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公开(公告)号：US20240255381A1
公开(公告)日：2024-08-01
申请号：US18560575
申请日：2022-02-01
申请人： Hitachi Astemo, Ltd.
发明人： Shinya MATOHARA , Takeshi ETO
IPC分类号： G01M15/04
CPC分类号： G01M15/042
摘要： An ECU includes a processing device that repeatedly executes an air amount calculation process for estimating a flow rate of intake air. The processing device acquires a detection value of a flow rate sensor and stores the detection value in a storage device, stores a time when the detection value of the flow rate sensor is acquired in the storage device as a first time stamp, and stores a time when the air amount calculation process is executed in the storage device as a second time stamp. In the air amount calculation process of the processing device, an execution interval of a calculation process at a current time point is calculated based on the second time stamp, an integration period having the same time width as the execution interval of the calculation process at the current time point is set based on the second time stamp, an integrated mass of the intake air in the integration period is calculated based on a detection value of the flow rate sensor and the first time stamp, and the flow rate of the intake air in the integration period is estimated using the integrated mass of the calculation result and the execution interval.
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公开(公告)号：US20220235719A1
公开(公告)日：2022-07-28
申请号：US17596433
申请日：2020-06-23
申请人： Hitachi Astemo, Ltd.
摘要： Provided is an internal combustion engine control device capable of appropriately correcting a flow rate of EGR gas. Therefore, an internal combustion engine control device 20 includes moisture amount calculation units 301 and 302, a dew condensation calculation unit 303, and an EGR correction unit 304. The moisture amount calculation unit 301 calculates a total moisture amount contained in the mixed gas. The dew condensation calculation unit 303 calculates a dew condensation generation amount WQcon in an intercooler based on the total moisture amount. The EGR correction unit 304 corrects a flow rate of the EGR gas based on the dew condensation generation amount WQcon.
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