When more than 6 times the diameter of the body length, the second critical speed of the rotor will be close to the motor running speed, running a large vibration may occur. Therefore, the size of large high-speed turbo-generator rotor severely restricted. About 100,000 kilowatts of its rotor size of air-cooled motor has reached the limits of the size of the above, again increasing the motor capacity only by increasing the electromagnetic motor load to achieve. So we must strengthen the motor cooling. So 5 to 10 million kw turbine generator have adopted the cooling effect of a good hydrogen-cooled or water-cooled technology. Diesel generator is a small power plant, means the diesel fuel in the diesel engine prime mover driven generator to power machinery. The entire unit generally consists of diesel engines, generators, control box, fuel tank, starting and controlling the storage battery, protective equipment, emergency cabinet and other components. Diesel engine driving the generator running generators processors, the energy into electricity diesel generator manufacturer, depending on its use of different generators can be divided into land use diesel generators and marine diesel generator sets. 3.1 Fundamentals diesel engine driven generator running, the diesel fuel energy into electricity. In the diesel engine cylinder through the air filter clean filtered air atomizing nozzle jet of high-pressure mix of diesel generator set sales, under the piston upward extrusion, the volume is reduced, the temperature rises rapidly, reaching diesel ignition. Generators processors, Weifang Huadong (certified), generators provided by Weifang Huadong Engine Co., Ltd. Weifang Huadong Engine Co., Ltd. (www.hdchai.com) is an industry leader in Shandong Weifang, the internal combustion engine, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Weifang Huadong leadership with the staff warmly welcome all inquiries negotiations to create a better future Weifang Huadong.