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In response to the energy crisis and the changes of global-scale environment, further improvement of fuel economy and adaptation to severer emission regulation are required in an automotive engine. Enhanced air-fuel mixing homogeneity and improved bure rates is vitally important to reduce the fuel consumption and emissions. In this paper, variable intake charge motion(VICM)technology which is benefit to air-fuel mixture and combustion is studied on Changans 1. 5L turbo charged direct injection engine. Tumble ratio and turbulent kinetic energy(TKE)are both important parameters for air-fuel mixing and combustion. Much more 3D CFD simulations for improving tumble ratio and TKE was conducted with different VICM scheme which include VICM flap valve effective circulation area and VICM flap valve installation angle. And the experiments were also carried out with the best VICM scheme at catalyst light off point(1200r/min/3bar IMEP)and part load point(2000r/min/2bar BMEP).Simulation results show that tumble ratio and TKE in-cylinder is improved 154%and 4%respectively with the best VICM scheme at 1200r/min/3bar IMEP. Meanwhile, equivalence ratio uniformity index(ERUI)improve by 27%and combustion room surface wetting also reduced more at 2000r/min/2bar BMEP. And the engine test result confirmed that normalized exhaust heat flow is increased 55%and normalized HC mass flow decreased by 85%at 1200r/min/3bar IMEP. Fuel consumption is also reduced about 5%at 2000r/min/2bar BMEP. Moreover, NOx and CO also dropped a little more at the same point.