Step valve seat cylinder head, for an IC motor, has a step structure for the gas outlet valve seat over the air intake, for an automatic change after the second stroke and a shaped outlet channel for non-hazardous emissions

摘要

The step valve seat cylinder head (A), for an internal combustion motor, has a valve seat (C) in the gas outlet channel (B) in a step structure over the valve seat in the air intake channel (D). The gas outlet channel is formed by two equal and opposing obtuse angles. The gas outlet channel is given an under side in a truncated cone (Ba,Bb) to take the valve seat. The cylinder head uses four-valve assemblies for the cylinder combustion zones (Bb1,Bb2), with the air channels between them.