Adaptive Heat Transfer in Vehicle Drive Components
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Solution Overview
Problem
Conventional drive components lack the ability to adjust the heat transfer coefficient between power-transmitting elements and the housing, leading to inefficient heat dissipation at varying loads, resulting in high power losses and operation in non-ideal temperature ranges.
Innovation Solution
A drive component with an intermediate space between two walls, where a liquid can be introduced or removed to adjust the heat transfer coefficient, using a displacement element and actuating element that moves independently of the vehicle's energy sources to control the liquid's presence, allowing for adaptive heat transfer settings based on load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed heat transfer coefficient is used between walls, then the structure is simple, but heat dissipation efficiency is poor under varying load conditions
Solution Approach 1:
The patent applies the dynamics principle by making the heat transfer coefficient adjustable rather than fixed. A displacement element can move to change the volume of the intermediate space between the first and second walls, thereby dynamically adjusting the heat transfer coefficient based on operating conditions. This allows the system to adapt to varying load conditions, improving heat dissipation efficiency while maintaining reasonable structural simplicity.
Solution Approach 2:
The patent applies parameter changes by varying the volume of the intermediate space between walls through the displacement element. By changing this geometric parameter, the heat transfer coefficient is adjusted according to the load requirements. At high loads, the space is reduced to increase heat transfer; at low loads, the space is increased to reduce heat transfer, optimizing energy efficiency across different operating conditions.
2Temperature
If the heat transfer coefficient is increased for better cooling, then heat dissipation improves, but energy losses increase at low loads
Solution Approach 1:
The system dynamically adjusts the heat transfer coefficient based on load conditions. The displacement element responds to pressure differences caused by varying loads, automatically modifying the intermediate space volume. At low loads, the space increases to reduce heat transfer and minimize energy losses; at high loads, the space decreases to enhance cooling efficiency, thus resolving the contradiction between cooling needs and energy conservation.
Solution Approach 2:
The system uses the pressure differences generated by the drive component itself during operation to drive the displacement element. The pressure difference between the intermediate space and the external environment automatically moves the displacement element to adjust the heat transfer coefficient, eliminating the need for external control systems and enabling self-regulation based on actual operating conditions.
3Adaptability or versatility
If a displacement element is added to adjust heat transfer, then adaptability improves, but device complexity increases
Solution Approach 1:
The displacement element is actuated automatically by pressure differences that naturally occur during operation of the drive component. No external actuators, sensors, or control systems are needed - the system uses its own operational characteristics to drive the adjustment mechanism. This self-service approach provides adaptability while minimizing the addition of complex external components.
Solution Approach 2:
The displacement element acts as a simple intermediary mechanism that translates pressure differences into volume changes of the intermediate space. This single moving component provides the necessary adaptability without requiring complex control systems, multiple actuators, or sophisticated sensors, thus maintaining relatively simple device architecture while achieving heat transfer adjustability.
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 enables efficient energy dissipation at low loads and rapid heating at high loads, optimizing the lubricant's viscosity and temperature, thereby reducing energy losses and improving the efficiency of power-transmitting elements.
Implementation Method 1
To establish a heat transfer or heat transfer coefficient between the walls, a liquid can be introduced into and removed from the space between them. This establishes, for example, a first heat transfer coefficient in the space between the walls.
Implementation Method 2
If the fluid is drained from the space, so that, for example, no fluid is absorbed into the space, then the space is, for example, an air gap. This creates a second heat transfer coefficient in the space, and thus between the walls. This second heat transfer coefficient is, for example, lower than the first
Implementation Method 3
The components are, for example, power-transmitting elements, which may be movable relative to each other and/or relative to the housing. During operation of the drive component, the components are supplied with a lubricant, such as oil or lubricating oil, and thus lubricated and/or cooled to minimize wear.
Implementation Method 4
at least one displacement element which is at least partially movable into the reservoir to displace at least part of the liquid from the reservoir into the space between the walls
Data Source
Figure 1~2
AI summary
The invention relates to a drive component (10) for a motor vehicle, with at least one receiving space (12) for elements of the drive component (10), with at least one first wall (16) which delimits the receiving space (12) at least partially and by way of which at least one collecting region (20) for collecting a lubricant (22) for lubricating the elements is delimited at least partially, and with at least one second wall (26) which is arranged on a side (28) of the first wall (16) which faces away from the collecting region (20), which second wall (26) is spaced apart from the first wall (16) at least in a part region, with the result that an intermediate space (32) which is delimited at least partially by way of the walls (16, 26) is formed between the walls (16, 26), wherein a liquid (36) can be introduced into the intermediate space (32) and can be discharged from the intermediate space (32) in order to set a heat transfer coefficient between the walls (16, 26), with:- at least one reservoir (38) for receiving the liquid (36), which reservoir (38) is connected fluidically to the intermediate space (32); and - at least one displacement element (40) which can be moved at least partially into the reservoir (38), in order, as a result, to bring about a displacement of at least part of the liquid (36) out of the reservoir (38) into the intermediate space (32).