Cargando…
Heat-Integrated Exhaust Purification for Natural Gas Powered Vehicles : System Theory, Design Concepts, Simulation and Experimental Evaluation.
Annotation
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Berlin :
Logos Verlag Berlin,
2014.
|
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Intro; Symbols and abbreviations; Zusammenfassung; Abstract; 1 Introduction; 1.1 Engine concepts and specific challenges for exhaust purification; 1.2 Heat-integrated exhaust purification; 1.3 Thesis objectives and structure; 2 Simulation models; 2.1 1D-multiphase simulation models; 2.1.1 Heat-exchanger reactor; 2.1.2 Reference system; 2.2 Simplified mathematical models for stationary analysis; 2.2.1 Introduction and motivation; 2.2.2 Quasihomogeneous models for exemplary design cases; 3 Stationary simulations; 3.1 Parameter continuation and stability analysis in DIANA.
- 3.2 Analysis of stationary operating behavior3.2.1 Standard ceramic monolith with catalytic coating; 3.2.2 Fully coated heat-exchanger concept; 3.2.3 Partially coated heat-exchanger concept; 3.3 Continuation of design specifications; 3.3.1 Standard ceramic honeycomb; 3.3.2 Heat-integrated systems; 3.4 Conclusions; 4 Dynamic simulations; 4.1 Transient behavior of partially coated heat exchanger; 4.1.1 Heating in countercurrent operating mode; 4.1.2 Heating with flap/bypass system; 4.2 Heating strategies for operation under drive cycle conditions.
- 4.2.1 Feed conditions for drive cycle simulations4.2.2 Geometric properties of full-scale systems; 4.2.3 Bypass/flap system, no auxiliary heating; 4.2.4 Bypass/flap system with electric auxiliary heating; 4.3 Sequential system; 4.3.1 Geometric properties of full-scale sequential prototype; 4.3.2 Comparative study on NEDC performance; 4.4 Conclusions; 5 Reactor prototypes and experimental evaluation; 5.1 Folded sheet prototype; 5.1.1 Reactor layout and dimensions; 5.1.2 Stationary experimental evaluation; 5.2 Brazed prototype; 5.2.1 Reactor layout and dimensions.
- 5.2.2 Stationary experimental evaluation5.2.3 Comparison of heat exchanger performance; 5.2.4 Stationary stoichiometric conditions; 5.3 Sequential system
- experimental evaluation; 5.3.1 Reactor layout and dimensions; 5.3.2 Transient cold start experiments; 5.3.3 Stationary experiments; 5.4 Conclusions; 6 Directions for future work; Bibliography; A Experimental Facilities; B Derivation of quasihomogeneous model equations; C Approximation of light-off temperatures; D Geometric and thermophysical properties of simulation models.