System for detecting malfunction of turbine speed measuring devi

Details System for detecting malfunction of turbine speed measuring devi System for detecting malfunction of turbine speed measuring devi

1990-03-19

1991-04-23

Swann, III, Glen R.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340438, 340681, 340671, B60Q 900, G08B 2100

Patent

active

050103180

ABSTRACT:
A malfunction detecting system issues an alarm signal when a torque converter turbine speed measuring device is out of order. The system comprises a first sensor issuing a first information signal representative of the rotation speed of an output part of an engine; a second sensor issuing a second information signal representative of the rotation speed of an output part of the torque converter; a third sensor issuing a third information signal representative of the rotation speed of an output part of a transmission gear train; and a computer-aided control unit which includes a first section which respectively determines first, second and third reference minimum speeds of the respective output parts of the engine, the torque converter and the transmission gear train, and a second section which issues an alarm signal when the rotation speed derived from the first information signal is higher than the first reference minimum speed, the rotation speed derived from the third information signal is higher than the third reference minimum speed and the rotation speed derived from the second information signal is lower than the second reference minimum speed.

REFERENCES:
patent: 4267545 (1981-05-01), Drone et al.
patent: 4320381 (1982-03-01), Olivier
patent: 4615321 (1982-10-01), Haefner et al.
patent: 4939502 (1990-07-01), Ito et al.
patent: 4949078 (1990-08-01), Ito et al.

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