A fuel valve for large turbocharged two stroke diesel engines

DRIVE January 9, 2013
Source
A fuel valve (1) for injecting fuel into the combustion chamber of a large turbocharged two stroke diesel engine, with a resiliently biased and axially movable valve needle (20) cooperating with a valve seat (22) including a hollow cut-off shaft (40), a plurality of nozzle holes (35) distributed axially and radially over the nozzle (30), whereby the number of nozzle holes (35) that is open increases with increased lift of the axially movable valve needle (20) and the hollow cut-off shaft (40) so that the amount of lift of the axially movable valve needle (20) determines how many nozzle holes (35) are open during fuel injection and thereby determines the available flow through area during fuel injection. The axially movable valve needle (20) of the fuel valve (1) is operably connected to a linear actuator (85) for providing lift of the axially movable valve needle (20).

Discussion in the ATmosphere

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