Are the internal diesel injector deposits (IDID) linked to biofuel chemical composition or engine operation condition? 2019-01-0061
The increased use of alternative fuels has been linked to deterioration in performance of injectors and engines as a result of internal diesel injector deposits (IDID). In the present paper, the biofuel chemical composition impact over engine tendency to blockage was studied based on three main axis: (1) deposits linked to paraffins and aromatics biofuels content; (2) deposits of FAME (fatty acid methyl esters) and HVO (hydrotreated vegetal oil); and (3) deposits linked to the presence of additives (DDSA, DDSI). Deposits were formed in laboratory using a microcoking device over a stainless steel surface as well as an injector bench after low, intermediate and high load. The soaking time of fuel remaining in the injector after engine operation was also accessed. The correlation of morphology and chemical composition with injector’s tendency to blockage is discussed.
Maira Alves Fortunato, Francis Lenglet, Arij Ben Amara, Laurie Starck
IFP Energies Nouvelles, Institute Carnot
International Powertrains, Fuels & Lubricants Meeting