Analysis and Improvement Optimization of Abnormal Sound of A Certain Car Alternator at Low Temperature
With the continuous innovation of the automobile industry,the application of new technology,the use of passenger car and the quality of the driving,the consumer began to improve the comfort of the passenger car and the o-verall NVH performance requirement.The generator is required to work with the engine at the same time,the generator's NVH directly affects the customer's experience,the generator as the power converter,the power converter,the mag-netic noise,the mechanical noise,the wind noise and so on,the parts that affect the noise of the generator noise are wide,the rotor,the stator,the end cover,the fan,the bearing,the electromagnetic parameters and so on.This paper analyzes the production mechanism and influence factors of generator noise problems in a new car type,and analyzes the influence of the generator bearing oil on noise by the evaluation of the NVH noise test and the subjective test drive in the process of the generator working process.Finally,the abnormal sound of the low temperature of the generator is solved by optimizing the size of the low temperature viscosity of the bearing grease.
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