| 摘要 |
<p>The present invention relates to a variable compression ratio device which can improve mileage and output of an engine by obtaining responsibility. The variable compression ratio device according to an embodiment of the present invention changing capacity of a combustion chamber according to operation of a plunger formed to reciprocate in a space connected to the inside of the combustion chamber upon operation state of the engine, which comprises an operation part operated with oil pressure for the plunger to reciprocate; an oil control valve controlling oil pressure supplied to the operation part; an oil supplying part storing oil supplied to the operation part via the oil control valve, and delivering stored oil to the oil control valve; a solenoid operating the oil control valve; and a controller connected to the oil pump, and controlling the solenoid and the oil pump upon operation state of the engine.</p> |
