Patent ID: 6711893
Filing Date: 2004-03-30
Classification: B01D,F02B,F02D,F02M,Y02T

Abstract:
A fuel supply apparatus for an internal combustion engine, comprising:a separation membrane for separating a fuel supplied as a material into a high-octane fuel containing a larger amount of high octane value components than a material fuel and a low-octane fuel containing a larger amount of low octane value components than the material fuel; a high-octane fuel supply passage and a low-octane fuel supply passage that are independent from each other and that are capable of supplying the high-octane fuel and the low-octane fuel after a separation, respectively, separately to the internal combustion engine; the fuel supply apparatus for the internal combustion engine being characterized by supplying one or both of the high-octane fuel and the low-octane fuel to the internal combustion engine in accordance with an engine operation condition; separation condition detecting means for detecting an operation condition of the separation membrane related to amounts of a post-separation high-octane fuel and a post-separation low-octane fuel produced or a property of a post-separation fuel; and separation processing control means for controlling the separation membrane operation condition so that the amount of one of the post-separation fuels produced becomes equal to a predetermined value or a property of one of the post-separation fuels becomes equals to a predetermined property.