This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Gas Exchange Optimization and the Impact on Emission Reduction for HSDI Diesel Engines
Technical Paper
2009-01-0653
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The main tasks for all future powertrain developments are: regulated emissions, CO2-values, comfort, good drivability, high reliability and affordable costs.
One widely discussed approach for fuel consumption improvement within passenger car applications, is to incorporate the downsizing effect. To attain constant engine performance an increase of boost pressure and/or rated speed is mandatory. In both cases, the mass flow rate through the intake and exhaust ports and valves will rise. In this context, the impact of the port layout on the system has to be reassessed.
In this paper, the impact of the port layout on a modern diesel combustion system will be discussed and a promising concept shall be described in detail. The investigations shown include flow measurements, PIV measurements of intake flow, CFD simulations of the flow field during intake and results from the thermodynamic test bench. One of the important topics is to prove the impact of the flow quality on the combustion.
Based on these investigations, a new port concept shall be presented, which uses a variable valve lift to provide a highly variable swirl, a homogenous flow field in the cylinder and excellent flow coefficients, in order to increase the volumetric efficiency in combination with reduced flow losses.
Recommended Content
Authors
- Dirk Adolph - Institute for Combustion Engines, RWTH Aachen University
- Reza Rezaei - Institute for Combustion Engines, RWTH Aachen University
- Stefan Pischinger - Institute for Combustion Engines, RWTH Aachen University
- Philipp Adomeit - FEV Motorentechnik GmbH
- Thomas Körfer - FEV Motorentechnik GmbH
- Andreas Kolbeck - FEV Motorentechnik GmbH
- Matthias Lamping - FEV Motorentechnik GmbH
- Marek Tatur - FEV Inc.
- Dean Tomazic - FEV Inc.
Topic
Citation
Adolph, D., Rezaei, R., Pischinger, S., Adomeit, P. et al., "Gas Exchange Optimization and the Impact on Emission Reduction for HSDI Diesel Engines," SAE Technical Paper 2009-01-0653, 2009, https://doi.org/10.4271/2009-01-0653.Also In
Combustion and Flow Diagnostics and Fundamental Advances in Thermal and Fluid Sciences, 2009
Number: SP-2238; Published: 2009-04-20
Number: SP-2238; Published: 2009-04-20
References
- Körfer Th. Lamping M. Kolbeck A. Genz T. Pischinger S. Busch H. Adolph D. The Potential of Downsizing Diesel Engines - Considering Performance and Emissions Challenges IMechE Internal Combustion Engines, London 11. -12.12.2007
- Lamping M. Kolbeck A. Körfer Th. Adolph D. Busch H. Pischinger S. Modernes Dieselbrennverfahren zur Darstellung günstigster Motorrohemissionen bei verbessertem Verbrauchsverhalten MTZ 69 42 Vieweg Verlag Stuttgart, Deutschland 2008
- Fuchs T.R. Rutland C.J. Intake Flow Effects on Combustion and Emissions in a Diesel Engine Technical Report 980508 SAE 1998
- Miles Paul C. The Influence of Swirl on HSDI Diesel Combustion at Moderate Speed and Load Technical Report 2001-01-1829 SAE 2001
- Adomeit Philipp Pischinger S. Becker M. Rohs H. Greis A. Grünefeld G. Potential Soot and CO Reduction for HSDI Diesel Combustion Systems Technical Report 2006-01-1417 SAE 2006
- Willems W. Numerische Simulation turbulenter Scherströmungen mit einem Zwei-Skalen Turbulenzmodell Ph. D. thesis RWTH Aachen University 1996
- Hans Otto Hermann Grundsatzuntersuchungen an einem 4-Ventil direkteinspritzenden PKW-Dieselmotor Ph. D. thesis RWTH Aachen University 1995