Sökning: "early direct-injection"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden early direct-injection.
1. Lagrangian CFD Modeling of Impinging Diesel Sprays for DI HCCI
Sammanfattning : The homogeneous charge compression ignition (HCCI) concept has been acknowledged as a potential combustion concept for engines, due to low NOx and soot emissions and high efficiency, especially at part-load. Early direct-injection (DI) during the compression stroke is an option when Diesel fuel is used in HCCI. LÄS MER
2. Experimental Investigation of Impinging Diesel Sprays for HCCI Combustion
Sammanfattning : Engine research and development is to a large extent driven by the quest of lowering exhaust emissions and fuel consumption. The combination of low emissions and low fuel consumption is not the simultaneous characteristic of the world’s primary engine concepts, the diesel and the spark-ignited (SI) engine. LÄS MER
3. Liquid chromatography : mass spectrometry study of two biochemical alcohol markers
Sammanfattning : The interest in biochemical alcohol markers for detecting acute and chronic alcohol consumption has expanded greatly during recent years. The development and application of laboratory tests identifying early problematic drinking and monitoring abstinence have the potential of reducing the healthcare costs and suffering associated with alcohol misuse. LÄS MER
4. Laser Diagnostics for Applications to In-Cylinder Engine Investigations
Sammanfattning : In the work presented in the thesis laser diagnostics was employed primarily in the investigation of engines, but was also used to study soot in flames. Quantitative measurements were performed for visualizing both in-cylinder soot formation and DME sprays in a combustion vessel. LÄS MER
5. Large-Eddy Simulation of Gasoline Fuel Spray Injection at Ultra-High Injection Pressures
Sammanfattning : Gasoline direct injection is a state-of-the-art technique that reduces hydrocarbon and particulate emissions. However, further improvement is needed to meet current as well as future emission regulations. LÄS MER