| abstract |
A kind of oxygen supplement supercharging mixed flow air intake structure of cylinder cap of single-cylinder diesel engine, air intake duct open pore is elliptical aperture, the center of elliptical aperture is in the lower surface institute in inlet valve tappet hole planar, its major diameter is that inlet valve tappet hole guiding length subtracts 5～8 millimeters, minor axis is 1.1～1.5 times of inlet valve seat ring 3 internal diameter, major diameter and minor axis that air intake duct is oval are the most decrescence, the length of inlet end cross section ellipse is identical with air intake duct open pore respectively with minor axis, outlet side is identical with the endoporus of inlet valve seat ring, the upper cambered surface of the air intake duct center by lower surface, inlet valve tappet hole, along air intake duct inner hole wall, the gas flow guiding convex tendon promoting air inlet to rotate it is provided with between air intake duct and inlet valve seat ring.It can not only increase air inflow in low resistance ground, improve admission pressure, and the air in entrance cylinder can be made to produce and rotate so that sufficiently mix between mist of oil and the air of rotation in spraying into cylinder, promote oil plant fully to burn, improve the discharge environmental protection index of diesel engine. |