Evaluation of the Economic benefits of Syrian mineral oil used in Bi-fuel engines (Gasoline - Syrian compressed natural gas)

Authors

  • Mhd Maher Kallas Automobiles & Heavy Machines engineering Department-Faculty of Mechanical and Electrical Engineering - Damascus University- Syria
  • Thaer Sallam Higher instiute for applied science and technology- Damascus- Syria.
  • Younes Saoud Research Director at the Center for Scientific Studies and Research - Doctor, Lecturer at the Higher Institute of Applied Sciences and Technology.

Keywords:

Compressed natural gas (CNG), mineral engine oil, used oil analysis (UOA), oil drain intervals (ODI), internal combustion engine (ICE), Economic and environmental benefits

Abstract

This research includes laboratory tests and field trials to determine oil drain intervals (ODI) for Syrian mineral oil API SAE 40/ CF used in gasoline

engine when operated on Syrian compressed natural gas (CNG).

Several used oil samples have been taken from three Bi-fuel vehicles operating at a petroleum field. Each sample was analyzed to monitor change in the physical and chemical properties of the oils, additive depletion and accumulation of contaminants. Used oil analysis (UOA): Kinematic viscosity, total acid number (TAN), total base number (TBN), flash point, antioxidant and anti-wear additives were performed in tribology laboratory.

UOA results were used to determine IP for gasoline engine operated on CNG. ODI of (18000 km) were obtained in comparison with original intervals (7500 km) recommended when oil used in gasoline engines. ODI is extended more than two times. These results will affect economy and environment positively. It reduces the cost of engine oil drain, quantities of new oils and used oils wastes by nearly two times.

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Author Biographies

  • Mhd Maher Kallas, Automobiles & Heavy Machines engineering Department-Faculty of Mechanical and Electrical Engineering - Damascus University- Syria

    Automobiles & Heavy Machines engineering Department-Faculty of Mechanical and Electrical Engineering - Damascus University- Syria

      

  • Thaer Sallam, Higher instiute for applied science and technology- Damascus- Syria.

    Higher instiute for applied science and technology- Damascus- Syria.

  • Younes Saoud, Research Director at the Center for Scientific Studies and Research - Doctor, Lecturer at the Higher Institute of Applied Sciences and Technology.

    Research Director at the Center for Scientific Studies and Research - Doctor, Lecturer at the Higher Institute of Applied Sciences and Technology. 

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Published

2025-03-23

Issue

Vol. 35 No. 1 (2019): Damascus University Journal for engineering sciences

Section

المقالات

How to Cite

Evaluation of the Economic benefits of Syrian mineral oil used in Bi-fuel engines (Gasoline - Syrian compressed natural gas). (2025). Damascus University Journal for Engineering Sciences, 35(1). https://journal.damascusuniversity.edu.sy/index.php/engj/article/view/15931