CYLINDER BORE CORROSION PREVENTION SYSTEM OF DIESEL ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a cylinder bore corrosion prevention system of a diesel engine having a simple structure which can efficiently prevent corrosion of a cylinder bore by using low-sulfur fuel and controlling the generation of highly concentrated sulfuric acid which causes corrosion of the cylinder bore.

SOLUTION: The cylinder bore corrosion prevention system of a diesel engine includes: a plurality of fuel tanks 2a and 2b which store fuel having different sulfur concentration; an injector 8; a main pipe 14 which connects to the injector 8; a plurality of sub-pipes 13a and 13b which connect to the fuel tanks 2a and 2b respectively; a valve 3 which regulates the flow rate of the fuel flowing in the sub-pipes 13a and 13b; dew point temperature database 4 which stores dew point temperature data of a liquid material generated in the cylinder bore 11 by each sulfur concentration in the fuel; an output device 6 which outputs the temperature information of a surface of the cylinder bore 11; pressure range database 16 which stores pressure change range in the cylinder bore 11; and a control device 5 which regulates sulfur concentration in the fuel for controlling sulfuric acid concentration in the liquid material.

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