Cargando…
Experimental Investigations on Particle Number Emissions from GDI Engines.
Annotation
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Berlin :
Logos Verlag Berlin,
2016.
|
| Colección: | Forschungsberichte Aus Dem Institut Für Kolbenmaschinen Ser.
|
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Intro; 1 Introduction; 2 Fundamentals on particle emissions from GDI engines; 2.1 Combustion generated particles; 2.2 Soot formation; 2.3 Particle number measurement; 2.4 Sources of PN emissions in GDI engines
- Scientific knowledge; 2.4.1 Mechanism of PN formation; 2.4.2 Mixture formation in GDI engines; 2.4.3 Inflammation in GDI engines; 2.4.4 Tip-Sooting; 2.4.5 Exhaust gas recirculation; 2.4.6 Fuel-composition; 3 Experimental setup; 3.1 Test bench setup; 3.2 Engine data; 3.2.1 Ignition systems; 3.2.2 Fuel properties and injector specifications; 3.3 Numerical analysis.
- 3.4 Optical diagnostics3.4.1 Mie-scattering; 3.4.2 Radiation of flames; 3.4.3 Adaption of the high-speed measurement equipment; 3.4.4 Spark plug with fibre optical access
- post-processing; 3.5 Particle Image Velocimetry; 3.5.1 Setup PIV; 3.5.2 Particles used for PIV; 3.5.3 Post-processing PIV; 3.6 Pressure chamber; 4 Pressure chamber results; 4.1 Injector characterisation in the pressure chamber; 4.2 Spray penetration and break-up as a function of hydraulic flow and injection pressure; 4.3 Initial penetration velocity as a function of hydraulic flow and injection pressure.
- 4.4 Changes of temperature and pressure in the chamber5 Engine results; 5.1 Influence of large scale charge motion; 5.1.1 Large scale charge motion using inlays; 5.1.2 Large scale charge motion and early intake closing; 5.2 Variation of air-fuel-ratio; 5.3 Influence of residual gas concentration; 5.4 Effect of external, high pressure EGR on PN emissions; 5.4.1 Influence of EGR cooling; 5.4.2 EGR and charge motion; 5.5 Influence of injector static flow and injection pressure; 5.5.1 Influence of injector static flow at low engine load; 5.5.2 Influence of injector static flow at WOT operation.
- 5.5.3 Influence of injector static flow at boosted operation5.5.4 Influence of injection pressure at boosted operation; 5.6 Influence of fuel composition and fuel temperature on PN formation; 5.6.1 Fuel temperature; 5.6.2 Fuel composition; 5.7 Influence of lubricant and coolant temperature on PN formation; 5.7.1 Engine lubricant temperature; 5.7.2 Engine coolant temperature; 5.8 Inflammation and PN formation; 6 Summary and conclusions.