Adjustable Spoiler Control via Vehicle Weight Variation
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Solution Overview
Problem
Conventional adjustable spoilers extend based solely on vehicle speed, leading to increased drag force and reduced fuel efficiency when vehicle weight increases due to passengers or freight, as they do not account for varying weight conditions.
Innovation Solution
A system and method that includes detectors for engine ignition, vehicle speed, and weight, with a controller setting extension and retraction reference speeds for the adjustable spoiler based on vehicle weight variations, using sensors like overall height, pressure, and tire air pressure sensors to determine optimal extension and retraction speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the adjustable spoiler is extended based solely on vehicle speed, then high-speed stability is improved, but fuel efficiency deteriorates when vehicle weight increases
Solution Approach 1:
The patent changes the control parameters for spoiler extension from speed-only to a combination of speed and weight parameters. The controller adjusts the extension decision based on real-time weight detection, modifying the operational parameters to optimize both stability and fuel efficiency under varying load conditions.
Solution Approach 2:
The patent makes the spoiler control system dynamic by continuously monitoring both vehicle speed and weight, and adjusting the spoiler extension state in real-time. This dynamic adaptation allows the system to respond to changing vehicle conditions, extending the spoiler only when both speed and weight conditions warrant it.
2Force
If the adjustable spoiler is extended when vehicle speed exceeds reference speed, then grip force is improved, but drag force increases when vehicle weight is already high
Solution Approach 1:
The patent modifies the control logic by introducing weight as an additional parameter alongside speed. The controller evaluates both speed and weight before deciding to extend the spoiler, changing the decision parameters to prevent unnecessary extension when vehicle weight is already high, thus reducing drag force while maintaining adequate grip force.
3Stability of the object's composition
If the adjustable spoiler is extended based on speed condition alone, then traveling stability is improved, but rolling resistance increases due to unnecessary tire load
Solution Approach 1:
The patent implements a dynamic control system that continuously monitors both vehicle speed and weight, and adjusts the spoiler extension state accordingly. This dynamic approach prevents the spoiler from extending under conditions of high weight and moderate speed, thereby reducing unnecessary tire load and rolling resistance while maintaining traveling stability when truly needed.
Data Source
AI summary
A system of controlling an adjustable spoiler includes an ignition detector configured to detect whether an engine is turned on or off. A vehicle speed detector is configured to detect a vehicle speed. A weight detector is configured to detect a vehicle weight that is changed when the number of passengers or the amount of loaded freight is increased or decreased. A controller is configured to determine variation of the vehicle weight, set an extension reference speed and a retraction reference speed of the adjustable spoiler based on the variation of the vehicle weight, and extend or retract the adjustable spoiler trough an actuator.