Patent ID: 8051828
Filing Date: 2011-11-08
Classification: F02D,F02M,Y02T,Y10T

Abstract:
1. A method for managing the delivery of fuel to an internal combustion engine of a vehicle, comprising the steps of: filling a main tank of said vehicle with a predetermined amount of regular fuel having an intermediate research octane number (IRON); controllably delivering IRON fuel from said main tank to an on-board separation (OBS) unit of said vehicle, said OBS unit being operable for separating said IRON fuel into a high research octane number (HRON) fuel and a low research octane number (LRON) fuel, higher and lower than said IRON fuel, respectively; delivering HRON fuel from said OBS unit to an HRON tank of said vehicle; monitoring the operational requirements of said engine at any given time; controllably and selectively delivering either HRON fuel from said HRON tank, or LRON fuel directly from said OBS unit, or a mixture thereof to said engine, in response to said monitoring step; measuring the HRON fuel level in said HRON tank; controlling both the production of said HRON and LRON fuels by said OBS unit, and the consumption of these fuels by said engine, in response to both said HRON level measuring step, and to said monitoring step, whenever the level of fuel in said HRON tank is within predetermined limits; controlling the production and consumption of HRON and LRON fuels in accordance with a predetermined algorithm, whenever the level of fuel in said HRON tank decreases to a predetermined lower limit; and recirculating HRON fuel from said HRON tank to either one or both of said OBS unit and said main tank, whenever the level of fuel in said HRON tank exceeds a predetermined high limit.