Lubrication device of four-stroke engines

Abstract

A lubricant device of four-stroke engine is provided according to the present invention. The lubricant device is applicable to a four-stroke engine having a cylinder, a crank case, a rocker arm room and a cam room connected to the rocker arm room. The lubricant device mainly has the rocker arm room and the crank case be connected to each other, and the design of alternating oil supply and oil recycling channels enables lubricant mists to cycle from the crank case through the rocker arm room to the cam room, and then be re-absorbed into the crank case, thereby allowing engines to be manipulated at various angles.

1 . A lubrication device of a four-stroke engine having a cylinder, a crank case, a rocker arm room connected to a cam room and a breathing pipe, the crank case having a crankshaft first section and a crankshaft second section connected to each other via a connection portion and move simultaneously, the cylinder having a piston connecting rod connected to a connection part, the lubrication device comprising:
 a lubricant tank connected to a bottom of the crank case, for containing lubricant;   a stirring chamber disposed beneath the crank case and partially disposed inside the lubricant tank, and the stirring chamber being disposed with at least one oil hole connected to the lubricant tank;   an oil stirring rod disposed at one end of the piston connecting rod and received in the stirring chamber, for stirring the lubricant to oil mists; and   
     an exhaust channel comprising an axial aperture disposed on the camshaft and connected to the breathing pipe, and a single radial aperture connected to the axial aperture and the cam room. 
   
   
       2 . A lubrication device of a four-stroke engine having a cylinder, a crank case, a rocker arm room connected to a cam room and a breathing pipe, the cylinder having a piston connecting rod connected to a connection part, the lubrication device comprising:
 a lubricant tank connected to a bottom of the crank case, for containing lubricant;   an oil stirring rod disposed at one end of the piston connecting rod and received in the stirring chamber, for stirring the lubricant to oil mists; and   an exhaust channel comprising an axial aperture disposed on the camshaft and connected to the breathing pipe, and a single radial aperture connected to the axial aperture and the cam room.