Sökning: "HCCI combustion"
Visar resultat 16 - 20 av 76 avhandlingar innehållade orden HCCI combustion.
16. Optical Diagnostics of Gasoline Compression Ignition : HCCI-PPC-Diffusion Combustion
Sammanfattning : Access to clean and affordable energy is one of the cornerstones of the world's society. Since the introduction of the internal combustion engine, diesel engines have become widely used for transportation in the commercial sector. LÄS MER
17. Low Emission Concepts for Diesel Engines
Sammanfattning : In the recent past, the Diesel engine has been improved considerably in the areas of performance, fuel efficiency and exhaust emissions. In Europe, these improvements have resulted in a strong increase in the sales of passenger cars equipped with a Diesel engine. LÄS MER
18. Stochastic Reactor Models for Engine Simulations
Sammanfattning : The aim of the thesis work is the further development of practical engine simulation tools based on Stochastic Reactor Models, SRMs. Novel and efficient implementations were made of a variety of SRMs adapted to different engine types. The models in question are the HCCI-SRM, the TwoZone SI-SRM and the DI-SRM. LÄS MER
19. CFD Modelling of a Free-Piston Engine Using Detailed Chemistry
Sammanfattning : The Free Piston Engine, FPE, which is capable of operating in a variable compression ratio mode, is highly suitable for the promising Homogeneous Charge Compression Ignition (HCCI) concept, allowing flexible auto-ignition control on a cycle-to-cycle basis without any hardware modifications. In this study, the effects of varying the start of injection on the emission formation and efficiency of such an engine have been investigated, using simulations based on the KIVA-3V CFD code. LÄS MER
20. BlueBellMouse. A Tool for Kinetic Model Development
Sammanfattning : The simulation of physical phenomena occurring in chemical reactors requires the description of the kinetics involved in the underlying combustion process. Kinetic models are developed for this purpose. LÄS MER