| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an engine estimation device that is low in cost and high in reliability. <P>SOLUTION: A current detection part (41) and a voltage detection part (42) respectively detect a current value and a voltage value output by an engine generator (1). An operation part (5) determines a weighting constant based on the current value and the voltage value, weights operation hours of an engine (11) using the weighting constant, and calculates integration hours by integrating the weighted operation hours. A determination part (6) compares the integration hours with reference hours, and when determined that the integration hours exceeds the reference hours, notifies an information part (8) of that. The notified information part (8) announces it externally. Since the current detection part (41) and the voltage detection part (42) can be constituted by an electric circuit, an engine life can be estimated at low cost and with high reliability. <P>COPYRIGHT: (C)2012,JPO&INPIT |
