Influence of honing angle on tribological behaviour of cylinder liner–piston ring pair: Experimental investigation

Research conducted on the influence of honing angle on the cylinder liner surface lacks consensus on the numerical value of the honing angle for the desired performance of the liner-ring tribosystem. The paper presents the results of experimental work performed on the cylinder liner samples honed at different angles (20° −100°) to explore the influence of honing angles under boundary lubrication conditions. Experiments conducted at two distinct sliding conditions (0.2 m/s and 0.3 m/s) using a linear reciprocating tribometer indicated 40° as the optimum honing angle based on the evaluation of tribological characteristics such as the coefficient of friction and the wear. [Display omitted] •Study on the cylinder liner samples with different honing angles (20° −100°) under boundary lubrication conditions.•Total of 28 experiments were conducted for 0.2 m/s and 0.3 m/s sliding velocities.•The lowest COF value was obtained for a honing angle of 40°, while 80° showed the highest value.•40° specimens showed lowest minimum deviation of Sz value at 0.2 m/s and at 0.3 m/s it was shown by 100°.•Experimental results indicated 40° as the optimum honing angle based on the evaluation of friction and the wear attributes.