Engine cooling structure
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United States of America Patent
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Mar 2, 2021
Grant Date -
Jul 23, 2020
app pub date -
Jan 9, 2020
filing date -
Jan 17, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
An engine cooling structure includes a cylinder block including a block inner peripheral wall that defines a water jacket and a block outer peripheral wall, a spacer housed in the water jacket, and a cooler provided outside the engine body. The spacer includes: a peripheral wall surrounding the block inner peripheral wall; and a dividing wall protruding from the peripheral wall to divide the water jacket into an upper passage and lower passages below the upper passage. A coolant introduced from a coolant inlet into the upper passage passes through an inter-bore part of the block inner peripheral wall. The coolant in the lower passages is introduced into the cooler through a coolant exit.
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