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21.发明申请公开(公告)号：US20160109420A1
公开(公告)日：2016-04-21
申请号：US14882807
申请日：2015-10-14
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Kenji Furui , Toru Kidokoro , Taiga Hagimoto , Arifumi Matsumoto , Akifumi Uozumi
IPC: G01N33/00
CPC classification number: G01N33/0037 , F01N3/2066 , F01N11/00 , F01N13/0093 , F01N2550/05 , F01N2560/026 , F01N2610/02 , F01N2900/1621 , F01N2900/1814 , F01N2900/1818 , F01N2900/1821 , G01N33/0073 , Y02T10/24 , Y02T10/47
Abstract: When individually controlling a plurality of supply valves is not available, an object of the invention is to determine which of the plurality of supply valves is abnormal with high accuracy, while suppressing a cost increase. A first supply valve, a first selective reduction NOx catalyst, a second supply valve, a second selective reduction NOx catalyst and a NOx sensor are sequentially provided in an exhaust conduit. With a view to identifying which of abnormality of the first supply valve and abnormality of the second supply valve, an instruction is given to the first supply valve and the second supply valve to increase a supply amount of a reducing agent. This identification is based on a NOx concentration detected by the NOx sensor after elapse of a first specified time duration since an instruction time point that is a time point when this instruction is given.
Abstract translation: 当单独控制多个供给阀不可用时，本发明的目的是在抑制成本增加的同时，以高精度确定多个供给阀中的哪一个异常。 第一供给阀，第一选择还原NOx催化剂，第二供给阀，第二选择还原NOx催化剂和NOx传感器依次设置在排气导管中。 为了识别第一供给阀的异常和第二供给阀的异常，向第一供给阀和第二供给阀指示增加还原剂的供给量。 该识别基于从作为该指示的时间点的指示时间点开始经过第一指定持续时间之后由NOx传感器检测到的NOx浓度。
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公开(公告)号：US09261001B2
公开(公告)日：2016-02-16
申请号：US14424144
申请日：2013-12-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Arifumi Matsumoto , Toru Kidokoro , Taiga Hagimoto , Kazuya Takaoka , Hirokazu Nishijima , Yuki Terui , Akifumi Uozumi
CPC classification number: F01N3/2066 , B01D53/9404 , B01D53/9495 , B01D2251/2067 , F01N3/035 , F01N3/106 , F01N3/208 , F01N11/00 , F01N2550/02 , F01N2550/03 , F01N2550/05 , F01N2560/021 , F01N2560/026 , F01N2610/02 , F01N2610/1453 , F01N2900/1402 , F01N2900/1602 , F01N2900/1616 , F01N2900/1621 , F01N2900/1622 , F01N2900/1806 , Y02A50/2325 , Y02T10/24 , Y02T10/47
Abstract: In a failure determination system that performs failure determination of an exhaust gas purification apparatus having a NOx selective catalytic reduction catalyst (NOx catalyst) that is disposed in an exhaust passage of an internal combustion engine and uses ammonia as a reducing agent, the failure determination of the exhaust gas purification apparatus is performed by a failure determination unit, based on a detected value of a NOx sensor that detects NOx in exhaust gas. Then, based on an adsorption amount difference at assumed failure that is the difference between an ammonia equilibrium adsorption amount in the NOx catalyst in an equilibrium state of ammonia adsorption, assuming that the exhaust gas purification apparatus is in a predefined failure state, and an actual ammonia adsorption amount in the NOx catalyst, the failure determination itself by the failure determination unit is inhibited or the use of the NOx sensor in the failure determination is restricted. Accordingly, in the failure determination system of exhaust gas purification apparatus having the NOx selective catalytic reduction catalyst, erroneous determinations at the time of failure determination are suppressed, thereby further improving the accuracy of the failure determination.
Abstract translation: 在具有设置在内燃机的排气通路中并使用氨作为还原剂的NOx选择性催化还原催化剂（NOx催化剂）的排气净化装置的故障判定系统中，故障判定系统， 废气净化装置由故障判定部基于检测排气中的NOx的NOx传感器的检测值进行。 然后，假设假设故障时的吸附量差异为氨吸附平衡状态下的NOx催化剂中的氨平衡吸附量之间的差异，假设废气净化装置处于预定的失效状态， NOx催化剂中的氨吸附量，故障判定单元的故障判定本身被抑制，或者在故障判定中使用NOx传感器受到限制。 因此，在具有NOx选择催化还原催化剂的排气净化装置的故障判定系统中，抑制故障判定时的错误判定，进一步提高故障判定的准确性。
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公开(公告)号：US20150226105A1
公开(公告)日：2015-08-13
申请号：US14613816
申请日：2015-02-04
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Koji Hagiwara , Toru Kidokoro , Yasushi Iwazaki
IPC: F01N11/00
CPC classification number: F01N11/007 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/2066 , F01N13/009 , F01N2550/02 , Y02T10/20 , Y02T10/47
Abstract: An object of the present invention is to detect an abnormality in an exhaust gas purification apparatus having an NSR catalyst and an SCR catalyst disposed on a downstream side of the NSR catalyst more favorably. Air-fuel ratio reduction control is executed to reduce NOx occluded to the NSR catalyst when an integrated value of an amount of NOx flowing into the NSR catalyst reaches an upper limit value of an amount of NOx that can be occluded to the NSR catalyst in a normal condition. It is determined whether or not the exhaust gas purification apparatus is in an abnormal state on the basis of a NOx purification ratio of the exhaust gas purification apparatus calculated at this time.
Abstract translation: 本发明的目的是更有利地检测具有NSR催化剂和设置在NSR催化剂的下游侧的SCR催化剂的废气净化装置的异常。 执行空燃比降低控制，以当流入NSR催化剂的NOx的量的积分值达到可以阻塞在NSR催化剂中的NOx的量的上限值时，可以减少吸入NSR催化剂的NOx 正常状况 基于此时计算出的废气净化装置的NOx净化率，判定废气净化装置是否处于异常状态。
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24.发明授权公开(公告)号：US08725387B2
公开(公告)日：2014-05-13
申请号：US13871249
申请日：2013-04-26
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura , Hiroshi Sawada , Toru Kidokoro
IPC: B60T7/12
CPC classification number: F02D41/00 , F02D41/0042 , F02D41/0085 , F02D41/1454 , F02D41/2441 , F02D41/2454
Abstract: An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.
Abstract translation: 一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置，作为空燃比之差变大或变小的不平衡确定参数变大，并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果，气缸之间的燃料比不平衡。 确定装置计算净化校正系数，其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化，同时蒸发的燃料气体被引入进气通道中，并且校正燃料 喷射量与净化校正系数FPG。
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公开(公告)号：US11922432B2
公开(公告)日：2024-03-05
申请号：US17692311
申请日：2022-03-11
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Taiga Yamada , Toru Kidokoro , Takao Iura , Takashi Shibata
IPC: G06Q30/018 , G06Q50/26
CPC classification number: G06Q30/018 , G06Q50/26
Abstract: An information collection server obtains relevant information relating to legislation, regulations, or standards (vehicle emissions control) from an external server group and a local server and provides the obtained relevant information to an information processing server. When the information processing server receives the relevant information from the information collection server, it performs conversion processing on each piece of information included in the relevant information in accordance with each piece of information to convert each piece of information into an index relating to a degree of influence on revision of the emissions control. The information processing server provides each resultant index to a prediction creation server. When the prediction creation server receives each resultant index from the information processing server, it predicts a stage of revision of the emissions control based on each index.
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Patent Agency Ranking
公开(公告)号：US10753261B2
公开(公告)日：2020-08-25
申请号：US16218669
申请日：2018-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru Kidokoro , Makoto Ogiso , Takeru Shirasawa , Kenji Furui , Kazuya Takaoka
Abstract: In the abnormality diagnosis device which carries out an abnormality diagnosis of the reducing agent adding device by obtaining a diagnostic parameter which is a parameter correlated with an amount of pressure drop in a reducing agent passage in the case where, from a state in which an addition valve has been closed and in which a voltage to be applied to a pump is controlled to a diagnostic voltage so that the pressure in the reducing agent passage becomes a predetermined pressure, the addition valve is made to open in a state where the voltage to be applied to the pump is maintained at the diagnostic voltage, and by making a comparison between the diagnostic parameter and a predetermined threshold value, the abnormality diagnosis is carried out by using the diagnostic parameter or the predetermined threshold value which is corrected based on the pump discharge capacity of the pump.
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公开(公告)号：US10711678B2
公开(公告)日：2020-07-14
申请号：US16218669
申请日：2018-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru Kidokoro , Makoto Ogiso , Takeru Shirasawa , Kenji Furui , Kazuya Takaoka
Abstract: In the abnormality diagnosis device which carries out an abnormality diagnosis of the reducing agent adding device by obtaining a diagnostic parameter which is a parameter correlated with an amount of pressure drop in a reducing agent passage in the case where, from a state in which an addition valve has been closed and in which a voltage to be applied to a pump is controlled to a diagnostic voltage so that the pressure in the reducing agent passage becomes a predetermined pressure, the addition valve is made to open in a state where the voltage to be applied to the pump is maintained at the diagnostic voltage, and by making a comparison between the diagnostic parameter and a predetermined threshold value, the abnormality diagnosis is carried out by using the diagnostic parameter or the predetermined threshold value which is corrected based on the pump discharge capacity of the pump.
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公开(公告)号：US10458306B2
公开(公告)日：2019-10-29
申请号：US15809041
申请日：2017-11-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuya Takaoka , Toru Kidokoro
Abstract: An object is to prevent a wrong diagnosis from being made in an abnormality diagnosis apparatus for an exhaust gas purification system including a filter and a PM sensor. After sensor regeneration is performed, the application of voltage to the PM sensor is started, and thereafter abnormality diagnosis of the PM sensor is performed based on whether or not a signal is output from the PM sensor. Abnormality diagnosis of the filter is performed based on whether or not the output value of the PM sensor reaches a predetermined abnormality criterion value. If the output value of the PM sensor reaches the predetermined abnormality criterion value before a predetermined diagnosis completion time after the abnormality diagnosis of the PM sensor, the filter is diagnosed as abnormal, and the application of voltage to the PM sensor is stopped at that time.
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公开(公告)号：US10323596B2
公开(公告)日：2019-06-18
申请号：US15536938
申请日：2015-11-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi Miyamoto , Toru Kidokoro , Yasushi Iwazaki , Kenji Suzuki
Abstract: An oil dilution rate calculation system of an internal combustion engine acquires a blowby gas flow ratio showing the ratio of the flow of blowby gas to the flow of gas to the combustion chamber and an output current of the air-fuel ratio sensor during fuel cut control in which the internal combustion engine stops the feed of fuel to the combustion chamber and at a plurality of points of time of different flows of blowby gas passing through the blowby gas passage and flowing to the downstream side of the throttle valve in the intake passage, and calculate an oil dilution rate based on the acquired blowby gas flow ratio and output current.
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公开(公告)号：US10287956B2
公开(公告)日：2019-05-14
申请号：US15502912
申请日：2015-08-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hirokazu Nishijima , Toru Kidokoro , Makoto Ogiso , Kazuya Takaoka
Abstract: In a failure diagnosis apparatus that carries out standard diagnosis processing in which a failure of the particulate filter is diagnosed by making a comparison between an output value of the PM sensor at the time when a predetermined period of time has passed from a point in time at which sensor regeneration processing for removing the particulate matter deposited on an insulation layer of the PM sensor has ended, and a predetermined threshold value, the standard diagnosis processing is carried out in the case where rich spike processing according to the in-cylinder rich control is not carried out during the predetermined period of time, whereas the rich spike processing according to the in-cylinder rich control is carried out during the predetermined period of time, the standard diagnosis processing is not carried out.
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