Steering System of a Low-Consumption Vehicle: From the Dynamics Analysis to the Design of the Wheel Assembly

Ferraris, Alessandro; Messana, Alessandro; Multari, Daniele; Sisca, Lorenzo; Airale, Andrea Giancarlo; Carello, Massimiliana

doi:10.1007/978-3-030-03320-0_10

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…The NTHS was tested and optimized in HySy-Lab laboratory and afterwards implemented on the vehicle prototype IDRA [12,24] that participated at the Shell Eco-Marathon competition [25] (Rotterdam-May 2015) achieving good results in terms of consumption. IDRA [26][27][28] (Figure 6a) is a carbon-fiber monocoque prototype [29,30] of 38 kg, 3 m length, 0.6 m height and 0.95 m width. The FCEV has a 200 W brushed electric motor and a 1 kW [31] closed cathode FC (Figure 6b) supplied, through a pressure reducer, by a 0.4 L at 200 bar hydrogen cylinder .…”

Section: Application and Operation Conditionsmentioning

confidence: 99%

Nafion® Tubing Humidification System for Polymer Electrolyte Membrane Fuel Cells

et al. 2019

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Humidity and temperature have an essential influence on PEM fuel cell system performance. The water content within the polymeric membrane is important for enhancing proton conduction and achieving high efficiency of the system. The combination of non-stationary operation requests and the variability of environment conditions poses an important challenge to maintaining optimal membrane hydration. This paper presents a humidification and thermal control system, to prevent the membrane from drying. The main characteristics of such a device are small size and weight, compactness and robustness, easy implementation on commercial fuel cell, and low power consumption. In particular, the NTHS method was studied in a theoretical approach, tested and optimized in a laboratory and finally applied to a PEMFC of 1 kW that supplied energy for the prototype vehicle IDRA at the Shell Eco-Marathon competition. Using a specific electronic board, which controls several variables and decides the optimal reaction air flow rate, the NTHS was managed. Furthermore, the effects of membrane drying and electrode flooding were presented.

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Section: Application and Operation Conditionsmentioning

confidence: 99%

Nafion® Tubing Humidification System for Polymer Electrolyte Membrane Fuel Cells

et al. 2019

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“…The Shell Group sponsors an international competition called the Shell Eco-marathon, which focuses on lowering vehicle fuel consumption and is competed in by university groups of enthusiastic automobile teachers and students all over the world [3][4][5][6][7][8]. This and similar events foster several automotive technology developments, including the demonstration of distinctive car designs [9][10][11] , energy management systems [12][13][14][15][16] , powertrain innovations [17][18][19][20], advanced use of materials and manufacturing methods [21,22], mechanical design [23][24][25][26][27] and the development of new 3D-printed automotive parts [28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

A 3D-Printed Continuously Variable Transmission for an Electric Vehicle Prototype

2022

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This paper aims to present the design of a new 3D-printed continuously variable transmission (CVT) developed for an electric vehicle prototype competing in Shell Eco-marathon electric battery category, a world-wide energy efficiency competition sponsored by Shell. The proposed system is composed of a polymeric conic geared friction wheel assembled in the motor axle and directly coupled to the rear tire of the vehicle. The conical shape allows to implement a continuous variation of the geared friction wheel diameter in contact with the tire. The motor with the geared friction wheel was mounted over a board with linear bearings, allowing the speed ratio to change by moving the board laterally. A computational simulation model of a prototype electric vehicle with the proposed 3D-printed CVT was created in Matlab/Simulink environment to obtain the traction force in the geared friction wheel and also to analyze the vehicle performance. The simulation results demonstrated possibilities of increasing vehicle speed range output and available torque in the rear traction wheel. Also, it is shown with the simulated model that the designed CVT consumes 10.46% less energy than a fixed transmission ratio, demonstrating the CVT concept’s potential for battery consumption reduction. Lastly, a 3D-printing slicing software with an optimization algorithm plug-in was used to determine the best printing parameters for the conic geared friction wheel based on the tangential force, maximum displacement and safety factor. When compared to the original part with a 100% infill density, the optimized solution reduced the component mass by about 12% while maintaining safe mechanical resistance and stiffness.

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Innovative and Multidisciplinary Teaching to Design a Low Consumption Vehicle

Carello

2021

Mechanisms and Machine Science

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Steering System of a Low-Consumption Vehicle: From the Dynamics Analysis to the Design of the Wheel Assembly

Cited by 7 publications

References 8 publications

Nafion® Tubing Humidification System for Polymer Electrolyte Membrane Fuel Cells

Nafion® Tubing Humidification System for Polymer Electrolyte Membrane Fuel Cells

A 3D-Printed Continuously Variable Transmission for an Electric Vehicle Prototype

Innovative and Multidisciplinary Teaching to Design a Low Consumption Vehicle

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