Hydraulic Oil Tank Layout for Coarse Foreign Object Recognition
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Solution Overview
Problem
Existing foreign object recognition systems for hydraulic systems in work vehicles are unable to accurately recognize coarse foreign objects that have been separated out by a strainer, as these objects are often adhered to the strainer or difficult to detect.
Innovation Solution
A foreign object recognition system is designed with a housing containing a tank with a strainer and a partition wall, where the recognition device captures images of foreign objects located downward of the partition wall, facilitating the detection of coarse foreign objects that have been separated by the strainer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a strainer is used to separate foreign objects from oil, then fine foreign objects can be recognized, but coarse foreign objects adhered to the strainer cannot be detected
Solution Approach 1:
The tank is divided into an upper space and a lower space by a partition wall. The strainer is disposed in the upper space, while the recognition device is positioned in the lower space to detect foreign objects that have passed through the strainer, thereby segmenting the detection function between fine objects (by strainer) and coarse objects (by recognition device in lower space).
Solution Approach 2:
The partition wall acts as an intermediary structure that allows oil to flow from the upper space to the lower space while enabling the recognition device to capture images of foreign objects in the lower space without being blocked by the strainer in the upper space.
2Measurement precision
If the recognition device is positioned to observe the strainer, then fine foreign objects can be detected, but coarse foreign objects adhered to the strainer remain undetected
Solution Approach 1:
Instead of positioning the recognition device to observe the strainer from above (vertical dimension), the device is positioned in the lower space to observe foreign objects from below, changing the observation dimension and enabling detection of coarse objects that have passed through the strainer.
3Measurement precision
If the partition wall extends completely to separate the tank, then foreign objects are concentrated for detection, but oil flow is blocked
Solution Approach 1:
The partition wall is designed with local quality variation: it has a first portion and a second portion with different heights, creating localized separation zones that concentrate foreign objects while maintaining adequate oil flow paths through the strategically positioned opening.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables quick and accurate recognition of coarse foreign objects, allowing for timely determination of abnormal water content in the oil, which can prevent damage to transmission components.
Implementation Method 1
a strainer configured to separate out foreign objects contained in oil flowing from the second space into the oil supply channel
Implementation Method 2
a partition wall disposed between the first space and the second space and extending downward from above
Data Source
AI summary
A foreign object recognition system includes a housing including a tank configured to store oil, an oil supply channel attached to the housing, and a foreign object recognition device. The tank includes a first space, a second space communicating with the first space, a strainer to separate out foreign objects contained in oil flowing from the second space into the oil supply channel, and a partition wall disposed between the first space and the second space and extending downward from above. The foreign object recognition device recognizes a foreign object located downward of the partition wall.