Fuel tank

Abstract

This invention provides a fuel tank of a simple structure without any special device but having space of a predetermined ratio after the fuel tank has been filled with liquefied fuel. The fuel tank is of a form in which a number of cylindrical or spherical containers are arranged in parallel and are coupled together in a manner that the cylindrical or spherical containers neighboring each other share partitioning walls, respectively. Each of the partitioning walls has a passage through which the neighboring cylindrical or spherical containers are communicated with each other, and the upper ends of the passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the cylindrical or spherical containers.

1 . A fuel tank, wherein said fuel tank is of a form in which a number of cylindrical containers are arranged in parallel and are coupled together in a manner that the cylindrical containers neighboring each other share common partitioning walls, respectively;
 each of said partitioning walls has a passage through which the neighboring cylindrical containers are communicated with each other;   the upper ends of said passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the cylindrical containers; and   when the liquid is fed into said fuel tank, space of a predetermined volume is formed on the surface of said liquid.   
     
     
         2 . A fuel tank, wherein said fuel tank is of a form in which a number of spherical containers are arranged in parallel and are coupled together in a manner that the spherical containers neighboring each other share common partitioning walls, respectively;
 each of said partitioning walls has a passage through which the neighboring spherical containers are communicated with each other;   the upper ends of said passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the spherical containers; and   when the liquid is fed into said fuel tank, space of a predetermined volume is formed on the surface of said liquid.   
     
     
         3 . The fuel tank according to  claim 1 , wherein the volume of said space is not less than 15 percent of the whole internal volume of said fuel tank. 
     
     
         4 . The fuel tank according to  claim 2 , wherein the volume of said space is not less than 15 percent of the whole internal volume of said fuel tank.