世界现代前期科技史二(国外英文资料).doc

世界现代前期科技史二(国外英文资料) German mechanical engineer diesel (1858-1913) developed a successful diesel engine. this It is a pressure combustion engine that does not use ignition. It lengthened the compression process prior to combustion and increased The large compression ratio, which greatly increased the thermal efficiency to 27-32 percent, achieved a significant explosion in the internal combustion engine technology Broken. Diesels first 18hp compressed internal combustion engine was in Munich in 1897 The previous exhibition immediately aroused peoples attention and admiration. Diesel saw the commercial value of his invention Then he applied for a patent quickly and widely promoted his invention, and he started his own diesel engine The factory turned into a millionaire quickly. As the new diesel engine was not mature enough, diesel was again The first products produced by his diesel manufacturer were not available for further study and improvement The user returns with bad performance. Disell and his diesel engine were in a hurry In the fierce competition, it not only lost money, but also took down $200,000 in debt. In the face of the sink The heavy blow, diesels tragic suicide. Diesel has since been improved for 30 years It is becoming more and more perfect and has become an irreplaceable motive in the heavy working tool. (3) the development of the steam turbine As the internal combustion engine develops, two other new engines are also being developed. One is the steamed The steam turbine. The other is a gas turbine. The steam turbines moving parts are the rotor, the rotor in the steam The action of the recoil forces the motion of the other parts. Charles? parsons Ss (1854-1931) patented the steam turbine in 1884. The rotor of the turbine is in 750 to 18, 000 revolutions per minute. Laval, Swede (1845-1913) The speed of the impact-type turbine produced is as high as 1000030000 RPM. Because of the steam turbine The steam engine has obvious high speed, strong, high effic