Of four-stroke autocycle engine lubricant the means that presses supply lube, can divide for force-feed lubrication and splash lubrication two kinds. Inchoate engine uses splash lubrication generally, use oil of brace agitate motive, swing drop of engine oil oil to hair machine each each parts is lubricant. To increase the oily amount that splashs, design brace longerly commonly. Splash lubrication has the advantage with simple structure, benefit at engine light quantify. But lubricant effect often poorer, especially to each bearing character, from exterior swing oil to undertake very hard lubricating adequately. Carry buy valve engine on the head to what come after especially, swing the engine oil short of that go out to be located in air cylinder to build each parts that go up. To using the motor of one-piece crankshaft and plain bearing liner, put in the problem that does not lubricate as much. In addition, as engine rotate speed rise, the resistance that brace swings oily generation is greater and greater, produce bigger dynamical loss. In the meantime, brace swings oil to also will make engine oil inchoate ageing, make easily in bleb interfuse engine oil. To solve above problem, contemporary engine used the means of force-feed lubrication mostly. Increase lubricating oil pump on engine namely, the pressure that uses oil pump lubricates supply of engine oil compulsorily a little bit each. To simplify as far as possible engine constructs, force-feed lubrication is used with splash lubrication union commonly. For example, on engine, the position that uses force-feed lubrication truly is centered in crankshaft the component such as each journal, camshaft, and connecting rod small head, air cylinder, piston, rocker is to use the engine oil that splashs after force-feed lubrication to undertake lubricating. CNC MillingCNC Machining