Why Does Windshield Washer Fluid Flow Upwards?
2 Answers
Windshield washer fluid flows upwards because the vehicle speed is sufficient to make the force of wind greater than gravity, causing the washer fluid to flow upwards. Overview of Automobile Windshield: Car windshields are generally made as a single large curved piece with certain curvatures on all sides. The material is mainly laminated tempered glass, which can withstand strong impacts. Function of the Windshield: The windshield provides a survival space for passengers. When impacted and shattered, the glass breaks into small pieces with blunt edges, minimizing harm to occupants. Morphological Characteristics of the Windshield: Car windshields are typically designed as a single large curved piece with certain curvatures on all sides. This curved glass is a highly technical product, both in terms of manufacturing and assembly, as it involves considerations such as vehicle model, strength, insulation, and installation.
From my years of driving experience, it's quite common for windshield washer fluid to spray upwards. Actually, this is mainly because the position and design angle of the nozzles are carefully considered. Those small spray nozzles on the hood are usually adjusted to an upward angle so that the water flow can cover the entire windshield, especially when the airflow during driving helps push the water upwards to disperse, cleaning off raindrops or dust and providing clearer visibility. If it sprayed downwards, the water might only stay on the lower part and fail to effectively remove dirt. Car manufacturers test the water pressure and direction during design to ensure the fluid sprays upwards smoothly, which is crucial for safe driving—since you don't need to wipe frequently to immediately clear away debris obstructing your view.
