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The objective of this paper is to develope a motion base for the vehicle driving simulator. Kinematic analysis are carried out to obtain maximum strokes and velocities of hydraulic actuators. Hydraulic control forces of the actuators are estimated by inverse dynamic analysis. Finally, an optimal design is performed to find attachment points of the actuators so that control forces are minimized. A control logic for the motion base is developed to make the motion base follow the given reference signals. The control logic is implemented on a digital signal processor(DSP) board.

DHI has developed completely new six-cylinder K series engine for heavy-duty commercial vehicle as well as other industrial equipment. And DHI will produce it in the new kunsan engine plant. The main development targets were low emissions, excellent fuel economy, longer durability and minimum maintenance. For fulfilling these targets, high-pressure electronic unit injector system (EUI) with 4 valve and overhead camshaft (OHC), symmetrically structured cylinder block with very stiffened cylinder liner and bed plate, decompression engine brake system were adopted. During the design stage, CAE technology played very important role, through detail analysis and optimization. The K series engine achieved low exhaust gaseous emission level of Euro 3 as well as good fuel consumption, noise level lower than 96 dB(A), and major overhaul period longer than 1.5 million km.