Systems and methods for adjustable pre-chamber
AssigneeFord Global Technologies, LLC
InventorsMichael Damian Czekala, Thomas Leone
Life of this patent
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Abstract
Methods and systems are provided for a pre-chamber. In one example, the pre-chamber includes a moveable element configured to adjust an orifice opening area of the pre-chamber in response to conditions.
Claims16
A system, comprising:
- a pre-chamber including a plurality of first openings and a plurality of second openings;
- and
- a plurality of shutters configured to adjust an opening area of only the plurality of second openings, wherein each of the plurality of shutters is actuated individually.
An engine system, comprising:
- a pre-chamber comprising an interior volume separated from a combustion chamber via walls of both a pre-chamber cap and a pre-chamber sleeve;
- each of a plurality of first openings and a plurality of second openings arranged in the pre-chamber sleeve;
- and
- a rotatable element configured to adjust an opening area of only the plurality of second openings, wherein an opening area of the plurality of first openings is fixed, and wherein the rotatable element comprises a plurality of openings, and wherein the opening area of the plurality of second openings is based on an alignment between the plurality of second openings and the plurality of openings, and wherein the rotatable element includes the pre-chamber cap and the pre-chamber sleeve, wherein an actuator is coupled to the rotatable element via a linkage.
A method for an engine system comprising a pre-chamber arranged in a cylinder, the pre-chamber including a plurality of openings and a plurality of moveable elements, the engine system further comprising a controller with computer-readable instructions stored on non-transitory memory thereof that when executed enable the controller to execute the method, the method, comprising:
- adjusting an opening size of each the plurality of openings via the plurality of moveable elements in response to one or more of an engine load, an engine speed, an engine temperature, an exhaust-gas recirculation (EGR) flow rate, and a valve timing, wherein each of the plurality of moveable elements is actuated individually.
Dependencies are inferred from the claim text.