公开(公告)号：US09291085B2

公开(公告)日：2016-03-22

申请号：US14281704

申请日：2014-05-19

申请人： Kawasaki Jukogyo Kabushiki Kaisha

发明人： Daisuke Yanase ,  Junji Tamura ,  Kouzou Suzuki ,  Takashi Abe ,  Yoshinobu Mori

IPC分类号： F01N3/00 ,  F01N3/02 ,  F01N3/10 ,  F01N3/20 ,  F01N11/00 ,  F02D41/02 ,  F02D41/14

CPC分类号： F01N11/007 ,  F01N2430/06 ,  F01N2550/02 ,  F01N2560/14 ,  F02D41/0295 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1474 ,  F02D2200/0816 ,  Y02T10/47

摘要： A method of estimating an ideal air-fuel ratio in an internal combustion engine, comprises receiving an output of an upstream air-fuel ratio sensor and an output of a downstream air-fuel ratio sensor, the upstream air-fuel ratio sensor being attached to an exhaust gas passage such that it is positioned upstream of a catalyst provided in the exhaust gas passage to purify an exhaust gas, the downstream air-fuel ratio sensor being attached to the exhaust gas passage such that it is positioned downstream of the catalyst; detecting a state in which the catalyst does not store or release oxygen based on the output of the downstream air-fuel ratio sensor; and deciding as an estimated ideal air-fuel ratio in the internal combustion engine an air-fuel ratio detected by the upstream air-fuel ratio sensor when the state in which the catalyst does not store or release oxygen is detected.

摘要翻译： 一种估计内燃机中的理想空燃比的方法，包括接收上游空燃比传感器的输出和下游空燃比传感器的输出，上游空燃比传感器附接到 排气通道，其设置在排气通道中设置的催化剂的上游，以净化废气，所述下游空燃比传感器附接到排气通道，使得其位于催化剂的下游; 基于下游空燃比传感器的输出检测催化剂不储存或释放氧气的状态; 并且当检测到催化剂不储存或释放氧气的状态时，确定内燃机中由上游空燃比传感器检测的空燃比的估计理想空燃比。

公开(公告)号：US09279382B2

公开(公告)日：2016-03-08

申请号：US14036963

申请日：2013-09-25

申请人： Takeshi Genko

发明人： Takeshi Genko

IPC分类号： F02D43/04 ,  F02D41/12 ,  F02D41/14 ,  F02D41/22

CPC分类号： F02D43/04 ,  F02D41/123 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/1495 ,  F02D41/222 ,  Y10S903/902

摘要： A vehicle includes an internal combustion engine, an air-fuel ratio sensor provided in an exhaust passage of the internal combustion engine, and a controller. The controller is configured to diagnose a responsiveness of the air-fuel ratio sensor on the basis of an output voltage of the air-fuel ratio sensor in a predefined period. The period is a period over which exhaust gas goes through the air-fuel ratio sensor during the internal combustion engine is rotating without fuel injection.

摘要翻译： 车辆包括内燃机，设置在内燃机的排气通道中的空燃比传感器和控制器。 控制器被配置为基于空燃比传感器的输出电压在预定时间段内诊断空燃比传感器的响应性。 该期间是在内燃机在没有燃料喷射的情况下旋转时废气通过空燃比传感器的时段。

公开(公告)号：US20130206596A1

公开(公告)日：2013-08-15

申请号：US13761542

申请日：2013-02-07

申请人： DENSO CORPORATION

发明人： Hiroshi KATSURAHARA ,  Shingo NAKATA ,  Mikiyasu MATSUOKA

IPC分类号： G01N27/407

CPC分类号： G01N27/407 ,  F01N11/007 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2900/1402 ,  F02D41/0235 ,  F02D41/123 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/1495 ,  Y02T10/47

摘要： A deterioration diagnosis device, which performs a deterioration diagnosis of a catalyst, includes an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas such that an output value of the exhaust-gas sensor is used at least in the deterioration diagnosis. The deterioration diagnosis device further includes the constant current supply portion which applies a voltage to a sensor element of the exhaust-gas sensor to change an output characteristic of the exhaust-gas sensor, a response-time detection portion which detects a response time required for the output value of the exhaust-gas sensor to change from a rich threshold to a lean threshold, a response-time correction portion which controls the constant current supply portion to change the output characteristic of the exhaust-gas sensor so as to shorten the response time when the response time is longer than a predetermined reference time.

摘要翻译： 执行催化剂劣化诊断的劣化诊断装置包括排气传感器，其设置在排气的流动方向上的催化剂下游，使得废气传感器的输出值至少使用在劣化中 诊断。 劣化诊断装置还包括对排气传感器的传感器元件施加电压以改变排气传感器的输出特性的恒流供给部，响应时间检测部，其检测所需的响应时间 排气传感器的输出值从丰富阈值变化到稀薄阈值;响应时间校正部，其控制恒流供给部，改变排气传感器的输出特性，以缩短响应 当响应时间长于预定的参考时间时。

公开(公告)号：US20130180509A1

公开(公告)日：2013-07-18

申请号：US13352885

申请日：2012-01-18

申请人： Imad Hassan Makki ,  Pankaj Kumar ,  James Michael Kerns ,  Hassene Jammoussi

发明人： Imad Hassan Makki ,  Pankaj Kumar ,  James Michael Kerns ,  Hassene Jammoussi

IPC分类号： F02D41/04 ,  G01N33/00

CPC分类号： F01N11/00 ,  F02D41/1441 ,  F02D41/1474 ,  F02D41/1495 ,  F02D2041/1431 ,  F02D2041/286

摘要： A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on characteristics of a distribution of extreme values of a plurality of sets of lambda differentials collected during selected operating conditions. In this way, the exhaust gas sensor may be monitored in a non-intrusive manner.

摘要翻译： 提供一种用于监测联接在发动机排气中的废气传感器的方法。 在一个实施例中，该方法包括基于在选择的操作条件期间收集的多组λ差分的极值的分布的特性来指示废气传感器劣化。 以这种方式，废气传感器可以以非侵入的方式被监视。

公开(公告)号：US08381567B2

公开(公告)日：2013-02-26

申请号：US12611237

申请日：2009-11-03

申请人： Kersten Wehmeier ,  Michael Fey ,  Andreas Koring

发明人： Kersten Wehmeier ,  Michael Fey ,  Andreas Koring

IPC分类号： G01M15/10 ,  F02D41/22

CPC分类号： F02D41/1474 ,  F02D41/1495 ,  F02D41/222 ,  F02D2041/2051 ,  F02D2041/2058 ,  G01M15/104 ,  Y02T10/40

摘要： A procedure for detecting manipulations at lambda comprises the following steps; the lambda probe is excited by at least one electric excitation signal; at least one electric response signal of the probe is detected; the at least one response signal is compared to at least one default electric response signal that characterizes a not manipulated probe; the deviation of the detected at least one electric response signal from the at least one default electric response signal is used for detecting a manipulation of the probe. A device for detecting manipulations at lambda probes characterized by a switch assembly, with which the probe can be impinged with an electric excitation signal, in particular a step-wise electric excitation, preferably with a current impulse, by a evaluation switch device for evaluating a response signal, in particular the probe voltage and for comparing the excitation signal with the response signal and for assuming a manipulation in the case of a deviation of the response signal from a response signal that characterizes a not manipulated probe.

摘要翻译： 用于检测λ的操作的过程包括以下步骤： λ探针由至少一个电激励信号激发; 检测探头的至少一个电响应信号; 将至少一个响应信号与表征未被操纵的探针的至少一个默认电响应信号进行比较; 检测到的至少一个电响应信号与至少一个默认电响应信号的偏差用于检测探头的操作。 一种用于检测在λ探针上的操作的装置，其特征在于开关组件，探针可以通过评估开关装置用电激励信号，特别是逐步电激励，优选地以电流脉冲冲击，用于评估 响应信号，特别是探针电压，并用于将激励信号与响应信号进行比较，并且用于在响应信号与表征未操纵的探针的响应信号偏离的情况下进行操作。

公开(公告)号：US08224557B2

公开(公告)日：2012-07-17

申请号：US12687484

申请日：2010-01-14

申请人： Sai S. V. Rajagopalan ,  Jason Meyer ,  Shawn W. Midlam-Mohler ,  Kenneth P. Dudek ,  Stephen Yurkovich ,  Yann G. Guezennec

发明人： Sai S. V. Rajagopalan ,  Jason Meyer ,  Shawn W. Midlam-Mohler ,  Kenneth P. Dudek ,  Stephen Yurkovich ,  Yann G. Guezennec

IPC分类号： F02D41/14

CPC分类号： F01N13/107 ,  F01N9/00 ,  F02D41/1441 ,  F02D41/1474 ,  F02D2041/1437 ,  F02D2200/0402 ,  Y02T10/47

摘要： A system includes a cylinder equivalence ratio (EQR) module, a location estimation module, a sensor module, and a fuel control module. The cylinder EQR module determines a first EQR corresponding to a first exhaust gas expelled from a first cylinder and determines a second EQR corresponding to a second exhaust gas expelled from a second cylinder. The location estimation module determines when the first and second exhaust gases mix in an exhaust manifold to form a third exhaust gas having a third EQR. The sensor module estimates an EQR of a fourth exhaust gas based on the third EQR. The fourth exhaust gas is located at an oxygen sensor in the exhaust manifold. The fuel control module controls an amount of fuel supplied to an engine based on a difference between the estimated EQR and an EQR corresponding to measurements from the oxygen sensor.

摘要翻译： 系统包括气缸当量比（EQR）模块，位置估计模块，传感器模块和燃料控制模块。 气缸EQR模块确定对应于从第一气缸排出的第一废气的第一EQR，并且确定对应于从第二气缸排出的第二废气的第二EQR。 位置估计模块确定第一和第二废气何时在排气歧管中混合以形成具有第三EQR的第三废气。 传感器模块基于第三个EQR估计第四废气的EQR。 第四废气位于排气歧管中的氧传感器。 燃料控制模块基于估计的EQR和对应于来自氧传感器的测量值的EQR之间的差来控制供应给发动机的燃料量。

公开(公告)号：US08087231B2

公开(公告)日：2012-01-03

申请号：US12068493

申请日：2008-02-07

申请人： Yuri Sakamoto ,  Masahiko Kimura

发明人： Yuri Sakamoto ,  Masahiko Kimura

IPC分类号： F01N3/00

CPC分类号： F02D41/1456 ,  F01N3/101 ,  F01N11/007 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/14 ,  F02D41/025 ,  F02D41/1441 ,  F02D41/1474 ,  F02D41/1495 ,  F02D41/22 ,  F02D41/2454 ,  Y02T10/22 ,  Y02T10/47

摘要： A main feedback control based on an output of an upstream sensor, and a sub-feedback control based on an output of a downstream sensor are executed. A specified fuel disturbance is inputted and an output of the downstream sensor is measured to derive a characteristic value. Based on the characteristic value, it is determined whether a purifying capacity of the exhaust gas purifying system including the catalyst, the upstream sensor, and the downstream sensor is deteriorated.

摘要翻译： 执行基于上游传感器的输出的主反馈控制和基于下游传感器的输出的子反馈控制。 输入指定的燃料扰动，并测量下游传感器的输出以导出特征值。 基于特征值，确定包括催化剂，上游传感器和下游传感器的废气净化系统的净化能力是否劣化。

公开(公告)号：US07980121B2

公开(公告)日：2011-07-19

申请号：US12203398

申请日：2008-09-03

申请人： Mikiyasu Matsuoka ,  Tomoo Kawase ,  Eiichi Kurokawa

发明人： Mikiyasu Matsuoka ,  Tomoo Kawase ,  Eiichi Kurokawa

IPC分类号： G01M15/10

CPC分类号： G01N33/0037 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/1495 ,  F02D41/222 ,  F02D41/2474 ,  Y02A50/245

摘要： The degradation simulator is used for a gas sensor including a sensor element having a solid electrolyte layer and a pair of electrodes located opposite to each other across from the solid electrolyte layer, the sensor element outputting a sensor output signal having a value depending on concentration of a specific gas in the ambient gas. The degradation simulator includes a first setting function of enabling variably setting a time constant delay which appears on the sensor output signal when concentration of the specific gas changes, a second setting function of enabling variably setting a dead time delay which appears on the sensor output signal when concentration of the specific gas changes, and an adding function of adding at least one of the time constant delay and dead time delay to the sensor output signal in order to generate a pseudo-degraded sensor output signal in accordance with an external instruction.

摘要翻译： 降解模拟器用于气体传感器，其包括具有固体电解质层的传感器元件和在固体电解质层之间彼此相对定位的一对电极，传感器元件输出具有取决于浓度的值的传感器输出信号 环境气体中的特定气体。 降级模拟器包括第一设置功能，其能够可变地设置当特定气体的浓度改变时出现在传感器输出信号上的时间常数延迟，允许可变地设置出现在传感器输出信号上的死区延迟的第二设置功能 当特定气体的浓度变化时，以及将至少一个时间常数延迟和死区时间延迟添加到传感器输出信号中的加法功能，以便根据外部指令产生伪劣化的传感器输出信号。

公开(公告)号：US07900616B2

公开(公告)日：2011-03-08

申请号：US12292217

申请日：2008-11-13

申请人： Jonathan Saunders

发明人： Jonathan Saunders

IPC分类号： F02D41/00

CPC分类号： F02D41/1495 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/2458 ,  F02D2041/1432 ,  G01N33/0063

摘要： An internal combustion engine includes an exhaust system, an oxygen sensor in the exhaust system and a sensor malfunction monitor. The sensor malfunction monitor measures a rate of change of a signal from the sensor on detecting a turning point of the signal and detects a malfunction when a rate of change of the signal exceeds a threshold. Alternatively, the sensor malfunction monitor measures a response time interval starting from a point in time at which a diagnostic function begins to force an air-fuel ratio to change (e.g., from lean-to-rich or rich-to-lean) and ends at a point in time when a turning point of the signal is detected. The sensor malfunction monitor detects a malfunction when the delay time of the response time interval, or average delay time from a plurality of measured response time intervals, exceeds a time threshold.

摘要翻译： 内燃机包括排气系统，排气系统中的氧传感器和传感器故障监视器。 传感器故障监视器在检测到信号的转折点时测量来自传感器的信号的变化率，并且当信号的变化率超过阈值时检测故障。 或者，传感器故障监测器测量从诊断功能开始迫使空燃比改变的时间点（例如，从瘦到丰富或富至贫）的起点的响应时间间隔，并且结束 在检测到信号的转折点的时间点。 当响应时间间隔的延迟时间或多个测量的响应时间间隔的平均延迟时间超过时间阈值时，传感器故障监视器检测故障。

公开(公告)号：US07743607B2

公开(公告)日：2010-06-29

申请号：US11571257

申请日：2005-06-21

申请人： Christophe Colignon

发明人： Christophe Colignon

IPC分类号： F01N3/00

CPC分类号： B01D53/9495 ,  F01N3/023 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N9/002 ,  F01N13/009 ,  F01N2430/04 ,  F01N2430/06 ,  F01N2510/065 ,  F01N2550/04 ,  F01N2570/16 ,  F02B37/00 ,  F02D41/029 ,  F02D41/1474 ,  F02D41/402 ,  Y02A50/2325 ,  Y02T10/44 ,  Y02T10/47

摘要： The invention concerns a system for assisting regeneration of pollution management means (1) associated with oxidation catalyst forming means (2) implementing an oxygen storage capacity (OSC) function, and integrated in an exhaust line of a motor vehicle diesel engine (4), wherein the engine is associated with common ramp means (7) supplying fuel to the cylinders thereof. The invention is characterized in that it comprises means (8) for determining the frequency of the pollution management means regeneration and for comparing same to predetermined threshold values (10), to control the engine (4) in a first lean mixture regeneration operating mode (11) for frequencies less than the threshold values or in a second regeneration operating mode implementing engine operating sequences alternating rich mixture and lean mixture operating phases (12) for frequencies more than the threshold values.

摘要翻译： 本发明涉及一种用于辅助与执行氧储存容量（OSC）功能的氧化催化剂形成装置（2）相关联的污染物管理装置（1）的再生系统，并且集成在机动车柴油发动机（4）的排气管线中， 其中所述发动机与向其气缸供应燃料的公共斜坡装置（7）相关联。 本发明的特征在于它包括用于确定污染管理装置再生的频率并将其与预定阈值（10）进行比较的装置（8），以控制发动机（4）处于第一稀混合再生操作模式 11），或者在第二再生操作模式中，对于超过阈值的频率，实施发动机操作序列交替富混合物和贫混合物操作阶段（12）。