Critical relationship between biodiesel fuel properties and degradation of fuel delivery materials of a diesel engine. (September 2018)

• Record Type: Journal Article
• Authors: Chandran, Davannendran; Gan, Suyin; Lau, Harrison Lik Nang; Raviadaran, Revathi; Salim, Mohammed; Khalid, Mohammad
• Is Part Of: Thermal science and engineering progress. Volume 7(2018)
• Page Start: 20
• Page End: 26
• Publication Date: 2018-09
• Subjects: Al aluminium -- ASTM American Society for Testing and Materials -- CRDE common rail diesel engine -- Cu copper -- DO dissolved oxygen -- FDM fuel delivery materials -- FKM fluoroelastomer -- FTIR Fourier transform infrared spectroscopy -- GS galvanized steel -- h hour/hours -- l litre -- ml millilitre -- NBR nitrile rubber -- SAE Society of Automotive Engineers -- SEM scanning electron microscope -- SLTC speed-load test cycle -- SR silicone rubber -- SS stainless steel -- WHSC World Harmonized Stationary Cycle; Biodiesel -- Materials performance -- Degradation analysis; Heat engineering -- Periodicals; Heat engineering; Thermodynamics; Periodicals; 621.402
• DOI: 10.1016/j.tsep.2018.04.018
• Languages: English
• ISSNs: 2451-9049

Abstract

Highlights: Novel immersion creates laboratory condition mimics diesel engine operation. Copper and nitrile rubber have highest materials degradation rate. Trend of materials degradation under novel immersion matched typical immersion. Rate of materials degradation significantly lower under novel immersion. Abstract: This work aims to disseminate the critical relationship present between biodiesel fuel properties and the degradation of commonly present fuel delivery materials (FDM) of a diesel engine. This was achieved by quantifying the adverse effects of palm biodiesel fuel exposure towards aluminium, galvanized steel, stainless steel, fluoroelastomer, silicone rubber and nylon under novel immersion method. Under the novel immersion method which was designed to resemble the biodiesel fuel deterioration under diesel engine operation, fuel renewal was incorporated in the typical standard methods. The utilized fuel renewal durations were 108 h and 192 h for metal and elastomers, respectively. Through this, the resulting biodiesel fuel properties under diesel engine operation were primarily simulated under the immersion methods. The experimentations were carried out for 540 h and 960 h for metals and elastomers, respectively, at 100 °C. Based on the obtained results, as well as the comparisons made to an existing study, galvanized steel, aluminium and stainless steel had lower corrosion rate by 33%, 74% and 80%, respectively, as compared to copper. On the other hand, 26%, 78% and 106% lower volume changes were determined for silicone rubber, fluoroelastomer and nylon, respectively, as compared to nitrile rubber. Significantly lower degradation rate of up to 20 times for metals and 5 times for elastomers were critically obtained under novel immersion method as compared to under typical immersion methods from existing studies. This demonstrates that through the employment of novel immersion method which simulates biodiesel fuel properties as per under diesel engine operation, much better compatibility is deemed present between biodiesel fuel and FDM contrasting to the existing studies.