Fuel Pump Controller Cooling Plate Heat Exchange
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Solution Overview
Problem
Conventional fuel supply systems face challenges in effectively cooling the controller due to limited cooling capability, especially when the clearance between the fuel tank and the car body is small, and the use of resin materials reduces thermal conductivity, leading to insufficient heat exchange.
Innovation Solution
A fuel supply system that incorporates a metallic cooling plate disposed within the fuel tank to directly contact the controller and facilitate heat exchange with the fuel, enhancing cooling efficiency and compactness, while using a sealant to prevent fuel permeation and maintain the cooling plate's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling fin is provided on the external surface of the lid member for air cooling, then the controller can be cooled, but the cooling capability is reduced when the clearance between the fuel tank and car body member is small
Solution Approach 1:
The patent applies hydraulic cooling by circulating fuel through a cooling fin structure. The fuel acts as a cooling medium, absorbing heat from the controller through thermal conduction and convection, thereby resolving the limitation of air cooling in tight spaces where clearance is insufficient
2Temperature
If a cooling structure using fuel is adopted with a metallic cooling plate contacting the controller, then cooling efficiency is improved, but fuel permeation through the plate becomes a problem
Solution Approach 1:
The patent employs a composite structure consisting of a metallic cooling plate combined with a resin layer. The metallic plate provides high thermal conductivity for efficient cooling, while the resin layer acts as a barrier to prevent fuel permeation, thus achieving both cooling efficiency and fuel containment reliability
3Ease of manufacture
If a resin-made fuel pipe is used to circulate fuel, then the system is easier to manufacture, but the cooling capability decreases due to low thermal conductivity
Solution Approach 1:
The patent uses a composite fuel pipe structure with an inner resin layer for fuel containment and an outer metallic layer for heat dissipation. This composite design maintains the ease of manufacture associated with resin while significantly improving thermal conductivity and cooling capability through the metallic component
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 system achieves improved cooling of the controller through direct heat exchange with fuel, maintaining efficiency even in tight spaces and outperforming conventional air cooling and resin-based cooling structures, ensuring reliable operation of the fuel supply system.
Implementation Method 1
a cooling plate that is disposed in the fuel tank and cools the controller by contacting the controller
Implementation Method 2
a fuel outlet device that allows for a flow of the fuel onto the cooling plate for heat exchange between the fuel and the cooling plate
Data Source
AI summary
A fuel supply system is disclosed that includes an electric fuel pump, a controller for controlling operations of the fuel pump, and a cooling plate that is disposed in the fuel tank and cools the controller by contacting the controller. Moreover, the system includes a fuel outlet device that allows for a flow of the fuel onto the cooling plate for heat exchange between the fuel and the cooling plate. A fuel supply system is also disclosed that includes a sub tank disposed in the fuel tank and a fuel pump that is disposed in the sub tank, increases a pressure of the fuel, and moves the fuel. Furthermore, the system includes a controller for controlling operations of the fuel pump and a cooling plate that is disposed in the sub tank and cools the controller by contacting the controller.