Timing chain tensioning device, engine and automobile

Abstract

The invention relates to a timing chain tensioning device, an engine and an automobile to solve the problem that in the prior art, the abrasion elongation of the timing chain cannot be measured on thepremise of not dismounting the timing chain. According to the technical scheme, the timing chain tensioning device comprises the timing chain, a tensioning rail and a tensioner abutting against the tensioning rail, one side end face of the tensioning rail is provided with a guide rail, and the timing chain is installed in the guide rail; the other side end face, facing the tensioner, of the tensioning rail is provided with an installation groove, a sliding element which can slide is embedded into the installation groove, the sliding element is connected with the tensioner in an abutting manner, the end face, opposite to the groove wall of the installation groove, of the sliding element is provided with scale marks used for indicating the abrasion elongation of the timing chain; and an elastic element is arranged between the sliding element and the groove bottom of the installation groove, when the timing chain is abraded to extend, the elastic element pushes the sliding element to slide in the direction far away from the groove bottom of the installation groove, and scale mark part on the sliding element is exposed out of the installation groove.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to a timing chain tensioner, an engine and an automobile. Background technique [0002] The gas distribution mechanism of an automobile engine is an important part of ensuring the normal operation of the engine. Two transmission modes are commonly used in the gas distribution mechanism, specifically: timing belt transmission and timing chain transmission. Because the advantage of the timing chain compared with the timing belt is that it has high structural strength and can carry higher power and torque, it is widely used. As we all know, the arrangement of the timing chain system is divided into tight side and loose side. Guide rails are arranged on the tight side and tension rails are used on the loose side to realize the guiding and tensioning of the timing chain. [0003] In an ideal state, the timing chain is maintenance-free for life. However, as the natural environ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a timing chain tensioner, engine and automobile, to solve the problem in the prior art that the wear and elongation of the timing chain cannot be measured without dismantling the timing chain

Images