Invention Grant
- Patent Title: Deterioration determination apparatus for airflow meter and deterioration determination method
- Patent Title (中): 气流计劣化判定装置及劣化判定方法
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Application No.: US13277476Application Date: 2011-10-20
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Publication No.: US08739614B2Publication Date: 2014-06-03
- Inventor: Hidehito Tsujii , Kiyohisa Inoue
- Applicant: Hidehito Tsujii , Kiyohisa Inoue
- Applicant Address: JP Kariya
- Assignee: Denso Corporation
- Current Assignee: Denso Corporation
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye PC
- Priority: JP2010-235950 20101020
- Main IPC: G01M15/04
- IPC: G01M15/04
Abstract:
When a deterioration determination apparatus determines a degree of deterioration in characteristics of an airflow meter, a driving condition of an engine is maintained at a specified condition in which intake air flow rate is greater than a specified value. A measurement error of the airflow meter is computed based on an intake air flow rate measured with the airflow meter. The degree of deterioration due to stain is determined based on the measurement error.
Public/Granted literature
- US20120111100A1 DETERIORATION DETERMINATION APPARATUS FOR AIRFLOW METER AND DETERIORATION DETERMINATION METHOD Public/Granted day:2012-05-10
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