Engine Rating Definitions
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| 注意 |
|---|
超过发动机额定功率来运转发动机会缩减发动机大修前的使用寿命。 |
表1对3500B 高排量船用发动机的额定功率等级进行了定义。
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| 3500B 高排量船用发动机额定功率等级定义 | |||||
| 额定功率等级 | 典型应用 | 典型年使用小时数 | 典型负荷系数 | 额定功率允许使用时间 | 中断或负载循环 |
| 连续作业 "A"级 | 水底拖捞船 (1) 深河拖船 (1) 货船 (1) 拖船 (1) |
5000 至 8000 | 80 至 100% | 100% | 否 |
| 中度作业 "B"级 | 勤务船 渡船 (2) 中层水拖捞船 围网渔船 补给船 拖船 (2) |
3000 至 5000 | 40 至 80% | 80% | 有些负载循环 |
| 间歇作业 "C"级 | 沿海货船 渡船 渔船 (3) 拖船(港口) 近海作业 快艇(排水船体船只) |
2000 至 4000 | 20 至 80% | 50% | 循环的发动机负载和转速 |
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| ( 1 ) | 重度作业 |
| ( 2 ) | 船只因遇到船闸、沙坝和弯曲航道须频繁减速。 |
| ( 3 ) | 典型来讲，这类船从港口巡航出来又巡航回去时航行得很快: 螯虾船龙虾船, 金枪鱼船 和 |
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