internal combustion loco development history
The diesel locomotive uses the internal combustion engine as the prime mover to drive the locomotive of the wheel through the transmission. According to the type of internal combustion engine on the locomotive, the majority of internal combustion engines used in China's railways are diesel engines. The fuel (diesel) burns in the cylinder, converting the thermal energy into the mechanical energy output by the diesel crankshaft, but it is not used to directly drive the moving wheel, but is converted into mechanical energy suitable for the traction characteristics of the locomotive through the transmission device, and then drives the locomotive moving wheel through the running portion. Rotate on the track.
At the beginning of the 20th century, foreign countries began to explore prototype diesel locomotives. In 1924, the Soviet Union made an electric drive diesel locomotive and delivered it to the railway. In the same year, Germany used diesel engines and air compressors to match, using diesel exhaust heat to heat compressed air instead of steam, and converted the steam locomotive into an air-driven diesel locomotive. In 1925, the United States put a 220 kW electric drive diesel locomotive into operation and engaged in shunting operations. In the 1930s, diesel locomotives entered the trial phase. In the late 1930s, there were some trunk passenger locomotives that were connected by a single-section locomotive with a power of 900 to 1 000 kW. After the Second World War, due to the rapid improvement of diesel engine performance and manufacturing technology, most of the diesel locomotives were equipped with an exhaust gas turbocharging system. The power was increased by about 50% compared with that before the war. The internal combustion of the DC power transmission and the hydraulic transmission was configured. The development of locomotives accelerated, and by the 1950s, the number of diesel locomotives had grown rapidly. In the 1960s, high-power silicon rectifiers were successfully developed and applied to locomotives. The 2,940 kw diesel locomotives with AC-DC power transmission appeared. In the 1970s, the power of a single diesel locomotive had reached 4,410 kW. With the development of electronic technology, the Federal Republic of Germany in 1971 produced a 1,840 kW AC-to-electric power diesel locomotive, which provided a new way for the technical development of diesel locomotives and electric locomotives. The subsequent development of diesel locomotives has been continually making new progress in improving the reliability, durability and economy of locomotives, as well as preventing pollution and reducing noise.