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Volume 08
Research & Reviews: Journal of Engineering and Technology
ISSN: 2319-9873
Automobile Europe 2019
July 08-09, 2019
Notes:
conference
series
.com
6
th
International Conference and Exhibition on
July 08-09, 2019 | Zurich, Switzerland
Automobile & Mechanical Engineering
Page 21
Hakan Kaleli, JET 2019, Volume 08
Nano tribology of nano particles added in engine oil and nano coatings of piston rings-cylinder
liners in internal combustion engines
T
his speech is related to our old and purely new scientific work carried out in our Automotive Lab. Real piston ring-
cylinder specimens were tested with reciprocating tribometer using five different nanoparticles added engine oil
to investigate their wear and friction behavior. With regard to the experiments, it has been found that the best results
were determined by TiO
2
and SWCNTs (SWCNTs) according to the BN (boron nitride), Multi-walled carbon nanotubes
(MWCNTs) and graphene nanoparticles added to the engine oil, respectively. At the end of the tests, abrasive wear has
been observed as the main wear mechanism. The tribological characteristics of piston ring against a cylinder liner in the
presence of graphene nano-additives mixed into 5W40 fully synthetic engine oil was also investigated. The tribometer
and engine test results showed that graphene nanoparticles are a potentially beneficial additive to engine lubricants.
ChromiumCarbon Nitride coating (CrCN) is deposited with (Physical Vapor Deposition) PVDmethod on cylinder liner.
Friction and wear test were conducted using a reciprocating tribometer. Although the CrCN coating eliminated the wear
of the coated liner, the restricted tribofilm formation and the high coating hardness led to more intense wear of the piston
ring and showed slightly higher friction value related non-coated liner. Diesel engine cylinder liner is also coated with
Graphene using Chemical Vapour Deposition (CVD) technique on the cylinder liner surface. Graphene coating showed
slightly lower friction value between ball and coated cylinder liner pairs related non-coated liner.
Biography
Hakan Kaleli has completed his PhD at Yıldız Technical University, Faculty of Mechanical Engineering, Automotive Division in İstanbul-Turkey in 1995. He is
teaching Internal Combustion Engines, Otto Engine Technology, Diesel Engine Technology, Tribology, Wear Lubrication, Oil Analysis and Cooling in Internal
Combustion Engines. He has published many papers in reputed journals and is still working on Automobile-Engine Nano/Tribology.
kaleli@yildiz.edu.trHakan Kaleli
Yıldız Technical University, Turkey