Fuel Pump Controller Spacing and Gas Venting
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Solution Overview
Problem
Conventional fuel pump modules are susceptible to failure due to gases generated from the fuel tank entering the controller, potentially causing damage to electronic components and explosion-related impacts.
Innovation Solution
A fuel pump module design where the controller is spaced apart from the fuel tank with a frame member having an air gap, preventing gas infiltration and using a molding member to enclose electronic parts, thereby discharging gases to the atmosphere and protecting components from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the controller is installed on the upper surface of the plate body exposed to the fuel tank, then the controller can be easily accessed and installed, but gases generated from fuel can penetrate the plate body and enter the controller causing electronic part failures
Solution Approach 1:
The patent introduces a housing as an intermediary component between the controller and the fuel tank. This housing encloses the controller and includes a filter that blocks fuel gases from entering the controller while allowing the controller to remain mounted on the plate body for easy installation and access.
Solution Approach 2:
The patent employs a housing shell with a filter membrane to selectively block fuel gases while allowing air circulation. The filter acts as a selective barrier that permits beneficial air flow while preventing harmful fuel vapor infiltration into the controller.
2Device complexity
If the controller is installed close to the fuel tank, then the structure is compact, but explosion of inner parts such as condensers can transfer impact energy to the plate body
Solution Approach 1:
The patent implements a housing that surrounds the controller components, including condensers, before any potential explosion can occur. This housing acts as a pre-established protective barrier that absorbs and contains explosion impact energy, preventing it from transferring to the plate body or fuel tank.
Solution Approach 2:
The housing serves as an intermediary protective structure between the potentially explosive electronic components and the fuel tank. It isolates the controller from direct exposure to fuel gases while also providing mechanical protection against explosion impacts.
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
Effectively prevents gas-generated damage to electronic parts by discharging gases to the atmosphere and encasing components within the frame member, reducing the risk of explosion impacts and maintaining module functionality.
Implementation Method 1
an air gap formed between the plate body and the controller, and allowing an outdoor air to be circulated for discharging a gas generated from a fuel in the fuel tank to the atmosphere without absorption/infiltration of the gas to the controller
Data Source
AI summary
Disclosed herein is a vehicle fuel pump module. The vehicle fuel pump module is configured such that a controller is spaced apart from a plate body installed so as to be exposed out of a fuel tank by a support member and an air gap is provided between the plate body and the controller. Consequently, a gas generated from a fuel in the fuel tank is discharged to the atmosphere by an outdoor air circulating the air gap and thus it may be possible to prevent the gas from affecting electronic parts of the controller.