Apparatus and method for measuring the speed of a buried...

Details Apparatus and method for measuring the speed of a buried... Apparatus and method for measuring the speed of a buried...

2007-05-22

2007-05-22

Wright, Dirk (Department: 3681)

192 clutches and power-stop control

Clutches

Operators

Reexamination Certificate

active

11110367

ABSTRACT:
The present invention relates to the use of a magnetic sensor to detect the speed of transmission clutch plates or clutch hub. A clutch fiber plate, which is mechanically linked to a buried (or inwardly nested) transmission component, is serrated to generate detectable pulsations or fluctuations in the magnetic intensity of the clutch fiber plate as it rotates. The speed of the buried transmission component is useful in controlling a second clutch arrangement to reduce engine torsional pulses by generating a predetermined amount of slip upon engagement. Moreover, the sensor is configurable to determine the acceleration of the clutch fiber plate to control engine acceleration during a vehicle launch. The sensor is mounted to the transmission housing radially superjacent the clutch fiber plate; therefore, the axial space claim for the transmission does need not increase to accommodate the sensor.

REFERENCES:
patent: 5788040 (1998-08-01), Moorman et al.

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