FAP, May 29 / PRNewswire-FirstCall-Asianet /-- BYD said on the interactive platform that BYD DM-i is a series-parallel structure of two motors based on the electric vehicle platform, which realizes the decoupling (disconnection) of the engine and wheels, and the engine can start flexibly in EV mode. Fuel steam can be desorbed freely (oil vapor is removed from the carbon tank). Coupled with the cooperative strategy of multiple control units and the in-depth study of the characteristics of carbon tanks, BYD independently developed the fuel steam emission control technology of atmospheric fuel tanks, which can meet the evaporative emission regulations and standards. This technology realizes that PHEV will start the engine automatically even if the vehicle is used in EV mode for a long time before the carbon tank is saturated, and the problem can be solved in about 4 minutes, neither increasing fuel consumption nor noise, but also completing fuel steam desorption, vehicle power generation and engine maintenance, which is both reasonable and legal.