Al-Qadisiyah Journal for Engineering Sciences

The combustion characteristics of compression ignition engine fuelled partially by LPG-Diesel blends (Simulation study)

Document Type : Research Paper

Authors

Maysaa J. Mohsen 1
Mohamed F. Al-Dawody 2

1 Department of Mechanical Engineering, Collage of Engineering, University of Al-Qadisiyah, Ad-Diwaniyah, Iraq.

2 Department of Mechanical Eng. University of Al-Qadissiyah

https://doi.org/10.30772/qjes.v15i3.828
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
Al-Qadisiyah Journal for Engineering Sciences
Volume 15, Issue 3
Summer 2022
Pages 156-163

  • Receive Date 25 May 2022
  • Revise Date 08 July 2022
  • Accept Date 10 September 2022

Submit Manuscript

Guide for Authors

Article Processing Charges (APC)

Reviewers

Call for Reviewers

Contact Us