What is an R-class driver's license?

Types and Functions of Car Window Films

There are four main types of car window films: coated and composite process films, dyed films, vacuum thermal evaporation films, and metal magnetron sputtering films. The functions of each type are as follows: 1. Coated and composite process films: Their primary function is to block intense sunlight. These films are early-stage products and basically do not provide heat insulation. They were initially called sun paper or tea paper. 2. Dyed films: Most dyed car films on the market use deep-dyeing technology, which involves adding heat absorbers through deep-dyeing to absorb infrared rays from sunlight for heat insulation. However, since they also absorb visible light, the visible light transmittance is insufficient, and their clarity is poor due to technological limitations. Another major weakness is that their heat insulation function degrades quickly, and they are prone to fading, though they are relatively cheaper. 3. Vacuum thermal evaporation films: These use vacuum thermal evaporation technology to evaporate an aluminum layer onto the substrate for heat insulation. These are typically referred to as metal films, offering long-lasting heat insulation. However, their clarity is not high, affecting visual comfort, and another major drawback is their high reflectivity. 4. Metal magnetron sputtering films: As of 2018, these represent the highest technology in glass films, developed in the late 1990s after multiple technological innovations. The magnetron sputtering process involves using advanced multi-chamber high-speed rotating equipment to uniformly sputter high-grade aerospace alloy materials like nickel, silver, titanium, and gold onto high-tension PET substrates with high speed and force, based on electric and magnetic field principles. Products made with magnetron sputtering technology not only have excellent metallic texture and stable heat insulation performance but also achieve clarity, low reflectivity, and long-lasting color that other processes cannot match.

10

4

Share

Will the car floor rust if it gets wet?

Yes, it will rust. Introduction to the effects of water entering the car floor: 1. Vehicle rust and corrosion: Water entering the vehicle will corrode the floor and metal components, causing floor damage and metal parts to rust, significantly increasing the probability of vehicle failure and threatening the safety of the driver. 2. Vehicle circuit short circuit: If the water in the vehicle is not treated in time, the accumulated water may cause short circuits in some circuits on the floor. When starting the vehicle, it is easy to affect the normal driving of the vehicle due to the short circuit, and even burn out the vehicle's computer, causing vehicle failure. 3. Vehicle odor: If the water is not removed and dried in time after entering the vehicle, the remaining water will corrode the vehicle floor and cause the floor mats to mold and deteriorate, which will emit unpleasant odors and create vehicle odor.

4

1

Share

What are the reasons for a car battery having power but no response when starting?

The reasons for having power but no response when starting include the following: 1. Starter damage: (1) Symptom 1: No response when turning to START. The starter electromagnetic switch is damaged. (2) Symptom 2: A "click" sound is heard when turning to START, but the starter does not rotate. The main contacts of the starter electromagnetic switch are damaged, or the starter winding is damaged. (3) Symptom 3: A "click" sound is heard when turning to START, and the starter rotates at high speed. The starter one-way clutch is damaged. 2. Engine ignition system failure: The symptom is that when turning to START, the engine can be rotated (100r/min), but the engine does not start. Unplug the high-voltage wire (or ignition coil), and there is no spark when turning to START. 3. Engine fuel supply system failure: When in the IG position, the "buzzing" sound of the fuel pump working in the fuel tank area cannot be heard.

7

3

Share

Is the Car Dashboard Afraid of Sun Exposure?

Different materials of car dashboards have varying degrees of resistance to sun exposure as follows: 1. Hard plastic material: Under sunlight, it easily produces refraction, which can affect the driver's vision. If exposed to the sun for a long time, high temperatures may cause the hard plastic material to release some harmful gases, which are not good for the human body, and may even lead to cracking and aging. 2. Plastic material: Prolonged exposure to the sun may cause cracking, as the thermal expansion and contraction coefficients of the inner and outer layers are inconsistent, leading to cracks over time. 3. Soft-touch material: Made of PC polyacetate, it can withstand high temperatures up to 130 degrees without deformation, so it is generally not a problem. The surface of soft-touch material is not very smooth, providing a certain tactile feel, and light will be diffusely reflected on it.

20

4

Share

What is the difference between a 60Ah and 70Ah car battery?

70Ah has slightly more storage capacity, with longer discharge time compared to 60Ah which has shorter discharge duration. Below is an introduction to car batteries: 1. Conventional Battery: The plates of conventional batteries are composed of lead and lead oxide, with sulfuric acid solution as electrolyte. Its main advantages are stable voltage and low cost; disadvantages include low specific energy (energy stored per kilogram of battery), short service life, and frequent maintenance. 2. Dry-Charged Battery: Its full name is dry-charged lead-acid battery. The main feature is that the negative plate has high electricity storage capacity, capable of retaining charge for two years in completely dry state. 3. Maintenance-Free Battery: Due to structural advantages, maintenance-free batteries consume minimal electrolyte. They also feature shock resistance, high temperature tolerance, and compact size, typically lasting twice as long as conventional batteries.

2

3

Share

What Causes One Electric Car Window to Malfunction?

Car electric window malfunction reasons are as follows: 1. Reason one: The window lift motor is damaged or there is poor contact in the electrical control wiring harness. 2. Reason two: If components overheat for some reason, the motor will enter an overheating protection state, causing the window lift to malfunction. 3. Reason three: The guide rail is blocked or the rubber seal is aged. Information about one-touch window operation is as follows: 1. One-touch window operation: Refers to a system where the car window glass can be controlled to fully open or close with a single button press. 2. Usage: Cars equipped with one-touch window operation have window control switches with two positions. The first position works like a regular electric window. The second position allows the window to automatically fully open or close with a single press and release. With regular electric windows, you need to hold the switch until the window reaches the desired position, then release to stop the movement.

15

3

Share

What is an R-class driver's license?

Types and Functions of Car Window Films

Will the car floor rust if it gets wet?

What are the reasons for a car battery having power but no response when starting?

Is the Car Dashboard Afraid of Sun Exposure?

What is the difference between a 60Ah and 70Ah car battery?

What Causes One Electric Car Window to Malfunction?

What Does a Gasoline Engine Inhale During the Intake Stroke?

How to Close a Car Trunk?

Why doesn't my 12123 show the option for license renewal upon expiration?

How Heavy is a Car Battery?