Patent ID: 6848428
Filing Date: 2005-02-01
Classification: F02D,Y02T

Abstract:
1. A fuel injection control system for an internal combustion engine, the internal combustion engine including an intake pipe equipped with a throttle valve, an upstream fuel injection valve provided upstream from the throttle valve, and a downstream fuel injection valve provided downstream from the throttle valve, said fuel injection control system comprising: means for controlling a fuel injection quantity of each of the fuel injection valves on the basis of plural parameters including a throttle opening and engine speed; and means for detecting an accelerated driving state to increase and correct the quantity of injection fuel, wherein said increase in quantity and correction increases the injection quantity of said downstream fuel injection valve, wherein said means for controlling the fuel injection quantity of each of the fuel injection valves further comprises means for determining a total injection quantity of the fuel injection valves and means for determining an injection rate of each of the fuel injection valves on the basis of the throttle opening and the engine speed, and wherein said means for controlling the fuel injection quantity of each of the fuel injection valves further comprises means for calculating a total correction factor on the basis of plural parameters including manifold air pressure intake temperature and cooling water temperature.