Swinging Heat Transfer Units for Tiltable Cab Motor Vehicles
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Solution Overview
Problem
In motor vehicles with tiltable cab units, the long flexible hoses connecting the cab unit to the vehicle frame are prone to damage and occupy significant space, as they need to remain connected during tilting, which poses a challenge for effective heat transfer and cooling systems.
Innovation Solution
A motor vehicle design featuring a heat transfer arrangement with independent circulation circuits on the vehicle frame and in the cab unit, utilizing heat transfer units that maintain contact when the cab is lowered and separate when raised, eliminating the need for flexible hoses by allowing the heat transfer units to swing away from the frame during tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If long flexible hoses are used to connect the cab unit to the vehicle frame during tilting, then the cab unit can be tilted for servicing, but the hoses occupy large space and are prone to damage from wear and tear
Solution Approach 1:
The invention extracts the heat transfer function from the flexible hose connection and implements it through direct contact between heat transfer units on the cab unit and vehicle frame. This eliminates the need for long flexible hoses while maintaining cab tilting capability, as the heat transfer units swing away during tilting and reconnect when the cab is lowered.
Solution Approach 2:
The heat transfer units are designed to be dynamically adjustable - they maintain contact during normal operation for efficient heat transfer, and swing away during cab tilting to avoid damage. This dynamic adaptation allows the system to accommodate both operational states without requiring durable long hoses.
2Adaptability or versatility
If long flexible hoses are used to maintain connection during tilting, then the cab unit can be serviced, but the hoses require significant space
Solution Approach 1:
The invention removes the flexible hose component entirely from the heat transfer system. Instead, heat transfer units are mounted directly on the cab unit and vehicle frame, eliminating the space-consuming hoses while preserving cab tilting functionality through the swinging mechanism.
3Adaptability or versatility
If flexible hoses are used for heat transfer connection, then the cab unit can be tilted, but the hoses are susceptible to buckling during tilting
Solution Approach 1:
The heat transfer units are designed to dynamically swing away from each other during cab tilting, maintaining structural integrity. When the cab is lowered, the units return to contact for stable heat transfer. This dynamic movement prevents buckling and structural damage that would occur with fixed flexible hose connections.
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 solution reduces the risk of hose damage and optimizes space usage by maintaining heat transfer efficiency only when the cab unit is in the lowered state, ensuring reliable operation and reduced maintenance needs.
Implementation Method 1
a heat transfer arrangement (4) for transfer of heat between said media... These heat transfer units are arranged to be in heat-transferring contact with one another when the cab unit is in the lowered state
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
Motor vehicle comprising - a cab unit (3) tiltable relative to a vehicle frame (2) between a lowered state and a raised state, - a first circuit (10) situated on the vehicle frame for circulation of a first medium, - a second circuit (20) situated in the cab unit for circulation of a second medium, and - a heat transfer arrangement (4) for transfer of heat between said media. The heat transfer arrangement comprises a first heat transfer unit (11) fitted on the vehicle frame and incorporated in the first circuit in order to have the first medium flowing through it, and a second heat transfer unit (21) fitted on the cab unit and incorporated in the second circuit in order to have the second medium flowing through it. These heat transfer units (11, 21) are in heat-transferring contact with one another when the cab unit is in the lowered state and are separated from one another when the cab unit is in the raised state.