Suction Oil Filter Contour Connection for Low-Cost Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional suction oil filters for transmissions and internal combustion engines have high production costs due to the use of screw connections and brass sleeves for connecting the pressurized oil supply pipe, which increases material and assembly costs.
Innovation Solution
The suction oil filter design incorporates a contour connection between the oil filter housing and the pressurized oil supply pipe, eliminating the need for screw connections and brass sleeves, and uses injection molding to create a monolithic component with sliding guides and snap connections for assembly, reducing material and assembly costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw connections with brass sleeves are used to connect the pressurized oil supply pipe, then connection strength and reliability are improved, but manufacturing costs and assembly complexity increase
Solution Approach 1:
The pressurized oil supply pipe is integrated directly into the oil filter housing as a monolithic component through injection molding, eliminating separate connection parts like brass sleeves and screws. This merging of components reduces manufacturing steps and material costs while maintaining connection reliability through the molded-in contour connection.
Solution Approach 2:
The mechanical screw connection system is replaced with a molded contour connection system. The contour connection with sliding guides and snap connections provides sufficient mechanical engagement and sealing without requiring threaded fasteners, thereby reducing assembly complexity and manufacturing cost.
2Strength
If screw connections with brass sleeves are used to connect the pressurized oil supply pipe, then connection strength is improved, but assembly time and complexity increase
Solution Approach 1:
The pressurized oil supply pipe and oil filter housing are combined into a single molded component, eliminating multiple separate parts (brass sleeves, screws, gaskets) and their associated assembly steps. The contour connection is built-in during injection molding, dramatically simplifying assembly while maintaining structural integrity.
Solution Approach 2:
The complex mechanical assembly of screw threads, brass sleeves, and sealing elements is replaced with an integrated contour connection design. The sliding guides and snap connections provide sufficient mechanical strength and sealing through geometric interlocking and elastic deformation, reducing assembly complexity.
3Ease of manufacture
If contour connection with snap connections is used to connect the pressurized oil supply pipe, then manufacturing cost is reduced, but connection strength may be compromised
Solution Approach 1:
The pressurized oil supply pipe is merged with the oil filter housing as a monolithic injection-molded component. This integration eliminates the need for separate fasteners and connection hardware, reducing manufacturing cost while ensuring inherent connection strength through the molded material itself and the geometric design of the contour connection with sliding guides.
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 design significantly reduces production costs by eliminating the need for screw connections and brass sleeves, while ensuring a secure and efficient connection between the oil filter housing and the pressurized oil supply pipe, preventing cavitation and ensuring a reliable oil circuit.
Implementation Method 1
Cavitation can occur in a suction oil flow suctioned by the suction pump, which can damage the suction pump. In order to avoid or reduce the occurrence of cavitation, the pressurized oil flow returned by the suction pump is injected into the suction oil flow through the nozzle
Data Source
AI summary
A suction oil filter for a transmission or combustion engine including an oil filter housing made of plastic and having at least one suction channel that can be connected to a suction side of a suction pump and at least one return channel feeding into the suction channel for a pressurized oil flow returned by the suction pump. The return channel is provided with at least one nozzle in the region of the opening thereof into the suction channel, as well as at least one pressurized oil supply pipe which is linked to the return channel and can be connected to a pressure side of the suction pump, and which is connected to the oil filter housing via at least one contour connection.