Patent ID: 8656896
Filing Date: 2014-02-25
Classification: F02D

Abstract:
1. A control apparatus for an internal combustion engine operable on blended fuel that contains a plurality of components, comprising: a delivery pipe through which the fuel is distributed to fuel injectors for multiple cylinders; a fuel supply passage through which the fuel is supplied to the delivery pipe from a fuel tank in which the fuel is stored; a fuel property sensor that is provided in the fuel supply passage, and that detects a component ratio of the fuel; a fuel property value calculator that calculates an injector fuel property value for each of the cylinders, the injector fuel property value being a value related to the component ratio of the fuel near each of the fuel injectors, using the component ratio detected by the fuel property sensor a period of time ago, which is equal to an amount of time required for the fuel to travel from the fuel property sensor to each of the fuel injectors, as a value corresponding to the present component ratio of the fuel near the corresponding injector; and an engine-restart-time fuel injection amount calculator that calculates a fuel injection amount for each of the cylinders based on an engine-off duration that is a time period from stop of the internal combustion engine to restart of the internal combustion engine, in a case where the internal combustion engine is restarted after the internal combustion engine is stopped when the injector fuel property value calculated by the fuel property value calculator varies from cylinder to cylinder.