Handling Tool for Fuel Injector Nozzle Sealing Tip
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Solution Overview
Problem
The challenge in fuel injector testing machines is the difficulty in inserting and retrieving nozzle sealing tips due to restricted access and the oily environment, which complicates handling and leads to potential leakage and improper sealing.
Innovation Solution
A handling tool with a capture device and magnet assembly is designed to securely grip and retain the nozzle sealing tip during insertion and retrieval, featuring a capture cavity and retention formations to facilitate easy handling and alignment, and a magnet assembly for secure attachment and release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual handling of nozzle sealing tips is attempted in the oily environment, then direct control is possible, but handling difficulty increases and leakage risk rises
Solution Approach 1:
The handling tool serves as an intermediary device between the operator and the nozzle sealing tip. It features a capture device with retention formations that securely hold the sealing tip, and a gripping device with magnet assembly that enables reliable manipulation. This intermediary tool prevents direct contact with oil-contaminated components while providing controlled handling, thus improving sealing reliability without compromising handling ease
Solution Approach 2:
The patent replaces manual mechanical handling with a magnet-based gripping system. The magnet assembly generates magnetic attraction forces to securely hold the ferromagnetic nozzle sealing tip, eliminating the need for direct manual gripping. This substitution prevents oil contamination during handling while maintaining precise control, resolving the contradiction between reliability and ease of operation
2Adaptability or versatility
If tooling is placed within the cavity of the manifold assembly, then adapter configuration is achieved, but insertion and retrieval difficulty increases due to restricted access
Solution Approach 1:
The handling tool is designed with a long, slender structure that extends along the axial dimension, enabling it to reach into the restricted cavity space of the manifold assembly through the limited access aperture. The tool's dimensional configuration allows it to navigate the constrained geometry, placing adapter components within the cavity while maintaining external handling capability, thus achieving adaptability without sacrificing operational ease
Solution Approach 2:
The handling tool acts as an intermediary mechanism that bridges the gap between the external operating environment and the internal cavity space. It features a capture device that can be inserted through the limited access opening and securely hold adapter components within the cavity, facilitating both insertion and retrieval operations despite restricted access conditions
3Reliability
If the capture device uses a non-circular opening, then retention capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The capture device incorporates a non-circular opening with an asymmetric cross-sectional shape that corresponds to the geometry of the nozzle sealing tip. This asymmetric configuration provides mechanical interference fit and prevents rotational movement, ensuring reliable retention. The design accepts standard manufacturing tolerances by using simple geometric forms like rectangular or oval openings that are easier to manufacture with conventional machining processes
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 tool enables reliable and efficient insertion and retrieval of nozzle sealing tips, preventing leakage and ensuring proper sealing, even in an oily environment, by providing a secure grip and alignment mechanism.
Implementation Method 1
The magnet assembly optionally comprises a magnet within a magnet housing configured to attenuate a magnetic field generated by the magnet, so that the magnetic field is asymmetrical around the magnet assembly
Data Source
AI summary
A handling tool is provided for handling an adaptor for a fuel injector testing machine, the adaptor being arranged to configure a testing assembly of the testing machine for use with a respective fuel injector. The handling tool includes a tool body configured to be gripped by a user and a capture device that can be inserted into the testing assembly to capture the adaptor and retain the adaptor as the handling tool is withdrawn from the testing assembly.