Movable Barrier Air Precleaner for Debris Separation
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Solution Overview
Problem
Existing precleaners for internal combustion engines are less effective at separating debris from intake air at reduced engine outputs, leading to reduced airflow rates that compromise debris removal efficiency.
Innovation Solution
An apparatus with a stationary and movable barrier system in the precleaner that adjusts airflow based on changing engine output, redirecting airflow to increase the effectiveness of debris separation by ensuring optimal airflow rates through specific portions of the separator panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separators are designed for high air flow rates corresponding to elevated engine output, then debris separation effectiveness is improved at high output, but debris separation effectiveness deteriorates at reduced engine output
Solution Approach 1:
The patent applies the dynamics principle by implementing a movable barrier that can change position based on operating conditions. The barrier transitions between a first position optimized for high air flow rates and a second position optimized for reduced air flow rates, allowing the separator to adapt dynamically to varying engine output levels and maintain effective debris separation across different operating regimes
Solution Approach 2:
The patent applies parameter changes by modifying the airflow distribution parameters through barrier repositioning. By changing the barrier position, the system adjusts the air flow rate through different portions of the separator, optimizing separation effectiveness for each operating condition without changing the physical separator structure
2Loss of energy
If air flow rate through precleaner is reduced at lower engine output, then energy consumption is reduced, but debris separation effectiveness deteriorates
Solution Approach 1:
The patent applies local quality by directing air flow through specific portions of the separator based on operating conditions. The movable barrier concentrates airflow through selected separator areas, ensuring that the active separation zones receive optimal airflow velocity for effective debris removal, while other areas remain inactive or receive minimal flow
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
Enhances debris separation efficiency by adjusting airflow to match the operational conditions of the engine, maintaining effective debris removal even at lower engine outputs, thereby prolonging the service life of air cleaners and engines.
Implementation Method 1
a movable barrier coupled to the stationary barrier and configured to move between an open position and a closed position in response to changes in an air flow rate through the precleaner
Implementation Method 2
a separator panel coupled to the sleeve and configured to separate debris from air flowing through the separator panel and into the intake conduit
Data Source
AI summary
An apparatus for partially blocking airflow in a precleaner for an internal combustion engine may include a stationary barrier configured to be mounted in a precleaner. The apparatus may further include a movable barrier coupled to the stationary barrier and configured to move between an open position and a closed position in response to changes in an air flow rate through the precleaner. When the air flow rate through the precleaner reaches a threshold air flow rate, the movable barrier may move from the closed position toward the open position, and when the air flow rate through the precleaner drops below the threshold air flow rate, the movable barrier may move from the open position toward the closed position.