| 摘要 |
An internal combustion engine, in particular a four-stroke engine, in which, at least un cylinder houses a reciprocating piston, comprises, coupled to said at least one cylinder and coaxial to it, a rotary valve providing ports putting into communication induction and exhaust pipes of the head of the engine and a combustion chamber made inside the rotary valve. To said combustion chamber opens a seat, axially made in the top part of the rotary valve, apt to house the sparking plug, in case of petrol engines, or the injector in case of diesel engines. The rotary valve is made rotate by transmission means connected, according to a specific transmission ratio, to the crankshaft. The hollow cavity of the head apt to house the rotary valve provides circular grooves, coaxial to the cylinder, and housing elastic rings pressed by their elastic force on the external surface of the rotary valve. Further grooves for straight seals are made in the head around the apertures of the induction and exhaust pipes. The above said arrangement of the head of an internal combustion engine may easily replace the components of the head of a standard overhead valve engine having cylinders of the same size and layout, and it improves the power of the engine and reduces the consumption. |
