This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Investigations on Combustion Process of Low-pressure CNG Compound Direct Injection Spark-ignited Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 28, 2010 by SAE International in United States
Annotation ability available
Natural gas is regarded as one of the most potential alternative fuels of engines because of its fruitful storage, good obtainable resources, and high octane value, etc. Compared with port fuel injection (PFI), Gasoline direct injection (GDI) has many advantages on volumetric efficiency improvement, lean-burning, emissions control, etc. A set of measuring and data acquisition system on CNG direct injection spark-ignited engines and the CNG multi-direct injection system are developed in this paper. Based on different injection modes of CNG single DI and compound DI (main injection and auxiliary-Injection), the investigations on combustion process of CNG DI engines has been conducted by the factors of in-cylinder mixture formation, air/fuel ratio, and injection timing, etc. Meanwhile, the three-dimension simulation on mixture formation and combustion principle of low-pressure CNG compound direct injection engines has also been researched. As conclusions, the conception of “Injection window” is issued in this paper, and the theoretic supports and technical measures will be obtained by the testing results and simulation analysis on controlling strategies of the low-pressure CNG direct injection engines.
|Technical Paper||Control System for Diesel - Compressed Natural Gas Engines|
|Technical Paper||Modeling of Hydrocarbons Formation and Emission in Gas Engines|
|Technical Paper||Use of CNG and Diesel in CI Engines in Dual Fuel Mode|
CitationHu, C. and Hou, S., "Investigations on Combustion Process of Low-pressure CNG Compound Direct Injection Spark-ignited Engines," SAE Technical Paper 2010-32-0052, 2010, https://doi.org/10.4271/2010-32-0052.
- Nichols, R. J. The Challenges of Change in the Auto Industry: Why Alternative Fuel [J] Alternative Fuels, Engine Performance, and Emissions 20 3 10 1993
- Dumitrescu, S. Hill, P.G. Li, G. Ouellette, P. “Effects of Injection Changes on Efficiency and Emissions of a Diesel Engine Fueled by Direct Injection of Natural Gas,” SAE Technical Paper 2000-01-1805 2000 10.4271/2000-01-1805
- Iyer, R.C. Vaggar, M. Seetharam, T.R. Channiwala, S.A. “Investigations on the Influence Of Ignition Voltage, Higher Compression Ratio and Piston Crown Geometry on the Performance of Compressed Natural Gas Engines,” SAE Technical Paper 2008-01-1762 2008 10.4271/2008-01-1762
- Jimei, Sun CNG and LPG automobile [M] Beijing institute of technology press 1999
- hui, Guo zhengdong, Zhang Meng, Li el. Design and Experiments of an In-Cylinder Direct-Injected CNG Engin [J] Vehicle Engine 5 8 2004
- Kalam, M.A. Masjuki, H.H. Mahlia, T.M.I. Fuad, M.A. et al. “Experimental Test of a New Compressed Natural Gas Engine with Direct Injection,” SAE Technical Paper 2009-01-1967 2009 10.4271/2009-01-1967
- Liangxin, Liu Zuohua, Huang Demeng, Jiang al. Combustion Characteristics of a Direct Injection Natural Gas Engine under Various Fuel Injection Timings [J] Transactions of CSICE 23 2005 5 469 474
- Heywood, J.B. Internal Combustion Engine Fundamentals [M] New York McGraw-Hill Inc. 1988
- Maji, S. Sharma, P.B. Babu, M.K.G. “A Comparative Study of Performance and Emission Characteristics of CNG and Gasoline on a Single-Cylinder S. I. Engine,” SAE Technical Paper 2004-28-0038 2004 10.4271/2004-28-0038