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This paper presents a validation method of vehicle suspension models to improve the accuracy of vehicle simulation model and a prediction method of vehicle handling characteristics. Suspension model validation was performed by comparing the simulation results of front and rear suspension model to the suspension quasi-static test results about wheel alignment characteristics like toe, camber, caster, roll steer, lateral force compliance steer and ride rate etc., and the procedure is shown. Suspension test results have been obtained by using suspension parameter measuring machine. For the predictions of handling maneuvers, total vehicle model is built by combining of these validated front and rear suspension models and numerical tire model based on the rig test. Suspension modeling and handling maneuver simulations are performed using general purpose dynamics and kinematics analysis code DADS.

Characteristics of syngas combustion at various reforming ratios were studied numerically. The syngas was formed by the partial oxidation of methane to mainly hydrogen and carbon monoxide and cooled to ambient temperature. Stiochiometric and lean premixed flames of the mixtures of methane and the syngas were compared at the atmospheric temperature and pressure conditions. The adiabatic flame temperature decreased with the reforming ratio. The laminar burning velocity, however, increased with the reforming ratio. For stretched flames in a counterflow, the high temperature region was broadened with the reforming ratio. The maximum flame temperature decreased with the reforming ratio for the stoichiometric case, but increased for the lean case except for the region of very low stretch rate. The extinction stretch rate increased with the reforming ratio, implying that the syngas assisted flame is more resistance to turbulence level.