Coolant Supply Chamber Layout to Limit Heat Exchange
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Solution Overview
Problem
Conventional flow restrictor elements in automotive coolant systems fail to prevent heat exchange between separate coolant circuits, leading to temperature approximation and inefficient cooling.
Innovation Solution
A flow restrictor element with a separating wall and connection passage is used to connect coolant supply chambers, minimizing heat exchange by restricting coolant flow and maintaining individual temperature levels in each circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional flow restrictor elements are used to reduce volume flow, then coolant flow between circuits is restricted, but heat exchange between circuits cannot be prevented
Solution Approach 1:
The flow restrictor element is divided into a first portion and a second portion separated by a separating wall. This segmentation creates distinct flow paths for each coolant circuit while preventing direct thermal contact, thereby restricting coolant flow between circuits while minimizing heat exchange between them.
Solution Approach 2:
The separating wall acts as an intermediary structure between the two coolant circuits. It allows fluidic connection through the connection passage while simultaneously acting as a thermal barrier to prevent heat exchange between the hot and cold coolant circuits.
2Stress or pressure
If coolant circuits are fluidically connected for pressure equalization, then pressure balance is achieved, but temperature approximation occurs due to heat exchange
Solution Approach 1:
The flow restrictor element segments the connected coolant circuits into distinct thermal zones using the separating wall. This allows pressure equalization through the connection passage while maintaining separate temperature zones for the traction battery coolant and traction motor coolant circuits.
Solution Approach 2:
Different portions of the flow restrictor element have different functions: the connection passage allows fluid communication for pressure equalization, while the separating wall provides thermal isolation. This local differentiation of properties enables simultaneous pressure balance and temperature separation.
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 solution effectively prevents convective heat transfer between coolant circuits, allowing for a compact and efficient cooling system with independent temperature control in each circuit.
Implementation Method 1
The flow restrictor element is configured to fluidically connect the traction battery coolant supply chamber and the traction motor coolant supply chamber... minimizing the heat exchange between the coolant circuits
Data Source
AI summary
An automotive coolant supply device includes a traction battery coolant supply chamber, a traction motor coolant supply chamber which is separate from the traction battery coolant supply chamber, and a flow restrictor element which is arranged within the automotive coolant supply device. The flow restrictor element fluidically connects the traction battery coolant supply chamber and the traction motor coolant supply chamber. The flow restrictor element has a separating wall which is arranged between the traction battery coolant supply chamber and the traction motor coolant supply chamber, and a connection passage which is arranged within the separating wall.