Engine Speeds Details about Diesel Marine Aeronautical Engine

Commercial Marine Engine Engine Speeds Details about Diesel Marine and Aeronautical Engine.

Engine Speed :

Within the disel engine undustry, engine are often categeorized by their speeds into three unofficial groups:

1. High-speed engine

2. Medium-speed engine and

3. Slow-speed engine

High-speed( approximately 1,000 rpm and greater)engies are to used to trucks, buses, tractors, cars, yachts, compressors, pups, and small eletrical generators. As of 2008, most high-speed engines have direct injection. Many modern engines, particularly in on highway applications, have common rail derect injection, which is clearner burning .

Medium-speed engines used in electrical generators run at approximately 300 to 100 rrpm and are optimized to run at a set synchronous speed depending on the generation are frequency (50 or 60 hertz)and provide a rapid response to load changes. Typical synchronous speed modern medium speed engines are 500/514 rpm (50/60Hz), 600 rpm (both 50 and 60 Hz), 720/750 rpm, and 900/1000 rpm .

These extremely large two-stroke have power up to approximately 85 MW (114,000hp), operate in the range from approximatley 60 to 200 rpm and are up to 15 m(50ft) tall, and can weigh over 2,000 short tons (1,800 t) .They typically use derect injection running on cheep low grade heavy fuel, also know as Bunker C fuel, which requires heating in the ship for tanking and before injection due to the fuel's highly viscosity.