Torque converter clutch lockout hydraulic system
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United States of America Patent
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Jun 10, 1997
Grant Date -
N/A
app pub date -
Feb 20, 1996
filing date -
Feb 20, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for controlling operation of a bypass clutch for a torque converter in an automatic transmission includes a converter lockout valve for producing a pressure signal having a first magnitude indicating unlocked operation of the converter clutch and a second magnitude representing locked operation, the pressure magnitudes being produced in response to control pressures representing engine speed, transmission operation in any forward gear, and in a first forward gear.
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