Crh patent

EMU refers to the train whose driving force is dispersed under each car, that is, the train can start by itself without locomotive head. EMU is divided into diesel EMU and electric EMU. Nowadays, EMUs generally refer to electric EMUs, which rely on high-voltage DC power to drive trains.

In China high-speed railway, EMUs are divided into 250km class and 300km class and above. Generally, 250-kilometer trains are called EMUs, and those over 300 kilometers are high-speed trains. High-speed rail lines need specially reinforced subgrade rails and power grids, so they are built separately from ordinary railway lines, and the lines needed by EMU only need to transform existing lines.

CRH Harmony Number =CRH, which is the English abbreviation of China Railway Expressway, is now the management brand of high-speed EMU.

Maglev Commercial Line The only high-speed maglev commercial line in the world is the branch line from Longyang Road in China and Shanghai to Pudong Airport, with a speed of over 400 kilometers per hour. Because of the high maintenance cost, it has not been widely used in other developed countries in the world, and only a small-scale medium and low-speed maglev line has been put into use. For example, this branch line between Japan and Shanghai was originally used to connect Hangzhou, but it was replaced by the current Shanghai-Hangzhou high-speed railway because of cost and environmental problems.