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US 9,897,060 B2Granted
Injector arrangement for an internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsFrank Wunderlich, Joerg Kemmerling, Leonhard Bartsch, Juergen Karl Stief, Guohui Chen, Werner Willems
Life of this patent
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Abstract
Methods and systems are provided for an injector arrangement for an internal combustion engine. In one example, an injector arrangement may include an actuator positioned between a fuel injector and a cylinder head, with the actuator configured to adjust a position of the fuel injector relative to the cylinder head in order to adjust a protrusion amount of a fuel nozzle tip within a combustion chamber.
Claims20
An injector arrangement for an internal combustion engine, comprising:
- an injector at least partially arranged in a cylinder head, the injector comprising a tapered region which merges via a shoulder into a wider region;
- a nozzle tip coupled to the injector and arranged at an end of the tapered region of the injector in an axial direction;
- and
- an actuator configured to vary a position of the nozzle tip relative to the cylinder head in the axial direction, with a minimum position and a maximum position of the nozzle tip set by the actuator,
- wherein the actuator rests on the shoulder and at least partially surrounds the tapered region of the injector.
2 more elements
A method, comprising:
- responsive to engine load exceeding a threshold engine load, adjusting a protrusion amount of a nozzle tip of a fuel injector within a combustion chamber, the adjusting including decreasing the protrusion amount as engine load increases and increasing the protrusion amount as engine load decreases;
- and
- responsive to engine load being below the threshold engine load, maintaining the protrusion amount.
A method, comprising:
- responsive to an engine load exceeding a threshold engine load, adjusting an average fuel injector nozzle protrusion amount within a combustion chamber;
- and
- responsive to the engine load being below the threshold engine load, maintaining the average fuel injector nozzle protrusion amount,
- wherein adjusting the average fuel injector nozzle protrusion amount includes protruding a nozzle tip by an increased amount during at least one of an intake stroke and a compression stroke of a single cylinder cycle, and includes not protruding the nozzle tip by the increased amount during at least one of an expansion stoke and an exhaust stroke of the single cylinder cycle.
1 more element
Dependencies are inferred from the claim text.