METHOD AND APPARATUS TO EVALUATE A STARTING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
First Claim
1. Method for evaluating a starting system for an internal combustion engine, the starting system including a starter motor and a battery, comprising:
- detecting a fault associated with the starter motor when a minimum starting system voltage during a cranking event is greater than a threshold minimum starting system voltage determined in relation to an engine acceleration parameter; and
detecting a fault associated with the battery when the engine acceleration parameter is less than a minimum threshold for the engine acceleration parameter.
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Accused Products
Abstract
A starting system for an internal combustion engine includes a starter motor and a battery. A method for evaluating the starting system includes detecting a fault associated with the starter motor when a minimum starting system voltage during a cranking event is greater than a threshold minimum starting system voltage determined in relation to an engine acceleration parameter, and detecting a fault associated with the battery when the engine acceleration parameter is less than a minimum threshold for the engine acceleration parameter.
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Citations
18 Claims
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1. Method for evaluating a starting system for an internal combustion engine, the starting system including a starter motor and a battery, comprising:
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detecting a fault associated with the starter motor when a minimum starting system voltage during a cranking event is greater than a threshold minimum starting system voltage determined in relation to an engine acceleration parameter; and detecting a fault associated with the battery when the engine acceleration parameter is less than a minimum threshold for the engine acceleration parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Method for evaluating a starting system for an internal combustion engine, the starting system including a starter motor and a battery, comprising:
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cranking the engine; monitoring engine speed, cranking time, and battery voltage during engine cranking; determining an engine acceleration parameter corresponding to the engine speed and the cranking time; determining a minimum battery voltage during engine cranking; and detecting a fault associated with the starter motor only when the minimum battery voltage during engine cranking is greater than a threshold cranking voltage corresponding to the engine acceleration parameter. - View Dependent Claims (10, 11, 12)
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13. Method for evaluating a starting system for an internal combustion engine, the starting system including a starter motor and a battery, comprising:
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cranking the engine; monitoring engine speed, cranking time, and battery voltage during engine cranking; determining an engine acceleration parameter corresponding to the engine speed and the cranking time; determining a minimum battery voltage during engine cranking; and detecting a fault associated with the battery only when the minimum battery voltage during engine cranking is less than a threshold cranking voltage corresponding to the engine acceleration parameter and the engine acceleration parameter is less than a minimum threshold for the engine acceleration parameter. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification