In-vehicle internal combustion engine
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United States of America Patent
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Feb 9, 2021
Grant Date -
Aug 1, 2019
app pub date -
Jan 28, 2019
filing date -
Feb 1, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
An in-vehicle internal combustion engine includes a cylinder block and a cylinder head. The cylinder head includes a plurality of communication passages connected to the oil chamber. The cylinder block includes an oil passage for returning oil accumulated in the oil chamber into the oil pan. The communication passages include a first communication passage having a first opening opened in the upper surface of the cylinder head and a second communication passage having a second opening opened in the upper surface of the cylinder head. The first opening is located below the second opening. An extending wall extending in a direction intersecting the cylinder arrangement direction is provided between the first opening and the second opening on the upper surface of the cylinder head.
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