Back to results
US 11,293,338 B2Granted
Methods and systems for an ignition arrangement of an internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsOliver Berkemeier, Maziar Khosravi
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a prechamber. In one example, the prechamber comprises one or more valves for optionally adjusting gas flow therethrough. The one or more valves may allow pre-chamber and combustion chamber settings to be modified, thereby enhancing combustion operating parameters.
Claims19
A system, comprising:
- a pre-chamber comprising a first passage fluidly coupled to an inlet passage and a second passage fluidly coupled to an exhaust passage, wherein an ignition device is configured to provide a spark directly into an interior volume of the pre-chamber, wherein fuel is not injected into the pre-chamber.
An engine system, comprising:
- a fuel injector and a spark plug, wherein the spark plug is positioned to provide a spark directly to an interior volume of a pre-chamber, wherein the pre-chamber is fluidly coupled to a combustion chamber via a plurality of openings, an intake passage via a first passage, and an exhaust passage via a second passage, and wherein a first valve is arranged in the first passage and a second valve is arranged in the second passage.
A system of a spark-ignited engine, comprising:
- a pre-chamber configured to at least partially house a spark plug and receive a spark therefrom, wherein the pre-chamber comprises a first passage fluidly coupled to a portion of an inlet channel upstream of an inlet valve relative to a direction of gas flow, and wherein the pre-chamber comprises a second passage fluidly coupled to a portion of an exhaust channel downstream of an exhaust valve relative to a direction of gas flow;
- and
- a controller with computer-readable instructions stored on non-transitory memory thereof that when executed enable the controller to:
- adjust an operation of a first valve in the first passage or an operation of a second valve in the second passage in response to engine conditions.
1 more element
Dependencies are inferred from the claim text.