CHS has recently developed a new power-splitting hybrid transmission platform HT2800, which has added 2 clutchs compared to HT1800. With involvement of 2 E-motors HT2800 has 9 forward modes, including 3 electric forward modes and 6 hybrid forward modes. Among the 6 hybrid modes 4 modes are fixed-ratio modes and the remaining 2 modes are variable-ratio modes, which are also knowed as eCVT-modes. This paper describes the strategy, designed for HT2800, how to select the optimal mode, the optimal gear and the optimal work point of the engine to achieve the best economy performance in the real traffic. Because it is universally accepted, that the WLTC cycle can represent real world vehicle operation on urban and extra-urban roads, motorways, and freeways. The suggested strategy will be validated with the help of the WLTC cycle.