What does 'rear' refer to in a car?
1 Answers
The 'Rear' button in a car is the rear windshield defogger switch. Pressing it can remove fog from the rear windshield, and some 'rear' buttons also have the function of heating the rearview mirrors. Nowadays, many car models omit the English word 'rear' and simply use a square frame with an upward wavy line icon. The reasons for car window fogging: Due to the temperature difference between the inside and outside of the car, the windows are prone to fogging. The temperature of the window glass in contact with the outside is lower, causing the water vapor inside the car to condense on the glass, forming fog. When the window temperature is below the dew point, and the air humidity is constant, if the window temperature is below the dew point, condensation easily forms on the surface of the window, leading to fogging on the front windshield. If there is a certain temperature difference between the two sides of the window, the side with the lower temperature will have a surface water saturation vapor pressure lower than the surrounding environment's vapor pressure, causing water vapor to gather on the glass surface and form tiny water droplets, resulting in fog. Defogging principle: Copper wires are embedded in the rear windshield. When there is moisture or fog on the rear windshield, an electric current is used to heat some of the copper wires. The heated windshield then dispels the fog. According to current car rear windshield defogging designs, the heating function automatically turns off after about 10 minutes to protect the heating wires. The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the car. The car air conditioning controller is a control device for the car air conditioning equipment. It regulates the car air conditioning system, providing cooling, ventilation, and defrosting functions. All equipment is securely installed, with control devices and operating mechanisms that are flexible to use, easy to operate, and perform safely and reliably.
