| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid valve control device for actualizing low power consumption by driving an solenoid valve which excites an internal coil with a driving current flowing therein to attract a movable valve to be opened, while absorbing an individual difference (a property difference) on the basis of each valve. SOLUTION: Before equipment with the built-in solenoid valve is offered as a product into a market or during initial operation when it is used as the product, the driving current is applied while gradually increasing a pulse width W1 of a driving pulse Po which drives the solenoid valve, to detect a pulse width Wo where the solenoid valve is surely opened, which is stored as an open driving pulse width Wo. On the next operation or later, an open driving current is applied which has a pulse width determined in accordance with the stored open driving pulse width Wo. COPYRIGHT: (C)2007,JPO&INPIT
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