Fuel Supply System And Fuel Distributor Block

A fuel supply system, configures as a common-rail fuel supply system for at least one a large diesel internal combustion engine and a diesel internal combustion engine of a ship, comprising:

• a low-pressure region;
• a high-pressure region;
• a pumping device configured to convey fuel from the low-pressure region into the high-pressure region and comprising:
• at least one low-pressure pump;
• and
• at least one high-pressure pump;
• a pressure accumulator system that is permanently under high pressure, which comprises multiple distributor units, is arranged between the pumping device and injectors assigned to cylinders;
• a fuel distributor block is provided between each low-pressure pump and each high-pressure pump, to which a fuel leakage, emanating from each distributor units and the pumping device can be supplied,
• wherein the fuel distributor block comprises:
• a fuel leakage collection line for the fuel leakage fed to the fuel distributor block;
• one of a constriction or an orifice;
• a bypass to the one of the constriction or the orifice;
• and
• a leakage sensor in a region of the bypass,
• wherein the one of the constriction or the orifice is dimensioned such that when the fuel leakage conducted via the fuel leakage collection line is smaller than a limit value, all fuel leakage flows via the one of the constriction or the orifice, and when the fuel leakage conducted via the fuel leakage collection line is greater than the limit value, a part of the fuel leakage flows via the bypass and the leakage sensor.

A fuel distributor block for a fuel supply system, configured to be arranged between at least one low-pressure pump of a pumping device of the fuel supply system, and at least one high-pressure pump of the pumping device of the fuel supply system, and configured to receive a fuel leakage emanating from distributor units of the fuel supply system and of the pumping device of the fuel supply system, wherein the fuel distributor block comprises:

• a fuel leakage collection line for the fuel leakage fed to the fuel distributor block;
• one of a constriction and an orifice;
• a bypass to the one of the constriction or the orifice;
• and
• a leakage sensor in a region of the bypass,
• wherein the one of the constriction or the orifice is dimensioned such that:
• when the fuel leakage conducted via the fuel leakage collection line is smaller than a limit value, all fuel leakage flows via the constriction or orifice, and
• when the fuel leakage conducted via the fuel leakage collection line is greater than the limit value, a part of the fuel leakage flows via the bypass and the leakage sensor.