Sökning: "idling"

Visar resultat 6 - 10 av 28 uppsatser innehållade ordet idling.

  1. 6. Beräkningsmodell för oljekylare

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Lisa Nordling; [2022]
    Nyckelord :Oljekylare; hydraulik; värmeutveckling;

    Sammanfattning : In this thesis, a calculation model for oil coolers has been worked on for Ursviken Technology AB press brakes Optima and Optiflex. Analysis of the theory behind physical phenomena has shown that a series of factors in a hydraulic system give rise to heat increase of hydraulic oil. LÄS MER

  3. 7. Understanding particulate matter - Material analyses of real-life diesel particulate filters and correlation to vehicles’ operational data

    Master-uppsats, KTH/Kemiteknik

    Författare :Linus Nordin; [2021]
    Nyckelord :Diesel particulate filter; Ash measurement method development; Correlation study; Operational parameters; Principal component analysis; Dieselpartikelfilter; Askanalys metodutveckling; Korrelationsstudie; Driftsparametrar; Principal component analysis;

    Sammanfattning : Syftet med denna studie var att undersöka effekterna av driftsparametrar på ett antal mätbara askrelaterade parametrar i dieselpartikelfilter (DPF) i tunga fordon. Tidigare studier visar att askans packningsdensitet, askflöde och hur askan fördelas inuti ett DPF är beroende av parametrar som temperatur, avgasflöde och oljeförbrukning ett fordon har. LÄS MER

  4. 8. Influences of black carbon levels in the micro-environment inside urban buses

    Kandidat-uppsats, Stockholms universitet/Institutionen för miljövetenskap

    Författare :Anton Dahlberg; [2020]
    Nyckelord :Black carbon; buses; in-cabin; urban air pollution;

    Sammanfattning : Several studies indicate that the cabin of buses is the micro-environment in urban public transport where commuters might be the most exposed to black carbon. Black carbon functions as an indicator of air pollution, which is shown to have harmful impacts on the human body and because it may lead to cancers, systemic inflammation, and cardiovascular diseases, it is listed as one of the top causes to premature deaths, globally. LÄS MER

  5. 9. The Generation and Development of Trust in the Sharing Economy : From the seller's perspective

    Master-uppsats, Uppsala universitet/Industriell teknik

    Författare :Shuyue Fei; [2020]
    Nyckelord :The sharing economy; trust;

    Sammanfattning : The sharing economy (SE) is a new business model that can optimize allocation of resources by enabling people share the idling assets through the online platform without the transformation of ownership. One of the important characteristics of SE is to build up interpersonal trust, which is the foundation of SE. LÄS MER

  7. 10. CONSTRUCTION EQUIPMENT FUEL CONSUMPTION DURING IDLING : Characterization using multivariate data analysis at Volvo CE

    Uppsats för yrkesexamina på avancerad nivå, Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Författare :Mujtaba Hassani; [2020]
    Nyckelord :Idling condition; environmental effect; diesel fuel; machine learning; multivariate data analysis; partial least square regression; support vector machine regression; principal component analysis; principal component regression; correlation coefficient matrix; artificial neural network; exhaust emission reduction techniques; global warming; emission regulation; CO2 estimation techniques; Gaussian process regression;

    Sammanfattning : Human activities have increased the concentration of CO2 into the atmosphere, thus it has caused global warming. Construction equipment are semi-stationary machines and spend at least 30% of its life time during idling. The majority of the construction equipment is diesel powered and emits toxic emission into the environment. LÄS MER