Engine timing chain tension testing device and method

Abstract

The invention discloses an engine timing chain tension testing device and method. The test device comprises an engine which comprises a rack, a plurality of chain wheels and a timing chain, and also comprises a fixed rail and a movable rail which are fixed on the rack; a strain foil which is used for being attached to the timing chain; a dynamic strain gauge; a tension test board; a first force sensor which is mounted on one side, matched with the timing chain, of the movable rail, or mounted on one side, matched with a tensioner, of the movable rail; a second force sensor which is mounted onone side, matched with the timing chain, of the fixed rail; a data acquisition system which is electrically connected with the dynamic strain gauge, the first force sensor and the second force sensor;a data storage computer which is electrically connected with the data acquisition system; and an engine endurance test bench. The engine timing chain tension testing device can actually measure the stress condition of the second timing chain of the engine under different rotating speed working conditions and different load working conditions.

Description

technical field [0001] The invention relates to testing equipment, in particular to an engine timing chain tension testing device and method. Background technique [0002] For the engine trial development test, there is a single test for the timing chain, and a tensile strength test to evaluate its strength and fatigue limit. At present, the evaluation of the force of the engine timing chain mainly relies on the CAE calculation method to evaluate the force of the chain during the actual engine operation. Since the dynamic calculation model of the timing system is relatively complicated, it is directly related to the polygonal benefit of the actual operation of the timing chain. The model There are many simplifications, so its accuracy is greatly reduced, and it cannot reach the actual reference value. Contents of the invention [0003] Aiming at the above problems, the present invention proposes an engine timing chain tension testing device and method. [0004] The techn...

AI Technical Summary

Problems solved by technology

At present, the evaluation of the force of the engine timing chain mainly relies on the CAE calculation method to evaluate the force of the chain during the actual engine operation. Since the dynamic calculation model of the timing system is relatively complicated, it is directly related to the polygonal benefit of the actual operation of the timing chain. The model There are many simplifications, so its accuracy is greatly reduced, and it cannot reach the actual reference value

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