Low cost and solid lubricant containing plasma spray coated cylinder liners have been investigated for their frictional performance under simulated engine conditions. A bench testing system which has high stroke and large contact width has been used to obtain friction data for plasma spray coated cylinder liners. Results are compared with conventional cast-iron samples. Experimental data has been developed as friction coefficient / crank angle degree diagrams. The effects of speed and temperature have been investigated. Plasma spray coated cylinder liners showed lower friction and higher tendency to develop hydrodynamic lubrication compared to conventional cast-iron bores.
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