| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress shortage of oil supply in an abnormality of a control system of a flow control valve in an oil flow controller which switches flow characteristics of oil to an object to which the oil is supplied by the flow control valve.SOLUTION: A flow control valve is controlled so as to supply oil by a first flow characteristic of comparatively high flow when a control signal from a transistor 26 to a drive solenoid 25 is at a low level or the control signal is not output, and to supply the oil by a second flow characteristic of comparatively low flow when the control signal is at a high level or the control signal at a predetermined level is output, and when it is determined that there is an abnormality in a control system to the flow control valve, sets the control signal to the low level, or stops output of the control signal.</p> |
