Intake Scoop Negative Pressure Cooling Airflow
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Solution Overview
Problem
In motor vehicle cooling arrangements, particularly for agricultural tractors, increased cooling air volume flow through the engine heat exchanger leads to elevated pressure in the engine compartment, causing back pressure in the intercooler and reducing its cooling efficiency, necessitating a powerful electric fan that occupies valuable space.
Innovation Solution
The cooling arrangement incorporates an air conveying device that generates a secondary cooling air volume flow through the intercooler via a negative pressure in the intake scoop, allowing for a single air conveying device to cool both the engine heat exchanger and charge air cooler, with an optional additional electrically operated axial flow fan for enhanced cooling, and a thermoplastic connection piece for efficient installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a distributed cooling system with separate electric fan for intercooler is used, then the intercooler cooling is maintained, but the space requirement increases and powerful electric drives are needed
Solution Approach 1:
The patent combines the cooling functions for both the engine heat exchanger and intercooler into a single cooling air volume flow path. The air conveying device generates one cooling air volume flow that serves both cooling components, eliminating the need for separate electric fans and reducing space requirements in the engine compartment.
Solution Approach 2:
The single air conveying device performs multiple functions by generating a cooling air volume flow that simultaneously cools both the engine heat exchanger and the intercooler. This multi-functional approach replaces the need for separate cooling systems and reduces the overall space requirement.
2Productivity
If cooling air volume flow is increased for engine heat exchanger, then engine cooling is improved, but back pressure in intercooler increases reducing its cooling efficiency
Solution Approach 1:
The cooling air volume flow is segmented into different paths using the intake scoop with multiple openings. The scoop directs portions of the cooling air to different destinations (engine heat exchanger and intercooler) based on the negative pressure distribution, allowing independent optimization of each cooling path.
Solution Approach 2:
The intake scoop acts as an intermediary device that distributes the cooling air volume flow to different cooling components. It uses the negative pressure field generated by the air conveying device to automatically route air to where it is most needed, balancing the cooling requirements of both the engine heat exchanger and intercooler.
3Area of stationary object
If a single air conveying device is used for both engine heat exchanger and intercooler, then space is saved, but the device must handle increased cooling demands
Solution Approach 1:
The system dynamically adjusts the distribution of cooling air to different components based on their instantaneous cooling demands. The intake scoop and connection pieces automatically route cooling air to the engine heat exchanger or intercooler depending on the negative pressure conditions, allowing the single air conveying device to efficiently meet varying cooling loads without requiring excessive power.
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
This configuration prevents impairment of the intercooler cooling, allows for space-saving installation of the charge air cooler, and enables efficient electronic temperature control with a low-power electric drive, optimizing space usage and cooling performance.
Implementation Method 1
a secondary cooling air volume flow passing through the intercooler can be caused due to a negative pressure that can be generated in the intake scoop by means of the air conveying device
Data Source
Figure 1
AI summary
Cooling arrangement (10) for a motor vehicle, in particular for an agricultural tractor, with an air conveying device (12) for generating a cooling air volume flow (14) and an air-cooled engine heat exchanger (18) connected upstream of the air conveying device (12) on the intake side by means of an intake scoop (16), wherein an air-cooled charge air cooler (24) is connected to the intake scoop (16) in such a way that, due to a negative pressure (Δp) generated in the intake scoop (16) by means of the air conveying device (12), a secondary cooling air volume flow (26) passing through the charge air cooler (24) can be generated.