Method for characterizing coating properties of axle of engine piston of vehicle, involves rotating piston axle previously introduced into small end of connecting rod and measuring resistive torque exerted on axle by torque meter

摘要

The method involves rotating an axle (16) of a piston previously introduced into a small end (10) of a connecting rod by a motor (38), where the small end is outside the motor. Resistive torque exerted on the axle is measured by a torque meter placed in a line of a shaft of the motor, where the motor is connected to a shaft. Wear is listed by measuring wear grooves on the axle and/or by estimating used volume of the axle. Load is applied on a location of the small end by a cylinder (22), where the small end is subjected to maximal stress exerted by an engine of a vehicle during operation. An independent claim is also included for a test bench for characterizing tribological properties of an axle of a piston for an engine of a vehicle.