Bypass Line for Frozen Cooling Coil in Vehicle Pneumatic System
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Solution Overview
Problem
Pneumatic power brake systems in commercial vehicles face issues due to moisture condensation in compressed air, which freezes in cooling devices, leading to system blockage and reduced operational distance before needing auxiliary braking.
Innovation Solution
A line system with a bypass device that allows gas to bypass the cooling device when it is clogged or frozen, ensuring continuous gas flow to the gas dryer and maintaining brake functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cooling system is designed as coiled pipes for packaging and cost reasons, then manufacturing cost is reduced, but condensed water freezes in the coil causing blockage
Solution Approach 1:
The bypass device is pre-installed and positioned to automatically activate when freezing conditions occur. This preliminary preparation ensures that when condensation starts to freeze in the cooling coil, the bypass path is already in place to prevent complete blockage.
Solution Approach 2:
The bypass device serves as a protective measure prepared in advance against the harmful effect of freezing. It cushions the system against the consequences of ice formation by providing an alternative flow path before complete blockage occurs.
2Productivity
If the bypass line flow cross-section is smaller than the main flow channel, then gas flow through the bypass is minimized during normal operation, but sufficient gas flow is available when the cooling device is blocked
Solution Approach 1:
The bypass line is designed with a smaller cross-section that provides partial flow capacity during normal operation but is sufficient to handle the full gas flow requirement when the cooling device becomes blocked. This partial design approach optimizes both normal efficiency and emergency reliability.
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
Prevents system failure by ensuring uninterrupted gas supply to the power brake system, allowing the vehicle to be driven for a longer distance before needing auxiliary braking.
Implementation Method 1
a cooling device, in particular a cooling coil, for cooling the gas
Implementation Method 2
a gas dryer for drying the gas
Implementation Method 3
a gas compressor for conveying a gas... air as an energy carrier has the disadvantage of containing dissolved moisture. This moisture condenses when the air is compressed. The air heats up during compression
Implementation Method 4
a bypass device with a bypass line for the gas, via which the gas can be conveniently routed directly or indirectly to the gas dryer
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a piping system (1) for a motor vehicle, preferably a commercial vehicle. The piping system comprises a gas compressor (2) for conveying a gas, a gas dryer (3) for drying the gas, and a cooling device (4), in particular a cooling coil, for cooling the gas, which is arranged fluidically between the gas compressor (2) and the gas dryer (3). The piping system (1) is characterized in particular by a bypass device (B) with a bypass line (L) for the gas, through which the gas can be routed to the gas dryer (3) bypassing the cooling device (4).