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The effectiveness of immersion cooling for the thermal management of Electric-Vehicle (EV) batteries is crucially influenced by the thermophysical and rheological properties of the heat-transfer liquid. This study emphasizes upon the design requirements for such a fluid in terms of bulk properties, i.e., high electrical resistivity and thermal conductivity, low viscosity, but also relevant to the rheological properties maximizing the heat transfer rate. Key concepts of the implemented research constitute: (i) the promotion of vortical motion in the laminar flow regime, which, in turn, enhances heat transfer by disrupting boundary layers; (ii) vortex stabilization through the addition of viscoelasticity-inducing agents in the base heat-transfer liquid. To improve cooling efficiency, the primary objective is to maximize the achievable heat transfer rate for minimal pumping losses.

Over the past twenty years, the automotive sector has increasingly prioritized lightweight and eco-friendly products. Specifically, in the realm of tyres, achieving reduced weight and lower rolling resistance is crucial for improving fuel efficiency. However, these goals introduce significant challenges in managing Noise, Vibration, and Harshness (NVH), particularly regarding mid-frequency noise inside the vehicle. This study focuses on analyzing the interior noise of a passenger car within the 250 to 500 Hz frequency range. It examines how tyre tread stiffness and carcass stiffness affect this noise through structural borne noise test on a rough road drum and modal analysis, employing both experimental and computational approaches. Findings reveal that mid-frequency interior noise is significantly affected by factors such as the tension in the cap ply, the stiffness of the belt, and the damping properties of the tyre sidewall.

This research study investigates the influence of undercover design on three critical aspects of vehicle performance: water entering into air intake filter, Aerodynamic performance, thermal performance on vehicle engine room components (Condenser, Radiator and Air Intake System). Undercover serves the purpose of protecting Engine, underhood components and also improves aerodynamics of the vehicle. Through CFD simulations, various undercover design configurations: Full Undercover, no undercover and half undercover cases are evaluated to assess their effectiveness in mitigating the water ingress into the air intake system. Additionally, we explore the implications of these design alterations on the thermal performance and aerodynamic drag.

Abstract The aim of this paper is to present the workflow of battery sizing for electric L-7 type vehicle. The “Worldwide harmonized Light vehicles Test Procedure” (WLTP) as a global standard to determine the vehicle energy usage is used as a vehicle speed profile and acceleration limitations. As per legislation the electric L7-type vehicle speed is limited to 90 km/h having electric motor with 15 kW nominal power. Accordingly to these limitations the “Worldwide harmonized Light vehicles Test Cycles” WLTC class 2 (Figure 1) is used by involving all three test cycles (low, middle and high). Firstly the vehicle characteristics are defined containing: vehicle/kerb mass, battery mass, passengers mass, cargo mass, wheel dimensions, frontal area, wind drag coefficient, frictional coefficient, aerodynamic resistance, tire resistance force, wind speed and air density in function of temperature. Figure 1. WLTC class 2 driving cycle.

This SAE Aerospace Recommended Practice (ARP) covers requirements for a self-propelled, boom-type aerial device, equipped with an aircraft deicing/anti-icing fluid spraying system. The unit shall be highly maneuverable for deicing all exterior surfaces of commercial aircraft, of sizes agreed upon between purchaser and manufacturer, in accordance with AS6285. The vehicle shall be suitable for day and night operations.