Patent ID: 9581101
Date: 2017-02-28
CPC Classifications: F02D

Claim:
1. A method for fuel injection control for an internal combustion engine, comprising: ascertaining an adaptation factor, which represents an aging of fuel, from a model of the fuel and from fuel outgassing via a tank vent; and controlling, using the adaptation factor, at least one of a fuel injection quantity and a fuel injection time of injected fuel; wherein the model of the fuel aging uses as at least one input variable an influencing factor for taking into account ambient temperature fluctuation over time, and wherein the adaptation factor representing aging of fuel is determined additionally by multiplying factors representing a temperature of the internal combustion engine and a temperature of air drawn in through an intake manifold by the internal combustion engine, wherein a fuel aging is computed from an ambient temperature and a fuel mass released through a tank vent, wherein the model of fuel aging outputs a dimensionless factor of fuel aging which is multiplied by a dimensionless factor of an internal combustion engine temperature, which is ascertained from the temperature of the internal combustion engine, wherein a multiplication takes place by a dimensionless factor of intake air, which is ascertained from the temperature of air drawn in by the internal combustion engine through the intake manifold, wherein the adaptation factor has a value of 1 for unaged fuel, and increases with fuel age and outgassing through the tank vent, and wherein the engine is a range extender engine.