Mechanical supercharger structure

Abstract

The invention provides a mechanical supercharger structure which is applied to the field of engines. In the structure, one end of an input shaft (2) is connected with a belt wheel (1), the other end of the input shaft (2) is connected with a driving shaft (9), a coupling (6) is arranged between the input shaft (2) and the driving shaft (9); the supercharger structure comprises a front cover plateoil seal (4), a driving rotor oil sea (10), a driven rotor oil seal (11); wherein the front cover plate oil seal (4) is arranged in a front cover plate (15) and is sheathed on the input shaft (2); the driving rotor oil sea (10) and driven rotor oil seal (11) are arranged on a bearing plate (14); the driving rotor oil sea (10) is sheathed on the the driving shaft (9), and the driven rotor oil seal(11) is sheathed on a driven shaft (12). The technical scheme of the invention ensures lubrication effect of the couplings, reduces vibration of the superchargers, and improves reliability and durability of the superchargers.

Description

technical field [0001] The invention relates to the field of automobile engines, more specifically, the invention relates to a structure of a supercharger. Background technique [0002] Engine supercharging technology can greatly increase the power and torque of the engine without increasing the cylinder volume, so it has been paid more and more attention. The supercharging technologies of automobile engines mainly include exhaust gas turbocharging and supercharging. Compared with exhaust gas turbocharging, superchargers have advantages such as good transient response characteristics, simple operation and maintenance, and long life, so they are gradually widely used in the engine industry. [0003] The Roots-type supercharger is a commonly used supercharger. It has a pair of rotors that mesh with each other. The pair of rotors are respectively fixed on a shaft. The two ends of the shaft are supported by bearings. The pair of rotor shafts are composed of A pair of intermesh...

AI Technical Summary

Problems solved by technology

In the traditional Roots-type supercharger, due to the poor sealing of the lubricating oil chamber, lubricating oil leakage often occurs, so that the bearings and gears are not fully lubricated, thus affecting the performance and durability of the supercharger

In addition, after the leaked lubricating oil enters the engine with the pressurized gas, it will affect the combustion performance of the engine, reduce the performance of the engine, and will also cause blue smoke from the engine exhaust.

Usually, in order to ensure that there is enough lubricating oil in the lubricating oil chamber, it is necessary to replenish the lubricating oil in time, which will lead to an increase in maintenance costs

[0004] Chinese Patent No. CN200420036260.6 discloses a patented technology for an internal combustion engine supercharger. A pair of timing gears and pulleys of the system are located at both ends of the supercharger, and the pulley transfers the torque from the drive shaft to It is transmitted to the driven shaft through the timing gear to drive the rotor of the supercharger to rotate, but the patent does not explain the problems of gear lubrication and oil seal; in addition, the torque transmitted by the drive shaft of the supercharger with this structure is relatively large, and the torque on the drive shaft is relatively large. The structural strength and the structural strength of the entire supercharger have put forward high requirements

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