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公开(公告)号：US20210047978A1
公开(公告)日：2021-02-18
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：US20210079869A1
公开(公告)日：2021-03-18
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：US20200318555A1
公开(公告)日：2020-10-08
申请号：US16808695
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 , Yusuke KAWAI , Atsushi INOUE
摘要： A combustion control device for an engine includes a plurality of cylinders, a surge tank disposed in an intake path to the cylinders, an independent intake passage connecting the surge tank and an intake port of each of the cylinders, a fuel injection valve that is disposed for each of the cylinders and that supplies fuel into each of the cylinders, and a control unit that controls a fuel injection amount of each of the fuel injection valves according to an engine operating state. The control unit corrects a target fuel injection amount of each of the cylinders, the target fuel injection amount being determined according to the engine operating state, based on a re-intake correction amount set in each of the cylinders according to a re-intake amount of intake air from the intake port in internal EGR in each of the cylinders.
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公开(公告)号：US20210062709A1
公开(公告)日：2021-03-04
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：US20200318572A1
公开(公告)日：2020-10-08
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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