Relief valve for oil pump having separated bypass period
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United States of America Patent
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Oct 12, 2021
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N/A
app pub date -
May 28, 2020
filing date -
Dec 12, 2019
priority date (Note) -
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Abstract
A method of operating a relief valve assembly for an oil pump includes unblocking a first bypass inlet passage and blocking a first bypass outlet passage, a second bypass inlet passage, and a second bypass outlet passage with a plunger, introducing oil to the relief valve assembly, moving the plunger in a downward direction by a first displacement to unblock the first bypass outlet passage, starting a first bypass of the oil, moving the plunger in the downward direction by a second displacement to block the first bypass inlet passage and unblock the second bypass inlet passage, terminating the first bypass of the oil, moving the plunger in the downward direction by a third displacement to unblock the second bypass outlet passage, and starting a second bypass of the oil.
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