| 摘要 |
PURPOSE: A method is provided to alarm tire trouble by sensing reduction of pneumatic pressure of both rear tires by vehicle velocity variation. CONSTITUTION: A system decides if a value subtracting vehicle velocity variation of each front wheel from velocity of each rear wheel is more than standard variation for indicating reduction of pneumatic pressure. A counter value is increased for measuring maintaining time of the state. Then, the system decides if the counted value is more than the standard counted value for indicating reduction of pneumatic pressure. Thus, a rear wheel trouble plug is set and the system gives the alarm.
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