System intended for pressure supply of liquid fuel to an internal-combustion engine

A system for pressure supply of liquid fuel to at least one combustion chamber of an internal-combustion engine, comprising;

• a tank for pressure storage of liquid fuel;
• at least one injector for injecting the liquid fuel into at least one combustion chamber of the engine;
• a line connecting the tank to the at least one injector;
• a pump for pumping the liquid fuel from the tank through at least a portion of the line to the at least one injector and into the at least one combustion chamber of the engine;
• a by-pass line branched from the line connecting the tank to the at least one injector, and connecting the line to an intake system of the engine;
• a gaseous fuel storage container fuel storage container provided on the by-pass line between the intake system of the engine and the line connecting the tank to the at least one injector;
• at least one valve for isolating the at least one injector and the by-pass line from the tank;
• and
• a drain for draining fuel from the at least one injector when the at least one injector and the by-pass line are isolated from the tank by the at least one valve.