Patent ID: 7955149
Filing Date: 2011-06-07
Classification: B63B,B63H,F02D,F02M,Y02T

Abstract:
1. A marine vessel including a gas driven piston engine and a fuel system for supplying fuel to the piston engine, the fuel system comprising: at least one fuel storage tank for storing liquefied gas, a fuel feed tank, wherein the fuel feed tank is a heat insulated pressure vessel for holding the gas in liquid phase and at elevated pressure, a first fuel supply line connecting the fuel storage tank and the fuel feed tank, a fuel feed line extending from a bottom section of the fuel feed tank to the piston engine, the first fuel feed line being provided with a first heat exchanger for evaporating liquid gas from the fuel feed tank prior to feeding it to the piston engine, and a pressure build-up system for regulating pressure in the fuel feed tank, the pressure build-up system comprising a circulation duct extending from the bottom section of the fuel feed tank to an upper section of the fuel feed tank, the circulation duct being provided with a second heat exchanger.