Engine management system
First Claim
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1. A method for providing a predetermined management item relating to an engine, comprising the steps of:
- storing a weighted operating time for each of a plurality of running conditions of said engine, said weighted operating times being a product of a respective predetermined weighting coefficient and a respective operating time;
summing said weighting operating times to produce a total weighted operating time; and
indicating a corresponding predetermined management item when said total weighting operating time reaches a predetermined value.
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Abstract
An engine management system stores the operating time when a warning about the engine occurs, and stores the operating time when the warning is cancelled and stores various engine information at the occurrence of a warning or from the occurrence of a warning to the end of the warning.
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Citations
14 Claims
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1. A method for providing a predetermined management item relating to an engine, comprising the steps of:
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storing a weighted operating time for each of a plurality of running conditions of said engine, said weighted operating times being a product of a respective predetermined weighting coefficient and a respective operating time;
summing said weighting operating times to produce a total weighted operating time; and
indicating a corresponding predetermined management item when said total weighting operating time reaches a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for providing a predetermined management item relating to an engine comprising:
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means for storing a weighted operating time for each of a plurality of running conditions of said engine, said weighted operating times being a product of a respective predetermined weighting coefficient and a respective operating time;
means for summing said weighting operating times to produce a total weighted operating time; and
means for indicating a corresponding predetermined management item when said total weighting operating time reaches a predetermined value. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An engine management system for an engine, comprising:
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means for storing data relating to said engine wherein an upper limit of a recommended number of engine revolutions or an upper limit of a recommended load are preset in said means for storing for a running-in process of said engine based on a total operating time of said engine, or based on a distance-related value of said engine and whereby the number of engine revolutions or load of said engine is judged to exceed said upper limit;
means for performing a predetermined indication when said upper limit is exceeded; and
control means for lowering the number of engine revolutions when the engine continues to be run for more than a certain period of time with a speed or load exceeding a predetermined value. - View Dependent Claims (14)
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Specification