Bearing device for crankshaft of internal combustion engine
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United States of America Patent
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Sep 11, 2018
Grant Date -
Jan 11, 2018
app pub date -
Jun 29, 2017
filing date -
Jul 6, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The provided is a bearing device for a crankshaft of an internal combustion engine including: a crankshaft having a plurality of journal portions; main bearings for supporting the crankshaft; and a bearing housing, wherein a range in which the oil groove of the upper-side halved bearing of the second main bearing is formed in the circumferential direction includes at least a range of a circumferential angle of 20° within the ±45° region, a circumferential end portion of the oil groove on a rotationally forward side communicates with the crush relief at a minimum, and is open to a circumferential end face at a maximum, and a circumferential end portion of the oil groove on the rotationally backward side of the journal portion is positioned on a circumferential center portion side of the upper-side halved bearing from a circumferential end face of the upper-side halved bearing.
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