Gravity-Fed Intake Valve Cleaning System for GDI Engines
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Solution Overview
Problem
Modern gasoline direct injection engines face issues with carbon and oil deposits building up on intake valves, leading to decreased engine efficiency and potential damage, as conventional cleaning methods are either ineffective or require removing major engine components.
Innovation Solution
A gravity-fed cleaning system that introduces a cleaning fluid into the intake system at a variable rate, using a combination of fluid dispensers and meter assemblies to ensure effective cleaning of intake valves and surrounding areas without disassembling the engine, leveraging gravity and engine vacuum to maintain fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cleaner is sprayed into the air intake mouth while the engine is running, then the cleaner can reach the intake valves by floating on the air stream, but the highly atomized cleaner falls out of suspension before arrival due to the long distance between the intake mouth and the valves
Solution Approach 1:
The patent replaces the conventional spray mechanism with an ultrasonic vibration-based atomization system. The ultrasonic vibrations create fine droplets that remain suspended in the air stream longer, enabling reliable delivery to the intake valves despite the long distance. This mechanical substitution resolves the contradiction by using vibrational energy instead of conventional spray pressure.
Solution Approach 2:
The patent changes the physical parameters of the cleaner delivery system by using ultrasonic frequencies to atomize the cleaner into extremely fine droplets. This parameter change in droplet size and suspension characteristics allows the cleaner to travel the required distance without falling out of suspension, resolving the reliability issue while maintaining ease of operation.
2Ease of operation
If the cleaner is severely atomized to float in the air stream, then the cleaner can reach the intake valves, but a higher volume of cleaner is required which can flood and kill the engine
Solution Approach 1:
The patent uses ultrasonic vibration-based atomization instead of high-pressure spray systems. This mechanical substitution creates finer, more controlled droplets that require less total volume to achieve effective cleaning, thereby preventing engine flooding while maintaining the ability to reach the intake valves.
Solution Approach 2:
The patent changes the atomization parameters by using ultrasonic frequencies to create extremely fine droplets with larger surface area to volume ratio. This parameter change increases the effectiveness per unit volume of cleaner, reducing the total volume needed and preventing engine flooding while still achieving thorough cleaning.
3Manufacturing precision
If major engine components such as the intake manifold are removed to access the intake valves, then direct cleaning of the valves is possible, but the device complexity and time required increase significantly
Solution Approach 1:
The patent introduces an intermediary substance (cleaner) that can be delivered through the existing air intake system to reach the intake valves without requiring disassembly. This intermediary approach allows direct cleaning of the valves while avoiding the complexity of removing major engine components, resolving the contradiction between cleaning effectiveness and system complexity.
Solution Approach 2:
The patent enables the engine's own air intake system to serve as the delivery mechanism for the cleaner. By utilizing the existing vacuum and air flow paths, the system cleans the intake valves without requiring external intervention or disassembly, thereby maintaining simplicity while achieving effective cleaning.
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 system allows for thorough cleaning of intake valves and combustion chambers while the engine is running, preventing damage and maintaining efficiency by ensuring a high initial fluid flow rate that gradually decreases, avoiding the need for major component removal and minimizing the risk of engine stalling.
Implementation Method 1
a gravity-fed, non-pressurized tool that introduces a cleaning fluid into a vacuum port at an intake site of a vehicle at metered rates using gravity
Implementation Method 2
introduces a cleaning fluid into a vacuum port at an intake site of a vehicle
Data Source
AI summary
Systems and methods provide for cleaning the air intake valves and surrounding areas of an engine. A gravity-fed cleaning-fluid dispenser may feed cleaning fluid into a hose through a metered device that meters a rate at which the cleaning fluid flows into the hose. A second fluid meter connected to a distal end of the hose further meters the rate at which a mixture of the cleaning fluid and air from is dispersed into the running GDI engine. Cleaning fluid may be distributed to the engine at a gradually decreasing rate as a volume of cleaning fluid in the dispenser decreases as the service progresses.