Failure determination device for internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America
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Apr 5, 2022
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N/A
app pub date -
Mar 16, 2021
filing date -
Mar 16, 2021
priority date (Note) -
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Abstract
In a failure determination device for an internal combustion engine equipped with a supercharger, the failure determination device determining a failure of a breather pipe that is connected between a crankcase and an intake passage at a position on an upstream side of the supercharger, the breather pipe is constituted by a double pipe including an inner pipe and an outer pipe, a communication passage communicates an enclosed space between the inner pipe and the outer pipe of the breather pipe with a portion of the intake passage on a downstream side of the supercharger. When the detected breather outer-pipe gauge pressure is higher than or equal to a determination threshold that is set in accordance with detected intake gauge pressure, the failure determination device determines that the breather pipe is failed.
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