Proton Exchange Membrane Fuel Cell (PEMFC) is a promising energy source in the future of transportation sector for powering automobiles instead Internal Combustion Engines (ICEs). This undoubtedly related to its friendly environmental characteristics and higher efficiency than IC Engines. However, there are still challenges that prevent implementation on wide scale which one these thermal management problem PEMFCs cooling systems. article introduces detailed comprehensive literature survey...

Abstract Owing to the significance of improving fuel economy, reducing emissions, and extending durability engine components, this study focused on tribological performance nano-additives. In study, copper (Cu) graphene (Gr) nanomaterials were dispersed in a fully formulated oil (5W-30) with different concentrations. The trials investigated under various speeds loads, utilizing reciprocating tribometer mimic ring/liner interfaces engine. frictional surface morphologies comprehensively...

This study aims to reveal the roles and mechanisms of Al2O3/TiO2 hybrid nanoparticles into lube oils which could reinforce engine components durability via reducing friction, wear, or fuel economy in automotive engines. The tribological tests were carried out under different sliding speeds from 0.21 1.75 m/s loads 30 250 N using a reciprocating tribometer simulate ring/liner interface according ASTM G181. results nanolubricants suggested that friction coefficient wear rate ring decreased...

Automobile engines consume more than 30% of fuel energy as frictional power waste. Therefore, this paper investigated the tribological properties ZnO nanoparticles (NPs) a nano-additive to improve wear and friction trends piston ring/cylinder liner interface, especially in boundary lubrication. This improvement occurs due formation solid tribofilm layer on sliding surfaces that acts an indirect coating help separate protect worn pairs. Tribological experiments were carried out under...

Heavy trucks are mostly used for international transportations, with longer highways and long driving hours contributing to corresponding increases in the driver’s fatigue that is related accidents. Therefore, this study aims improve truck ride performance using multistage leaf springs semi-active suspension driver seat. This analytical describes influence of main suspensions on indices analytically MATLAB Simulink different loading conditions three case studies: fully laden articulated...

Regenerative shock absorbers (RSAs) have still not entered production lines despite the promising potentials in energy efficiency and emission reduction. Vibration harvesting from vehicle dampers has been replicating dynamics of passive viscous dampers. An accurate frequency-based analysis harvestable for suspensions under typical operating conditions is essentially needed designing functional Vibratory Dampers (VRDs). This paper proposes parametrical bandwidth sensitivity analyses both...

In the past decade, nanofluids have proven effective for heat transfer enhancement of many thermal engineering applications. This is due to their superior performance characteristics compared with conventional coolants. Therefore, adoption as alternative coolants in proton exchange membrane fuel cell (PEMFC) cooling systems considered a novel technology and promising contributor solution management problems that are impeding commercialization automotive PEMFC engines. this article, radiator...

High cost and significant power absorption do not allow exploiting modern active control strategies for improving vehicle suspension performance. Meanwhile, the semi-active policies are able to overcome a weighted unsprung adverse effect, which represents cornerstone of implementation in-wheel motors new type electric vehicle. This paper discusses analyses proposed energy-harvesting based tuned mass damper (TMD) be implemented in vehicles. In this manner, full model embedded with four TMDs...

Highlights•A GPR framework is introduced for corrosion detection in concrete structures.•Time and frequency domain analysis are combined improved data interpretation.•Deep learning utilized accurate rebar recognition data.•Higher accuracy achieved than traditional methods detecting corrosion.AbstractGround-penetrating radar (GPR) a prominent non-destructive testing (NDT) method corrosivity evaluation structures. Most interpretation rely solely on the absolute values of reflection intensity,...

As the articulated trucks are mainly used for long distance transportations, design of suspension system became a major concern and research hotspot not only ride comfort driving safety but also energy consumption. Therefore, objective this study is to conduct comprehensive parametrical–based conflict analysis between road holding together with potential power shock absorbers. The simulation performed using 23 degree-of-freedom full truck semi-trailer mathematical model random surface model....

This paper investigates the effects of tire characteristics on vehicular rollover and lateral stability. Two types with different adhesion coefficients were selected to evaluate relation between propensity Simulations used calculate critical factor analyze parameters handling, including center gravity, payload condition, vehicle speed, two proposed tires. To replicate an actual response, particularly during extreme driving operations, a two-degrees freedom (DOF) planar two-track model...

Abstract Transportation sector is a primary consumer of different energy resources, especially in vehicles. Accordingly, industrial society needs novel affordable strategies, accessible and sustainable for fuel economy reducing the exhaust emissions from combustion engines. The wear friction are principal reason dissipation owing to frictional losses that reach 17-19% engine output power. Improving tribological properties engines performance straightforward approach saving decreasing using...