Browse > Article
http://dx.doi.org/10.17661/jkiiect.2018.11.5.579

A Study on the Effects of Fuel Rail Pressure and Engine Speed on Gas Fuel System  

Kwak, Youn-Ki (Department of Automobiles, Seoul Jungsu Campus of Korea Polytechnic)
Publication Information
The Journal of Korea Institute of Information, Electronics, and Communication Technology / v.11, no.5, 2018 , pp. 579-585 More about this Journal
Abstract
This study is to figure out the fuel injection characteristics according to the injection pressure and engine speed in the fuel supply system for gas fuel. The fuel rail pressure was from 1.5 to 6.0 bar by 1.5 bar increment and engine speed was set 1,000 ~ 6,000 RPM at interval of 1000 RPM. Considering the real engine operation, the injection pulse width was set 2.5ms, 5.0ms, and 13.0ms which correspond low, mid and high load condition respectively. In conclusion, in case of 100cc fuel rail, 4.5 bar of injection pressure showed best performance and the minimum required injection quantity 53cc which guarantees engine output can be obtained in each 1000~ 6000 rpm engine speed.
Keywords
Gas Injection; Injection Period; Rail pressure; Rail volume; Sequential Injection;
Citations & Related Records
연도 인용수 순위
  • Reference
1 C. H. Chang, K. Min, C. L. Myung and K. J. Yoon, "Development of Hyundai MPI CNG(Compressed Natural Gas) Engine," 1993 KSAE Fall Conference Proceedings, pp 546-554, 1993.
2 K. Min, C. L. Myung, C. H. Chang and K. J. Yoon, " Development of HMC's Natural Gas Vehicle," 1994 KSAE Fall Conference Proceedings, pp 187-193, 1994.
3 Gihun Lim, Sungwon Lee, Cheolwoong Park, Young Choi and Changgi Kim "A Study on the Characteristics of Power Output for Hydrogen-Natural Gas Blend Fueled Engine with Compression Ratio Change," 2012 KSAE Spring Conference Proceedings, pp 121-123, 2012
4 Hyung-Gu Kim, Inok Kim and Inyong Ohm, "Experimental Study on Natuaral Gas Conversion Vehicle(1) - Fuel Economy, Emission and Roadability," Transactions of KSAE Vol. 23, No. 4, pp.410-419, 2015   DOI
5 Hyung-Gu Kim, Inok Kim and Inyong Ohm, "Experimental Study on Natuaral Gas Conversion Vehicle(1) - Fuel Economy, Emission and Roadability," Transactions of KSAE Vol. 23, No. 4, pp.444-453, 2015   DOI
6 Ohm, I. Y.,"Internal Combustion Engine", A-jin, Seoul, pp50-57, 2006