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http://dx.doi.org/10.7842/kigas.2019.23.6.90

Experimental Research on the Power Improvement by Increasing Intake pressure in a 1.4 L Turbocharged CNG Port Injection Spark Ignition Engine  

Lee, Jeong-Woo (Dept. of Engine Research, Korea Institute of Machinery and Materials)
Park, Cheol-Woong (Dept. of Engine Research, Korea Institute of Machinery and Materials)
Bae, Jong-Won (Dept. of Mechanical Engineering, Soongsil University)
Kim, Chang-Gi (Dept. of Engine Research, Korea Institute of Machinery and Materials)
Lee, Sun-Youp (Dept. of Engine Research, Korea Institute of Machinery and Materials)
Kim, Yong-Rae (Dept. of Engine Research, Korea Institute of Machinery and Materials)
Publication Information
Journal of the Korean Institute of Gas / v.23, no.6, 2019 , pp. 90-96 More about this Journal
Abstract
Natural gas has been regarded as one of major alternative fuels, because of the increment of mining shale gas and supplying PNG(Pipeline Natural Gas) from Russia. Thus, it needs to broaden the usage of natural gas as the increasing its supplement. In this situation, application of natural gas on the transport area is a good suggestion to reduce exhaust emissions such as CO2(carbon dioxides) and soot from vehicles. For this reason, natural gas can be applied to SI(spark ignition) engines due to its anti-knocking and low auto-ignitibility characteristics. Recently, since turbocharged SI engine has been widely used, it needs to apply natural gas on the turbocharged SI engine. However, there is a major challenge for using natural gas on turbocharged SI engine, because it is hard to make natural gas direct injection in the cylinder, while gasoline is possible. As a result, there is a loss of fresh air when natural gas is injected by MPI (multi-point injection) method under the same intake pressure with gasoline-fueled condition. It brings the power reduction. Therefore, in this research, intake pressure was increased by controling the turbocharger system under natural gas-fueled condition to improve power output. The goal of improved power is the same level with that of gasoline-fueled condition under the maximum torque condition of each engine speed. As a result, the maximum power levels, which are the same with those of gasoline-fueled conditions, with improved brake thermal efficiency could be achieved for each engine speed (from 2,000 to 6,000 rpm) by increasing intake pressure 5-27 % compared to those of gasoline-fueled conditions.
Keywords
CNG (Compressed Natural Gas); Intake pressure; MPI (Multi-point Injection); Power; SI (Spark Ignition); Turbocharger;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Yanuandri, P., Achmad, P., Arifin, N., Bambang, W. and Widodo, B., "Evaluation of performance and emission of SI engine fueled with CNG at low and high load condition", Energy Procedia 68, 147-156, (2015)   DOI
2 Jahirul, M., Masjuki, H., Saidur, R., Kalam, M., Jayed, M. and Wazed, M., "Comparative engine performance and emission analysis of CNG and gasoline in a retrofitted car engine", Applied thermal engineering 30, 2219-2226, (2010)   DOI
3 An, Y.Z., Teng, S.P., Pei, Y.Q., Qin, Z., Li, X. and Zhao, H., "An experimental study of polycyclic aromatic hydrocarbons and soot emissions from a GDI engine fueled with commercial gasoline", Fuel 164(15), 160-171, (2016)   DOI
4 Aslam, M., Masjuki, H., Kalam, M., Abdesselam, H., Mahlia, T. and Amalina, M., "An experimental investigation of CNG as an alternative fuel for a retrofitted gasoline vehicle", Fuel 85, 717-724, (2006)   DOI
5 Yoshiro, K., Touru, I. ,Masatake, K., Shouji, K. and Shunichi, K.,"Development of Toyota Electronically Controlled CNG Vehicles", Gaseous Fuel for Transportation, Canada, (1986)
6 Kichiro, K., Kohei, I., Michihiko, M., Katsuji, O., Akio, Y. and Keiso, T., "Development of Engine for Natural Gas Vehicle", SAE Technical paper 1999-01-0574, (1999)
7 Movahed, M., Tabrizi, H. and Mirsalim, M., "Experimental investigation of the concomitant injection of gasoline and CNG in a turbocharged spark ignition engine", Energy Conversion and Management 80, 126-136, (2014)   DOI
8 Bae, J., Park, C., Lee, J., Kim, Y., Kim, C., Lee, S., Lee, J., "Study on Full Load Operation Chacteristics and Thermal Efficiency of 1.4L Turbo CNG SI Engine", KIGAS 22(6), 34-39, (2018)
9 Heywood, J.B., Internal Combustion Engine Fundamentals, McGraw-Hill, New York, (1988)
10 Chala, G., Aziz, A., Hagos, F.," Combined effect of boost pressure and injection timing on the performance and combustion of CNG in a DI spark ignition engine", International Journal of Automotive Technology 18(1), 85-96, (2017)   DOI
11 Ronald, M. H. and Robert, J.F., "Automobile exhasut catalyst", Applied Catalyst A; General 221, 443-457, (2001)   DOI