Pneumatic Fuel Injector Extraction Device
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Solution Overview
Problem
Conventional pneumatic extraction devices for diesel engine fuel injectors are inconvenient, time-consuming, and pose safety hazards due to the need for a two-stage operation and manual handling of the fuel injectors during extraction.
Innovation Solution
A pneumatic extraction device with a holding group, air intake group, and vibration group, where the vibration group includes a main shaft and a vibrating cylinder that provides a vibration force to separate the fuel injector from the cylinder, allowing for easy and safe removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional pneumatic extraction device uses a two-stage operation to remove the fuel injector, then the fuel injector can be safely removed, but the operating time increases and convenience decreases
Solution Approach 1:
The patent combines the vibration function and extraction function into a single integrated operation. The vibration element is directly connected to the fuel injector through a connection structure, allowing the user to hold and control the vibrator while it vibrates the injector out of the cylinder in one continuous action, eliminating the need for separate vibration and extraction steps.
Solution Approach 2:
The device allows the user to directly hold the vibrator during operation, making the user part of the control system. This enables real-time observation and control of the extraction process, allowing the user to stop vibration at the appropriate moment when the injector is fully extracted, eliminating the need for complex automated control systems.
2Object-affected harmful factors
If the user does not hold the vibrator during vibration to avoid vibration impact, then safety is improved, but control over the fuel injector movement is lost
Solution Approach 1:
The patent extracts the harmful vibration impact from the user by using a flexible connection structure (such as a spring or elastic element) between the vibrator and the fuel injector. This allows the vibrator to transmit extraction force while isolating the user from the high-frequency vibrations, enabling the user to hold the vibrator safely during operation.
Solution Approach 2:
The patent introduces an intermediary connection structure between the vibrator and the fuel injector that serves as a buffer. This intermediary element (such as a spring mechanism or flexible coupling) transmits the necessary extraction force while absorbing and isolating the harmful vibrations from reaching the user's hand.
3Reliability
If the fuel injector is tightly fitted on the cylinder, then the sealing and compression performance are improved, but the ease of manual removal decreases
Solution Approach 1:
The patent applies mechanical vibration directly to the fuel injector through a vibration element that contacts the injector body. The high-frequency vibrations create relative motion between the injector and cylinder, reducing friction and breaking the seal between them, which enables easy removal of the tightly fitted injector without damaging either 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 device reduces operating time and improves safety by allowing the fuel injector to be directly pulled out without manual operation, maintaining control of the device during extraction to prevent accidental flying of the injector.
Implementation Method 1
the vibration group is connected to the holding group and the air intake group and has a main shaft and a vibrating cylinder. The main shaft is connected to the connecting sleeve and is opposite to the handle, extends into the outer shell, and has a fixing head disposed on a bottom end of the main shaft. The vibrating cylinder is slidably mounted around the main shaft, is mounted in the outer shell, and has an outer external surface non-contacted with an internal surface of the outer shell.
Data Source
AI summary
A pneumatic extraction device has a holding group, an air intake group, and a vibration group. The holding group has a handle and an outer shell. The handle has at least one connecting arm formed on and protruded from the handle. The outer shell is connected to the at least one connecting arm opposite to the handle such that the outer shell and the handle are spaced apart from each other. The air intake group is connected to the holding group and has a connecting sleeve connected to the handle. The vibration group is connected to the holding group and the air intake group and has a main shaft and a vibrating cylinder. The main shaft is connected to the connecting sleeve. The vibrating cylinder is slidably mounted on the main shaft and has an outer external surface non-contacted with an internal surface of the outer shell.