Applicator Tool for Valve Seat Bore Sealant Application
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Solution Overview
Problem
The existing methods for applying sealant to valve seat bores in internal combustion engines are inconsistent, leading to excessive sealant usage and waste, as well as safety hazards due to sharp edges and prolonged application times.
Innovation Solution
An applicator tool with a sealing portion, wiper portion, and circumferential groove is used to position and evenly distribute sealant within the valve seat bore, allowing for precise application and removal without direct contact with the engine, thereby reducing waste and improving safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sealant is applied directly to the valve seat bore surface using a syringe or brush, then the sealant can be applied to the desired surface, but the application is inconsistent and results in excessive sealant usage and waste
Solution Approach 1:
The applicator tool pre-positions a controlled amount of sealant in its groove before insertion. The sealant is loaded into the groove in advance, and the tool's geometry ensures precise placement along the valve seat bore surface during insertion, eliminating the need for manual spreading and preventing excess sealant application.
Solution Approach 2:
The applicator tool acts as an intermediary between the sealant and the valve seat bore surface. It transfers the sealant from the loading source to the target surface in a controlled manner, ensuring even distribution and preventing direct contact between the operator and the sharp edges of the bore.
2Manufacturing precision
If manual spreading of sealant is performed using a finger or brush, then the sealant can be distributed on the surface, but the process is inconsistent and pushes sealant onto surfaces where no sealant is desired
Solution Approach 1:
The applicator tool performs the spreading function automatically through its own geometry and motion. As the tool is inserted into the valve seat bore, the sealant in the groove is naturally distributed along the surface by the tool's movement, eliminating the need for separate manual spreading operations.
Solution Approach 2:
The applicator tool combines multiple functions into a single device: sealant storage (groove), sealant transfer, and sealant distribution. This integration eliminates the need for separate syringe and brush operations, reducing both time and inconsistency in the application process.
3Ease of operation
If a person's finger is used to spread sealant on the valve seat bore, then the sealant can be smoothed, but the sharp edges of the machined surfaces can cause injury
Solution Approach 1:
The applicator tool serves as a protective intermediary between the operator's finger and the sharp edges of the valve seat bore. The tool's body shields the operator's hand from contact with hazardous surfaces while still enabling effective sealant application and smoothing through the tool's own structure.
Data Source
AI summary
An applicator tool positionable within a valve seat bore of a cylinder head for an internal combustion engine. The applicator tool includes a sealing portion extending radially outwardly from a base body of the applicator tool for sealing abutment with the valve seat bore, a wiper portion extending radially outwardly from the base body and narrower in diameter than the sealing portion, and a circumferential groove between the sealing portion and the wiper portion and recessed relative to the wiper portion, wherein the circumferential groove has a groove base which is circumferentially continuous.