Patent ID: 9206776
Filing Date: 2015-12-08
Classification: B63H,F02B,F02M,F17C,Y02T

Abstract:
1. A fuel feeding system for storing liquefied gas and feeding gaseous fuel to be used in a piston engine, which fuel feeding system comprises: at least two cryogenic fuel tank arrangements comprising a first tank arrangement and a second tank arrangement in connection with each other; a gaseous fuel feed line connected at a first end thereof to at least one piston engine; the first tank arrangement provided with a pressure build-up system comprising a first heat exchanger unit, the inlet of said first heat exchange unit connected to a bottom section of the first tank arrangement, the outlet of said first heat exchange unit connectable to a top section of the first tank arrangement, the first tank arrangement and the second tank arrangement both being pressure vessels, and the first tank arrangement is selectively connectable to the gaseous fuel feed line by a gas line extending from an outlet in the top section of the first tank arrangement, wherein the second tank arrangement is connected from an outlet in a bottom section of the second tank arrangement to the first tank arrangement so that liquefied gas may be selectively brought into the bottom section of the first tank arrangement or into an ullage space of the first tank arrangement via a spraying device arranged into an upper part of the first tank arrangement, and the first and the second tank arrangements in connection with each other via a gas line which extends from an outlet in the top section of the first tank arrangement and from an outlet in a top section of the second tank arrangement to the gaseous fuel feed line to provide selectively connectable gas flow from the first and the second tank arrangements to the gaseous fuel feed line.