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US 11,480,143 B2Granted
Methods and systems for a ducted injector
AssigneeFord Global Technologies, LLC
InventorChristopher Polonowski
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a ducted fuel injector. In one example, the ducted fuel injector comprises a plurality of passages, with at least one of the passages configured to receive an oxygen poor gas from a reservoir or an adjacent cylinder to decrease a likelihood of pre-ignition in the duct.
Claims20
A system, comprising:
- a rotary engine comprising a ducted fuel injector, the ducted fuel injector comprising a fuel injection passage and a dilute gas passage fluidly coupled to one another downstream and outside of the ducted fuel injector relative to a direction of injection.
An engine system, comprising:
- a combustion chamber of a Wankel engine comprising a ducted fuel injector, wherein the ducted fuel injector comprises a dilute gas passage configured to flow dilute gases into a duct from a dilute gas source directly to a location of the duct downstream of an injection of the ducted fuel injector, wherein the duct is arranged outside of a fuel injector portion of the ducted fuel injector, further comprising a valve configured to adjust a dilute gas flow between the combustion chamber and the dilute gas source, and wherein the ducted fuel injector is positioned to directly inject into the duct;
- and
- a controller comprising computer-readable instructions stored on non-transitory memory thereof that when executed enable the controller to:
- adjust a position of the valve to flow dilute gases from the dilute gas source to the dilute gas passage in response to an intake valve being closed and a combustion process not yet started;
- and
- adjust the position of the valve to flow dilute gases from the combustion chamber to the dilute gas source in response to the combustion process being complete.
3 more elements
A rotary engine, comprising:
- a fuel injector of a combustion chamber comprising a duct, wherein the duct comprises a dilute gas passage fluidly coupled to a fuel injection passage at a portion of the duct downstream and outside of the fuel injector relative to a direction of a fuel injection, wherein the dilute gas passage and the fuel injection passage are fluidly coupled to separate portions of the combustion chamber during some positions of a rotor of the combustion chamber.
Dependencies are inferred from the claim text.