Patent ID: 6412476
Filing Date: 2002-07-02
Classification: B60K,F02M

Abstract:
A fuel system comprising:a variable volume fuel tank including a first portion which selectively receives and contains an amount of fuel, and a second portion which selectively receives and contains an amount of pressurized gas; a piston which is movably disposed within said variable volume fuel tank; a guide member which is longitudinally disposed within said fuel tank and upon which said piston is slidably mounted; and a pair of bellows members which are disposed within said tank, which defines said second portion of said tank and which are coupled to a back surface of said tank, said pair of bellows members comprising a first inner bellows member and a second outer bellows member which are selectively movable from a first contracted position to a second expanded position, said movement of said pair of bellows members being effective to cause said piston to move within said variable volume fuel tank and to compressibly pressurize said amount of fuel.