| 摘要 |
<p>PURPOSE:To improve durability of a solenoid by placing it in an inoperative condition despite the other condition in the case of an oil pressure, which is a control object of the duty ratio-controlled solenoid, being in not more than a predetermined value. CONSTITUTION:In a control device for a vehicle hydraulic unit, an oil pressure- adjusting solenoid is duty ratio-controlled, and a line pressure from an oil pump, driven by an engine, is adjusted. Here in the case of an oil pressure, which is a control object of the solenoid, being not more than a predetermined value, that is, in the case of a condition that the engine is stopped with the oil pump not in rotation, action of the solenoid is inhibited by a solenoid action inhibiting means. Thus by preventing generation of so-called no-load action of the solenoid, its durability can be improved.</p> |
