Universal Injector Extractor with Hinged Pivot for Rotational Removal
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Solution Overview
Problem
Existing methods for extracting a stuck injector from a vehicle engine are laborious and difficult due to oxidation and scale presence, particularly when using high-pressure connectors, and lack adaptability for different injector models and engine environments.
Innovation Solution
A universal extractor kit with a shooter and inertia hammer system, featuring an articulation piece for sliding pivot connection, allows for parallel extraction and rotational loosening of the injector, using spacers and adapters for secure attachment and adaptability to various connectors and environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional slide hammer extractor is used to remove a stuck injector, then the injector can be extracted from the housing, but the operation becomes difficult and time-consuming due to oxidation and carbon buildup
Solution Approach 1:
The extractor device incorporates a hinged intermediate piece that allows dynamic adjustment of the slide hammer rod position. This enables the operator to adapt the extraction angle and position during the process, making it easier to remove stuck injectors without excessive time loss
Solution Approach 2:
The extractor is divided into separate components: a puller with shaft, a hinged intermediate piece, and a slide hammer with rod and mass. This segmentation allows each component to perform its specific function optimally and enables easy assembly/disassembly for different extraction scenarios
2Ease of operation
If an extractor is attached to the high-pressure fitting for injector removal, then extraction can be performed, but the limited space in the engine compartment makes correct positioning of the slide hammer difficult
Solution Approach 1:
The hinged intermediate piece allows the slide hammer rod to be positioned at various angles and locations relative to the injector. This dynamic positioning capability enables correct extraction even in the limited space of the engine compartment, as the operator can adjust the rod position to fit available clearance
3Adaptability or versatility
If a universal extractor design is used, then it can adapt to different injector models and high-pressure fittings, but the device complexity increases to accommodate various configurations
Solution Approach 1:
The extractor is designed with universal components that can accommodate different injector types and high-pressure fitting configurations. The hinged intermediate piece and adjustable rod position allow the same basic device to work with various injector models without requiring multiple specialized tools
Solution Approach 2:
By segmenting the extractor into modular components (puller, hinged piece, slide hammer), the design achieves versatility through configuration rather than complexity. Each segment performs a simple function, but their combination provides adaptability to different injector types
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
Facilitates easy extraction of injectors by combining upward translation and rotational movements, adapting to different engine environments and injector models, while protecting the high-pressure connector from damage.
Implementation Method 1
the intermediate piece is a hinged piece linked by a sliding pivot joint to the shaft of the shooter
Implementation Method 2
The injector is then extracted by striking the weight against the rod's tip
Data Source
Figure 1a
Figure 1b~2
Figure 3~4b
AI summary
A method for extracting an injector (1) stuck in its housing (3) within a cylinder head (5) of a vehicle engine, said injector (1) comprising a body (9) a portion of which protrudes outside the housing (3), the protruding portion having a high-pressure fitting (13), the method comprising attaching an extractor (15) to the high-pressure fitting (13) of the injector (1); and extracting the injector (1) by means of the extractor (15). The method is notable in that step b) of extracting the injector (1) comprises freeing the injector (1) so as to rotate the injector (1) about the longitudinal axis of the injector (1).