公开(公告)号：US20190242320A1

公开(公告)日：2019-08-08

申请号：US16264736

申请日：2019-02-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keiichiro AOKI ,  Mie KATO ,  Kazuki TAKAHASHI

IPC: F02D41/14 ,  F02N11/08

CPC classification number: F02D41/1494 ,  F02N11/0829 ,  F02N11/0833 ,  F02N2200/061 ,  F02N2200/063 ,  G01N27/4067

Abstract: A sensor system for an engine for which an automatic stop-restart control is performed, the sensor system including: an exhaust gas sensor including a heater that heats a sensor element; and a control unit configured to: while the engine is stopped by the automatic stop-restart control, execute a preheat control of adjusting a temperature of the sensor element to a preheat temperature lower than an activation temperature; when an automatic start condition is satisfied, stop the preheat control and increase the temperature of the sensor element to the activation temperature; when an automatic stop condition is satisfied and a delay condition has not been satisfied, set the preheat temperature to a first temperature; and when the automatic stop condition is satisfied and the delay condition has been satisfied, set the preheat temperature to a second temperature higher than the first temperature.

公开(公告)号：US20250155323A1

公开(公告)日：2025-05-15

申请号：US18830669

申请日：2024-09-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuki TAKAHASHI

IPC: G01M15/10 ,  F02D41/14 ,  G01N27/02

Abstract: An air-fuel ratio calculation device is applied to an air-fuel ratio sensor including a sensor element installed in an exhaust passage of an engine and a heater for heating the sensor element. The air-fuel ratio calculation device includes an acquisition unit, an impedance calculation unit, an electric power calculation unit, and an air-fuel ratio calculation unit.

公开(公告)号：US20220135159A1

公开(公告)日：2022-05-05

申请号：US17499143

申请日：2021-10-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shohei ISHIKURA ,  Yuichi HIRANO ,  Shota FUKAYA ,  Kazuki TAKAHASHI ,  Yuhei KOSAKA ,  Shunji INOUE

IPC: B62D65/02 ,  B23P19/02 ,  F16B4/00

Abstract: A method for manufacturing a vehicle in which a projected part formed on an assembly surface of one component and a recessed part formed on an assembly surface of the other component are fitted to each other so that the one component and the other component are assembled together is provided. A barb structure protruding outward and towards the root side of the projected part is formed on an outer circumferential surface of the projected part. Alternatively, a barb structure protruding inward and towards the root side of the recessed part is formed on an inner circumferential surface of the projected part and a groove into which the barb structure fits is formed on an outer circumferential surface of the projected part.

公开(公告)号：US20190249616A1

公开(公告)日：2019-08-15

申请号：US16273160

申请日：2019-02-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keiichiro AOKI ,  Kazuki TAKAHASHI

IPC: F02D41/14 ,  F01N11/00

CPC classification number: F02D41/1494 ,  F01N11/002 ,  F02D41/1445 ,  G01N27/4067

Abstract: A control apparatus for an internal combustion engine includes an exhaust gas sensor that has a sensor element and a heater for electrically heating the sensor element, a sensor circuit that detects the electric current generated by the exhaust gas sensor, a controller configured to: carry out starting processing to start the internal combustion engine, learn a value of the output of the sensor circuit when the starting processing is carried out by the controller, and control a temperature of the sensor element by using the heater, and controls the temperature of the sensor element to less than the predetermined temperature until the learning of the output value of the sensor circuit by the controller is completed after the starting processing is carried out by the controller.