Method for monitoring a cylinder pressure sensor

    公开(公告)号:US11149664B2

    公开(公告)日:2021-10-19

    申请号:US16614908

    申请日:2018-05-03

    摘要: A method for monitoring a cylinder pressure sensor, in which method the sensor value is checked for admissibility and inadmissibility in a predefinable crankshaft angle range, when admissibility is detected the cylinder pressure sensor is used further and when inadmissibility is detected the cylinder pressure sensor is deactivated. A first sensor value of the cylinder pressure sensor is set as a start value, and a second sensor value is set as a stop value, a plateau range is determined from the number of sampling steps between the start value and the stop value, and the plateau range is set as decisive for the admissibility or inadmissibility of the sensor values.

    Method for operating an internal combustion engine, engine control unit and internal combustion engine

    公开(公告)号:US11293365B2

    公开(公告)日:2022-04-05

    申请号:US17131336

    申请日:2020-12-22

    IPC分类号: F02D41/14 F02D41/28 F02D41/40

    摘要: A method for operating an internal combustion engine, including aligning an injection behavior of the number of injectors. Aligning the injection behavior includes switching off one injector of the number of injectors, detecting a signal of the internal combustion engine that is to be assigned to the switched off injector, determining an alignment characteristic from the signal and assigning the alignment characteristic to the switched off injector as an alignment characteristic assigned to the injector, and switching on the previously switched off injector. Aligning the injection behavior further includes performing the aforementioned steps sequentially for the other injectors of the number of injectors and correcting a control of an injector that is to be corrected using the measured value assigned to the injector that is to be corrected.

    METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, ENGINE CONTROL UNIT AND INTERNAL COMBUSTION ENGINE

    公开(公告)号:US20210115868A1

    公开(公告)日:2021-04-22

    申请号:US17131336

    申请日:2020-12-22

    IPC分类号: F02D41/14 F02D41/28 F02D41/40

    摘要: A method for operating an internal combustion engine, including aligning an injection behavior of the number of injectors. Aligning the injection behavior includes switching off one injector of the number of injectors, detecting a signal of the internal combustion engine that is to be assigned to the switched off injector, determining an alignment characteristic from the signal and assigning the alignment characteristic to the switched off injector as an alignment characteristic assigned to the injector, and switching on the previously switched off injector. Aligning the injection behavior further includes performing the aforementioned steps sequentially for the other injectors of the number of injectors and correcting a control of an injector that is to be corrected using the measured value assigned to the injector that is to be corrected.