Arrangement for monitoring rotational speed sensor

Details Arrangement for monitoring rotational speed sensor Arrangement for monitoring rotational speed sensor

1991-05-24

1993-03-30

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

G01M 1500

Patent

active

051973260

ABSTRACT:
An arrangement for monitoring a rotational speed sensor of an internal combustion engine having a starter and a rotational speed sensor which supplies an output signal in dependence on a rotational speed, has a unit for measuring a vehicle electrical system voltage, and a control device in which an output signal of the rotational speed sensor is related to a vehicle electrical system voltage and an error operation of the rotational speed sensor is monitored. The measuring unit and the control device are formed so that for error recognition a course of the vehicle electrical system voltage is evaluated during a starting process of the internal combustion engine, and an error recognition is released only when a typical course of a starting process for the vehicle electrical system voltage is recognized and simultaneously no output signal of the rotational speed sensor is recognized.

REFERENCES:
patent: 4809540 (1989-03-01), Lackner et al.

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