TRANSMISSION TORQUE CONVERTER
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United States of America
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Issued Date -
Jan 23, 2020
app pub date -
Jul 18, 2019
filing date -
Jul 18, 2019
priority date (Note) -
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Abstract
A valve body for an automotive transmission includes a pressure regulator valve in the casting for controlling oil pressure within the torque converter. The valve has a bore to provide fluid communication with an exhaust circuitry in the transmission when the valve is moved by oil pressure from a first position to a second position. The regulator valve prevents excessive pressure and damage from ballooning of the torque converter housing. In an alternative non-lockup torque converter, a check ball in a modified separator plate moves to open and close an oil path in the plate to thereby control oil pressure.
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