scholarly journals An Eulerian CFD model and X-ray radiography for coupled nozzle flow and spray in internal combustion engines

2015 ◽  
Vol 70 ◽  
pp. 77-88 ◽  
Author(s):  
Q. Xue ◽  
M. Battistoni ◽  
C.F. Powell ◽  
D.E. Longman ◽  
S.P. Quan ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Nozzle Flow ◽  
Combustion Engines ◽  
Cfd Model ◽  
X Ray

scholarly journals Friction reducing performance of carbon nanotubes covered pistons in internal combustion engines – engine test results

2018 ◽  
Vol 172 (1) ◽  
pp. 14-24
Author(s):  
Jarosław KAŁUŻNY ◽  
Jerzy MERKISZ ◽  
Krzysztof KEMPA ◽  
Bartosz GAPIŃSKI ◽  
Emil WRÓBLEWSKI ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Multilayer Coatings ◽  
Scale Production ◽  
Combustion Engines ◽  
Test Results ◽  
Electro Deposition ◽  
X Ray ◽  
Industrial Scale Production

This article discusses the posibility of reducing friction losses in internal combustion engines by using carbon nanotubes, pointing out the large potential of this application. Experimental pistons were made of standard aluminum alloy and coated with a layer of nanotube deposits by spraying them with an aqueous solution containing the binder. The proposed technology of applying layers of nanotubes can be adopted in industrial-scale production. Engine tests were carried out showing a significant reduction of the engine motoring torque, up to 16% for the experimental pistons, thus confirming the favorable tribological properties of nanotubes observed in tribological research and reported by many authors. Supplementary tests were carried out: SEM, EDS, coordinate measuring technique, and x-ray tomography. An alternative technology for hierarchical nanotube multilayer coatings electro-deposition was proposed.

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