题目
() allows the engine to be placed wherever is most suitable, as they no longer have to be aligned with reduction gearing and shafting as is the case with conventional installations.Diesel engine propulsion Diesel electric propulsion Steam engine propulsion Gas turbine propulsio
() allows the engine to be placed wherever is most suitable, as they no longer have to be aligned with reduction gearing and shafting as is the case with conventional installations.Diesel engine propulsion Diesel electric propulsion Steam engine propulsion Gas turbine propulsio
题目解答
答案
B
解析
本题考查船舶推进系统类型的特点,核心在于理解不同推进方式的结构差异。关键点在于柴油电力推进系统通过电能传输替代传统机械连接,使发动机位置更灵活。需对比选项中各推进方式的工作原理,明确其是否需要减速齿轮和轴系的机械对齐。
选项分析
A. Diesel engine propulsion(柴油发动机推进)
- 传统机械连接:发动机通过减速齿轮和轴系直接驱动螺旋桨。
- 限制:发动机位置需严格对齐齿轮和轴系,布置灵活性低。
B. Diesel electric propulsion(柴油电力推进)
- 电力传输:发动机驱动发电机,电能通过电缆传输至电动机驱动螺旋桨。
- 优势:发动机与电动机无需机械对齐,可独立布置,位置更灵活。
C. Steam engine propulsion(蒸汽发动机推进)
- 机械传动:仍需通过齿轮和轴系传递动力,布置受限。
D. Gas turbine propulsion(燃气轮机推进)
- 机械或电力传动:部分燃气轮机推进可能采用电力系统,但传统形式仍依赖机械连接。
结论:只有柴油电力推进通过电能传输消除机械对齐需求,符合题意。