Compressed Air Processing System Regeneration Sequence Valve Timing

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Solution Overview

Problem

The existing compressed air processing systems for commercial vehicles face inefficiencies in regeneration due to high-pressure air remaining in the supply line, reduced valve performance over time, and increased energy consumption, which affects the durability and efficiency of the pneumatic systems.

Innovation Solution

A compressed air processing system with a regeneration sequence valve and an unloader valve, where the unloader valve is opened before the regeneration line, delaying the opening of the regeneration line until a preset pressure is reached, and allowing air to be discharged to both the unloader valve and the separator-cooler, optimizing regeneration efficiency and minimizing energy loss.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the regeneration line is opened immediately during regeneration process, then the regeneration speed is improved, but high-pressure air remaining in the supply line causes reduced regeneration efficiency and energy loss

Engineering Contradiction:
Improveregeneration speedVSAvoidenergy loss during regeneration
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The unloader valve is opened in advance before the regeneration line is opened, to discharge high-pressure air from the supply line beforehand. This preliminary action removes the harmful high-pressure air that would otherwise reduce regeneration efficiency and cause energy loss when the regeneration line is opened.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the regeneration line is opened early, then the regeneration process is accelerated, but shock and overpressure occur on the unloader valve reducing its durability

Engineering Contradiction:
Improveregeneration process speedVSAvoidunloader valve durability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The unloader valve is activated in advance to discharge high-pressure air before the regeneration line opens. This preliminary discharge prevents shock and overpressure from occurring on the unloader valve during subsequent regeneration operations, thereby improving valve durability.

Inventive Principle:
Principle #10Preliminary action

3Use of energy by moving object

If electronic control valves are used to optimize regeneration timing, then energy efficiency is improved, but valve switching timing changes due to aging affect regeneration performance

Engineering Contradiction:
Improvecompressor energy efficiencyVSAvoidvalve switching timing stability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The system monitors and adjusts the switching timing parameters of electronic control valves based on their actual performance characteristics. When valve switching timing changes due to aging, the control system compensates by adjusting the timing parameters to maintain optimal regeneration performance and energy efficiency.

Inventive Principle:
Principle #35Parameter changes

4Device complexity

If the regeneration line opens at normal pressure, then the system operation is simple, but high-pressure air in the supply line reduces compression efficiency

Engineering Contradiction:
Improvesystem operation complexityVSAvoidcompression efficiency
Core Design Contradiction:
Device complexityVSLoss of energy

Solution Approach 1:

The unloader valve performs a preliminary discharge of high-pressure air from the supply line before the regeneration line is opened. This simple preliminary action removes the harmful high-pressure air that would reduce compression efficiency, without requiring complex system modifications.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11479227B2Compressed air processing system for commercial vehicle
Publication Date: 2022.10.25 SEMYUNGTECH CO LTD
  • US11479227B2 patent drawing
  • US11479227B2 patent drawing

AI summary

The present disclosure provides a compressed air processing system of which the operation of supplying compressed air and the regeneration operation can be efficiently controlled by an electronic control unit. In particular, the present disclosure is characterized in that the pressure of a regeneration sequence valve installed in a regeneration line is increased over a set pressure by controlling a valve, which is electronically controlled, to switch, so the opening time of the regeneration line is delayed in comparison to the opening time of an unloader valve, whereby regeneration efficiency is improved.