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Technical Paper

Validation of a Parametric Vehicle Modelling Tool Using Published Data for Prototype and Production Vehicles with Advanced Powertrain Technologies

PAMVEC is a novel vehicle modeling tool designed to complement the capabilities of dynamic vehicle simulators and be better-suited to the purposes of vehicle technology assessment. This paper presents a validation of PAMVEC against published data for a range of production and pre-production prototype vehicles whose powertrain technologies span the range currently being exhibited by automotive manufacturers. For each vehicle, the PAMVEC model was used to predict the fuel/energy consumption and required peak powertrain output due to acceleration performance. Errors typically <10% were observed in the validation results and were considered to be within the bounds of uncertainty in the input data. Despite the difficulty in obtaining some of the input data, PAMVEC was a convenient tool for the energy consumption and performance predictions included in this analysis.
Technical Paper

Dynamic Simulation of a Light-Weight, Low-Drag, Hybrid-Electric Sports Coupe

The University of Queensland UltraCommuter concept is an ultra-light, low-drag, hybrid-electric sports coupe designed to minimize energy consumption and environmental impact while enhancing the performance, styling, features and convenience that motorists enjoy. This paper presents a detailed simulation study of the vehicle's performance and fuel economy using ADVISOR, including a detailed description of the component models and parameters assumed. Results from the study include predictions of a 0-100kph acceleration time of <9s, and top speed of 170kph, an electrical energy consumption of <67Wh/km in ZEV mode and a petrol-equivalent fuel consumption of <2.5 L/100km in charge-sustaining HEV mode. Overall, the results of the ADVISOR modeling confirm the UltraCommuter's potential to achieve high performance with high efficiency, and the authors look forward to a confirmation of these estimates following completion of the vehicle.
Technical Paper

Duty Cycle Characterization and Evaluation Towards Heavy Hybrid Vehicle Applications

Four metrics related to vehicle duty cycle are derived from the energy equation of vehicle motion. Three key application areas are introduced. The first is the ability to quantify the sameness between vehicle duty cycles and the ability to asses a duty cycle's suitability for hybrid vehicle usage. The second area of application allows for the estimation of fuel consumption for a given vehicle over a target duty cycle. The third area of application allows us to predict how non-propulsion fuel use will affect energy use. The paper ends with real-world examples involving actual heavy-duty hybrids.