Transmission input shaft speed detecting apparatus utilizing oil pump pressure
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United States of America Patent
Stats
-
Feb 9, 1993
Grant Date -
N/A
app pub date -
Jun 28, 1991
filing date -
Jul 6, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for use with a transmission including an input shaft, and an oil pump rotatable in synchronism with the input shaft to detect a speed of rotation of the input shaft. The apparatus comprises a pressure sensor sensitive to an oil pressure discharged from the oil pump for producing an electrical signal indicative of a sensed pressure. The electrical signal is utilized to detect the input shaft rotation speed.
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