Plastic Twin-Jet Piston Cooling Nozzle Without Brazed Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Piston cooling nozzles in internal combustion engines face challenges with weight, cost, and assembly repeatability due to their metal construction, and the brazing process is expensive and difficult to control for precise dimensioning and positioning of fluid evacuation orifices.
Innovation Solution
A fluid nozzle made from a single block of plastic material with a conduit structure and evacuation orifices, using a metal insert for orientation and a fixing plate for enhanced rigidity, allowing for precise molding and reduced assembly complexity, and incorporating a valve screw for fluid regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal materials (steel) are used for the feed body, tube, and nozzle, then strength and rigidity are improved, but weight increases and manufacturing cost increases
Solution Approach 1:
The patent changes the material parameter from metal (steel) to plastic, fundamentally altering the density and weight characteristics while maintaining structural integrity through appropriate plastic material selection and design
Solution Approach 2:
The patent employs composite construction by integrating the feed body, tube, and nozzle into a single plastic component, potentially with reinforcing elements, achieving a composite structure that optimizes both weight and strength properties
2Strength
If metal materials (steel) are used for the feed body, tube, and nozzle, then strength and rigidity are improved, but manufacturing cost increases
Solution Approach 1:
The patent merges three separate metal components (feed body, tube, and nozzle) that require brazing into a single integrated plastic component, eliminating the need for complex assembly processes and reducing manufacturing cost
Solution Approach 2:
The patent changes the material parameter from metal to plastic, which fundamentally alters the manufacturing process from costly metalworking and brazing to more economical plastic molding techniques
3Ease of manufacture
If brazing is used to join the tube to the hollow body and nozzle to the tube, then assembly is achieved, but assembly repeatability deteriorates and manufacturing precision deteriorates
Solution Approach 1:
The patent merges multiple components that require brazing into a single integrated component, eliminating the assembly process entirely and ensuring precise positioning of fluid evacuation orifices through monolithic construction
Solution Approach 2:
While the main body is integrated, the patent may use segmentation in the molding process to create the complex internal conduit structure and orifices as a unified component, ensuring precise spatial relationships without assembly variability
4Ease of manufacture
If brazing is used to join the components, then assembly is achieved, but device complexity increases
Solution Approach 1:
The patent merges three separate components requiring brazing into a single integrated plastic component, eliminating the assembly process entirely and reducing device complexity
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3
AI summary
Disclosed is a fluid nozzle, in particular for an engine piston cooling fluid, comprising a hollow supply body (11) which is connected to a conduit structure (15) provided with a free end (15.2) forming a discharge end provided with orifices (17a, 17b) for discharging the fluid, the supply body and the conduit structure forming a single piece made of plastic material.