公开(公告)号：US20190120168A1

公开(公告)日：2019-04-25

申请号：US16160591

申请日：2018-10-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sohichi IMAI ,  Masanao IDOGAWA

IPC: F02D41/40 ,  F02D41/00

CPC classification number: F02D41/402 ,  F02D41/0082 ,  F02D41/0085 ,  F02D41/1443

Abstract: A controller for controlling an internal combustion engine includes an injection amount calculation portion that calculates a base injection amount, an injection amount correction portion that corrects the base injection amount to calculate first and second corrected injection amounts, and an injection count determination portion that determines first and second fuel injection counts, which are respectively a number of times fuel is injected from first and second fuel injection valves. When the first and second corrected injection amounts are respectively calculated using the same base injection amount, the injection count determination portion sets the first fuel injection count corresponding to the first corrected injection amount to be equal to the second fuel injection count corresponding to the second corrected injection amount.

公开(公告)号：US20190316535A1

公开(公告)日：2019-10-17

申请号：US16358830

申请日：2019-03-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sohichi IMAI ,  Masanao IDOGAWA

IPC: F02D41/06 ,  F02P9/00 ,  F02D41/14 ,  F02D41/00 ,  F02P5/15

Abstract: An electronic control unit performs a cylinder-by-cylinder correction of a fuel injection amount to cause differences among air-fuel ratios of air-fuel mixture burned in multiple cylinders. In a case in which the cylinder-by-cylinder correction of the fuel injection amount results in a cylinder in which combustion is performed at an air-fuel ratio richer than an output air-fuel ratio, the output air-fuel ratio being an air-fuel ratio at which combustion torque is maximized, the electronic control unit performs a cylinder-by-cylinder correction of ignition timing such that the ignition timing of the cylinder in which combustion is performed at the air-fuel ratio richer than the output air-fuel ratio becomes more advanced than the ignition timing of the other cylinders.

公开(公告)号：US20220403767A1

公开(公告)日：2022-12-22

申请号：US17749147

申请日：2022-05-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sohichi IMAI ,  Yuya YOSHIKAWA ,  Kazuhiro HASEGAWA ,  Yoshifumi MATSUDA ,  Masanao IDOGAWA ,  Takahiro UCHIDA ,  Yuki YABUSHITA

IPC: F01N9/00 ,  F01N3/10 ,  F01N11/00 ,  F01N3/025

Abstract: A control device for an internal combustion engine including an upstream cleaning device and a downstream cleaning device that are provided in an exhaust gas passage and a temperature sensor that detects a temperature of exhaust gas between the upstream cleaning device and the downstream cleaning device is provided. The control device includes a first temperature estimating unit configured to estimate a temperature of the downstream cleaning device from the temperature of exhaust gas detected by the temperature sensor and a second temperature estimating unit configured to estimate a temperature of the downstream cleaning device without using the temperature of exhaust gas detected by the temperature sensor. An abnormality determining process for the upstream cleaning device is performed when at least the temperature of the downstream cleaning device estimated by the second temperature estimating unit is equal to or greater than a predetermined threshold value.

公开(公告)号：US20190162125A1

公开(公告)日：2019-05-30

申请号：US16185032

申请日：2018-11-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sohichi IMAI ,  Masanao IDOGAWA

IPC: F02D41/14 ,  F02D41/30

CPC classification number: F02D41/1408 ,  F02D41/0085 ,  F02D41/024 ,  F02D41/1454 ,  F02D41/2454 ,  F02D41/2458 ,  F02D41/30 ,  F02D2041/0265

Abstract: A fuel injection controller updates an air-fuel ratio learning value such that the amount of correction of a fuel injection amount according to an air-fuel ratio feedback correction value approaches zero. Further, the fuel injection controller makes an update rate of the air-fuel ratio learning value lower when the variation among respective-cylinder correction values, which are set for the respective cylinders in order to differentiate air-fuel ratios of a plurality of cylinders, is great than when the variation among the respective-cylinder correction values of the cylinders is small.

公开(公告)号：US20190093591A1

公开(公告)日：2019-03-28

申请号：US16114568

申请日：2018-08-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sohichi IMAI ,  Motohiro SUGIMOTO ,  Masanao IDOGAWA

IPC: F02D41/38 ,  F02D41/32 ,  F02M69/04 ,  F02M59/36 ,  F02D1/06 ,  F02D45/00 ,  F02D19/06

Abstract: A fuel injection control apparatus for an internal combustion engine includes a low pressure fuel pump, a low pressure fuel passage, a high pressure fuel pump, a high pressure fuel passage, a fuel injection valve, a high pressure controller, and a low pressure controller. The low pressure controller calculates a feedforward correction amount that increases as a request injection amount of the fuel injection valve increases and an increase rate of the high pressure target value increases when a high pressure target value increases. The low pressure controller calculates a feedback correction amount based on a low-side pressure deviation when the high pressure target value increases. The low pressure controller controls driving of the low pressure fuel pump based on a sum of the feedforward correction amount and the feedback correction amount.

公开(公告)号：US20230304434A1

公开(公告)日：2023-09-28

申请号：US18183333

申请日：2023-03-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masaya KUBO ,  Koji ICHIKAWA ,  Takahiro YOSHIDA ,  Takahiro NISHIGAKI ,  Noriaki KUMAGAI ,  Sohichi IMAI ,  Masahiro NOGUCHI

IPC: F01P7/16

CPC classification number: F01P7/164 ,  F01P2050/24 ,  F01P2037/00 ,  F01P2025/36

Abstract: A cooling device is employed in a vehicle including an internal combustion engine provided with a forced-induction device and an intercooler. The cooling device includes a circulation circuit configured to circulate coolant supplied to the intercooler, an electric pump configured to operate to circulate the coolant in the circulation circuit, and processing circuitry configured to control a discharge amount of the coolant of the pump. The processing circuitry is configured to execute a control amount deriving process of deriving a control amount of the pump based on a requested flow rate and a coolant temperature, and an operation process of causing the pump to operate based on the control amount when the requested flow rate is larger than 0.

公开(公告)号：US20220010749A1

公开(公告)日：2022-01-13

申请号：US17356660

申请日：2021-06-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masanao IDOGAWA ,  Takahiro UCHIDA ,  Koji ICHIKAWA ,  Hiroaki MIZOGUCHI ,  Takuya OKUBO ,  Sohichi IMAI ,  Hirokazu ANDOH

IPC: F02D41/40

Abstract: An engine device includes an engine including an in-cylinder injection valve and a spark plug, an exhaust gas control device, and a controller. The controller is configured to perform a last fuel injection from the in-cylinder injection valve in an expansion stroke and to set a fuel injection amount for the last fuel injection in expansion stroke injection driving, based on a coolant start temperature, post-start time, and volumetric efficiency. The expansion stroke injection driving is a control that is performed by performing the ignition by the spark plug in synchronization with the fuel injection in the expansion stroke.

公开(公告)号：US20210388795A1

公开(公告)日：2021-12-16

申请号：US17329150

申请日：2021-05-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sohichi IMAI ,  Shigeki NAKAYAMA ,  Masanao IDOGAWA ,  Daigo ANDO

IPC: F02D43/04

Abstract: In an engine device, when executing normal control that performs fuel injection and ignition as control of an engine, a controller estimates, in the case of a stoichiometric air-fuel ratio, an exhaust gas temperature based on first thermal energy that is based on a combustion gas temperature, a combustion gas quantity, and specific heat of combustion gas, estimates, in the case of a lean air-fuel ratio, the exhaust gas temperature based on the first thermal energy and second thermal energy that is based on an air temperature, a surplus air quantity, and specific heat of air, and estimates, in the case of a rich air-fuel ratio, the exhaust gas temperature based on the first thermal energy and third thermal energy that is based on a fuel temperature, a surplus fuel quantity, specific heat of fuel, and evaporation latent heat of fuel.

公开(公告)号：US20250033434A1

公开(公告)日：2025-01-30

申请号：US18671999

申请日：2024-05-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shoichi AKIYAMA ,  Sohichi IMAI

IPC: B60H1/00

Abstract: The thermal management circuit includes a battery, a first flow path through which a heat medium in which heat exchange is performed between the battery and the battery flows, a water pump (first flow rate adjusting unit), and a water pump (second flow rate adjusting unit). In the thermal management circuit, the flow rate of the heat medium is adjusted by each of the water pump and the water pump, whereby the flow state and the stop state are switched. In the above stop state, the flow of the heat medium toward one side in the first flow path and the flow of the heat medium toward the other side in the first flow path are canceled, whereby the flow of the heat medium in the first flow path is stopped.

公开(公告)号：US20230347863A1

公开(公告)日：2023-11-02

申请号：US18172320

申请日：2023-02-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masanao IDOGAWA ,  Hirokazu ANDOH ,  Takahiro UCHIDA ,  Yoshikazu ASAMI ,  Hidekazu NAWATA ,  Jumpei NASU ,  Sohichi IMAI

IPC: B60W20/10 ,  B60W20/16 ,  B60W20/40 ,  F01N3/20

CPC classification number: B60W20/10 ,  B60W20/16 ,  B60W20/40 ,  F01N3/20 ,  B60K6/24

Abstract: Hybrid electric vehicle includes an engine, a first electric motor, a second electric motor, an electric power storage device, and a control device. The control device is configured to control the engine and the first electric motor so that the engine is operated at a first predetermined engine speed while outputting a predetermined torque, and to control the second electric motor so that a driving force based on a required driving force is output, when the rapid catalyst warm-up is executed when the engine is idle off.