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公开(公告)号：US20200063675A1
公开(公告)日：2020-02-27
申请号：US16539159
申请日：2019-08-13
发明人： Yuto IKEDA , Yuki NOSE , Yoshiyuki SHOGENJI , Hirokazu ANDO
摘要： A control device for an internal combustion engine includes processing circuitry. The processing circuitry is configured to execute a purging process that draws the fuel vapor trapped in the canister into the intake passage by controlling the purge valve, a fuel feeding process that feeds the air-fuel mixture, which includes the fuel supplied to the cylinder, to the exhaust passage without burning the air-fuel mixture in the cylinder, and a fuel supply process that supplies fuel to the cylinder when the fuel feeding process is being performed. The processing circuitry is further configured to perform the fuel supply process by performing the purging process.
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公开(公告)号：US20190048818A1
公开(公告)日：2019-02-14
申请号：US16055475
申请日：2018-08-06
发明人： Tatsuaki SUZUKI , Yuki NOSE , Keiichi MYOJO , Yoshiyuki SHOGENJI , Eiji IKUTA
CPC分类号： F02D41/1454 , F01N3/10 , F01N3/101 , F01N3/2033 , F01N2430/06 , F01N2900/1602 , F02D41/008 , F02D41/025 , F02D41/144 , F02D41/2448 , F02D41/2454 , F02D41/34 , F02D41/40
摘要： A controller includes an air-fuel ratio control unit that calculates an air-fuel ratio F/B correction value and an air-fuel ratio learning value and corrects an amount of fuel supplied to each cylinder based on the air-fuel ratio F/B correction value FAF and the air-fuel ratio learning value KG. The controller further includes a dither control unit that executes dither control to adjust the amount of fuel supplied to each cylinder, corrected by the air-fuel ratio control unit, so that at least one of the cylinders is set to a rich combustion cylinder and at least a further one of the cylinders is set to a lean combustion cylinder. When the dither control is executed, the air-fuel ratio control unit prohibits execution of air-fuel ratio learning control and executes air-fuel ratio feedback control.
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公开(公告)号：US20180209367A1
公开(公告)日：2018-07-26
申请号：US15878513
申请日：2018-01-24
CPC分类号： F02D41/22 , F02D41/008 , F02D41/0245 , F02D41/1498 , F02D2200/0802 , F02D2200/1015 , G01M15/102 , G01M15/11 , Y02T10/26
摘要： A misfire determination device for an internal combustion engine includes an electronic control unit configured to determine whether execution of temperature rise processing in which a temperature of a catalyst is raised by an air-fuel ratio of one of the cylinders being controlled to be a rich air-fuel ratio lower than a stoichiometric air-fuel ratio and an air-fuel ratio of each of the other cylinders being controlled to be a lean air-fuel ratio higher than the stoichiometric air-fuel ratio is ongoing, determine occurrence of misfire based on whether a rotation variation amount of the internal combustion engine during non-execution of the temperature rise processing exceeds a first misfire determination value, and determine occurrence of misfire based on whether the rotation variation amount during the execution of the temperature rise processing exceeds a second misfire determination value exceeding the first misfire determination value.
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公开(公告)号：US20170284269A1
公开(公告)日：2017-10-05
申请号：US15475928
申请日：2017-03-31
发明人： Keiichi MYOJO , Yoshiyuki SHOGENJI , Yuki NOSE , Eiji IKUTA
CPC分类号： F01N3/101 , F01N2260/04 , F01N2900/0412 , F01N2900/08 , F01N2900/1402 , F01N2900/1404 , Y02T10/22
摘要： An exhaust gas control device for an internal combustion engine includes an estimation unit configured to estimate a temperature of a catalyst on the basis of an acquired operation state of the internal combustion engine and a difference between a lean air-fuel ratio and a rich air-fuel ratio which are set as target air-fuel ratios during execution of catalyst regeneration control, a determination unit configured to determine whether the estimated temperature of the catalyst is higher than a threshold value during execution of the catalyst regeneration control, and a prohibition unit configured to prohibit the catalyst regeneration control when it is determined that the estimated temperature of the catalyst is higher than the threshold value during execution of the catalyst regeneration 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
发明人： Eiji IKUTA , Yuki NOSE , Yuto IKEDA , Keiichi MYOJO , Yoshiyuki SHOGENJI , Hirokazu ANDO
摘要： 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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6.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
发明人： Misako BAN , Keiichi MYOJO , Yoshiyuki SHOGENJI , Yuki NOSE , Eiji IKUTA
摘要： 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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公开(公告)号：US20180179972A1
公开(公告)日：2018-06-28
申请号：US15852148
申请日：2017-12-22
发明人： Yuki NOSE , Keiichi MYOJO , Yoshiyuki SHOGENJI , Eiji IKUTA
IPC分类号： F02D41/02
CPC分类号： F02D41/025 , F01N3/101 , F01N9/00 , F01N2260/10 , F01N2430/06 , F01N2900/1602 , F02D41/008 , F02D41/1456 , F02D41/1475 , Y02T10/26
摘要： 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：US20200049108A1
公开(公告)日：2020-02-13
申请号：US16504468
申请日：2019-07-08
发明人： Eiji IKUTA , Yuki NOSE , Yuto IKEDA , Keiichi MYOJO , Yoshiyuki SHOGENJI , Hirokazu ANDO
摘要： 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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公开(公告)号：US20200049043A1
公开(公告)日：2020-02-13
申请号：US16526920
申请日：2019-07-30
发明人： Yuki NOSE , Yuto IKEDA , Hirofumi HASHINOKUCHI , Tatsuaki SUZUKI , Eiji IKUTA , Yoshiyuki SHOGENJI , Hirokazu ANDO
摘要： A controller for an internal combustion engine includes a fuel introduction process of introducing an air-fuel mixture containing fuel injected by a fuel injection valve into an exhaust passage without burning the air-fuel mixture in a cylinder. The fuel introduction processor is configured to perform, during the execution of the fuel introduction process, a determination process of determining whether afterfire, in which the air-fuel mixture burns at an upstream side of a three-way catalyst device in the exhaust passage, has occurred and a stopping process of stopping the fuel introduction process when determining in the determination process that the afterfire has occurred.
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10.发明申请公开(公告)号：US20190136777A1
公开(公告)日：2019-05-09
申请号：US16157784
申请日：2018-10-11
发明人： Hiroyuki TANAKA , Yuki NOSE , Masaaki KOBAYASHI , Yoshiyuki SHOGENJI , Eiji IKUTA , Misako BAN
摘要： A controller for an internal combustion engine includes processing circuitry. The processing circuitry is configured to execute a dither control process under a condition in which a request for executing a regeneration process of a filter is made. The processing circuitry is further configured to execute a fuel cutting process stopping fuel injection performed by fuel injection valves under a condition in which an accelerator operation amount is zero and a prohibition process prohibiting the fuel cutting process under a condition in which the dither control process is executed.
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