| 摘要 |
The purpose of the present invention is to provide a technique of discharging oil removed between a piton and a cylinder bore to the outside by separating and discharging the oil in accordance with a removed oil containing degree of exhaust gas. A system for preventing engine oil-up gives an order to remove the oil positioned between the piston and the cylinder bore when operating pressure of a cylinder of an engine is small during low-load driving or low-speed driving when the engine is operated through a controller. An oil-up preventing groove and a suction hole are positioned in a land unit of the piston to remove oil between the piston and the cylinder bore, and the removed oil is moved to an oil collecting device through a flow passage connected to the outside of the cylinder. |
