大气中，第二位置将吸入一侧的真空泵从大气层。当切换阀处于第一位置时，压力确定模块确定真空泵的吸入侧上的第一压力，并且当切换阀处于第二位置时确定真空泵的吸入侧上的第二压力。燃料系统诊断模块基于第一压力和第二压力选择性地诊断真空泵中的故障。

10. 发明授权

US08447456B2 Detection of engine intake manifold air-leaks 有权
标题翻译：检测发动机进气歧管漏气
公开(公告)号：US08447456B2
公开(公告)日：2013-05-21
申请号：US12015750
申请日：2008-01-17
申请人： Wenbo Wang , Kurt D. McLain
发明人： Wenbo Wang , Kurt D. McLain
IPC分类号： G06F11/30
CPC分类号： F02D41/18 , F02D41/0002 , F02D41/22 , F02D2200/0402
摘要： A method of determining an engine intake air leak may include measuring an air flow rate into an internal combustion engine, comparing the measured air flow rate to a first predetermined air flow limit, calculating an estimated air flow rate into the engine when the measured air flow rate is less than the first predetermined air flow limit, comparing the estimated air flow rate to second and third predetermined air flow limits, and indicating an air leak when the estimated air flow rate is greater than the second predetermined air flow limit and less than the third predetermined air flow limit.
摘要翻译：确定发动机进气泄漏的方法可以包括测量进入内燃机的空气流量，将测量的空气流量与第一预定空气流量限制进行比较，计算当测量的空气流量时进入发动机的估计空气流量速率小于第一预定空气流量限制，将估计的空气流量与第二和第三预定空气流量限制进行比较，并且当估计空气流量大于第二预定空气流量限制时指示空气泄漏，并且小于第三预定气流限制。

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