Automatic variator of valve overlap or timing and valve section.

摘要

An automatic variator for use in an internal combustion engine and other engines which use valve-type distribution systems, to operate a twin set of double-effect distribution sequential valve shafts for the purpose of regulating the valve overlap or timing and the valve opening section or to operate a double overhead camshaft with poppet valves for the purpose of regulating valve overlap or timing while the engine is running. A motor reducer advances (42) a spindle (44) against the valve shaft with a grooved screw (41) at one end of the same, causing the shaft to turn and move, thereby varying the valve overlap or the valve section and valve overlap.