Engine malfunction detection system
First Claim
1. A system for detecting malfunction of an equipment that is connected to an internal combustion engine and generates an output comprising:
- output discriminating means for discriminating periodically for a predetermined period of time whether the output of the equipment is within a predetermined range;
counting means for counting a number of times that the output of the equipment is discriminated to be out of the predetermined range; and
malfunction determining means for comparing the count with a reference value and for determining that the equipment has malfunctioned when the count is equal to or greater than the reference value.
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Accused Products
Abstract
A system for detecting malfunction of an equipment such as an alternator or a hydraulic switch that is connected to an internal combustion engine and generates an output. In the system, it is discriminated periodically for a predetermined period of time whether the output of the equipment is within a predetermined range, a number of times that the output of the equipment is discriminated to be out of the predetermined range is counted; and the equipment is determined to have malfunctioned when the count is equal to or greater than the reference value. With this, it becomes possible to detect the malfunction of the equipment accurately.
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Citations
12 Claims
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1. A system for detecting malfunction of an equipment that is connected to an internal combustion engine and generates an output comprising:
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output discriminating means for discriminating periodically for a predetermined period of time whether the output of the equipment is within a predetermined range;
counting means for counting a number of times that the output of the equipment is discriminated to be out of the predetermined range; and
malfunction determining means for comparing the count with a reference value and for determining that the equipment has malfunctioned when the count is equal to or greater than the reference value. - View Dependent Claims (2, 3, 4, 5, 11)
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6. A method of detecting malfunction of an equipment that is connected to an internal combustion engine and generates an output;
- comprising the steps of;
discriminating periodically for a predetermined period of time whether the output of the equipment is within a predetermined range;
counting a number of times that the output of the equipment is discriminated to be out of the predetermined range; and
comparing the count with a reference value and for determining that the equipment has malfunctioned when the count is equal to or greater than the reference value. - View Dependent Claims (7, 8, 9, 10, 12)
- comprising the steps of;
Specification