Method for counting cycle life of turbocharger carrying temperature information

By collecting speed-temperature data in the turbocharger and combining the stage counting method and stress-life relationship diagram, the problems of insufficient accuracy and slow calculation of turbocharger cycle life monitoring in the prior art are solved, and more accurate damage judgment and longer service time are achieved.

CN119714904APending Publication Date: 2025-03-28NINGBO WEIFU TIANLI TURBOCHARGING TECH
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Patent Information

Application Number
CN202411827710.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

When monitoring the cycle life of the turbocharger, the data volume is large and the calculation is slow, and the influence of temperature is not considered, resulting in insufficient accuracy in judging the remaining damage of the two wheels.

Method used

By setting the speed detection device and temperature sensor in the turbocharger, speed-temperature data at multiple time points are collected, and damage is calculated and temperature information is carried for counting using the stage counting method and stress-life relationship diagram.

Benefits of technology

A more accurate judgment of the remaining damage of the turbocharger two-wheeled wheels is achieved, maximizing the service time of the two-wheeled wheels, avoiding the risky and conservativeness of damage judgment under a single temperature condition.

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Abstract

A method for counting the cycle life of a turbocharger carrying temperature information comprises the following steps that S10, rotating speed-temperature data of an impeller at multiple time points are collected through a rotating speed detection device and a temperature sensor which are arranged in the turbocharger; s20, after receiving the rotating speed-temperature data, the vehicle-mounted processing center matches the rotating speed-temperature data with stress-rotating speed corresponding relation data preset in the system to obtain stress series-temperature data; s30, the frequency f (Si, TTj) is recorded through a level crossing counting method, and the frequency f (Si, TTj) means that under the condition that the temperature data is TTj, the frequency f (Si, TTj) is increased once for each positive slope frequency f (Si, TTj) exceeding the numerical value with the stress level being Si; s40, respectively reading a life number L (Si, TTj) corresponding to each frequency state from a stress-life relational graph preset in the system, and calculating a damage sum D; and S50, when the residual damage is smaller than a set threshold value, reminding is carried out.
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