US 12,404,827 B2
Fuel injector of an internal combustion engine and combustion engine
Thomas Atzkern, Augsburg (DE); and Dusan Mikeska, Munich (DE)
Assigned to Everllence SE, Augsburg (DE)
Filed by MAN Energy Solutions SE, Augsburg (DE)
Filed on Apr. 30, 2024, as Appl. No. 18/650,503.
Claims priority of application No. 10 2023 111 573.1 (DE), filed on May 4, 2023.
Prior Publication US 2024/0369032 A1, Nov. 7, 2024
Int. Cl. F02M 47/02 (2006.01); F02M 61/14 (2006.01)
CPC F02M 47/022 (2013.01) [F02M 61/14 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A fuel injector for an internal combustion engine, and configured to feed fuel to a cylinder of the internal combustion engine, comprising:
a housing, via which the fuel injector can be mounted to the internal combustion engine;
a valve stem;
a guide and seat body comprising a valve seat;
a valve body that engages with the valve stem and which interacts with the valve seat, and which for opening a fuel flow is moveable relative to the valve seat;
a bellows seal, which with a first end that engages with the valve stem and a second end that engages with the housing; and
a sleeve body which with a first end that engages with the guide and seat body and a second end that engages with the housing and which at least partially decouples the bellows seal from a fuel flow through the fuel injector and from fuel pressure pulsations,
wherein
the sleeve body divides a fuel space within the housing into a first sub-space and a second sub-space,
the fuel flow to the valve seat is entirely through the first sub-space, and
the bellows seal is arranged in the second sub-space.