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发表于 2011-7-4 18:20
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来自: 中国天津
DNV规范中对于发动机的类型并没有以转速划分
1.3.1 Engine type
In general, the type of an engine is defined by the following characteristics:
• the cylinder diameter• the piston stroke• the method of injection (direct or indirect injection)• the kind of fuel (liquid, gaseous or dual-fuel)• the working cycle (4-stroke, 2-stroke)• the gas exchange (naturally aspirated or supercharged)• the maximum continuous power per cylinder at the corresponding speed and/or brake mean effective pressure corresponding to the above-mentioned maximum continuous power• the method of pressure charging (pulsating system or constant pressure system)• the charging air cooling system (with or without intercooler,number of stages, etc.)• cylinder arrangement (in-line or V-type).
ABS 对于发动机类型规定:
1.3.1 Slow-, Medium-, High-speed Diesel Engines
Slow-Speed Engines means crosshead type diesel engines having a rated speed of less than 400 rpm.
Medium-Speed Engines means trunk piston type diesel engines having a rated speed of 400 rpm and above, but less than 1400 rpm.
High-Speed Engines means trunk piston type diesel engines having a rated speed of 1400 rpm or above.
CCS规范中似乎也没有明确规定,但是关于最低稳定转速有一段文字:
主机应具有良好的低转速工作性能。最低稳定工作转速一般应:额定转速不高于300r/min的柴油机,不高于额定转速的30%;转速高于300,但低于或等于1000r/min的柴油机,不高于额定转速的40%;转速大于1000r/min的柴油机,不高于额定转速的45%。 |
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