Sökning: "turbocharging"

Visar resultat 6 - 10 av 25 avhandlingar innehållade ordet turbocharging.

  1. 6. Evaluation of a Variable Nozzle Turbine Turbocharger on a Diesel Engine under Steady and Transient Conditions

    Författare :Ralf Barkhage; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; diesel engine; emissions; transient operation; control system; fuel economy; variable geometry turbocharging; engine performance; variable nozzle turbine; supercharging;

    Sammanfattning : The growing global call for reduced emissions and fuel consumption together with the market call for engines with higher power density and application-oriented torque curves can be met using turbochargers with variable geometry turbines (VGT). The second generation of VGT turbochargers is currently being developed and is starting to appear on the market. LÄS MER

  3. 7. Simulation of turbocharged SI-engines - with focus on the turbine

    Författare :Fredrik Westin; Hans-Erik Ångström; Gordon P Blair; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering design; turbocharging simulation 1D turbine accuracy SI-engine; Konstruktionsteknik; Construction engineering; Konstruktionsteknik;

    Sammanfattning : The aim is to share experience gained when simulating (and doing measurements on) the turbocharged SI-engine as well as describing the limits of current state of the technology. In addition an overview of current boosting systems is provided. LÄS MER

  4. 8. Transient simulations of heavy-duty diesel engines with focus on the turbine

    Författare :Niklas Winkler; Hans-Erik Ångström; Håkan Björnsson; KTH; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The finite response time of the turbocharger is the most notable effect oftransient operation on a turbocharged diesel engine. To fulfil future emission requirements high amounts of transient EGR will be required. LÄS MER

  5. 9. Divided Exhaust Period on Heavy-Duty Diesel Engines

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

    Sammanfattning : 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. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER