Why doesn t the front windshield of a car have a valve with opening adjustment?

Resistance issues. When the car travels to a certain speed, if the wind resistance is too large, it will not only affect the power of the car, but also increase fuel consumption. The front windshield of the car is designed to be tilted, which can effectively reduce the wind resistance, and the streamlined body can reduce the wind resistance very low.

The vast majority of large cars, such as buses and trucks, do not have high speed requirements, and because of their large size, they are often subject to speed restrictions. Therefore, the effect of wind resistance on speed is not as important as that of a car.

Security issues. The car is designed to be tilted, which can effectively avoid the "mirror imaging effect". Due to the low height of the car, the dark road surface or roadside buildings become the "base color" of glass.

If installed vertically, the glass is like a mirror, and the image of the occupants and seats in the car will be reflected on the glass to form a virtual image, interfering with the driver's normal judgment. However, due to the high body of buses and large trucks, the vertical glass background is a light-colored sky, and the virtual image formed by the people and objects in the bus is basically not displayed, and the interference caused to the driver is almost zero.

The front windshield of a car is not the same as other position glass, the front windshield of a car is laminated glass, while the other glass is tempered glass. With the development of automotive glass technology, new windshield technologies have also emerged. For example, it can reduce the impact of sunlight on the cabin of a car and improve the level of comfort.

The "green glass" that is widely used today is the use of reflective coating processes or to improve the composition of glass.

Only visible light from sunlight enters the cabin, blocking ultraviolet and infrared rays. At present, there is an anti-infrared radiation silver film glass, in which a silver-plated film is added to multiple laminated glass, and its infrared reflectivity is 48%.When sunlight passes through this seemingly ordinary glass, there is a 23% reduction in light and heat

In fact, this glass also acts as an insulating and energy-saving device, which can relatively reduce the energy loss of the air conditioner. In addition, the windshield of a car in the cold region of the north is easy to fog and freeze, a kind of car glass that can be heated. If the front windshield is equipped with a valve with opening adjustment, it will be a big safety hazard.

Wind resistance is not as important as a car.

Because it is easy to touch and reduces security, it is not installed.

It's not because he doesn't involve it, it's that there's no need to design this button.

Wind resistance doesn't have that much effect on speed, and cars don't need so much design.

Because if there is such a valve, there will be certain safety hazards.

Because after use, it is concluded that this device is not so necessary.

Personally, I think this design can be considered, and it is a very convenient function.

Because if the wind resistance is too large when used, it will affect the power of the car and increase fuel consumption.

Because this will increase the cost a lot, and this design is relatively frivolous.

This is mainly due to safety issues, and the fear of too much wind will affect driving safety.

Hey, this tanker truck first door oh glass, transparent, transparent this law finger and containing the door hey, is a universal transparent, there is a kind of Guo Degang's shed glass fiber reinforced plastic "Pang Men Zhengdao" homer effect is also very good, with people themselves often only smile with this glass hammer FRP that that natal, well.

The function of the valve is to control the opening and closing of the substance passing through the valve!

There are multiple valves on the gas car, different models have different valves, there are gas valves, there are liquid valves, I don't know which one you refer to!?

This depends on what the specific valve is, and some are single.

Valves used to store liquids, such as water tanks, are opened when it is necessary to drain the cooling water.

Glass valves are mainly based on FRP ball cracking valves, and the specifications are: DN40, DN50, DN65, DN80, DN100, etc., and you should choose glass according to the size of the pipelineEntering the valveThe caliber of the specifications.

If it's a row bai

In the case of air valves, there will be du

A control device is connected to the center console where it is opened by manual opening, and if it is a pressure relief valve, then.

The right is automatically turned on. You can refer to the valve exhaust control here.

Your question is not very reliable!

You didn't even say what the valve was!

I want to ask, I changed the middle section of the sound of the emperor, Martha has a valve at the end, and the sound is still very loud when the valve is closed.

Hello friend, the air bag valve exhaust is stable pressure

Do you change the remote control valve exhaust to only the tail end or the middle end and the whole section? If only the tail end is fully open, the power is the same as the original, but if the part is closed, it will affect the original power. No matter how long the original factory exhausts time, it will not leak, unless it is damaged by man.

The main thing is that there are more water valves.

Now glass factories need more oxygen valves and natural gas valves.

Wherever there is water, there will be valves.