Abnormality assessment device of internal combustion engine
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United States of America Patent
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Mar 2, 2021
Grant Date -
Aug 13, 2020
app pub date -
Jan 14, 2020
filing date -
Feb 8, 2019
priority date (Note) -
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Abstract
An internal combustion engine includes on-off valves that configure a closed space by closing an internal space of a breather line, a pump that depressurizes or pressurizes the closed space, a pressure sensor that detects a pressure of the closed space, and an abnormality assessment element that assesses abnormality of the breather line. The abnormality assessment element assesses abnormality of the breather line based on a pressure change of the closed space in a case where the closed space is depressurized or pressurized by the pump.
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