Engine belt transmission wheel series

Abstract

The invention discloses a belt drive wheel system for engine accessory in BSG system, which comprises a belt, a crankshaft pulley, a starting / generator and a tension pulley. The invention is characterized in that: a tension pulley is also provided; two tension pulleys are positioned at two ends of the starting / generator in dissymmetry. The tension pulley is configured as a mechanical tension pulley. Because the drive wheel system adopts the special layout of two mechanical tension pulleys in dissymmetry, the invention does not only realize the possibility of driving big power motor but also reduce the tension and vibration in the system. Therefore, with feasible tension of belt, reliable working, long service life and low cost, this invention can be best applied for the belt drive wheel system for engine accessory in BSG system.

Description

technical field [0001] The invention relates to a wheel train structure of double tension pulleys, in particular to an engine accessory belt drive wheel train in an automobile engine BSG system. Background technique [0002] As the country has higher and higher requirements for the fuel consumption limit of passenger cars, and the formation of mandatory national standards to promote, each OEM is optimizing and improving the engine system to reduce fuel consumption, one of which is driven by a belt The starter and generator integrated drive system (BSG system) has started mass production at home and abroad. The integrated starter / generator generally has a large power and a large moment of inertia. At present, the commonly used BSG drive system is a wheel train structure of a mechanical tensioner or a hydraulic tensioner. The gear train structure of the double tensioner is not involved. The tensioning of the traditional wheel train structure adopts the design principle of u...

AI Technical Summary

Problems solved by technology

The tensioning of the traditional wheel train structure adopts the design principle of unilateral tensioning on the slack belt, and the drive system uses a traditional mechanical tensioner or hydraulic tensioner, which will not only cause excessive tension on one side of the system belt, but also cause the motor itself to There is a lot of inertia, as the engine operating conditions change, it will cause the belt tension to fluctuate and cause vibration, and the vibration is also large, reducing the reliability and life of the belt and pulley bearings

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