Fuel injector of an internal combustion engine and combustion engine
AssigneeEverllence SE
InventorsThomas Atzkern, Dusan Mikeska
Life of this patent
Estimating the term…
Abstract
A fuel injector for an internal combustion engine, which is configured for feeding fuel to a cylinder, having a housing, via which the fuel injector can be mounted to the internal combustion engine, a valve body engaging with a valve stem interacting with a valve seat, which can be moved relative to the valve seat for opening a fuel flow, having a bellows sealing element, which with a first end engages with the valve stem and with a second end with the housing, a sleeve body, which at least partly decouples the bellows sealing element from a fuel flow through the fuel injector and from fuel pressure pulsations.
Claims10
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.
An internal combustion engine, comprising:
- cylinders;
- and
- a fuel injector for each cylinder 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 to is entirely through the first sub-space, and
- the bellows seal is arranged in the second sub-space.
Dependencies are inferred from the claim text.