Brennstoffventil für einen Grossen Turbogeladenen Zweitakt-Kreuzkopfverbrennungsmotor

Details

Veröffentlichungs-Nr.

EP4733572

Anmeldetag

24. Oktober 2024

Veröffentlichung

29. April 2026

Rechtsraum

EP

Abstract

Described is a fuel valve (30) for injection of fuel into a combustion chamber (14) of a large turbocharged two-stoke uniflow crosshead internal combustion engine, said fuel valve (30) comprising an elongated fuel valve housing (32) with a longitudinal axis (X), a rear end (31) and a front end (33), an elongated nozzle (40) having a bore (50) and a closed end (44), which bore (50) opens into at least one through-going opening (45), said nozzle (40) being arranged at the front end of said housing (32), an axially displaceable valve needle (35) with a hollow cut-off shaft (37) received axially displaceable between a open position and a closed position in said bore (50) in the nozzle (40) for opening and closing access to said at least one opening (45), said cut-off shaft (37) is provided with a plurality of holes (49) so as to connect said at least one opening (45) in the nozzle (40) to the interior of the hollow cut-off shaft (37) in said open position of the hollow cut-off shaft (37) and to disconnect said at least one opening (45) in the nozzle from the interior of the hollow cut-off shaft (37) in said closed position of the hollow cut-off shaft (37). The fuel valve (30) is peculiar in that said plurality of holes (49) in said cut-off shaft (37) have a total cross sectional area that is smaller than a total cross sectional area of said at least one opening (45). Hence, by providing the opening or openings (45) in the nozzle (40) with a larger total cross sectional area than the holes (49) in the cut-off shaft (37), said holes in the cut-off shaft are made to actual nozzle holes and the problems relating to development of cracks in the nozzle (40) are reduced.

Anmelder

Firma

Everllence, filial af Everllence SE, Tyskland

Land

🇩🇰 Dänemark