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1. 发明授权

US10570799B2 Purification control device 有权
公开(公告)号：US10570799B2
公开(公告)日：2020-02-25
申请号：US16405087
申请日：2019-05-07
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshinori Hibino , Kentaro Mori
IPC分类号： F01N11/00 , B01D53/94 , F01N9/00 , F01N3/20
摘要： A purification control device (12) controls a urea water injector (5) for supplying urea as a reducing agent to an SCR catalyst (4). The purification control device (12) sets a pre-deterioration maximum occlusion amount based on the SCR catalyst temperature, and estimates the concentration of ammonia discharged from the SCR catalyst (4), as an estimated ammonia concentration, based on upstream NOx concentration information, downstream NOx concentration information, urea injection amount information, the pre-deterioration maximum occlusion amount, and ammonia occlusion amount information. The purification control device (12) acquires downstream ammonia concentration information. When the downstream ammonia concentration is greater than the estimated ammonia concentration, the purification control device (12) decreases the supply amount of urea from the urea water injector (5).

2. 发明授权

US10094261B2 Ammonia occlusion amount estimation device and method, and purification control apparatus and method 有权
公开(公告)号：US10094261B2
公开(公告)日：2018-10-09
申请号：US15170045
申请日：2016-06-01
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshinori Hibino , Ryosuke Ichida , Kentaro Mori
IPC分类号： F01N3/00 , F01N3/10 , F01N3/20 , F01N9/00
摘要： A purification controller 12 is configured to estimate the amount of ammonia occluded (i.e. ammonia occlusion amount) in an SCR catalyst 4, which is arranged in an exhaust pipe 52 of a diesel engine 51 so as to purify NOx in an exhaust gas of the diesel engine 51. More specifically, the purification controller 12 acquires upstream NO concentration data, upstream NO2 concentration data, downstream NOx concentration data, downstream NO2 concentration data and downstream ammonia concentration data. The purification controller 12 further acquires an urea injection amount. Then, the purification controller 12 estimates the ammonia occlusion amount based on the acquired upstream NO concentration data, upstream NO2 concentration data, downstream NOx concentration data, downstream NO2 concentration data and downstream ammonia concentration data, the acquired urea injection amount and reaction formulas for reduction of NOx with the SCR catalyst 4.

3. 发明授权

US09239273B2 Sensor control apparatus and sensor control system 有权
标题翻译：传感器控制装置和传感器控制系统
公开(公告)号：US09239273B2
公开(公告)日：2016-01-19
申请号：US13629451
申请日：2012-09-27
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshinori Hibino
IPC分类号： G01N27/406 , G01M15/10 , F02D41/14 , F02D41/10
CPC分类号： G01M15/104 , F02D41/10 , F02D41/1446 , F02D41/1455 , F02D41/1494 , G01N27/4065 , G01N27/4067
摘要： A CPU (11) of an ECU (5) obtains the present exhaust gas temperature from temperature sensor (3), and calculates the difference with an exhaust gas temperature obtained in a previous computation cycle. When the exhaust gas temperature tends to increase, the absolute value of the difference is equal to or greater than 20° C., and a flag indicating that the processing of correcting a target impedance of a cell (21) of an oxygen sensor (2) is being performed is OFF, the CPU determines that the engine is in a transition period. The CPU then obtains a correction value for the target impedance of the cell of the oxygen sensor on the basis of the exhaust gas temperature. The CPU corrects the target impedance of the cell by the correction value, and feedback-controls electric power supplied to a heater (26) on the basis of the corrected target impedance.
摘要翻译： ECU（5）的CPU（11）从温度传感器（3）获得当前的废气温度，并且计算与先前计算周期中获得的排气温度的差。当废气温度趋于增加时，差的绝对值等于或大于20℃，并且指示校正氧传感器（2）的单元（21）的目标阻抗的处理的标志）正在执行时，CPU确定发动机处于过渡期。然后，CPU基于排气温度获得氧传感器的电池的目标阻抗的校正值。 CPU通过校正值来校正单元的目标阻抗，并且基于校正的目标阻抗反馈控制提供给加热器（26）的电力。

4. 发明授权

US11137332B2 Particulate detection apparatus 有权
公开(公告)号：US11137332B2
公开(公告)日：2021-10-05
申请号：US16505262
申请日：2019-07-08
申请人： NGK SPARK PLUG CO., LTD.
发明人： Takeshi Sugiyama , Yoshinori Hibino
IPC分类号： G01N15/06 , B01D46/44 , B01D46/00 , F01N11/00 , G01N15/00
摘要： A particulate detection apparatus for controlling a particulate sensor which detects the amount of particulates discharged from a filter for collecting particulates contained in exhaust gas. The particulate sensor includes a detection section configured to electrify particulates contained in exhaust gas so as to produce electrified particulates. The particulate detection apparatus includes a period judgment section, an output obtainment section and an anomaly judgment section. The period judgment section judges whether or not the present point in time is within a previously set anomaly determination period just after completing a filter regeneration process. The output obtainment section obtains a sensor output representing the result of detection by the particulate sensor in the case where the present point in time is judged to be within the anomaly determination period. The anomaly judgment section judges whether or not the particulate sensor is anomalous based on the sensitivity characteristic of the sensor output.

5. 发明授权

US10502114B2 Concentration calculation apparatus, concentration calculation system, and concentration calculation method 有权
公开(公告)号：US10502114B2
公开(公告)日：2019-12-10
申请号：US15787984
申请日：2017-10-19
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshihiro Nakano , Yoshinori Hibino
IPC分类号： F01N9/00 , F01N3/20 , F01N3/035 , F01N11/00 , F01N3/08 , F01N3/021
CPC分类号： F01N3/208 , F01N3/021 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N9/002 , F01N11/00 , F01N11/007 , F01N2550/05 , F01N2560/021 , F01N2560/026 , F01N2610/02 , F01N2900/0416 , F01N2900/1402 , Y02T10/24 , Y02T10/47
摘要： A concentration calculation apparatus, system and method which can compute a correction value for correcting an ammonia sensor output at a timing other than the time of fuel cut. A multi-gas sensor control apparatus (9) of a urea SCR system (1) begins recording (storing) a downstream NOx output value Sn and downstream ammonia output value Sa detected by a multi-gas sensor (8) (S120) when the control apparatus determines that a DPF regeneration process is currently being performed (an affirmative determination in S110). The apparatus (9) computes a downstream ammonia converted value Ca using a peak value of the downstream NOx output value Sn (S170), and calculates a Gain correction coefficient based on a comparison of the downstream converted value Ca and the output value Sa (S180). As a result, the Gain correction coefficient can be computed in accordance with the state of the ammonia detection section (202).

6. 发明授权

US09354191B2 Oxygen sensor controlling apparatus, oxygen sensor controlling method and computer readable recording medium 有权
标题翻译：氧传感器控制装置，氧传感器控制方法和计算机可读记录介质
公开(公告)号：US09354191B2
公开(公告)日：2016-05-31
申请号：US13942840
申请日：2013-07-16
申请人： NGK SPARK PLUG CO., LTD.
发明人： Soichi Kawaguchi , Yoshinori Hibino , Ryosuke Ichida
IPC分类号： G01N27/04 , G01N27/409
CPC分类号： G01N27/04 , G01N27/409
摘要： An oxygen sensor controlling apparatus includes: a controller configured to obtain a degradation index of a detection element; obtain a sensor output; detect an internal resistance of the detection element by causing a temporary change between electrodes of the detection element; successively obtain a target resistance value corresponding to the internal resistance using a first sensor output that is a value of the sensor output obtained at a time before or after a period when the temporary change occurs and the degradation index; and feedback control energization of the heater so that the internal resistance becomes the target resistance value.
摘要翻译：氧传感器控制装置包括：控制器，被配置为获得检测元件的劣化指数; 获取传感器输出; 通过使检测元件的电极之间发生暂时的变化来检测检测元件的内部电阻; 使用作为在临时变化发生的时间之前或之后获得的传感器输出的值和劣化指数的第一传感器输出，连续获得与内部电阻对应的目标电阻值; 并且加热器的反馈控制通电使得内部电阻成为目标电阻值。

7. 发明授权

US09068934B2 Gas sensor processing apparatus 有权
标题翻译：气体传感器处理装置
公开(公告)号：US09068934B2
公开(公告)日：2015-06-30
申请号：US13739543
申请日：2013-01-11
申请人： NGK SPARK PLUG CO., LTD.
发明人： Kentaro Mori , Soichi Kawaguchi , Ryosuke Ichida , Yoshinori Hibino
IPC分类号： G01N27/409 , F02D41/14 , G01N27/406
CPC分类号： G01N27/409 , F02D41/042 , F02D41/1455 , F02D41/1494 , F02D41/1495 , G01N27/4065
摘要： A gas sensor processing apparatus (1) which includes voltage shift means (11, 19, S1071) for shifting a detection element voltage VE produced between electrodes (3P, 3N) of a detection element (3) from a pre-shift voltage VE1 to a post-shift voltage VE2; recovery means (11, 19, S1072) for returning the detection element voltage VE from the post-shift voltage VE2 to the pre-shift voltage VE1 after the end of a voltage shift period TS in which the voltage VE is shifted by the voltage shift means; and deterioration index detection means S106-S107 for detecting a deterioration index ID representing the degree of deterioration of the detection element (3) on the basis of a voltage change in the recovery period TK in which the voltage VE is recovered by the recovery means.
摘要翻译：一种气体传感器处理装置（1），包括电压偏移装置（11,19，S1071），用于将检测元件（3）的电极（3P，3N）之间产生的检测元件电压VE从预移位电压VE1移位到移位后电压VE2; 用于在电压VE偏移了电压偏移的电压偏移周期TS结束之后将检测元件电压VE从移位后电压VE2返回到移位前电压VE1的恢复装置（11,19,30-772）手段; 以及劣化指标检测装置S106-S107，用于根据恢复装置恢复电压VE的恢复期TK的电压变化来检测表示检测元件（3）的劣化程度的劣化指数ID。

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