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公开(公告)号：US10968856B2
公开(公告)日：2021-04-06
申请号：US16960613
申请日：2019-01-22
发明人： Shinji Takayama , Takeatsu Ito , Michio Ito , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
摘要： When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 in a manner allowing an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES), and the SPCCI combustion is performed (#13: YES), the ECU 60 executes fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14), so as to attain torque reduction for the vehicle attitude control. On the other hand, when the SPCCI combustion is not performed (#13: NO), the ECU 60 executes ignition retardation control of retarding an ignition timing of the spark plug 16 (#15).
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公开(公告)号：US10794316B2
公开(公告)日：2020-10-06
申请号：US16459523
申请日：2019-07-01
发明人： Yuto Matsushima , Masayoshi Higashio , Yugou Sunagare , Shinji Takayama , Kenko Ujihara , Yuta Masuda
摘要： A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition, a swirl control valve, a sensor and a controller. The controller is configured to execute a first mode module, a second mode module, and a changing module to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio, and outputs a signal to the swirl control valve so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module causes the second mode module to start the second mode.
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公开(公告)号：US11371462B2
公开(公告)日：2022-06-28
申请号：US16808663
申请日：2020-03-04
发明人： Masanari Sueoka , Junichi Taga , Hideki Omori , Keiji Maruyama , Tatsuhiro Tokunaga , Takuya Ohura , Toru Miyamoto , Tomohiro Nishida , Kenji Tanimura , Shinji Takayama
摘要： The control apparatus for a compression ignition type engine includes a plurality of cylinder inner pressure sensors that detect pressure in each cylinder, and a combustion control unit. The combustion control unit corrects a target fuel injection amount of each cylinder by an injector based on a deviation between a predicted combustion period that is a period from an ignition timing by an ignition plug to a predetermined mass combustion timing and that is obtained based on a preset combustion model, and an actual combustion period that is a period from the ignition timing by the ignition plug to an actual combustion timing and that is obtained based on cylinder inner pressure, such that the period from the ignition timing by the ignition plug to the predetermined mass combustion timing, which is the timing when fuel having a predetermined mass ratio combusts, is equalized in each cylinder.
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公开(公告)号：US11313312B2
公开(公告)日：2022-04-26
申请号：US16963122
申请日：2019-01-16
发明人： Shinji Takayama , Takeatsu Ito , Masahiro Nagoshi , Yuichiro Akiya , Yuto Matsushima , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
摘要： A control unit performs a vehicle attitude control to reduce a torque generated by an engine when an increase in a steering angle exceeds a standard increase, and a spark ignition controlled compression ignition combustion in a predetermined operating range. In the spark ignition controlled compression ignition combustion, switching of an air-fuel ratio mode is performed between a first air-fuel ratio mode (λ>1) is formed and a second air-fuel ratio mode (in which a mixed gas of λ≤1) is formed. If the switching of the air-fuel ratio mode is requested without the vehicle attitude control, the control unit allows performing the requested switching of the air-fuel ratio mode. In contrast, if the mode switching is requested in a state where the vehicle attitude control is requested, the control unit disallows switching of the air-fuel ratio mode even when the switching of the air-fuel ratio mode is requested.
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公开(公告)号：US11242817B2
公开(公告)日：2022-02-08
申请号：US16962482
申请日：2019-01-16
发明人： Shinji Takayama , Takeatsu Ito , Masahiro Nagoshi , Yuichiro Akiya , Yuto Matsushima , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
摘要： An engine control method includes a step of setting combustion mode in which a first combustion mode in which a mixed gas is combusted by propagating flame or a second combustion mode in which the mixed gas is combusted by self-ignition is selected, a step of setting air-fuel ratio mode in which a lean first air-fuel ratio mode or a second air-fuel ratio mode equal to or richer than a theoretical air-fuel ratio is selected, a step of setting torque reduction in which a torque reduction amount by which a torque generated by an engine is reduced based on a steer angle of a steering wheel, and a suppressing step in which reducing the torque generated by the engine based on the torque reduction amount set in the step of setting torque reduction is suppressed.
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公开(公告)号：US11008930B2
公开(公告)日：2021-05-18
申请号：US16960502
申请日：2019-01-22
发明人： Shinji Takayama , Takeatsu Ito , Michio Ito , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
摘要： When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 to allow an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES) and the SPCCI combustion is performed (#13: YES), the ECU 60 prohibits ignition retardation and performs torque reduction for the vehicle attitude control, by fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14). On the other hand, when the SPCCI combustion is not performed (NO in #13), the ECU 60 performs the ignition retardation to attain the torque reduction for the vehicle attitude control (#15).
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公开(公告)号：US20230365119A1
公开(公告)日：2023-11-16
申请号：US18190017
申请日：2023-03-24
发明人： Shinji Takayama , Takefumi Takada
CPC分类号： B60W20/15 , B60W10/06 , B60W10/08 , F02P5/1504 , B60W2540/10 , B60W2710/0666 , B60W2710/083 , B60W2510/0657 , B60W2510/083 , B60W2510/0604
摘要： A driving force control device for a vehicle is provided, which includes a motor, an engine, and a controller. The controller sets a target torque of the vehicle corresponding to accelerator operation, distributes a target engine torque, based on the target torque, and outputs a control signal corresponding to the target engine torque. The controller estimates a future amount of intake air to a cylinder based on the target engine torque, and estimates an engine torque after a setup time from the present time based on the estimated future amount of intake air. The controller sets a target motor torque after the setup time based on the estimated engine torque after the setup time so that the target torque is achieved, and outputs a control signal corresponding to the target motor torque to synchronize a torque response of the engine with a torque response of the motor.
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公开(公告)号：US10934990B2
公开(公告)日：2021-03-02
申请号：US16781240
申请日：2020-02-04
发明人： Takuya Ohura , Keiji Maruyama , Toru Miyamoto , Kouji Hadama , Masataka Sumita , Takahiro Izaki , Shinji Takayama
摘要： A control device is provided for a compression ignition engine, which controls the engine so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in late compression stroke or early expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount are performed, and fuel is injected at a timing where fuel is present inside the combustion chamber before the preceding ignition. In a high-speed side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.
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公开(公告)号：US10859015B2
公开(公告)日：2020-12-08
申请号：US16452421
申请日：2019-06-25
发明人： Yuto Matsushima , Masayoshi Higashio , Yugou Sunagare , Shinji Takayama , Kenko Ujihara , Yuta Masuda
摘要： A control system for a compression ignition engine includes a combustion chamber, a throttle valve, an injector, an ignition plug, an EGR system, a sensor device and a controller. The controller includes a first mode module, a second mode module and a changing module configured to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and outputs a signal to the EGR system so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module permits that the second mode module starts the second mode.
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公开(公告)号：US10801393B2
公开(公告)日：2020-10-13
申请号：US16456274
申请日：2019-06-28
发明人： Yuto Matsushima , Masayoshi Higashio , Yugou Sunagare , Shinji Takayama , Kenko Ujihara , Yuta Masuda
摘要： A control system for a compression ignition engine configured to start compression ignition combustion by igniting mixture gas formed by injecting fuel into combustion chambers is provided, which includes combustion chambers each defined in respective cylinders so that displacements of the combustion chambers change by respective pistons reciprocating, a throttle valve, ignition plugs, injectors, a sensor having measuring parts including an atmospheric-pressure detector configured to detect an atmospheric pressure, and configured to measure parameters related to operation of the engine, and a controller. The controller executes a lean compression ignition combustion control in which compression ignition combustion is performed at a given lean air-fuel ratio higher than a stoichiometric air-fuel ratio. The controller restricts the execution of the lean compression ignition combustion control when the controller determines that the atmospheric pressure is lower than a given threshold based on a signal outputted from the atmospheric-pressure detector.
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