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Showing result 1 - 5 of 37 essays matching the above criteria.

  1. 1. Simulation of road traffic flow in Hangzhou

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Louise Brandt; Anders Holmberg; [2022]
    Keywords : simulation; road traffic flow; traffic flow; traffic; sumo; netedit; dlr.de; zju; hangzhou; zhejiang; china; queue; queuing system; control; automatic control; tls; tli; phase time; cycle time; traffic light signal; traffic light intersection; pedestrian crossing; idling time; optimize traffic flow; traffic jam; un global goal; mfs; minor field study; sida; reduce emissions; emission; vehicle; pcu; matlab; python; xml; json; algorithm; variance; deviation; comparison; ratio; case; evacuation; scenario; green; detector; taz; traffic assignment zone; environment; carbon dioxide; randomtrips; flow; fringe; mingap; speeddev; departspeed; sigma; lanechangemodel; sl2015; commuter; public transport; busstop; osm; openstreetmap; sumocfg; traci; driving pattern; road lane; street lane; lane change; u-turn; intersection; junction; teleportation; teleport; route; depart; arrive; collision; street occupancy; occupancy; Technology and Engineering;

    Abstract : Is it possible to increase traffic flows and decrease stand stills in rush hour traffic by tweaking existing traffic light signals? A vehicle’s engine running on idle is not useful in physical terms and emits unnecessary exhausts. By investigating and observing signal phase times on site in Hangzhou, China, an effort was made to find out if it was possible to get better flow and thus lower emissions by changing the traffic signal programs. READ MORE

  3. 2. Investigation into Urea Deposit Risk by varying parameters in the control system related to urea evaporation

    University essay from KTH/Kemiteknik

    Author : Anna Sandström; [2022]
    Keywords : Urea Deposits; Urea Decomposition; Selective Catalytic Reduction; Urea Dosing; Ureautfällning; Ureanedbrytning; Selektiv katalytisk reduktion; Ureadosering;

    Abstract : I och med nuvarande och kommande lagkrav för utsläpp från tunga lastbilar finns en efterfrågan på utvecklade strategier för utsläppsminskning. För att kontrollera utsläppen av kväveoxider (NOx) används katalytisk omvandling med AdBlue (vätskeblandning av urea och vatten). READ MORE

  4. 3. Model Predictive Climate Control for Electric Vehicles

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Erik Norstedt; Olof Bräne; [2021]
    Keywords : MPC; model predictive control; climate control; electric vehicle; battery; thermal management; electrified vehicle; battery electric vehicle; nonlinear MPC; custom cost functions; elfordon; temperaturreglering;

    Abstract : This thesis explores the possibility of using an optimal control scheme called Model Predictive Control (MPC), to control climatization systems for electric vehicles. Some components of electric vehicles, for example the batteries and power electronics, are sensitive to temperature and for this reason it is important that their temperature is well regulated. READ MORE

  5. 4. Automatic detection of the fuel composition in a Diesel Engine : Identifying fuel composition in the fuel system of a combustion engine and optimising for computational complexity

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Andree Hultgren; [2021]
    Keywords : Fuel Detection; Machine Learning; Feature Selection; Computational Complexity; Bränsledetektering; Maskininlärning; Paremeterval; Beräkningskomplexitet;

    Abstract : The transportation industry is responsible for 26% of all emission of greenhouse gases in the European Union. Many steps are being taken to minimise greenhouse gas emissions. The most effective way to reduce the emission of greenhouse gases is by transitioning to biofuels. READ MORE

  6. 5. Identifying risks of AdBlue spray on stainless steel surfaces

    University essay from KTH/Kemiteknik

    Author : Evelina Tvinne Flyg; [2021]
    Keywords : Urea; Stainless steel; SCR; Deposit; Corrosion; Urea; rostfritt stål; SCR; Avlagring; Korrosion;

    Abstract : Utsläppskontroll, reglerad av allt strängare lagstiftning, ställer höga krav på utvecklingen av noggranna efterbehandlingssystem för avgaser. När det gäller utsläpp från dieselmotorer utgör NOx-minskning en av de största utmaningarna. För tunga fordon tacklas denna utmaning ofta genom ett SCR-system. READ MORE