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公开(公告)号：US20220333543A1
公开(公告)日：2022-10-20
申请号：US17713241
申请日：2022-04-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki NOSE , Yuto IKEDA , Takanobu GOTOH
Abstract: A control apparatus for an internal combustion engine performs a first acquisition process for acquiring a first index value corresponding to an integrated amount of intake air during a performance of the fuel cutoff process, and a cancellation process for cancelling the fuel cutoff process when the first index value becomes equal to or larger than a first predetermined value during the performance of the fuel cutoff process. Besides, the control apparatus performs a second acquisition process for acquiring a second index value corresponding to an elapsed time from the end of the fuel cutoff process to the subsequent start of the fuel cutoff process, and a change process for making the first predetermined value smaller when the second index value is small in starting the fuel cutoff process than when the second index value is large in starting the fuel cutoff process.
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公开(公告)号：US20220242389A1
公开(公告)日：2022-08-04
申请号：US17583718
申请日：2022-01-25
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki NOSE , Yuto IKEDA , Takanobu GOTOH
Abstract: An ENG-ECU performs a specific cylinder fuel cutoff process of stopping combustion of an air-fuel mixture in some cylinders out of a plurality of cylinders of an internal combustion engine and a transmission process of transmitting engine operation information on execution of the specific cylinder fuel cutoff process to an HV-ECU. The HV-ECU performs a torque compensation process of compensating for a decrease in engine torque due to execution of the specific cylinder fuel cutoff process using an output torque of a second MG based on the received engine operation information. The ENG-ECU performs a process of starting the specific cylinder fuel cutoff process in a combustion cycle when a waiting time which includes a time until the HV-ECU receives the engine operation information has elapsed after the transmission process has been performed.
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公开(公告)号：US20220080951A1
公开(公告)日：2022-03-17
申请号：US17536099
申请日：2021-11-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki NOSE , Masaaki KOBAYASHI
Abstract: A vehicle includes: a motive power generating device that includes a multi-cylinder engine and outputs driving power to a wheel; an exhaust gas control apparatus including a catalyst that removes harmful components of exhaust gas from the multi-cylinder engine; and a controller. The controller is configured to, upon request for raising the temperature of the catalyst during load operation of the multi-cylinder engine, execute catalyst temperature raising control that involves stopping fuel supply to at least one of cylinders and supplying fuel to the other cylinders than the at least one cylinder, and to control the motive power generating device so as to cover a driving power shortage resulting from execution of the catalyst temperature raising control.
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公开(公告)号：US20210088008A1
公开(公告)日：2021-03-25
申请号：US17113244
申请日：2020-12-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Eiji IKUTA , Yuki NOSE , Yuto IKEDA , Keiichi MYOJO , Yoshiyuki SHOGENJI , Hirokazu ANDO
Abstract: A controller executes a fuel introduction process when stopping combustion in a cylinder under a situation in which a crankshaft is rotating. The fuel introduction process causes a fuel injection valve to inject fuel and causes the fuel to flow out unburned from inside the cylinder to an exhaust passage. The opening degree of an exhaust gas recirculation valve at a point in time when a state in which the execution condition of the fuel introduction process is not satisfied is switched to a state in which the execution condition of the fuel introduction process is satisfied is a preliminary opening degree. During the execution of the fuel introduction process, the recirculation valve controlling section causes the opening degree of the exhaust gas recirculation valve to be smaller than the preliminary opening degree.
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5.发明申请公开(公告)号：US20190101073A1
公开(公告)日：2019-04-04
申请号：US16140794
申请日：2018-09-25
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Misako BAN , Keiichi MYOJO , Yoshiyuki SHOGENJI , Yuki NOSE , Eiji IKUTA
Abstract: When a purge valve opens, a CPU calculates a purge concentration learning value based on an air-fuel ratio detected by an air-fuel ratio sensor. Additionally, under the condition that a temperature increase request of a three-way catalyst is generated, the CPU performs dither control that sets one of a plurality of cylinders as a rich combustion cylinder, which is richer than a theoretical air-fuel ratio, and the remaining cylinders as lean combustion cylinders, which are leaner than the theoretical air-fuel ratio. When the dither control is performed, the CPU forbids the update of the purge concentration learning value.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20190048815A1
公开(公告)日：2019-02-14
申请号：US16058127
申请日：2018-08-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Keiichi MYOJO , Yuki NOSE , Eiji IKUTA
CPC classification number: F02D41/025 , F01N3/101 , F01N9/00 , F01N2260/04 , F01N2430/06 , F01N2560/025 , F01N2570/04 , F01N2900/1404 , F01N2900/1612 , F02D41/0035 , F02D2200/021 , F02D2200/04 , F02D2200/0802 , F02M25/08 , F02M2025/0845
Abstract: A controller for an internal combustion engine includes processing circuitry that performs a dither control process on condition that a temperature increase request of a catalyst is made. The processing circuitry operates fuel injection valves so that during the dither control process, one or more cylinders are lean combustion cylinders in a first period and another one or more cylinders are rich combustion cylinders and so that the average value of an exhaust gas-fuel ratio is a target air-fuel ratio in a second period including the first period. The dither control process is restricted in a manner that, on condition that the rich process is performed, the degree of richening of the richest exhaust gas-fuel ratio of exhaust gas-fuel ratios in the cylinders is reduced.
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公开(公告)号：US20180179972A1
公开(公告)日：2018-06-28
申请号：US15852148
申请日：2017-12-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki NOSE , Keiichi MYOJO , Yoshiyuki SHOGENJI , Eiji IKUTA
IPC: F02D41/02
CPC classification number: F02D41/025 , F01N3/101 , F01N9/00 , F01N2260/10 , F01N2430/06 , F01N2900/1602 , F02D41/008 , F02D41/1456 , F02D41/1475 , Y02T10/26
Abstract: A control apparatus for an internal combustion engine includes an ECU configured to: determine whether a temperature-increasing process is being executed; calculate a target value of a parameter correlated with a difference between a rich air-fuel ratio and a lean air-fuel ratio achieved in the temperature-increasing process, based on an operating state of the internal combustion engine; calculate, as an upper limit, a value of the parameter required to increase the temperature of the catalyst to a predetermined upper limit temperature; determine whether the target value is equal to or lower than the upper limit; adjust the parameter used in the temperature-increasing process to the target value when the target value is determined to be equal to or lower than the upper limit; and adjust the parameter used in the temperature-increasing process to the upper limit when the target value is determined to be higher than the upper limit.
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公开(公告)号：US20240191666A1
公开(公告)日：2024-06-13
申请号：US18484104
申请日：2023-10-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Susumu ARAKI , Takayuki OMACHI , Yuki NOSE
CPC classification number: F02D41/0087 , B60W10/06 , B60W10/08 , B60W20/15 , F02D41/401
Abstract: An engine system includes an engine including first and second cylinders, a catalyst provided in an exhaust passage of the engine, and a control device for the engine. The control device includes a fuel cut control unit configured to execute a specific cylinder fuel cut process of stopping supply of fuel to the first cylinder and supplying fuel to the second cylinder when there is a request to warm up the catalyst, an injection amount control unit configured to increase a fuel injection amount in the second cylinder at a predetermined increase rate during execution of the specific cylinder fuel cut process, as compared to a case where the specific cylinder fuel cut process is stopped, and an injection timing control unit configured to advance a fuel injection timing in a compression stroke of the second cylinder during execution of the specific cylinder fuel cut process is stopped.
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公开(公告)号：US20230119192A1
公开(公告)日：2023-04-20
申请号：US17932672
申请日：2022-09-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki NOSE , Yuto IKEDA , Yasuyuki TAKAMA
Abstract: A CPU prompts a user to drive a vehicle to a repair shop by operating a display when an amount of PM deposited in a GPF increases. When a regeneration request for the GPF is input from a shop-side terminal in the repair shop, the CPU performs a regeneration process in a state in which the vehicle stops. The CPU controls a temperature of the GPF such that the temperature at the time of execution of the regeneration process becomes lower when an opening/closing member is in a closed state than when the opening/closing member is in an open state.
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公开(公告)号：US20220307437A1
公开(公告)日：2022-09-29
申请号：US17702791
申请日：2022-03-24
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki NOSE , Yuto IKEDA , Takanobu GOTOH
Abstract: A CPU of a control device is configured to perform a specific cylinder fuel cutoff process of causing an internal combustion engine to operate such that supply of fuel to some cylinders out of a plurality of cylinders is stopped and supply of fuel to the other cylinders is maintained and a fastening force decreasing process of decreasing a fastening force of a lockup clutch of a torque converter. The CPU is configured to start the specific cylinder fuel cutoff process in a state in which the fastening force has been decreased through the fastening force decreasing process when the specific cylinder fuel cutoff process is performed in a state in which the internal combustion engine operates with a load.
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