Vehicle Bumper Embossing Ventilation Duct Aerodynamics
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Solution Overview
Problem
Existing bumpers contribute to increased air resistance due to airflow accumulation and separation, which affects vehicle aerodynamics and drag coefficients.
Innovation Solution
A bumper design featuring a ventilation duct with a longitudinal axis forming an acute angle to the vehicle's travel direction, allowing air to be discharged efficiently and reducing airflow accumulation, combined with a C-shaped profile and a detachable cover to minimize air resistance and enhance aerodynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a bumper has an embossing for step integration, then the embossing volume can be used as a step, but air masses accumulate in front of the bumper increasing air resistance
Solution Approach 1:
The patent extracts the harmful air mass accumulation from the bumper front area by introducing ventilation openings and ventilation ducts that channel air away from the embossing region, thereby removing the source of increased air resistance while maintaining the step function
Solution Approach 2:
The ventilation duct acts as an intermediary element between the embossing and the external environment, guiding air flow through a controlled path at an acute angle to the vehicle travel direction, preventing direct accumulation in front of the bumper
2Object-affected harmful factors
If air is discharged directly from the bumper, then air resistance is reduced, but air masses are not discharged in a specific direction reducing aerodynamic efficiency
Solution Approach 1:
The ventilation duct is designed with an asymmetric orientation, extending at an acute angle to the vehicle travel direction rather than symmetrically perpendicular to it. This asymmetric configuration optimizes the airflow discharge pattern to better match the vehicle's aerodynamic flow patterns
Solution Approach 2:
The ventilation duct introduces a directional component to air discharge by extending at an acute angle rather than simply opening perpendicular to the bumper surface. This angular orientation adds a directional dimension to the airflow control, channeling air masses along a specific path that reduces turbulence and improves aerodynamic efficiency
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 solution reduces air resistance by directing airflow away from the wheel housing, preventing accumulation and flow separation, thereby improving the vehicle's drag coefficient and aerodynamic performance.
Implementation Method 1
Flow separations increase drag significantly. Another advantage of the ventilation channel is that it counteracts flow separation at the embossing.
Implementation Method 2
The advantage is that the air resistance of the bumper according to the preamble of claim 1 is reduced by this measure.
Data Source
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AI summary
The invention relates to a bumper (10) comprising at least one embossing (20), wherein the embossing (20) extends in the opposite direction of vehicle travel (12) and the embossing (20) comprises a base surface (22), a rear surface (28), an inner surface (24) and an outer surface (26), wherein the base surface (22) is designed as a step and wherein the rear surface (28) has at least one first vent opening (30). It is provided that the first vent opening (30) is connected to a vent channel (40) and the vent channel (40) has a longitudinal vent channel axis (42) which forms an acute angle (16) with the direction of vehicle travel (12).