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Tham khảo tài liệu 'lesson 20-three stages of main engine control', ngoại ngữ, anh văn thương mại phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Lesson 20 Three Stages of Main Engine Control The realization of ship s automation brings in countless advantages for automation makes it possible to free the crew from toiling and moiling improve upon their working conditions minimize their number so as to raise the economic effects and safeguard the voyage safety. It is obvious that the new automation technology will accompany the development of the shipbuilding industry all the way. One of the examples of ship s automation is the three stages of main engine control which denote hand control central control and bridge control respectively. The hand control means controlling a main engine by the engine side and may also be referred to as emergency control if both the central control and the bridge control should go wrong. The central control is to be realized from the centralized control room whereas the bridge control may be termed as remote control and executed in the wheelhouse. The mentioned three stages of M.E. control can be switched over among one another if necessary. Together with the rapid development of the three-stage M. E. control UMS EO system has already come into being with UMS standing for the unattended machinery space and EO for the engine room zero people. Hereinbelow we shall go into the details of the three-stage M. E. control one by one. 1. Hand Control By the hand control the function of the remote control maneuvering console is the same as that of an ordinary electrictelegraph. Engineers in the engine space will operate the hand wheel of a diesel engine according to the orders from the wheelhouse and perform the answer to the electric telegraph signals at the same time. 2. Central Control In order to conduct the central control the measuring meters for various kinds of such parameters of M. E. and aux. machinery as pressure temperature voltage current frequency rpm and so forth are to be arranged and fitted in the control room which is situated at the engine space and with the sound .
