Semitrailer Fairing System for Aerodynamic Drag Reduction
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Solution Overview
Problem
Current semitrailers experience high aerodynamic drag, particularly under the undercarriage and at the rear end, leading to increased fuel consumption and reduced fuel economy.
Innovation Solution
A fairing system for semitrailers is introduced, featuring a movable fairing that maintains a constant spacing with the axle assembly, reducing drag through an aerodynamic design with adjustable positioning and materials like metal, aluminum, and polymers, along with diffusers and aerodynamic panels to direct airflow and minimize pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a fairing system is added to reduce aerodynamic drag, then fuel economy is improved, but device complexity increases
Solution Approach 1:
The fairing system employs a movable fairing that can adjust its position relative to the axle assembly, transitioning between different configurations to maintain optimal aerodynamic spacing. This dynamic adjustment capability allows the system to adapt to varying operational conditions while preserving fuel economy benefits, resolving the contradiction between improved fuel efficiency and increased device complexity through intelligent motion control.
Solution Approach 2:
The fairing structure serves multiple functions simultaneously: it reduces aerodynamic drag, maintains constant spacing with the axle assembly, and can be adjusted for different operational scenarios. By integrating these multiple functions into a single system, the patent minimizes the overall device complexity while achieving significant fuel economy improvements.
2Force
If a movable fairing system is implemented to maintain constant spacing with the axle assembly, then aerodynamic drag is reduced, but device complexity increases
Solution Approach 1:
The movable fairing is designed to dynamically adjust its position to maintain constant spacing with the axle assembly, enabling the system to reduce aerodynamic drag effectively while adapting to different operational conditions through controlled motion.
Solution Approach 2:
The fairing system incorporates self-adjusting mechanisms that allow it to maintain optimal positioning relative to the axle assembly automatically, reducing the need for complex external control systems and minimizing overall device complexity while achieving drag reduction goals.
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 fairing system significantly reduces aerodynamic drag, enhancing fuel economy by minimizing the power required to overcome airflow resistance, thereby improving the efficiency of tractor-trailer trucks and similar vehicles.
Implementation Method 1
The present invention provides a fairing system for semitrailers for decreasing aerodynamic drag
Implementation Method 2
Aerodynamic structure formed of one of metal, aluminum, plastic, ABS, Poly Carbonate, TPO and other polymers
Implementation Method 3
diffusers and aerodynamic panels to direct airflow and minimize pressure
Data Source
AI summary
A semitrailer comprising a main frame having a hitch, an axle assembly connected to the main frame, the axle assembly including at least two wheels for rotation relative to the main frame, a fairing connected to an underside of the semitrailer intermediate the hitch and the axle assembly, the fairing including a pair of lateral surfaces, a bottom surface spaced from the underside of the semitrailer, and a leading surface, wherein the leading surface includes an intake opening, and wherein at least one of the bottom surface or the lateral surfaces includes an exit opening, and a flow path fluidly connects the intake opening and the exit opening.