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公开(公告)号：US20230399970A1
公开(公告)日：2023-12-14
申请号：US18329624
申请日：2023-06-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru YAEO , Yoshifumi MATSUDA , Masashi HAKARIYA , Atsushi MORIKAWA , Ikuo HODA , Noriyasu ADACHI , Masanori HAYASHI , Kenji IGAWA
CPC classification number: F01N11/005 , F02D41/0235 , F02D2200/0802
Abstract: A controller for an internal combustion engine is configured to execute a determination process that determines that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold, and an anomaly diagnosing process that determines that an exhaust purification device is in a detached state when the determination process determines that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively. The controller is configured to interrupt the determination process when the upstream-side temperature increases within a determination period.
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公开(公告)号：US20210180488A1
公开(公告)日：2021-06-17
申请号：US17085147
申请日：2020-10-30
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noriyasu ADACHI , Noriyasu KOBASHI , Yusuke SAITO
Abstract: An exhaust purification system includes a filter, an oxygen supply device, and a controller. The filter is configured to trap particulate matters contained in exhaust gas of an engine. The oxygen supply device is configured to supply oxygen contained in intake air of the engine to the filter. The controller is configured to execute filter regeneration processing to oxidize and remove the particulate matters deposited on the filter. The filter regeneration processing includes regeneration processing during an engine stop that is executed during a shut-down of the engine. In the regeneration processing during the engine stop, a future temperature of the filter is calculated. Then, an operation amount of the oxygen supply device is variably set based on a result of comparing the future temperature with an upper limit temperature of the filter.
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公开(公告)号：US20150308358A1
公开(公告)日：2015-10-29
申请号：US14693253
申请日：2015-04-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yosuke MATSUMOTO , Yasuhiro KUZE , Noriyasu ADACHI , Yusuke SAITO , Satoru TANAKA
CPC classification number: F02D41/0007 , F02B37/002 , F02B37/127 , F02B37/16 , F02B37/18 , F02B37/186 , F02B2037/162 , F02D41/22 , F02D2200/0406 , Y02T10/144 , Y02T10/40
Abstract: A time point t0 represents a time point when a turbocharged engine is brought into a decelerating state, and an opening degree of a throttle valve is decreased. A time point t1 represents a time point when an opening command to an ABV is issued. When the ABV has an abnormality, and when a WGV is stuck open, a turbocharging pressure before the time point t0 shows a tendency to fall below a target turbocharging pressure, and a turbocharging pressure after the time point t1 reduces slowly to approach a predetermined pressure. When the WGV is stuck closed, a turbocharging pressure before the time point t0 shows a tendency to exceed the target turbocharging pressure, and the turbocharging pressure after the time point t1 reduces with vigor to approach the predetermined pressure.
Abstract translation: 时间点t0表示涡轮增压发动机处于减速状态的时间点，节流阀的开度减小。 时间点t1表示发出对ABV的打开命令的时间点。 当ABV发生异常时，当WGV卡死时，在时刻t0之前的涡轮增压压力显示出低于目标涡轮增压压力的倾向，并且在时间点t1之后的涡轮增压压力缓慢降低以接近预定压力 。 当WGV被卡闭时，在时间点t0之前的涡轮增压压力显示出超过目标涡轮增压压力的倾向，并且时间点t1之后的涡轮增压压力随着活度而降低到接近预定压力。
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公开(公告)号：US20230399971A1
公开(公告)日：2023-12-14
申请号：US18329708
申请日：2023-06-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru YAEO , Yoshifumi MATSUDA , Masashi HAKARIYA , Atsushi MORIKAWA , Ikuo HODA , Noriyasu ADACHI , Masanori HAYASHI , Kenji IGAWA
CPC classification number: F01N11/005 , F02D41/0235
Abstract: A controller for an internal combustion engine is configured to execute a determination process and an anomaly diagnosing process. The determination process is a process of determining that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold. The anomaly diagnosing process is a process of determining that an exhaust purification device is in a detached state when it is determined in the determination process that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively.
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公开(公告)号：US20180306069A1
公开(公告)日：2018-10-25
申请号：US15914580
申请日：2018-03-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noriyasu ADACHI , Keisuke SASAKI , Shigehiro SUGIHIRA , Takayoshi KAWAI , Shinji SADAKANE , Hiroyuki SUGIHARA , Kaoru OHTSUKA
IPC: F01L1/047
Abstract: Provided is a control device for an internal combustion engine equipped with a cam switching device including a cam groove provided on the outer peripheral surface of a camshaft and an electromagnetic solenoid type actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The control device is configured, in causing the cam switching device to perform a cam switching operation, to perform energization of the actuator such that the engagement pin is seated on a forward outer peripheral surface, and to more lower, when an electric current (coil current) flowing through the actuator as a result of the energization is greater, an average electric voltage per unit time applied to the actuator in protruding the engagement pin toward the cam groove from the forward outer peripheral surface.
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Patent Agency Ranking
公开(公告)号：US20180052077A1
公开(公告)日：2018-02-22
申请号：US15676093
申请日：2017-08-14
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noriyasu ADACHI , Tomoya OTA , Hiroshi WATANABE , Yoshio UENO , Takayoshi KAWAI , Aya YAMADA
CPC classification number: G01M15/046 , F02B75/045 , F02B77/083 , F02D15/02 , F02D41/0087 , F02D41/123 , F02D41/1497 , F02D41/221 , F02D2200/101 , Y02T10/40
Abstract: An object is to carry out an abnormality diagnosis for a variable compression ratio mechanism without adding any special hardware configuration for estimating a compression ratio. An abnormality diagnostic device for a variable compression ratio mechanism adapted to be applied to an internal combustion engine comprises a controller configured to calculate a predetermined rotational speed difference which is a rotational speed difference, between an engine rotational speed at a predetermined crank angle before or after compression top dead center and an engine rotational speed in the vicinity of the compression top dead center for a predetermined cylinder at the time of carrying out fuel cut processing, set a reference range of the predetermined rotational speed difference, and make a diagnosis that abnormality has occurred in the variable compression ratio mechanism when the predetermined rotational speed difference is out of the reference range.
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公开(公告)号：US20200256238A1
公开(公告)日：2020-08-13
申请号：US16784738
申请日：2020-02-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noriyasu KOBASHI , Noriyasu ADACHI , Yusuke SAITO
Abstract: An exhaust purification system of an internal combustion engine comprises a filter 23 arranged in an exhaust passage 23 of an internal combustion engine in which a plurality of cylinders 61, 62, 63, 64 cooled by cooling water are provided and trapping particulate matter in exhaust gas, a wall temperature calculation part 51 configured to calculate or detect wall temperatures of a predetermined number of equal to or more than two cylinders among the plurality of cylinders, and a PM amount calculation part 52 configured to calculate an amount of particulate matter discharged from the plurality of cylinders to the exhaust passage based on the wall temperatures calculated or detected by the wall temperature calculation part.
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公开(公告)号：US20180230869A1
公开(公告)日：2018-08-16
申请号：US15888563
申请日：2018-02-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigehiro SUGIHIRA , Noriyasu ADACHI , Keisuke SASAKI , Takayoshi KAWAI , Kaoru OTSUKA , Shinji SADAKANE , Hiroyuki SUGIHARA
Abstract: In a system that selects a large-cam as a driving cam at a time of a start of an engine, when an engine stop request is output, it is determined whether there is a small-cam cylinder for which a small-cam is selected as the driving cam. In a case where it is determined that there is a small-cam cylinder, a switching command for switching the driving cam from the small-cam to the large-cam is output. When an engine start request is output, the above determination is performed again. In a case where it is determined that there is a small-cam cylinder, the switching command is output to all solenoid actuators again. In addition, the drive of the fuel injector is suspended until the switching operation of the driving cam is completed for all cylinders.
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公开(公告)号：US20180202329A1
公开(公告)日：2018-07-19
申请号：US15810306
申请日：2017-11-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kaoru OHTSUKA , Hiroyuki SUGIHARA , Shinji SADAKANE , Noriyasu ADACHI , Shigehiro SUGIHIRA , Keisuke SASAKI , Takayoshi KAWAI
CPC classification number: F01L13/0036 , F01L1/047 , F01L2013/0052 , F01L2013/101 , F02B75/02 , F02B75/20 , F02B2075/027 , F02B2075/1816 , F02D13/0226 , F02D13/08 , F02D41/042 , F02D2041/001 , Y02T10/18
Abstract: When a stop request to the engine is issued, it is determined whether or not all of the drive cams are large cams. When it is determined that at least one of the small cams is included in the drive cams, the engine is continued to drive for a while and a switch control for switching the drive cams from the small cams to the large cams is executed within the duration. A self-holding type solenoid is used to switch between the small cams and the large cams. In the switch control, a permission to stop the engine is output at a timing when the “pin protrudable section” of the final cylinder #2 has elapsed.
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公开(公告)号：US20160369712A1
公开(公告)日：2016-12-22
申请号：US15113241
申请日：2014-12-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yosuke MATSUMOTO , Noriyasu ADACHI
CPC classification number: F02D41/0002 , F02D41/0052 , F02D41/0057 , F02D41/3029 , F02D41/3064 , F02D41/307 , F02D2041/0017 , F02D2250/21 , F02D2250/36 , F02M26/45 , F02M26/51 , F02M26/53 , F02P5/1504 , Y02T10/42 , Y02T10/47
Abstract: In an internal combustion engine an air-fuel ratio is switched between at least two target values without generating torque fluctuations, while a deterioration in fuel consumption performance and exhaust performance is suppressed. When a condition for switching a combustion mode from stoichiometric combustion to lean combustion and a condition that the amount of change in a target torque is less than or equal to a predetermined value are satisfied, a target EGR rate is increased towards an EGR limit prior to switching the target air-fuel ratio. The target air-fuel ratio is maintained at the stoichiometric air-fuel ratio until the target EGR rate reaches the EGR limit, and in response to the target EGR rate reaching the EGR limit, the target air-fuel ratio is changed towards a lean air-fuel ratio.
Abstract translation: 在内燃机中，在不产生转矩波动的情况下，在至少两个目标值之间切换空燃比，同时抑制燃料消耗性能和排气性能的劣化。 当将燃烧模式从化学计量燃烧切换到稀燃时，满足目标转矩变化量小于或等于预定值的条件时，目标EGR率朝向EGR极限前进 切换目标空燃比。 目标空燃比维持在化学计量空燃比直到目标EGR率达到EGR极限，并且响应于目标EGR率达到EGR极限，目标空燃比变为稀空气 - 燃料比。
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