Search results for "Automotive Engineering"

Preliminary Experimental Study on Double Fuel HCCI Combustion

2015

AbstractThis paper regards an experimental study on a particular internal combustion engine process which combines Double Fuel combustion with Homogeneous Charge Compression Ignition (HCCI) using mixtures of natural gas (NG) and gasoline. The tests performed on a CFR engine demonstrate that HCCI combustion can be achieved using NG-gasoline mixtures without knocking occurrence for low to medium engine load varying the proportion between the two fuels. The main advantage of this new combustion process relies on the noticeable higher engine efficiency obtained with respect to conventional spark ignition operation, and on the strong reduction of NOX emissions.

IEEE Std. 1459 power quantities ratio approaches for simplified harmonic emissions assessment

2018

The paper investigates the suitability of using power ratio parameters for harmonic emissions assessment at the point of common coupling (PCC). The study is carried out starting from the IEEE Std. 1459-2010 apparent power decomposition, where power factors are defined for evaluating line utilization and harmonic pollution levels. In addition, the study investigates the behavior of new parameters, which are expressed in terms of ratio between IEEE Std. 1459-2010 power quantities. The study is carried out for both single-phase and three-phase case, also considering the presence of capacitors. ? 2018 IEEE.

Anomalous electrical parameters improvement in Ruthenium DSSC

2018

. In this work, we present a series of measurements carried out on Ruthenium-based Dye Sensitized Solar Cells (DSSCs) after the application of different external electrical field values. Such measurements have been performed both in the dark and by illuminating the sample with sunlight emitted by a solar simulator (AM1.5G spectrum with a power irradiance of 1000 W/m2). Our results demonstrate that the initial electrical bias field modifies in both cases the behavior of the cell in terms of an anomalous improvement of the main electrical parameters.

Driver Distraction Detection Using Bidirectional Long Short-Term Network Based on Multiscale Entropy of EEG

2022

Driver distraction diverting drivers' attention to unrelated tasks and decreasing the ability to control vehicles, has aroused widespread concern about driving safety. Previous studies have found that driving performance decreases after distraction and have used vehicle behavioral features to detect distraction. But how brain activity changes while distraction remains unknown. Electroencephalography (EEG), a reliable indicator of brain activities has been widely employed in many fields. However, challenges still exist in mining the distraction information of EEG in realistic driving scenarios with uncertain information. In this paper, we propose a novel framework based on Multi-scale entrop…

Modeling and improvement of the tricycle braking system for controlled skidding

2021

In the current paper was approached the braking system of tricycles for controlled skidding, which are used by lovers of extreme sports. The complete modeling of such a tricycle has been performed and its braking system has been improved for a great performance and a better controlled braking. Also, simulation tests were performed using the finite element to achieve the best constructive variant of the brake disc.

Miquel Juan, Matilde, Pérez Monzón, Olga y Martinez Taboada, Pilar (eds.) "Afilando el pincel, dibujando la voz. Prácticas pictóricas góticas". Madri…

2018

Purísima 3: un ejemplo de villa periurbana en "Valentia"

2017

espanolEste articulo tiene como objetivo mostrar los restos ineditos de un espacio domestico situado en los suburbia de Valentia, a menos de 1 km del pomoerium, de caracteristicas unicas en la ciudad. Se trata de una serie de estancias pavimentadas con mosaicos de opus tessellatum, decorados con motivos geometricos y vegetales bicromos de gran calidad. Destaca la presencia de un peristilo trapezoidal como espacio redistribuidor. En suma, se trata de un interesante ejemplo de arquitectura privada periurbana, cuya situacion responde al desarrollo de los suburbia, poco estudiados en el ambito valenciano. EnglishThis paper aims to show the inedit rests of a suburban domestic space found in Vale…

Satisfaction and loyalty in B2B relationships in the freight forwarding industry: adding perceived value and service quality into equation

2018

This paper focuses on analysing the determinants of satisfaction (service quality, perceived value), as well as its possible influence on customer loyalty of freight forwarders to freight transport service providers (by road/maritime/air) in Spain. To this end, we propose a causal model tested using information from 205 freight forwarders collected through personal interviews. The model was estimated using the Partial Least Squares (PLS) approach. Moreover, the existence of differences in the perceptions on the analysed variables between transport modes is tested through ANOVA. Results show that service quality has an influence on customer satisfaction, both directly, as well as through per…

An uncommon case of sarcomatoid urothelial carcinoma in covered bladder exstrophy

2016

Abstract We report a case of a woman affected by covered exstrophy, uterus didelphys and external genital malformation presenting with advanced bladder cancer. After neoadjuvant therapy and anterior pelvic exenteration, the abdominal wall was reconstructed with a pedicled myocutaneous muscle-sparing vastus lateralis flap.

Validation of the Cycling Behavior Questionnaire: A tool for measuring cyclists' road behaviors

2018

Abstract Introduction Even though cycling is an activity whose benefits in terms of urban mobility and health are globally recognized, its disproportional growth during the past few decades has led to some unexpected dynamics. In fact, the increasing number of traffic injuries and deaths involving cyclists has a high cost for public health systems. Considering the available empirical evidence, aberrant and positive behaviors on the road constitute relevant predictors for the injuries suffered by road users. Nevertheless, the scarcity of tools that measure and evaluate the behavior of road users, especially in the case of cyclists, constitutes a serious lack in terms of explaining, interveni…