The combustion characteristics of compression ignition engine fuelled partially by LPG-Diesel blends (Simulation study) | ||
| Al-Qadisiyah Journal for Engineering Sciences | ||
| Volume 15, Issue 3, September 2022, Pages 156-163 PDF (584.19 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.30772/qjes.v15i3.828 | ||
| Authors | ||
| Maysaa J. Mohsen1; Mohamed F. Al-Dawody* 2 | ||
| 1Department of Mechanical Engineering, Collage of Engineering, University of Al-Qadisiyah, Ad-Diwaniyah, Iraq. | ||
| 2Department of Mechanical Eng. University of Al-Qadissiyah | ||
| Abstract | ||
| This paper proposes a numerical investigation of the behavior of the dual diesel-Liquefied Petroleum Gas (LPG) engine. Numerical analysis is performed with the aid of the simulation program Diesel-RK. Three volumetric LPG blends: 5 % LPG, 8 % LPG, and 10%LPG are inducted with air intake for a single cylinder,4-stroke, constant speed diesel engine with a fixed compression ratio of 15.5/1. No dramatic change in combustion pressure is seen for 5%,8%, and 10% LPG compared to the case of 0% LPG (diesel only). Diesel's maximum energy production is 32.53 (1/deg.) at 365 degrees BTDC, and this is lowered to 30.28 (1/deg.) at the same crank angle when using 10% LPG. Maximum temperature and pressure rise a little bit by 0.14 % and 0.41 % for 10 % LPG. Increasing the LPG injection rate reduces volumetric efficiency and mechanical efficiency slightly. The results found a slight increase in NOx and a considerable reduction is captured in Bosch smoke number (BSN) when LPG is used with diesel. The obtained is validated with the findings of other researchers. | ||
| Keywords | ||
| dual fuel LPG NOx emission Diesel; RK | ||
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