| 摘要 |
<p>PROBLEM TO BE SOLVED: To maintain the performance of a vehicle safety by integrating the using time and the using frequencies of the parts of the vehicle and discriminating an exchanging time when the integrated value exceeds a prescribed value so as to positively urging a user to exchange the parts. SOLUTION: An electronic control unit ECU is composed of a microcomputer, e.g. as an integration means and a discriminating means to store the using time of a power pump 8 and the using frequencies of first and second relays 9 and 10 in a memory. Then when the power pump 5 and the relays 9 and 10 are used again, ECU integrates the using time and frequencies with those of previously stored in the memory to store in the memory again. Then ECU compares them respectively with the regulated values showing the exchanging time stored in the memory, namely a durable using time and using frequencies, and when the integrated value reaches the regulated value, ECU displays that an exchanging time of the pump 5 and the relays 9 and 10 are reached. Thereby the exchanging time of the parts for the vehicle which can not be seen directly is informed to the user.</p> |
