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Optimized Air Intake for a Turbocharged Engine Taking into Account Water-Cooled Charge Air Cooler Reflective Properties for Acoustic Tuning
Technical Paper
2013-01-0575
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Unsteady intake wave dynamics have a first order influence on an engine's performance and fuel economy. There is an abundant literature particularly for naturally aspirated SI engines on the subject of intake manifolds and primary runner lengths aimed to achieve a tuned intake air line. A more demanding design for today's engines is to increase efficiency to meet the requirements of lower fuel consumption and CO2 emissions. Today's tendencies are downsizing the engine to meet these demands. And for drivability purposes, the engine is combined with a turbocharger coupled with a charge air cooler. However, when the engine's displacement is reduced, it will be very dependent on its boosting system. A particularly interesting point to address corresponds to the engine's operation in the low speed range and during transients where the engine has large pumping losses and poor boost pressure. This operation point can be optimized using acoustic supercharging techniques. The proposed solution for a turbocharged engine is through an optimized air intake system from the compressor outlet to the intake valves. In this paper such a dedicated line is experimentally proposed on a four cylinder Diesel engine. First the reflective properties of a water-cooled charge air cooler are highlighted and compared to a traditional air charge cooler. This was done experimentally on an engine test bench using wave decomposition techniques through forward and backward components. Secondly this reflection is put to use by employing an adequate pipe length between the intake manifold and the charge air cooler aimed to improve low end torque and transient response. A series of pipe lengths were investigated and a final one is shown to give the greatest pressure wave amplitudes upstream of the intake valves for a low rpm range where the compressor provides little work. As a result it is shown that acoustic tuning is still possible on a turbocharged engine with a reduced plenum volume thus keeping costs low. Finally a GT-Power model of the engine is built where the exhaust and intake lines were correctly modeled. Then, the dynamics of intake system were replaced by an artificial excitation boundary which can be controlled independently and would correctly interact with the intake valves. Thus the optimized pressure waves obtained from the experimental measurements are fed directly into the intake of the model. The latter calculates the mean value of pressure only. Therefore rendering possible the prediction of the CO2 gain obtained from such an optimized line.
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Authors
- Haitham Mezher - Mann + Hummel - Ecole Centrale de Nantes
- Jerome Migaud - Mann + Hummel
- Vincent Raimbault - Mann + Hummel
- Jean-Gabriel Lelong - Mann + Hummel
- David Chalet - Ecole Centrale De Nantes
- Nicolas Perrot - Ecole Centrale De Nantes
- Alexandre Hunault - Mann + Hummel
- Pascal Chesse - Ecole Centrale De Nantes
- Bernhard Huurdeman - Mann + Hummel
Topic
Citation
Mezher, H., Migaud, J., Raimbault, V., Lelong, J. et al., "Optimized Air Intake for a Turbocharged Engine Taking into Account Water-Cooled Charge Air Cooler Reflective Properties for Acoustic Tuning," SAE Technical Paper 2013-01-0575, 2013, https://doi.org/10.4271/2013-01-0575.Also In
References
- MOCK P. European Commission consultation on Reducing CO2 emissions from road vehicles - Additional comments International Council on Clean Transportation Washington DC December 9 2011
- WINTERBONE D.E. The theory of wave action approaches applied to reciprocating engines Internal combustion engineering: science & technology Science E. A. London Weaving JH 1990 445 500
- BROOME D. Induction ram. Part 1, the inertia and waves effects Automobile engineer 130 133 April 1969
- DESMET B. Contribution à l'étude de l'influence du circuit d'aspiration sur le remplissage d'un moteur diesel PhD Thesis L'Université des Sciences et Techniques de Lille 1977
- ENGELMAN H. Design of a tuned intake manifold Proceedings of the ASME conference on Diesel and Gas Power, ASME paper 73-WA/DGP-2 1973
- Matsumoto , I. and Ohata , A. Variable Induction Systems to Improve Volumetric Efficiency at Low and/or Medium Engine Speeds SAE Technical Paper 860100 1986 10.4271/860100
- Ohata , A. and Ishida , Y. Dynamic Inlet Pressure and Volumetric Efficiency of Four Cycle Four Cylinder Engine SAE Technical Paper 820407 1982 10.4271/820407
- CHALET , D. , MAHE , A. , HETET , J.F. and MIGAUD , J. A new modeling approach of pressure waves at the inlet of internal combustion engines Journal of Thermal Science 20 2 181 188 10.1007/s11630-011-0455-8 2011
- CHALET , D. , MAHE , A. , MIGAUD , J. and HETET , J.F. A frequency modeling of the pressure waves in the inlet manifold of internal combustion Applied Energy 88 9 2988 2994 0306-2619 10.1016/j.apenergy.2011.03.036 2011
- CHALET , D. , MAHE , A. , MIGAUD , J. and HETET , J.F. Multi-frequency modeling of unsteady flow in the inlet manifold of an internal combustion engine Proc. IMechE Part D: J. Automobile Engineering 226 648 658 10.1177/0954407011423745 2012
- DZUNG L. Pressure pulsation at the intake of a supercharged internal combustion engine Brown Boveri Rev 39 295 305 1952
- RYTI M. Pulsation in the air intake systems of turbocharged diesel engines Brown Boveri Rev. 52 90 203 1965
- BANISOLEIMAN K. , SMITH L. and FRENCH B. The interaction of diesel engine turbocharging and tuned inlet manifold systems under steady state and transient operation IMechE, Part A: Journal of Power and Energy 269 281 1991
- HARRISON M. and DUNKLEY A. The acoustics of racing engine intake systems Journal of Sound and Vibration 271 959 984 2004
- CSER G. Double Resonance System - a new way to improve the low-speed operation of supercharged engines IMechE C405/013 1990
- WATSON N. Resonant intake and variable geometry turbocharging systems for a V-8 diesel engine J. Power Energy 197 Proc. Instn Mech. Engrs., Part A 27 36 1983
- Sato , A. , Suenaga , K. , Noda , M. , and Maeda , Y. Advanced Boost-up in Hino EP100-11 Turbocharged and Charge-Cooled Diesel Engine SAE Technical Paper 870298 1987 10.4271/870298
- WINTERBONE D.E. and PEARSON R.J. Theory of Engine Manifold Design: Wave Action Methods for IC Engines Professional Engineering Publishing 2000
- HARRISON M.F. and STANEV P. Measuring wave dynamics in IC engine intake systems Journal of Sound and Vibration 269 389 408 2004
- BRUNEAU M. Manuel d'acoustique fondamentale 2-86601-712-9 1264-4692 Paris Hermes 1998
- HEYWOOD J. B. Internal combustion Engine Fundamentals Singapore Mcgraw-Hill 1988
- BOREL M. Les phénomènes d'ondes dans les moteurs Publications de l'IFP, Editions TECHNIP 2000
- MUNJAL M. L. Acoustics of ducts and mufflers with application to exhaust and ventilation system design l John Wiley & Sons 1987
- DAVIES P.O.A.L. Practical flow duct acoustic Journal of Sound and Vibration 124 1 91 115 1988
- HISCHBERG P. M.C.A.M A. , WIJNANDS A. and REIHNEN A.P.J. Damping and reflection coefficient measurements for an open pipe at low mach and Helmholtz numbers Journal of Fluid Mechanics 256 499 534 1993
- MUNT R. Acoustic transmission properties of a jet pipe with subsonic jet flow: I. the cold jet reflection coefficient Journal of Sound and Vibration 142 3 413 436 1990
- Ostrowski , G. , Neely , G. , Chadwell , C. , Mehta , D. et al. Downspeeding and Supercharging a Diesel Passenger Car for Increased Fuel Economy SAE Technical Paper 2012-01-0704 2012 10.4271/2012-01-0704
- BIRCKETT A. , TOMAZIC D. , BOWYER S. , WETZEL P. , BEVAN K. and Keidel S. Engine and Vehicle Simulations of a 1.6L Light Duty Diesel Engine with Supercharger-Turbocharger and Twin Turbocharger Boosting Systems 17th Supercharging Conference Dresden 13 14 September 2012