Open open, two eggs, suddenly 1 of "pa", hit the windshield, the line of sight blurred instantly. The driving sight is blurred, not necessarily because the wiper is broken. Some friends say this is rare. There is fog on the front windshield, and the wiper can't be cleaned with it on. Especially on rainy days and nights, it's really killing me. I can't wait to just take down the windshield.
In this case, the first reaction of most friends is to throw away the old wiper and replace it with a new one. Share a more cost-effective method, but the effect may be more immediate.
The culprit is probably the oil film.
The blurred driving sight is not necessarily that the wiper is broken, but it may also be that an oil film is stuck on the windshield.
The method of judging whether there is oil film is also very simple. Spray some water on it. If there are many uneven water stains on the glass surface, it means that the oil film is already very serious.
Take time to go to the store or clean it yourself. After that, you will find that the windshield is much cleaner and brighter. It looks more comfortable and clearer than before, which means safer.
The oil film may also cause the noise of the wiper.
In addition, sometimes the wiper is noisy, and the culprit is probably the oil film. Lv Hongming et al. published a paper in Journal of Tribology on the influence of roughness of contact surface on friction squeal noise.
As mentioned above, when the wiper brushes, the self-excited vibration of the system will be caused by friction, resulting in 1 ~1noise in the range of16 kHz, which is technically called friction squeal noise.
Did anyone ever scratch the blackboard with their nails when they were young? Dust, bird droppings, shellac, etc. , mixed in the oil film on the windshield, will cause uneven glass surface after adhesion.
Junior high school physics said: the rougher the surface, the greater the friction force generated when rubbing, and the noise that forms this friction scream will be more obvious. Therefore, the noise of the wiper becomes louder when it is used, so don't change it in a hurry. You can also try cleaning the glass first.
It is better and more labor-saving to use degreasing film agent.
The method of degreasing film is also relatively simple, and now there is a special degreasing film for automobile glass. Its composition is developed for automobile oil film, which can better dissolve stubborn oil film, which makes people say "get twice the result with half the effort".
It's a dirty stain on the range hood at home. Using kitchen cleaner will be more effective and labor-saving than detergent and soap.