A Large Damping Floating Thrust Bearing Against High Pulsation

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 large-damping floating thrust bearing used for turbochargers that resists high pulsation. Background technique [0002] The high-temperature exhaust gas from the engine enters the turbocharger, which pushes the turbine to do work, so that the coaxially connected compressor works, and provides the engine with more high-pressure, high-density fresh air, thereby increasing engine power, torque, and reducing emissions. With the development and progress of society, the requirements for energy saving and emission reduction have become stricter. Turbocharged engines have been widely used in automobiles, ships, aviation and other fields. Among them, the exhaust gas of single-cylinder and two-cylinder engines has high pulsation characteristics, which makes the turbine The supercharger rotor is impacted by a strong axial pulsating load in one cycle, which causes its reliability and service life...

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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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