A structure for solving the whistling sound at the tip of a car hood

By designing a spoiler cylinder on the outer trim of the front bumper grille, the airflow path is altered, solving the whistling problem at the tip of the hood, improving aerodynamic performance and ride comfort, while reducing costs and mold expenses.

CN116902097BActive Publication Date: 2026-05-26JIANGLING MOTORS
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Patent Information

Application Number
CN202310939797.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-28
Publication Date
2026-05-26
Estimated Expiration
2043-07-28

AI Technical Summary

Technical Problem

When a car is traveling at high speed, the surface difference between the outer trim of the front bumper grille and the tip of the hood is insufficient, which causes a whistling sound from the tip of the hood and affects the driving experience. At the same time, existing technologies for adding sealing strips are costly and require large molds.

Method used

A spoiler cylinder is set on the outer surface of the front bumper grille trim. The spoiler cylinder changes the airflow path and reduces the direct impact of airflow on the tip of the hood. It is made of aluminum alloy and fixed with adhesive to increase the design layering and three-dimensionality.

Benefits of technology

It effectively reduces whistling noise at the tip of the hood, optimizes airflow outside the vehicle, improves aerodynamic performance and ride comfort, while reducing costs and mold repair expenses.

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Abstract

This invention discloses a structure for solving the whistling sound at the tip of a car hood, belonging to the field of automotive technology. It includes a front bumper body, which is the main component of this structure; a hood, hinged to the vehicle body and located on top of the front bumper body; a front bumper grille trim strip, installed on the outer side of the front bumper body; and a spoiler cylinder, disposed on the outer surface of the front bumper grille trim strip. This invention, by incorporating the spoiler cylinder, disrupts the original airflow path through its design on the front bumper grille trim strip. The spoiler cylinder's features allow airflow to bypass the tip of the hood or reduce its direct impact, thereby reducing airflow separation and vortex formation, thus lowering the probability of whistling. Furthermore, the spoiler cylinder can be molded onto the outer surface of the front bumper grille trim strip, incurring only a small molding cost, which is negligible and easy to implement.
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