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Method for analyzing front axle holding capacity of air suspension

An air suspension and analysis method technology, applied in the field of vehicle suspension, can solve problems such as cumbersome process, inability to lift the front axle, and low customer satisfaction, and achieve high customer satisfaction and avoid the effect of inability to lift the front axle

Pending Publication Date: 2021-03-12
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the cargo is gradually unloaded, the front axle cannot be lifted, so it is inconvenient for the user to move and carry the cargo
The usual practice is to change the facelift test according to the user's demand feedback, but the process is cumbersome, it is difficult to find the reason for the inability to lift and improve the ability to lift the front axle at one time, and the customer satisfaction is low

Method used

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  • Method for analyzing front axle holding capacity of air suspension
  • Method for analyzing front axle holding capacity of air suspension
  • Method for analyzing front axle holding capacity of air suspension

Examples

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Effect test

Embodiment 1

[0050] Taking a full-air suspension truck as an example, there is no failure under normal full-load conditions, but the front axle cannot be lifted during the unloading process. The method for analyzing the holding capacity of the air suspension front axle of the present invention is used for analysis, so as to find out the fundamental reason why the front axle cannot be lifted.

[0051] The first step is to collect the background information of the full air suspension truck, including air springs, pressure valves, load conditions, fault location and fault frequency;

[0052] The second step, such as figure 1 As shown, draw a logical block diagram of the system function according to the model;

[0053] The third step, such as figure 2 As shown, build a fault tree analysis FIA according to the problem phenomenon;

[0054] The fourth step, such as Figure 4 to Figure 5 As shown, collect relevant vehicle parameters from the planning department, including the total vehicle we...

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Abstract

The invention discloses a method for analyzing the front axle holding capacity of an air suspension, and belongs to the technical field of vehicle suspensions. The method for analyzing the retention capacity of the front axle of the air suspension comprises the following steps: collecting background information; drawing a system function block diagram; building a fault tree analysis FIA; checkingthe rationality of the specification of the air spring and the rationality of the change of the front axle load according to the whole vehicle parameters; dividing the whole vehicle into a plurality of equally divided boxes, drawing a curve graph of the placing number of the divided boxes and the change of the front axle load according to the principle of placing the boxes from inside to outside,and judging whether the front axle load exceeds the limit load of the air spring or not; and based on the fault tree analysis FIA, rechecking the design process factors to obtain the root cause that the front axle cannot be lifted. According to the analysis method, the reason why the front axle of the air suspension cannot be normally lifted can be effectively analyzed, and the phenomenon that thefront axle cannot be lifted is avoided in advance.

Description

technical field [0001] The invention relates to the technical field of vehicle suspension, in particular to an analysis method for the holding capacity of an air suspension front axle. Background technique [0002] The front axle is applied to the heavy-duty cargo vehicle with air suspension. When the front axle is fully loaded or over half loaded, the front axle is normally lifted, and the height of the vehicle body can be adjusted. However, when the cargo is gradually unloaded, the front axle cannot be lifted, so it is inconvenient for the user to move and carry the cargo. The usual practice is to change the refitting test according to the user's demand feedback, but the process is cumbersome, it is difficult to find the reason for the inability to lift and improve the ability to lift the front axle at one time, and the customer satisfaction is low. Contents of the invention [0003] The purpose of the present invention is to propose an analysis method for the holding c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/15G06K9/62
CPCG06F30/20G06F30/15G06F18/24323
Inventor 张建振常连霞闫波魏韬殷祥珍
Owner FAW JIEFANG AUTOMOTIVE CO
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