có ai dịch dùm mình đoạn chuyên ngành này với ạ? mình xin cảm ơn nhiều ạThe main bearings are 3–metal bearings and can be removed by lowering the main bearing cap. A hydraulic jack is provided for every main bearing to lower and lift the main bearing cap.The crankshaft is forged in one piece and balanced by counterweights as re- quired.The connecting rods are drop forged. The design is a three piece marine design. The small end bearing is stepped to achieve large bearing surfaces.... có ai dịch dùm mình đoạn chuyên ngành này với ạ? mình xin cảm ơn nhiều ạThe main bearings are 3–metal bearings and can be removed by lowering the main bearing cap. A hydraulic jack is provided for every main bearing to lower and lift the main bearing cap.The crankshaft is forged in one piece and balanced by counterweights as re- quired.The connecting rods are drop forged. The design is a three piece marine design. The small end bearing is stepped to achieve large bearing surfaces. The big end bearings are 3–metal bearings.The piston upper part ring grooves are hardened. Cooling oil enters the cooling space through the connecting rod. The cooling spaces are designed to give an op- timal shaker effect. Part of the oil going to the cooling space is led to piston skirt lubrication through nozzles situated in the piston.The piston ring set consists of two chrome–plated compression rings and one chrome plated, spring–loaded oil scraper ring.The cylinder head, made of special cast iron, is fixed by four hydraulically ten- sioned screws. The head is of the double deck design and cooling water is forced from the periphery towards the centre thereby ensuring efficient cooling to the important areas.The inlet valves are stellite plated and the stems are chromium plated. The valve seat rings are made of a special cast iron alloy and are changeable.The exhaust valves seal against the directly cooled valve seat rings. The valves are made of Nimonic in engines using HFO as fuel or they have Stellite seats and chromium–plated stems in case of using MDO.
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17/12/18 04:27:02có ai dịch dùm mình đoạn chuyên ngành này với ạ? mình xin cảm ơn nhiều ạThe main bearings are 3–metal bearings and can be removed by lowering the main bearing cap. A hydraulic jack is provided for every main bearing to lower and lift the main bearing cap.The crankshaft is forged in one piece and balanced by counterweights as re- quired.The connecting rods are drop forged. The design is a three piece marine design. The small end bearing is stepped to achieve large bearing surfaces.... Xem thêm.
