A Study of Abnormal Wear in Power Cylinder of Diesel Engine with EGR - Wear Mechanism of Soot Contaminated in Lubricating Oil

Effect of Exhaust Gas Recirculation (EGR) on performance, emissions, deposits and durability of a constant speed compression ignition engine

“…Wear of the materials also increase due to chemical reactions taking place on the surface (adsorption, corrosion) or due to abrasion of material or rupture of anti-wear film by soot. The application of EGR also adversely affects the lubricating oil quality and engine durability [28][29][30][31][32][33].…”

Durability and reliability in diesel engine system design

“…The researchers at the Musashi Institute of Technology conducted a series of experiments to try to understand the causes of the abnormal wear in diesel engines with EGR. They found that the acid components in the EGR gas may result in ring wear for the given fuel tested (Furuhama et al, 1991;Urabe et al, 1998;Ishiki et al, 2000).…”

“…They confirmed that the wear volume increased with the level of carbon black content in the oil due to metal sliding wear, soot particle abrasion, and starvation of lubricant from the contact. Ishiki et al (2000) conducted engine tests to find that the piston frictional force increased with higher EGR rate in the latter half of the compression stroke due to the soot deposited in the top ring groove, while the piston frictional force decreases in the middle of the stroke with higher EGR rate. They found that the piston ring wear essentially was a function of the soot loading in the oil and the soot loading in the combustion chamber rather than simply the EGR rate level.…”

Performance and NOx Investigation on Diesel Engine using Cold EGR Spiral Tube: A Review

“…In addition, it was confirmed in a cutting test that soot mixed lubricating oil improved in performance as cutting oil. Based on these results, it was proposed that the ring wear is accelerated at EGR because abrasive wear increases due to a lot of soot mixed into lubricating oil improving the performance of lubricating oil as cutting oil [12].…”