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AssigneeSouthwest Research Institute
InventorsJohn C. Hedrick, David P. Branyon, Timothy J. Callahan, Jeremy D. Eubanks, Ryan C. Roecker, Garrett L. Anderson
Estimating the term…
A method, used with dual-fuel engine, of controlling the amount of gaseous fuel delivered to the engine. At operating conditions that result in an equivalence ratio below a predetermined threshold (which typically occur at mid or part loads), it is determined whether better performance and/or lower emissions can be achieved by reducing gaseous fuel to some cylinders and increasing gaseous fuel to others. Typically, the gaseous fuel is reduced to zero to a number of cylinders and increased to others, with the increase resulting in an equivalence ratio that will provide improved emissions and efficiency and the desired engine output.
A method of fueling a dual-fuel internal combustion engine, the engine being fueled with both gaseous fuel and diesel fuel, and the engine being configured so that the amount of gaseous fuel delivered to its cylinders can be controlled individually or in groups of cylinders, comprising:
A controller for controlling the amount of gaseous and diesel fuel delivered to a dual-fuel internal combustion engine, the engine being fueled with both gaseous fuel and diesel fuel, and the engine being configured so that the amount of gaseous fuel delivered to its cylinders can be controlled individually or in groups of cylinders, comprising:
Dependencies are inferred from the claim text.