| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine lubrication control system for adjusting an oil pressure supplied to each supply flow passage for delivering lubrication oil provided in a lubrication oil supply device.SOLUTION: An engine lubrication control system includes an engine, an oil pump 9 driven by the engine, an oil circuit S connected downstream of the oil pump 9, and a plurality of oil supply branch passages Sk branched from the oil circuit S to supply oil to each engine component. An electronic control type first oil pressure control valve B is arranged in the oil circuit S to control a discharge pressure of the oil pump 9 in stages with respect to an engine speed, and a hydraulic drive type second oil pressure control valve A is arranged in at least one of the oil supply branch passages Sk. An oil pressure downstream of the second oil pressure control valve A is controlled at least over a predetermined range of the engine speed to be lower than an oil pressure downstream of the first oil pressure control valve B in the oil circuit S. |
