| 摘要 |
PURPOSE:To extend a life of oil by decreasing overhanging laterally outward of an out-crank chamber oil storage, so that a device can be applied also for a multicylinder engine without generating a pulsating pressure in the crank chamber, and further to decrease deterioration of oil. CONSTITUTION:An out-crank chamber oil storage 58 is additionally provided in a side face external part in an opposite side to a cylinder 21 of a crank chamber 51 of an horizontal engine E. A side wall 60 on a distant side from the cylinder 21 of this out-crank chamber oil storage 58 is formed almost along a shaft orthogonal surface to a cylinder axial center 20. An in-crank chamber oil receiver 52 is provided in the crank chamber 51, to communicate with the out-crank chamber oil storage 58 through an interchamber communication part 61. A blowby gas pressure Pb generated in the crank chamber 51 is utilized to constitute an interchamber oil transfer means P, and oil in the crank chamber 51 is transferred to the out-crank oil storage 58. |
