Transient Optimization of a Medium Duty Diesel Engine Equipped with a High Pressure EGR and Variable Nozzle Turbocharger
Title | Transient Optimization of a Medium Duty Diesel Engine Equipped with a High Pressure EGR and Variable Nozzle Turbocharger PDF eBook |
Author | Justin Brett Pennington |
Publisher | |
Pages | 286 |
Release | 2016 |
Genre | Electronic dissertations |
ISBN |
A medium-duty diesel engine is equipped with a High Pressure EGR (Exhaust Gas Recirculation) and a VNT (Variable Nozzle Turbine) and coupled to an AC Dynamometer. The control of the HPEGR and VNT will be optimized during steady state and transient engine operation to lower nitric oxide and particulate matter production as well as fuel consumption. Brake specific particulate matter, nitric oxide, and fuel consumption will be recorded with fast measurement systems capable of capturing results of transient events. A steady state map of engine speed and load will be used to calibrate initial VNT and EGR control. The calibration will be optimized with a defined formula using emissions production and fuel consumption. After a steady state VNT and HPEGR map is created, the map will be used as a baseline in transient engine operation. The dissertation will contain three parts. Firstly, VNT and HPEGR control assigned via the steady state table will be used during transient events, which will then be increased in speed from a 10 second to a 2 second event. Secondly, the VNT and EGR control will be manually configured in attempt to improve engine performance throughout the transient. Finally, the VNT and EGR control will be applied before the transient event to inspect the effect on engine performance.
Diesel Engine Transient Operation
Title | Diesel Engine Transient Operation PDF eBook |
Author | Constantine D. Rakopoulos |
Publisher | Springer Science & Business Media |
Pages | 408 |
Release | 2009-03-10 |
Genre | Technology & Engineering |
ISBN | 1848823754 |
Traditionally, the study of internal combustion engines operation has focused on the steady-state performance. However, the daily driving schedule of automotive and truck engines is inherently related to unsteady conditions. In fact, only a very small portion of a vehicle’s operating pattern is true steady-state, e. g. , when cruising on a motorway. Moreover, the most critical conditions encountered by industrial or marine engines are met during transients too. Unfortunately, the transient operation of turbocharged diesel engines has been associated with slow acceleration rate, hence poor driveability, and overshoot in particulate, gaseous and noise emissions. Despite the relatively large number of published papers, this very important subject has been treated in the past scarcely and only segmentally as regards reference books. Merely two chapters, one in the book Turbocharging the Internal Combustion Engine by N. Watson and M. S. Janota (McMillan Press, 1982) and another one written by D. E. Winterbone in the book The Thermodynamics and Gas Dynamics of Internal Combustion Engines, Vol. II edited by J. H. Horlock and D. E. Winterbone (Clarendon Press, 1986) are dedicated to transient operation. Both books, now out of print, were published a long time ago. Then, it seems reasonable to try to expand on these pioneering works, taking into account the recent technological advances and particularly the global concern about environmental pollution, which has intensified the research on transient (diesel) engine operation, typically through the Transient Cycles certification of new vehicles.
Experimental Study of Transition of Transient Emmisions in Turbocharged High Speed Direct Injection (HSDI) Diesel Engines
Title | Experimental Study of Transition of Transient Emmisions in Turbocharged High Speed Direct Injection (HSDI) Diesel Engines PDF eBook |
Author | Hyungsuk Kang |
Publisher | |
Pages | 164 |
Release | 2007 |
Genre | |
ISBN |
Transient Comparison of High Pressure and Hybrid EGR Strategies on a Light Duty Diesel Engine Using Low Temperature Combustion
Title | Transient Comparison of High Pressure and Hybrid EGR Strategies on a Light Duty Diesel Engine Using Low Temperature Combustion PDF eBook |
Author | David J. Heuwetter |
Publisher | |
Pages | 260 |
Release | 2012 |
Genre | |
ISBN |
Optimization of Heavy-duty Diesel Engine Operating Parameters at High Speed and Medium Load Using [mu]-genetic Algorithms
Title | Optimization of Heavy-duty Diesel Engine Operating Parameters at High Speed and Medium Load Using [mu]-genetic Algorithms PDF eBook |
Author | Mike P. Liechty |
Publisher | |
Pages | 414 |
Release | 2004 |
Genre | |
ISBN |
Advanced Direct Injection Combustion Engine Technologies and Development
Title | Advanced Direct Injection Combustion Engine Technologies and Development PDF eBook |
Author | H Zhao |
Publisher | Elsevier |
Pages | 761 |
Release | 2009-12-18 |
Genre | Technology & Engineering |
ISBN | 1845697456 |
Volume 2 of the two-volume set Advanced direct injection combustion engine technologies and development investigates diesel DI combustion engines, which despite their commercial success are facing ever more stringent emission legislation worldwide. Direct injection diesel engines are generally more efficient and cleaner than indirect injection engines and as fuel prices continue to rise DI engines are expected to gain in popularity for automotive applications. Two exclusive sections examine light-duty and heavy-duty diesel engines. Fuel injection systems and after treatment systems for DI diesel engines are discussed. The final section addresses exhaust emission control strategies, including combustion diagnostics and modelling, drawing on reputable diesel combustion system research and development. - Investigates how HSDI and DI engines can meet ever more stringent emission legislation - Examines technologies for both light-duty and heavy-duty diesel engines - Discusses exhaust emission control strategies, combustion diagnostics and modelling
An Investigation Into Optimization of Heavy-duty Diesel Engine Operating Parameters when Using Multiple Injections and EGR
Title | An Investigation Into Optimization of Heavy-duty Diesel Engine Operating Parameters when Using Multiple Injections and EGR PDF eBook |
Author | David T. Montgomery |
Publisher | |
Pages | 332 |
Release | 2000 |
Genre | Mechanical engineering |
ISBN |