Patent ID: 6065455
Filing Date: 2000-05-23
Classification: F02M,Y02T

Abstract:
A fuel delivery system comprising,an internal combustion engine,said internal combustion engine having cylinders wherein fuel is combusted,a fuel tank for storing fuel,a fuel pump positioned in said fuel tank for delivering fuel from said fuel tank,a fuel expander,a first fuel line connecting said fuel tank and said fuel expander for conveying fuel from said fuel tank to said fuel expander,a pressure return assembly connected to said first fuel line,said pressure return assembly includes a return pressure regulator connected to said first fuel line for regulating the fuel pressure in said pressure return assembly,a fuel return line connecting said return pressure regulator and said fuel tank for returning surplus fuel from said return pressure regulator to said fuel tank,said fuel expander including means for elevating the temperature of the fuel to convert the fuel to superheated fuel,means for metering fuel into said cylinders of said internal combustion engine,a second fuel line connecting said fuel expander and said means for metering fuel into said cylinders for conveying the superheated fuel from said fuel expander to said means for metering fuel into said cylinders,a pressure regulator for maintaining a constant fuel pressure in said fuel delivery system, said pressure regulator having an input and an output,said fuel pressure regulator input connected to said means for metering fuel into said cylinders,a fuel re-circulation line connected to said fuel pressure regulator output for receiving surplus superheated fuel from said fuel pressure regulator, andsaid fuel re-circulation line connecting said pressure regulator to said first fuel line in a position proximal said fuel expander for conveying the surplus superheated fuel from said pressure regulator to said first fuel line.