Patent ID: 9057294
Filing Date: 2015-06-16
Classification: F01M

Abstract:
1. An engine provided with a lubricating structure, comprising: a crankcase having a crank chamber; a crankshaft disposed in the crank chamber of the crank case and having a crank web with a side surface thereof perpendicular to the crankshaft; and a lubricating structure for lubricating an oil to components in the engine, the lubricating structure including an oil reservoir communicating with the crank chamber through an oil discharge port formed to a bottom portion of the crank chamber, and an oil discharge groove formed to a side surface of the crankcase continuous to the bottom portion of the crank chamber and configured to discharge oil flying from the crank web into the oil reservoir, the oil discharge groove being provided in a side wall of the crankcase facing the side surface of the crank web in the crank chamber and configured such that the oil discharge groove is provided to be shallow in the vehicle width direction in an upper part of the oil discharge groove thereof and to gradually deepen towards a lower part of the oil discharge groove thereof.