Methods and systems for multi-fuel engine
AssigneeTransportation IP Holdings, LLC
InventorsAdam Edgar Klingbeil, Thomas Michael Lavertu
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for adjusting a location of a fuel injection in response to a substitution rate and a desired EGR flow. In one example, a method may include injecting a first fuel to a combustion chamber via a direct injector positioned to inject directly into the combustion chamber, injecting a second, different, fuel to the combustion chamber via an exhaust port injector positioned to inject toward an exhaust valve of the combustion chamber, and combusting the first and second fuels together in the combustion chamber.
Claims17
A method, comprising:
- injecting a first fuel to a combustion chamber via a direct injector positioned to inject directly into the combustion chamber;
- injecting a different, second fuel to the combustion chamber via an exhaust port injector positioned to inject toward an exhaust valve of the combustion chamber;
- and
- combusting the first and second fuels together in the combustion chamber.
A system, comprising:
- a first fuel system fluidly coupled to direct injectors of a plurality of cylinders and configured to supply a first fuel;
- a second fuel system fluidly coupled to intake port injectors, exhaust port injectors, an exhaust gas recirculation (EGR) passage injector, and a catalyst injector, the second fuel system configured to supply a second fuel different than the first fuel;
- and
- a controller with instructions stored on non-transitory memory that when executed cause the controller to:
- determine a desired substitution rate, wherein the desired substitution rate is a percentage of total fuel energy provided by the second fuel;
- determine a desired EGR flow rate;
- and
- inject the second fuel from the second fuel system via one or more of the intake port injectors, the exhaust port injectors, and the EGR passage injector based on the desired substitution rate and the desired EGR flow rate.
A method, comprising:
- premixing ammonia and exhaust gas recirculation (EGR);
- flowing the premixed ammonia and EGR to a cylinder of an engine;
- and
- flowing the premixed ammonia and EGR through an exhaust valve of the cylinder.
Dependencies are inferred from the claim text.