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Method for detecting roaring sound in pure electric van commercial vehicle

A detection method and roaring sound technology, which is applied in the field of detection of roaring sounds in pure electric vans, can solve problems such as inability to quickly find problem points, wrong judgments, and inability to give solutions, etc., and achieve the effect of rapid and effective investigation

Active Publication Date: 2019-03-26
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods in the prior art have high requirements on the experience of engineers, otherwise it may lead to failure to quickly find the problem point and take many detours; at the same time, it is easy to be misled when multiple components interact to generate roar. Wrong judgment, unable to give effective solutions

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  • Method for detecting roaring sound in pure electric van commercial vehicle
  • Method for detecting roaring sound in pure electric van commercial vehicle
  • Method for detecting roaring sound in pure electric van commercial vehicle

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Embodiment Construction

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0036] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0037] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a method for detecting a roaring sound in a pure electric van commercial vehicle. The method comprises a step of confirming a problem working condition and obtaining a vehiclespeed range and a motor rotating speed range when the roaring sound occurs in the vehicle, a step of collecting noise data in the vehicle under the problem working condition, a step of obtaining an order and a problem frequency of the roaring sound in the vehicle according to noise data in the vehicle, a step of selecting a vibration path and selecting vibration test points on a vibration transmission path, a step of testing each vibration test point under the problem condition and judging whether a component corresponding to each vibration test point is a high-correlation part, and a step ofobtaining a vibration source from the high-correlation part. According to the method, the vibration source of the roaring sound in the pure electric van commercial vehicle can be quickly and accurately detected.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a detection method for roaring sound inside a pure electric van commercial vehicle. Background technique [0002] At present, the rectification of the roaring sound in the car mainly relies on the experience of NVH engineers, and the exclusion test is carried out on the main components on the transmission path, such as reducing the amplitude or changing the mode state frequency. [0003] The methods in the prior art have high requirements on the experience of engineers, otherwise it may lead to failure to quickly find the problem point and take many detours; at the same time, it is easy to be misled when multiple components interact to generate roar. A wrong judgment cannot give an effective solution. [0004] How to quickly and accurately detect the roaring sound in the car is one of the important problems urgently needed in this field. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G01M17/007
CPCG01H17/00G01M17/007
Inventor 陈晓宇邓厚科董银萍宋文凤冯磊殷金祥
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD