Automated Pneumatic Dust Discharge Valve for Commercial Vehicle Air Intake
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Solution Overview
Problem
Manual actuation of dust discharge valves in engine air intake systems of commercial vehicles is often neglected, leading to ineffective dust separation and reduced filter service life due to dust and water accumulation, which causes the valves to stick and become deactivated.
Innovation Solution
An automated dust discharge valve with a controllable blow-out device that uses pneumatic pressure from a vehicle's pressure accumulator to open and clear the valve at defined intervals, eliminating the need for manual operation and ensuring consistent dust separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual actuation of the dust discharge valve is required, then the valve can be opened to discharge dust, but the valve becomes neglected and stuck due to lack of regular operation
Solution Approach 1:
The system uses the vehicle's existing pneumatic parking brake system to automatically discharge dust from the air filter. When the parking brake is activated, compressed air is directed through a blow-out device to open the dust discharge valve and clear accumulated dust, eliminating the need for manual intervention and ensuring regular maintenance without additional operational burden on the driver
Solution Approach 2:
The pneumatic system serves dual purposes: it provides the braking function and simultaneously performs dust discharge maintenance. The same compressed air source and control mechanism used for the parking brake are leveraged to operate the dust discharge valve, combining two functions into one system
2Ease of operation
If the dust discharge valve is not opened regularly, then manual operation is avoided, but dust and water accumulate causing the valve to stick and deactivate
Solution Approach 1:
The blow-out device is positioned to direct compressed air onto the closing element of the dust discharge valve before dust accumulation can cause sticking. The preliminary application of air pressure prevents the valve from becoming stuck by clearing dust and water buildup that would otherwise impede valve movement
Solution Approach 2:
Compressed air from the vehicle's pneumatic system is used to actuate the dust discharge valve. The pneumatic pressure opens the valve and creates a blow-out effect that clears accumulated dust and water from the air filter, replacing manual mechanical operation with automated pneumatic control
3Extent of automation
If a complex automated system is implemented, then manual operation is eliminated, but the device complexity and cost increase
Solution Approach 1:
The dust discharge system is merged with the existing pneumatic parking brake system. The same compressed air source, control valve, and routing infrastructure are used for both braking and dust discharge functions, eliminating the need for separate automation components and reducing overall system complexity
Solution Approach 2:
The system leverages the vehicle's existing pneumatic infrastructure to automatically perform dust discharge without requiring additional automated control systems. The parking brake activation itself triggers the dust discharge sequence, using the vehicle's own systems to maintain the air filter
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 automated system ensures continuous and effective dust separation without manual intervention, preventing valve sticking and extending the service life of dust filters by ensuring regular clearing of accumulated dust and water.
Implementation Method 1
The dust discharge valve is also equipped with a controllable blow-out device directed towards the outlet opening as an opening and/or blow-out device, with the blow-out pressure of which the closing element can be opened and dust that has collected in the dust collection area can be blown out
Implementation Method 2
The dust discharge valve also has a closing element, which is arranged on the outlet opening so that it can be opened in the outlet direction and keeps it closed by a closing force during engine operation
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a device for dust separation in the raw air section of an engine air intake of a vehicle, in particular a commercial vehicle, wherein the device has a dust discharge valve (2) on the outlet side. According to the invention, the dust discharge valve (2) has an outlet opening (16) and the dust separated during operation accumulates at least partially directly in a dust collection area (18) in front of the outlet opening (16). Furthermore, the dust discharge valve (2) has a closing element (22) which is arranged at the outlet opening (16) so as to open outwards in the outlet direction and which is closed by a closing force during engine operation. The dust discharge valve (2) is controlled and/or automatically opened and/or cleared by means of an opening and/or blow-out device.Particularly preferably, the dust discharge valve (2) has an internal blow-out device (24, 25) directed towards the outlet opening (16), with the blow-out pressure of which the closing element (22) can be opened and dust accumulated in the dust collection area (18) can be blown out of the dust discharge valve (2) at suitable intervals.