High-pulse-resisting large damping floating-type thrust bearing

Abstract

The invention discloses a high-pulse-resisting large damping floating-type thrust bearing. As for a traditional turbocharger thrust bearing, the emphasis attention aspects are the bearing capacity of the turbocharger thrust bearing and compression end oil leakage improvement of a supercharger, and therefore the turbocharger thrust bearing cannot adapt to the engine waste gas load impact working condition under high pulses. Compared with the traditional thrust bearing, the floating-type thrust bearing can achieve double-side bearing, so that the floating-type thrust bearing has large combined damping energy; two floating-type thrust bearings serve as a set to be installed on a turbocharger, and when the directions of axial force are different, double-side bearing can be achieved correspondingly; and under the axial force high-pulse impact working condition, the bearing capacity is large, the damping vibration absorption effect is good, the high-pulse-resisting large damping floating-type thrust bearing is suitable for a high-pulse exhausting engine supercharging system to a great extent, the reliability is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of thrust bearings, in particular to a high-pulsation-resistant large-damping floating thrust bearing for a turbocharger. Background technique [0002] The high-temperature exhaust gas of the engine enters the turbocharger, pushes the turbine to do work, and makes the coaxially connected compressor work, providing more high-pressure, high-density fresh air to the engine, thereby increasing engine power, torque, and reducing emissions. With the development and progress of society, the requirements for energy saving and emission reduction are becoming more and more strict. Turbocharged engines have been widely used in automobiles, ships and aviation fields. The turbocharger rotor is impacted by a strong axial pulsating load in a cycle condition, which greatly reduces its reliability and service life. [0003] Traditional turbocharger thrust bearings, such as those disclosed in patents CN201010103835 and CN201310746039,...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned disclosed thrust bearings can effectively increase the bearing capacity of the thrust bearing and reduce the oil leakage at the pressure end to a certain extent, but none of them can well adapt to the impact condition of the exhaust gas load under high pulsation. Based on the above reasons, the present invention Provides a heavily damped floating thrust bearing capable of resisting high pulsations

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