SELECTIVE INTERNAL DISTRIBUTION OF ENGINE MOTOR OIL
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United States of America Patent
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Issued Date -
Jul 9, 2015
app pub date -
Jun 26, 2012
filing date -
Jun 26, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Engine motor oil drawn from an oil sump by an oil pump is forced to flow through a primary flow path to moving engine parts at pressures spanning a first pressure range and a second pressure range which is greater than the first pressure range. When pressure is within the first pressure range, some engine motor oil flow may be diverted to a secondary flow path having piston cooling jets which spray engine motor oil toward undercrown surfaces of engine pistons. When pressure is within the second pressure range, some engine motor oil flow is diverted to the piston cooling jets and also to a tertiary flow path which may be a return to the oil sump.
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