Engine Air Intake Control via Acoustic Tuning Frequency
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Solution Overview
Problem
Current methods for controlling air supply to internal combustion engines in vehicles are not optimized for precision and reliability, leading to suboptimal performance and increased pollutant emissions.
Innovation Solution
A method that calculates an air intake coefficient To ADM, taking into account acoustic tuning frequency variations, to determine the position of a regulating member in the air supply pipe, which is movable between fully open and closed positions, using a formula that incorporates engine speed, valve closing angles, and temperature variations to optimize air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional air supply control methods are used, then the system is simple to operate, but the air supply precision is insufficient leading to suboptimal engine performance and increased emissions
Solution Approach 1:
The patent implements a feedback mechanism by continuously monitoring the actual air flow rate and comparing it with the target air flow rate. The electronic control unit adjusts the regulating member position based on this comparison to minimize the difference between actual and target values, thereby improving air supply precision through closed-loop control.
Solution Approach 2:
The patent changes the control parameter from simple throttle position to air flow rate, which is directly related to engine performance and emissions. By controlling the regulating member to achieve a target air flow rate rather than simply positioning a throttle, the system achieves better precision in air supply control.
2Productivity
If the regulating member is positioned to optimize air flow, then engine performance improves, but pollutant emissions may increase due to imprecise control
Solution Approach 1:
The feedback loop continuously monitors actual air flow and adjusts the regulating member to maintain the target air flow rate, ensuring optimal combustion conditions that reduce pollutant emissions while maintaining engine performance.
Solution Approach 2:
The patent replaces conventional mechanical throttle control with an electronically controlled regulating member positioned in the air supply pipe. This electronic control system provides more precise adjustment of air flow, enabling better optimization of the air-fuel mixture for reduced emissions.
3Reliability
If the control system adjusts throttle position based on basic parameters, then the system is easy to manufacture, but reliability is insufficient for optimal air supply control
Solution Approach 1:
The feedback mechanism enhances reliability by continuously monitoring and correcting air flow deviations. The electronic control unit processes sensor signals and automatically adjusts the regulating member to maintain accurate air supply control under varying engine conditions.
Solution Approach 2:
The system transitions from controlling throttle position to controlling air flow rate directly. This parameter change improves reliability because air flow rate is the critical parameter for engine performance and emissions, allowing the system to compensate for variations in engine conditions more effectively.
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
This approach enhances the precision and reliability of air supply control, minimizing pollutant emissions by accurately adjusting the air intake coefficient based on acoustic tuning frequency variations, thereby optimizing engine operation.
Implementation Method 1
a variation in an acoustic tuning frequency f0 of a column of air housed inside the air supply pipe (5)
Data Source
AI summary
The invention relates to a method for controlling a supply of air to an internal combustion engine (1) with which a motor vehicle is equipped. The engine (1) is equipped with an air supply pipe (5) provided with a regulating member (8) for regulating the flow rate of a flow (9) of air flowing along the air supply pipe (5). The method comprises a step of positioning the regulating member (8) which is able to move between a wide open position in which the regulating member (8) allows the flow of air (9) to pass and a closed position in which the regulating member (8) prevents such passage. The method comprises a step of calculating an air intake coefficient AADM in order to determine a position for the regulating member (8). The calculation step takes into consideration a variation in the acoustic tuning frequency f 0 of a column of air (14) housed within the air supply pipe (5).