2 A LARGE TWO-STROKE UNIFLOW SCAVENGED GASEOUS FUELED ENGINE

摘要

A large two-stroke turbocharging uniflow scavenging internal combustion engine comprises: a combustion chamber divided into a cylinder liner (1), a piston (10), and a cylinder cover (22); a scavenging port (18) arranged at the cylinder liner (1); at least one ventilation valve (4) arranged at the cylinder cover (22); at least one fuel valve (30, 31) arranged at the cylinder liner (1) to spray gaseous fuel into the combustion chamber; and a pressurized gaseous fuel supply source (40) and a supply source (44) supplying pressurized gas which does not radiate heat to the fuel valve (30). The engine is organized to spray the gaseous fuel and the gas which does not radiate heat through the fuel valve (30, 31) into the combustion chamber.