Tensioner of transmission system of engine and engine

Abstract

The invention discloses a tensioner of a transmission system of an engine and the engine. The tensioner of the transmission system of the engine comprises a base, a pivot, a swing arm and a damping assembly, wherein the lower end of the pivot is fixedly connected with the base; the swing arm is rotationally arranged on the pivot in a sleeving mode; an annular cavity is formed in the swing arm anddivides the lower section of the swing arm into an outer ring and an inner ring; at least part of the damping assembly sleeves the inner ring; and the damping assembly intervenes with the pivot in therotating process of the swing arm, the interference amount between the damping assembly and the pivot is gradually increased in the reverse rotation process of the swing arm, and is gradually decreased in the forward rotation process of the swing arm. In the tensioner, the damping assembly is arranged and can intervene with the pivot at different amounts in the different rotation states of the swing arm, specifically, when the swing arm rotates in the reverse direction, the intervene amount is gradually increased, and thus the swing arm is restrained from continuing rotating; otherwise, whenthe swing arm rotates forwards, the intervene amount is gradually decreased, and thus the swing arm can return rapidly and enough rotation response capacity is obtained.

Description

technical field [0001] The invention relates to the technical field of vehicle engines, in particular to the technical field of transmission equipment of vehicle engines, and in particular to an engine transmission system tensioner and a vehicle. Background technique [0002] Timing systems are generally provided in the internal combustion engine architecture of modern vehicles. The crankshaft in the timing system drives the camshaft to rotate, controls the opening and closing of the intake and exhaust valves, realizes the synergy between the crankshaft and the camshaft, cooperates with the intake and exhaust strokes to organize the entry and exit and exchange of working fluids, and provides a guarantee for the working cycle of the engine. Warranty and Conditions. According to the different connection methods, the timing system can be divided into three categories: chain system, toothed belt system and gear system. With the requirements of light weight and vibration and no...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to propose an engine drive system tensioner and an engine, aiming to solve the problems of low response ability of the traditional automatic tensioner to the forward rotation of the swing arm and poor reverse rotation suppression effect

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