Turbocharger integral type bearing with locating mechanism

Abstract

The invention discloses a turbocharger integral type bearing with a locating mechanism. The turbocharger integral type bearing with the locating mechanism comprises an integral type bearing body with an oil hole and the locating mechanism matched with the integral type bearing, wherein a shaft shoulder is arranged at the end, facing the locating mechanism, of the integral type bearing, and a notch is formed in the shaft shoulder; the locating mechanism comprises a locating pin matched with the notch, an anti-thrust press plate used for limiting the integral type bearing to move in the transverse direction and an oil sealing cover arranged outside the anti-thrust press plate. The turbocharger integral type bearing with the locating mechanism is simple in structure, the length of the rotor system is short, the mass is small, compared with a traditional turbocharger, the mechanism efficiency is improved by 3%-5% by average, and the low velocity section is improved by 8%-10%; the turbocharger integral type bearing with the locating mechanism is provided with an axial oil groove and capable of adjusting and balancing bearing oil feeding and returning flow, so that the stimulation of oil film whirl in the rotor system is restrained fundamentally, the vibration is controlled, the noise of the turbocharger is reduced, and the work stability is improved; meanwhile, the oil-bearing effect is achieved, under the condition of short oil insufficiency, the replenishing lubricating effect is achieved, it is guaranteed that the normal work state of the turbocharger is maintained, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the field of turbocharger accessories, in particular to an integral bearing with a positioning mechanism used in a turbocharger. Background technique [0002] Turbocharging is one of the most common supercharging systems in supercharged engines. Turbocharging is driven by exhaust gas. In the same unit of time, more air or a mixture of air and fuel can be forced into the cylinder for combustion. , so it can generate greater power output than a naturally aspirated engine under the same cylinder capacity. [0003] The supporting structure of the traditional turbocharger is generally a built-in floating bearing. The turbine and impeller cantilever are arranged outside the two floating bearings. end (compressor end), then the thrust bearing plate must have sufficient space for installation. For example, the Chinese invention patent application "Split Type Turbocharger Thrust Bearing" with the publication number CN103912577A disclo...

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Problems solved by technology

Although this method can provide reasonable lubrication for each bearing, there are certain problems in the processing, cleaning and quality control of the inclined hole of the bearing body.

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