Search for dissertations about: "Lars Nielsen"

Showing result 1 - 5 of 29 swedish dissertations containing the words Lars Nielsen.

  1. 1. Single-Zone Cylinder Pressure Modeling and Estimation for Heat Release Analysis of SI Engines

    Author : Markus Klein; Lars Eriksson; Lars Nielsen; Per Tunstål; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; heat release; parameter estimation; prior knowledge; regularization; specific heat ratio; compression ratio; Systems engineering; Systemteknik;

    Abstract : Cylinder pressure modeling and heat release analysis are today important and standard tools for engineers and researchers, when developing and tuning new engines. Being able to accurately model and extract information from the cylinder pressure is important for the interpretation and validity of the result. READ MORE

  2. 2. Modeling for control of centrifugal compressors

    Author : Oskar Leufvén; Lars Eriksson; Lars Nielsen; José Galindo; Linköpings universitet; []
    Keywords : ;

    Abstract : Downsizing and turbocharging of engines provide a way to meet increasing demands for efficiency and performance in the automotive industry. An engine design is a result of compromises, e.g. the selection of charging system, and the trend is to reduce these compromises by increasing system complexity. READ MORE

  3. 3. Optimal Engine Operation in a Multi-Mode CVT Wheel Loader

    Author : Tomas Nilsson; Jan Åslund; Lars Nielsen; Anders Fröberg; Lars Johanneson Mårdh; Linköpings universitet; []
    Keywords : ;

    Abstract : Throughout the vehicular industry there is a drive for increased fuel efficiency. This is the case also for heavy equipment like wheel loaders. The operation of such machines is characterized by its highly transient nature, the episodes of high tractive effort at low speed and that power is used by both the transmission and the working hydraulics. READ MORE

  4. 4. Modelling for Fuel Optimal Control of a Variable Compression Engine

    Author : Ylva Nilsson; Lars Eriksson; Lars Nielsen; Richard K. Stobart; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; combustion engine; modelling; Vehicle engineering; Farkostteknik;

    Abstract : Variable compression engines are a mean to meet the demand on lower fuel consumption. A high compression ratio results in high engine efficiency, but also increases the knock tendency. On conventional engines with fixed compression ratio, knock is avoided by retarding the ignition angle. READ MORE

  5. 5. Control of EGR and VGT for Emission Control and Pumping Work Minimization in Diesel Engines

    Author : Johan Wahlström; Lars Nielsen; Lars Eriksson; Gianfranco Rizzo; Linköpings universitet; []

    Abstract : Legislators steadily increase the demands on lowered emissions from heavy duty vehicles. To meet these demands it is necessary to integrate technologies like Exhaust Gas Recirculation (EGR) and Variable Geometry Turbochargers (VGT) together with advanced control systems. READ MORE