Patent ID: 9188076
Filing Date: 2015-11-17
Classification: F02D

Abstract:
1. A fuel injection control system comprising: a first injector for injecting a fuel to an air-intake passage to supply the fuel to an engine; a second injector for injecting the fuel to the air-intake passage to supply the fuel to the engine, the second injector being positioned upstream of the first injector in an air flow direction; a memory section which contains a fuel injection ratio map for defining a correspondence between a running state of the engine, and a fuel injection ratio of the first injector and a fuel injection ratio of the second injector with respect to a total fuel injection amount of the fuel injected from the first injector and the fuel injected from the second injector; a fuel injection ratio setting section for setting the fuel injection ratio of the first injector as a first set value and the fuel injection ratio of the second injector as a second set value, according to the running state of the engine, with reference to the fuel injection ratio map; a fuel injector control section for controlling a fuel injection amount of the first injector according to the first set value, and a fuel injection amount of the second injector according to the second set value; and a fuel injection ratio compensation section for making compensation such that the first set value is greater than a value of the fuel injection ratio of the first injector which is derived from the fuel injection ratio map, when a condition in which the fuel injection ratio of the second injector which is read out from the fuel injection ratio map according to the running state of the engine is greater in magnitude than a predetermined determination criterion is met.