Search for dissertations about: "EGR"

Showing result 21 - 25 of 78 swedish dissertations containing the word EGR.

  2. 21. Diluted Operation of a Heavy-Duty Natural-gas Engine

    Author : Mehrzad Kaiadi; Förbränningsmotorer; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Fuel economy and emissions are the two central parameters in heavy duty engines; most of the existing heavy duty engines are run with diesel. The overall efficiency of diesel engines is good however they suffer from high levels of emissions mainly NOX and soot. READ MORE

  4. 22. Divided Exhaust Period on Heavy-Duty Diesel Engines

    Author : Stefan Gundmalm; Hans-Erik Ångström; Fredrik Ekström; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Due to growing concerns regarding global energy security and environmental sustainability it is becoming increasingly important to increase the energy efficiency of the transport sector. The internal combustion engine will probably continue to be the main propulsion system for road transportation for many years to come. READ MORE

  5. 23. Model Predictive Control (MPC) of an Advanced Multi-Cylinder Engine for Transient Operations

    Author : Lianhao Yin; Institutionen för energivetenskaper; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MPC; Receding horizon sliding mode control; PPC;

    Abstract : The transportation sector is one of the main contributors to greenhouse gas CO2 and emission of toxic gas. In this sector, advanced technologies and innovations to increase engine efficiency is an important research topic. Low-Temperature Combustion (LTC) concepts are effective approaches for high-efficiency engines. READ MORE

  6. 24. Particulate Matter Emissions from Partially Premixed Combustion with Diesel, Gasoline and Ethanol

    Author : Mengqin Shen; Förbränningsmotorer; []
    Keywords : PPC; PM emissions; Diesel; Gasoline; Ethanol; Particle size distribution;

    Abstract : To achieve cleaner combustion and higher efficiency in compression ignition (CI) engines, many new combustion strategies have been developed. Among these new concepts, partially premixed combustion (PPC) attracts a lot of attention, because of its possibility to achieve simultaneously low soot and NOx. READ MORE

  7. 25. Injector Nozzle Hole Parameters and their Influence on Real DI Diesel Performance

    Author : Mikael Lindström; Hans- Erik Ångström; Öivind Andersson; KTH; []
    Keywords : Mechanical engineering; Maskinteknik;

    Abstract : A modern diesel engine is capable of running efficiently with low exhaust gas emissions over a wide operating range. This is thanks to techniques such as turbocharging, EGR, charge air cooling and an advanced fuel injection process. The fuel injection process is important for the combustion and emission formation in the diesel engine. READ MORE