Method and system for detecting the rotation rate of the output

Details Method and system for detecting the rotation rate of the output Method and system for detecting the rotation rate of the output

1986-10-06

1989-02-14

Wright, Dirk

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74731, 74866, 192103F, B60K 4122

Patent

active

048039012

ABSTRACT:
A vehicle automatic transmission includes a torque converter which has a rotational power output member, and also includes a gear transmission mechanism. This gear transmission mechanism includes; a friction engaging mechanism; first and second rotational power input members; a first clutch which selectively engages the torque converter rotational power output member to the first rotational power input member; and a second clutch which selectively engages the torque converter rotational power output member to the second rotational power input member. When the torque converter rotational power output member is rotating the first rotational power input member via the first clutch, the gear transmission mechanism is enabled to provide its first speed stage, while, when the torque converter rotational power output member is rotating the second rotational power input member via the second clutch, the gear transmission mechanism is enabled to provide a speed stage other than its the first speed stage in cooperation with the engagement operation of the friction engaging mechanism. The rotational speed of the rotational power output member of the torque converter is detected, when the first clutch is disengaged and the second clutch is engaged, by taking it as being the rotational speed of the second rotational power input member of the gear transmission mechanism. A system is also disclosed for performing the method.

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