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公开(公告)号：US09657677B2
公开(公告)日：2017-05-23
申请号：US15136059
申请日：2016-04-22
CPC分类号： F02D41/2461 , B60W30/19 , F02D41/0002 , F02D41/023 , F02D41/1497 , F02D2250/18 , F02D2250/21 , F16H63/50 , Y02T10/42
摘要： An integrated control apparatus includes an internal combustion engine, a stepped automatic transmission, a power train manager, and an engine controller. The power train manager is configured to: output a target torque and a forenotice torque to the engine controller; start lowering of the target torque after a specified time elapses from a timing of an upshifting instruction; lower the forenotice torque prior to the lowering of the target torque. The engine controller is configured to: start a reduction in an air amount in accordance with a magnitude of lowering of the forenotice torque; start reducing the air amount from a time when the lowering of the forenotice torque is started until a time when the lowering of the target torque is started; and adjust an air-fuel ratio in accordance with a deviation between the target torque and a torque that is estimated from a lean air-fuel ratio and the air amount.
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公开(公告)号：US09638123B2
公开(公告)日：2017-05-02
申请号：US14765966
申请日：2013-09-27
发明人： Yoshitaka Ukawa , Naoto Kato , Shigehiro Sugihira
IPC分类号： F02M1/00 , F02D41/04 , F02D41/22 , F02D11/10 , F02D37/02 , F02D41/26 , F02D11/02 , F02D41/00
CPC分类号： F02D41/045 , F02D11/02 , F02D11/105 , F02D11/107 , F02D37/02 , F02D41/0002 , F02D41/22 , F02D41/26
摘要： A controller for an engine controls a throttle opening degree. The controller includes a target opening degree calculating section that selects either a primary request value for a throttle opening degree that corresponds to a torque request or a secondary request value that corresponds to another request and that calculates a target throttle opening degree from the selected one of the first and secondary request values. If the primary request value has been selected, an abnormality occurrence determining section determines whether or not an abnormality has occurred, in accordance with a magnitude of a deviation of the primary request value from the target throttle opening degree. If the secondary request value has been selected, the abnormality occurrence determining section determines whether or not an abnormality has occurred, in accordance with whether or not the target throttle opening degree is greater than or equal to a predetermined upper limit value.
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公开(公告)号：US11458950B2
公开(公告)日：2022-10-04
申请号：US16749995
申请日：2020-01-23
发明人： Ryosuke Ikemura , Naoto Kato , Takayoshi Kawai , Teppei Yoshioka , Hiromasa Hashimoto , Hiroshi Watanabe , Yasuhiro Kuze
摘要： A drive force control system configured to reduce a total energy consumption of a hybrid vehicle. The drive force control system calculates: an output power of the engine which can optimize a thermal efficiency given that the engine is operated at a best fuel point; and a required electric power to be supplied from a battery or to be generated by a control motor, which can adjust the drive power established by the output power of the engine to the required power. A power exchange between the control motor and the battery is interrupted if the required electric power to be supplied from the electric storage device or to be generated by the control motor is less than a first predetermined electric power.
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公开(公告)号：US10954876B2
公开(公告)日：2021-03-23
申请号：US16371192
申请日：2019-04-01
发明人： Keisuke Sasaki , Naoto Kato
摘要： A vehicle system includes: an internal combustion engine including an electronically-controlled throttle valve configured to change throttle opening degrees in a step-wise manner among at least three selectable opening degrees, and being mounted on a vehicle; and a control device configured to control the vehicle. The control device includes a required throttle opening degree setting component and a first throttle opening degree selecting component. The first throttle opening degree selecting component is configured to: select, at the time of acceleration of the vehicle, a first throttle opening degree that is greater than the required throttle opening degree and is the closest to the required throttle opening degree; and select, at the time of deceleration of the vehicle, a second throttle opening degree that is smaller than the required throttle opening degree and is the closest to the required throttle opening degree.
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公开(公告)号：US10710570B2
公开(公告)日：2020-07-14
申请号：US16359405
申请日：2019-03-20
发明人： Naoto Kato , Tomoya Ota , Keisuke Sasaki
摘要： There is a control system for a hybrid vehicle including an internal combustion engine including a throttle valve on an intake air passage, and a generator coupled to an output shaft of the engine. The control system includes a controller. The controller is configured to detect shaft torque of the output shaft of the engine by the generator, calculate an actual value of a throttle flow rate based on the shaft torque, the flow rate being an amount of air that flows through the throttle valve, and learn flow rate characteristics indicating a relationship between a throttle opening being a degree of opening of the throttle valve and the throttle flow rate, based on an actual value of the throttle opening and the actual value of the throttle flow rate.
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公开(公告)号：US10273898B2
公开(公告)日：2019-04-30
申请号：US15534696
申请日：2015-12-10
摘要： A controller for an internal combustion engine includes an electronic control unit. The electronic control unit is configured to increase an air amount that is suctioned into a cylinder while maintaining the lean air-fuel ratio as a first torque increasing operation in a case where target torque is increased during the operation at the lean air-fuel ratio such that torque is increased. The electronic control unit is configured to compute limit torque as an upper limit of the torque that can be realized in a case where the lean air-fuel ratio is kept for a certain time from a current time point. The electronic control unit is configured to switch to the operation at the theoretical air-fuel ratio and increase the torque as a second torque increasing operation in a case where the target torque becomes higher than the limit torque during execution of the first torque increasing operation.
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公开(公告)号：US10190519B2
公开(公告)日：2019-01-29
申请号：US15537995
申请日：2015-10-27
摘要： The invention relates to a control device for an internal combustion engine that includes a turbocharger, and an actuator that changes a turbocharging pressure by regulating exhaust energy for use in drive of the turbocharger. When a target torque is increased during execution of a lean burn operation, the control device switches an operation mode of the internal combustion engine from the lean burn operation to a stoichiometric operation. When the operation mode switching is performed in a turbocharging state, the control device determines whether a target torque is within a range of a torque realizable under the lean air-fuel ratio. When the target torque is within the range, the control device operates the actuator so as to keep the turbocharging pressure at a magnitude equal to or larger than a magnitude at a time point at which the operation mode is switched.
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公开(公告)号：US11267454B2
公开(公告)日：2022-03-08
申请号：US16516325
申请日：2019-07-19
摘要： A control system for a hybrid vehicle that can prevent an overcharging of a battery even if a wheel speed drops abruptly. The hybrid vehicle comprises: an engine; a generator that is driven by the engine; a drive motor that generate a drive torque; and a battery. The electric power generated by the generator is supplied directly to the battery or the drive motor. A controller is configured to determine whether the drive wheel will be locked, and to reduce the electric power generated by the generator less than an acceptable input power to the battery if the drive wheel is expected to be locked.
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公开(公告)号：US11167745B2
公开(公告)日：2021-11-09
申请号：US16279093
申请日：2019-02-19
发明人： Keisuke Sasaki , Satoshi Tsuda , Naoto Kato
摘要： A control system of a hybrid vehicle includes an internal combustion engine loaded on a vehicle, an electric motor loaded on the vehicle, and connected to wheels via a power transmission mechanism, a battery storing power that drives the electric motor, and a control device that controls engine torque generated by the internal combustion engine, and motor torque transmitted to the wheels by the electric motor. The control device calculates an outputable power of the battery based on a temperature and a state of charge of the battery. The control device is configured to make a torque change amount of the engine torque larger when the calculated outputable power belongs to a predetermined low power region than when the outputable power belongs to a high power region with higher power than the low power region.
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公开(公告)号：US10718276B2
公开(公告)日：2020-07-21
申请号：US15650821
申请日：2017-07-14
IPC分类号： F02D15/02 , F02D41/22 , F02P5/152 , F02B75/04 , F02D35/02 , F02B37/18 , F02D13/02 , F02D41/02 , F02D41/30 , F01L1/344 , F02D41/00
摘要： A failure diagnosis apparatus according to the present disclosure is applied to a variable compression ratio mechanism that can switch the compression ratio of an internal combustion engine between at least a first compression ratio and a second compression ratio lower than the first compression ratio. When the variable compression ratio mechanism is controlled so as to set the compression ratio of the internal combustion engine to the second compression ratio, the failure diagnosis apparatus advances the ignition timing of one cylinder to a knock inducing ignition timing more advanced than the MBT that does not lead to the occurrence of knock if the actual compression ratio of that cylinder is the second compression ratio but leads to the occurrence of knock if the actual compression ratio of that cylinder is the first compression ratio and diagnoses failure of the variable compression ratio mechanism on the basis of whether knock occurs or not.
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