METHOD FOR PERFORMING A DIAGNOSTIC TEST OF AN ALTERNATOR IN A VEHICLE, TEST ARRANGEMENT AND VEHICLE
First Claim
1. A method for performing a diagnostic test of an alternator of a vehicle comprising an internal combustion engine arranged to drive the alternator and the driven alternator being arranged to charge a battery via an electrical connection thereto, the method comprising:
- running the internal combustion engine at idle speed;
providing, by a control unit, a signal representative of a pre-determined environmental condition to the alternator;
providing, by the alternator, an output voltage and output current to the battery based on the pre-determined environmental condition;
determining, by a sensor connected to the battery, a battery voltage;
providing the determined battery voltage to the control unit;
comparing, by the control unit, the determined battery voltage with a pre-defined reference-voltage representative of the pre-determined environmental condition; and
outputting, by the control unit, an approved test result if the difference between the determined battery voltage and the pre-defined reference voltage falls within a predetermined range.
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Accused Products
Abstract
A method for performing a diagnostic test of an alternator, a test arrangement and a vehicle are provided. The method may include running an engine, providing a signal representative of a pre-determined environmental condition to the alternator, providing an output voltage and output current to a battery based on the pre-determined environmental condition, and determining a battery voltage. The method may also include comparing the determined battery voltage with a pre-defined reference-voltage representative of the pre-determined environmental condition and outputting an approved test result if the difference between the determined battery voltage and the pre-defined reference voltage falls within a predetermined range.
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Citations
20 Claims
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1. A method for performing a diagnostic test of an alternator of a vehicle comprising an internal combustion engine arranged to drive the alternator and the driven alternator being arranged to charge a battery via an electrical connection thereto, the method comprising:
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running the internal combustion engine at idle speed; providing, by a control unit, a signal representative of a pre-determined environmental condition to the alternator; providing, by the alternator, an output voltage and output current to the battery based on the pre-determined environmental condition; determining, by a sensor connected to the battery, a battery voltage; providing the determined battery voltage to the control unit; comparing, by the control unit, the determined battery voltage with a pre-defined reference-voltage representative of the pre-determined environmental condition; and outputting, by the control unit, an approved test result if the difference between the determined battery voltage and the pre-defined reference voltage falls within a predetermined range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12, 14, 15, 16, 17, 18, 19, 20)
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10. A test arrangement for performing a diagnostic test of an alternator of a vehicle comprising an internal combustion engine arranged to drive the alternator and the alternator being arranged to charge a battery via an electrical connection thereto, and wherein the battery is connected to a battery sensor for determining at least one of battery voltage, voltage of respective battery cells, and current load, the test arrangement comprising:
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a control unit configured to provide a signal representative of a pre-determined environmental condition to the alternator; wherein the alternator, when driven by the idling internal combustion engine, is configured to provide an output voltage and output current to the battery based on the pre-determined environmental condition; wherein the sensor is configured to determine a battery voltage and to provide the determined battery voltage to the control unit; and wherein the control unit is arranged to compare the determined battery voltage with a pre-defined reference-voltage representative of the pre-determined environmental condition and to output an approved test result if the difference between the determined battery voltage and the pre-defined reference voltage falls within a predetermined range. - View Dependent Claims (11, 13)
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Specification