Part One: Stability Analysis of Hydrogen-CNG Powered Vehicle

Background: When conventional petroleum-based liquid fuels are combusted, several hazardous pollutants are produced. These pollutants are noxious for both human beings and the environment. Objective: This study aims to analyze the stability of Hydrogen-CNG powered vehicles. Hydrogen has the potential to be one of the most sustainable fuels of the future, decrease the global dependence on fossil fuel resources, and lower the pollutant emissions from the transportation industry. Though we have alternative non-conventional sources of energy, the perfect one to use as the energy source for vehicles is hydrogen. The mixture of Hydrogen and CNG provides excellent properties as fuel for transportation. A fast and accurate control system is designed that allows the combustion of pure Hydrogen. Methods: Combination of Hydrogen with CNG can increase the power and efficiency of the vehicle. The vehicle powered by Hydrogen-CNG needs an electronic control system assuring the operation of its discrete components. MIMO system models having brakes and acceleration inputs are considered. Results: Results are presented for the vehicle transfer function in the form of Bode plots, Root locus, and Routh Hurwitz judging the stability of the vehicle. Conclusion: The main goals of the paper that is to analyze the stability of the vehicle and design an efficient control system are achieved. Obtaining the transfer function for governing equations for understanding the stability of the plant and generating a visual representation showing the relation between the variable quantities have been achieved in this paper.