System and method for compensating fuel mass based on oil dilution
AssigneeFca US LLC
InventorsNicholas Firsich, David Pedro, William B Attard
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Abstract
A control system for controlling fuel delivery to an internal combustion engine (ICE) based on oil diluted by fuel in a crankcase of the ICE includes a fuel injector and a controller. The controller is configured to determine a modeled evaporation rate of unburned fuel in the crankcase; compare the modeled evaporation rate of unburned fuel to a threshold; and communicate a fuel delivery signal indicative of an injector fuel mass target to the fuel injector to compensate the fuel injected based on the modeled evaporation rate of the unburned fuel in the crankcase exceeding the threshold.
Claims16
A control system for controlling fuel delivery to an internal combustion engine (ICE) based on oil diluted by fuel in a crankcase of the ICE, the control system comprising:
- a fuel injector that delivers an amount of fuel as fuel injected to a combustion chamber of the internal combustion engine;
- a controller configured to:
- determine a modeled evaporation rate of unburned fuel in the crankcase;
- compare the modeled evaporation rate of unburned fuel to a threshold;
- and
- communicate a fuel delivery signal indicative of an injector fuel mass target to the fuel injector to compensate and therefore alter an amount of fuel injected into the combustion chamber based on the modeled evaporation rate of the unburned fuel in the crankcase exceeding the threshold.
A method for controlling fuel delivery with a fuel injector that delivers an amount of fuel to a combustion chamber of an internal combustion engine (ICE) based on oil diluted by fuel in a crankcase of the ICE, the method comprising:
- determining a modeled evaporation rate of unburned fuel in the crankcase;
- comparing the modeled evaporation rate of unburned fuel to a threshold;
- and
- communicating a fuel delivery signal indicative of an injector fuel mass target to the fuel injector to compensate and therefore alter an amount of fuel injected into the combustion chamber based on the modeled evaporation rate of the unburned fuel in the crankcase exceeding the threshold.
Dependencies are inferred from the claim text.