TAILIEUCHUNG - Lesson 15-The power systems of Diesel Engine
Tham khảo tài liệu 'lesson 15-the power systems of diesel engine', ngoại ngữ, anh văn thương mại phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Lesson 15-The power systems of Diesel Engine The power systems of a diesel engine are a primary part of a power plant the function of which is to guarantee proper operation of the power plant and which mainly consist of F. O. system L. O. system cooling system and compressed air system. Let us deal with them one by one. 1. The Fuel Oil System The basic mission of F. O. system is to supply M. E. and aux. boiler with sufficient clean fuel fuel oil needed by a vessel is to be fed and stored through oil filling port and via oil charging piping. For medium and large vessels fuel oil to be stored in F. O. tanks in the double bottom. F. O. transfer pumps are required for F. O. delivery among various tanks such as service tank storage tank settling tank and separate F. O. tanks. Any fuel oil must go through filtering settling and centrifugal separation before it enters the engine so as to ensure the reliable and continuous running of the engine since it contains a certain amount of impurities and water. On the condition that a heavy oil with high viscosity is in service it should be pre-heated before coming into use. Moreover for the measurement and indication of F. O. tank level a level gauge is to be equipped with for a timely mastery of M. E. oil consumption a F. O. meter will be relied upon for the measurement of F. O. temperature a thermometer is not dispensable. In a word the functions of can be described as feeding transferring purifying measuring and supplying. 2. The Lube Oil System The task of lube oil system is to provide the surfaces of different moving parts with a moderate amount of lube oil so as to form a lubricant film and avoid a dry friction between various parts. In addition to the reduction of friction resistance and wearing off the lube oil system serves to help a lot in cooling flushing gas tightness rust prevention and decrease of vibration. Fig. 1-oil tank-két dầu 2-filter bầu lọc 3-pressure adjusting valve-van .
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