This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Practical Considerations in the Airflow Optimization of a Single Cylinder Diesel Engine
Technical Paper
2014-01-1705
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The present work is concerned with the design of an optimum air intake system for a single cylinder reciprocating diesel engine. It is a well known fact that air flow rates of a naturally aspirated engine are sensitive to the geometrical dimensions of the pipes that connect the engine to the atmosphere. Hence, tuning intake system dimensions for optimum airflow rates is of great importance. In this scenario simulation tools can be useful for the optimization of intake system. The one dimensional simulation tool AVL BOOST is used to predict air flow rates with different combinations of connecting hose diameters and lengths. Subsequently air flow rates are measured with selected clean hoses on an engine steady state test bench. It is found in the initial tests that the lengths and diameters of optimum hoses deviate from the AVL BOOST predicted optimum geometric dimensions. Analysis of test data and measurement systems is done to find out the possible reasons for mis-match between the predictions and measurements in order to improve the airflow rates on actual engine. Findings of the analysis are presented in the paper. At the junction of the clean hose and air filter; clean hose and engine intake pipe sudden contractions and expansions in the air flow path are observed. The pressure losses associated with these junction points are different than those considered in the AVL BOOST predictions and this results in the lower air flow rates. The interplay between flow dynamics at these junction points and the air flow rates is explained. In the subsequent test trials, tapered pipes are used to merge the air filter and clean hose; clean hose and engine intake pipe.
Authors
Citation
Dwarshala, S., Ramadandi, P., Shaik, R., and Shankar, R., "Practical Considerations in the Airflow Optimization of a Single Cylinder Diesel Engine," SAE Technical Paper 2014-01-1705, 2014, https://doi.org/10.4271/2014-01-1705.Also In
References
- Heywood , J.B. Internal Combustion Engine Fundamentals TATA McGraw-Hill Publications 2011
- Stone , C. and Etminan , Y. Review of Induction System Design and a Comparison Between Prediction and Results from a Single Cylinder Diesel Engine SAE Technical Paper 921727 1992 10.4271/921727
- Sammut , G. and Alkidas , A. Relative Contributions of Intake and Exhaust Tuning on SI Engine Breathing - A Computational Study SAE Technical Paper 2007-01-0492 2007 10.4271/2007-01-0492
- Jemni , M. A. , Kantchev , G. and Abid , M.S. Intake manifold design effect on air fuel mixing and flow for an LPG heavy duty engine International journal of energy and environment 3 1 2012 61 72
- Sulaiman , S.A. , Murad , S.H.M , Ibrahim , I. and Abdul , K. Z.A. Study of flow in air-intake system for a single cylinder GO-KART engine International Journal of Automotive and Mechanical Engineering 1 91 104 January June 2010
- Pesic , R.B. , Davinic , A.L. , Petkovic , S.D. , Taranovic , D.S. and Miloradovic , D.M. Aspects of volumetric efficiency measurement for reciprocating engines Thermal science 17 1 35 48
- AVL BOOST Version 2011.2 theory manual
- White , F.,M. Fundamentals of Fluid Mechanics 7 th McGraw-Hill Publications 2003
- Wilcox , D.,C. Turbulence Modeling for CFD 3 rd DCW Industries 2006