A Diagnostic System for Vehicles Based on the Monitoring of Off-Normal Conditions During Day-to-Day Operations 740534
Vehicle diagnostic systems have been proposed which are based on the interrogation of a series of sensors located at critical points of the vehicle by an automatic check-out device which is a part of the service shop equipment. At least one system of this type already is in use on an imported passenger car. Systems also are in existence which provide a series of alarms to warn the operator of certain off-normal conditions which may occur during daily vehicle operation. Many off-normal conditions thus alarmed may never be reported because they are of a momentary or intermittent nature. This type of condition rarely can be detected by means of a checkout on the floor of the service shop. The diagnostic system described monitors off-normal conditions as they occur during day-to-day operation and provides a record of them for use by maintenance people. The simplest form of the system provides only a count of the number of occurrences. A more sophisticated form of the system provides a record of magnitude and duration with a real time base. A modified tachograph has been used in a basic system. A printer or magnetic recording also may be used.
Citation: Rath, H., "A Diagnostic System for Vehicles Based on the Monitoring of Off-Normal Conditions During Day-to-Day Operations," SAE Technical Paper 740534, 1974, https://doi.org/10.4271/740534. Download Citation
Author(s):
H. B. Rath
Pages: 6
Event:
Fleet Week
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Magnetic materials
Sensors and actuators
Tools and equipment
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