| 摘要 |
In the present invention, an oil jet (45) is provided in each cylinder in the lower part of a cylinder block (5). The oil jet (45) has a first injection nozzle (46) that injects lubricating oil toward the back of a piston (2) when a pressure control valve (51A) opens and a second injection nozzle (47) that injects lubricating oil toward the connection part of a lower link (7) and a control link (9) from the side of the control link (9), which is a direction perpendicular to the axis of a crankshaft, when a pressure control valve (51B) opens. Because of these features, lubricating oil can be continuously supplied to the connecting portions of the lower link (7) and the control link (9). |
