Effect of Ceramic Piston Coating on Engine Performance

Abstract

The article studies the effect of a ceramic coating formed on the piston crown using micro-arc oxidation on the performance of an internal combustion engine. Tests were conducted on a four-stroke UMZ-341 engine, using a specially designed and manufactured rig, in six operating modes that varied in load generator power and engine crankshaft speed. Tests were conducted first with a standard piston, and then with a piston with a ceramic coating on the crown. The experiment demonstrated that the coating improves engine performance, namely, reduces fuel consumption and, accordingly, increases its efficiency. This effect is observed at high speeds. The greatest increase in efficiency was observed at the 3200 min^-1 and 500 W engine operating mode and amounted to 9 %. The greatest reduction in fuel consumption was also noted in this mode, amounting to 0.117 kg/h. A decrease in exhaust gas temperature was simultaneously observed. This effect is believed to be related to the coating's catalytic effect on engine operation

The work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the State Assignment (no. FRRR-2026-0006)

Please cite this article in English as:

Sitdikov V.M., Dudareva N.Yu. Effect of ceramic piston coating on engine performance. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2026, no. 3 (158), pp. 143--159 (in Russ.). EDN: JNGDCE

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