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1. 发明申请

US20170355376A1 RESPONSE AMPLITUDE MODIFICATION FOR HYBRID ELECTRIC VEHICLE MISFIRE DETECTIONS 有权
公开(公告)号：US20170355376A1
公开(公告)日：2017-12-14
申请号：US15176379
申请日：2016-06-08
申请人： Yichao Guo , Robert Stack , Gang Wu , Marcio Quiles
发明人： Yichao Guo , Robert Stack , Gang Wu , Marcio Quiles
IPC分类号： B60W30/20 , B60W20/50 , F02D41/14 , B60W10/10
CPC分类号： B60W30/20 , B60W10/10 , B60W20/50 , B60W2030/206 , B60W2510/06 , F02D41/1498 , Y10S903/917
摘要： Misfire detection techniques for a hybrid electric vehicle (HEV) including an internal combustion engine and an electric motor involve utilizing a crankshaft speed sensor configured to generate a crankshaft speed signal indicative of a rotational speed of a crankshaft of the engine that is coupled to the electric motor via a flywheel. The techniques also utilize a controller configured to control the electric motor to provide a vibrational response to dampen disturbances to the crankshaft, receive the crankshaft speed signal, selectively modify the crankshaft speed signal to obtain a modified crankshaft speed signal, and detect a misfire of the engine based on the modified crankshaft speed signal and a set of thresholds including at least one of a negative misfire threshold and a positive vibrational response threshold.

2. 发明授权

US10005469B2 Response amplitude modification for hybrid electric vehicle misfire detections 有权
公开(公告)号：US10005469B2
公开(公告)日：2018-06-26
申请号：US15176379
申请日：2016-06-08
申请人： Yichao Guo , Robert Stack , Gang Wu , Marcio Quiles
发明人： Yichao Guo , Robert Stack , Gang Wu , Marcio Quiles
IPC分类号： B60W30/20 , B60W10/10 , B60W20/50 , F02D41/14
CPC分类号： B60W30/20 , B60W10/10 , B60W20/50 , B60W2030/206 , B60W2510/06 , F02D41/1498 , Y10S903/917
摘要： Misfire detection techniques for a hybrid electric vehicle (HEV) including an internal combustion engine and an electric motor involve utilizing a crankshaft speed sensor configured to generate a crankshaft speed signal indicative of a rotational speed of a crankshaft of the engine that is coupled to the electric motor via a flywheel. The techniques also utilize a controller configured to control the electric motor to provide a vibrational response to dampen disturbances to the crankshaft, receive the crankshaft speed signal, selectively modify the crankshaft speed signal to obtain a modified crankshaft speed signal, and detect a misfire of the engine based on the modified crankshaft speed signal and a set of thresholds including at least one of a negative misfire threshold and a positive vibrational response threshold.

3. 发明授权

US09879630B2 Intake oxygen sensor rationality diagnostics 有权
公开(公告)号：US09879630B2
公开(公告)日：2018-01-30
申请号：US14547223
申请日：2014-11-19
申请人： Yichao Guo , Robert Stack , Zhijian J Wu
发明人： Yichao Guo , Robert Stack , Zhijian J Wu
IPC分类号： F02D41/00 , F02D41/22 , F02M26/48 , F02D41/14
CPC分类号： F02D41/222 , F02D41/0055 , F02D41/1439 , F02D41/144 , F02D41/1456 , F02D2041/228 , F02M26/48 , Y02T10/47
摘要： Rationality diagnostic techniques for an intake oxygen sensor are utilized to detect sensor malfunction. A non-intrusive diagnostic technique includes passively detecting when an exhaust gas recirculation (EGR) valve position crosses low/high position thresholds, whereas an intrusive diagnostic technique includes actively commanding the EGR valve to predetermined low/high positions. During a period after the EGR valve position reaches/crosses at least one of the low/high positions/position thresholds, respectively, maximum and minimum intake oxygen concentration is monitored. When the EGR valve position has crossed both the low/high positions/position thresholds and a difference between the maximum and minimum oxygen concentrations is less than a respective difference threshold, a malfunction of the intake oxygen sensor is detected. A malfunction indicator lamp (MIL) could be set to indicate the malfunction. The intrusive technique is additionally or alternatively implemented, such as part of a verification or backup to the non-intrusive technique.

4. 发明授权

US09224252B1 Method of diagnosing the rationality of a humidity sensor output signal 有权
标题翻译：诊断湿度传感器输出信号的合理性的方法
公开(公告)号：US09224252B1
公开(公告)日：2015-12-29
申请号：US14338382
申请日：2014-07-23
申请人： Yichao Guo , Robert Stack
发明人： Yichao Guo , Robert Stack
IPC分类号： F02D13/02 , G07C5/08
CPC分类号： G07C5/0808
摘要： A method of diagnosing rationality of a humidity sensor output signal determines that the humidity sensor output signal has passed a rationality diagnostic if the output signal is changing sufficiently. If the output signal is not changing sufficiently, the method determines whether it should be changing sufficiently by whether a humidity capacity index determined based on temperature and pressure local to the humidity sensor is changing sufficiently. If the humidity capacity index is changing sufficiently and the humidity sensor output signal is not, the method determines that the humidity sensor output signal has failed a diagnostic check. Upon determining that the humidity sensor output signal has failed the diagnostic check a predetermined number of times, the method determines that the humidity sensor output signal has failed the rationality diagnostic.
摘要翻译：诊断湿度传感器输出信号的合理性的方法，如果输出信号充分变化，则确定湿度传感器输出信号已经通过合理性诊断。如果输出信号没有充分变化，则通过根据湿度传感器的局部温度和压力确定的湿度容量指标是否正在充分改变，该方法确定是否应该充分变化。如果湿度容量指标充分变化且湿度传感器输出信号不正确，则该方法确定湿度传感器输出信号未能进行诊断检查。在确定湿度传感器输出信号失败的情况下，诊断检查预定次数，该方法确定湿度传感器输出信号失败了理性诊断。

5. 发明申请

US20160138527A1 INTAKE OXYGEN SENSOR RATIONALITY DIAGNOSTICS 有权
标题翻译：摄入氧传感器可靠性诊断
公开(公告)号：US20160138527A1
公开(公告)日：2016-05-19
申请号：US14547223
申请日：2014-11-19
申请人： Yichao Guo , Robert Stack , Zhijian J. Wu
发明人： Yichao Guo , Robert Stack , Zhijian J. Wu
IPC分类号： F02M25/07
CPC分类号： F02D41/222 , F02D41/0055 , F02D41/1439 , F02D41/144 , F02D41/1456 , F02D2041/228 , F02M26/48 , Y02T10/47
摘要： Rationality diagnostic techniques for an intake oxygen sensor are utilized to detect sensor malfunction. A non-intrusive diagnostic technique includes passively detecting when an exhaust gas recirculation (EGR) valve position crosses low/high position thresholds, whereas an intrusive diagnostic technique includes actively commanding the EGR valve to predetermined low/high positions. During a period after the EGR valve position reaches/crosses at least one of the low/high positions/position thresholds, respectively, maximum and minimum intake oxygen concentration is monitored. When the EGR valve position has crossed both the low/high positions/position thresholds and a difference between the maximum and minimum oxygen concentrations is less than a respective difference threshold, a malfunction of the intake oxygen sensor is detected. A malfunction indicator lamp (MIL) could be set to indicate the malfunction. The intrusive technique is additionally or alternatively implemented, such as part of a verification or backup to the non-intrusive technique.
摘要翻译：用于进气氧传感器的合理性诊断技术用于检测传感器故障。非侵入性诊断技术包括被动检测排气再循环（EGR）阀位置何时穿过低/高位置阈值，而侵入式诊断技术包括主动地将EGR阀指令到预定的低/高位置。在EGR阀位置达到/超过低/高位置/位置阈值中的至少一个之后的期间，监测最大和最小进气氧浓度。当EGR阀位置已经越过低/高位置/位置阈值并且最大和最小氧气浓度之间的差小于相应的差值阈值时，检测进气氧传感器的故障。可以设置故障指示灯（MIL）来指示故障。侵入式技术是额外地或替代实现的，例如对非侵入性技术的验证或备份的一部分。

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