Does Running the Air Conditioning Without Turning Off the Engine Damage the Car?

What Causes a Car to Shake While Driving?

Body shaking is mostly caused by wheel imbalance, loose suspension components, excessive steering gear clearance, and other factors that lead to car shaking during driving. Wheel Imbalance: Wheel imbalance is a common issue in many vehicles. During the manufacturing process of tires and rims, it is impossible to ensure perfectly uniform quality, so wheels must undergo dynamic balancing after assembly. Additionally, as tires wear over time, periodic dynamic balancing is necessary. Most manufacturers recommend performing dynamic balancing every 40,000 kilometers. The standard for dynamic balancing is that the imbalance on both the inner and outer sides should be less than or equal to 5 grams, ensuring that the wheels do not shake during high-speed operation. Loose Suspension Components: The chassis suspension consists of various links and support arms, which are connected through ball joints and rubber bushings. Normally, these connections are very tight, but as the ball joints and bushings wear out, the components can become loose, leading to a shaky suspension and causing the car body to shake while driving. Excessive Steering Gear Clearance: The car's steering system uses a rack-and-pinion mechanism to convert the rotational motion of the steering wheel into the swinging motion of the wheels. Over time, wear and tear between the gear and rack can create excessive play, causing the wheels to sway slightly even when the steering wheel is not turned, resulting in a shaky feeling in the car body.

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Do You Need to Press the AC Button When Using the Heater in Winter?

When using the heater in your car during winter, you do not need to press the AC button. The AC button controls the air conditioning compressor, which is used for cooling. Therefore, if you are using the heater inside the car, there is no need to turn on the AC button. In winter, if your car windows fog up, it can drastically reduce visibility for the driver and passengers, making continued driving dangerous. However, if you turn on the AC button while using the heater, it helps keep the interior of the car dry, effectively clearing the fog from the windows. In summer, when using the air conditioning (cooling), you must press the AC button. During summer, when cooling is needed, air enters through the intake and passes through the air conditioning compressor. The compressor cools the air by compressing it before blowing it out. The transformation of normal-temperature air into cool air is entirely dependent on the air conditioning compressor, which is activated by pressing the AC button. When the AC button is pressed, a green indicator light turns on, signaling that the compressor is now operational. If you don't press the AC button when using the air conditioning in summer, the air coming out of the vents will be warm.

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What is the principle of a car refrigerator?

Car refrigerators are divided into two main categories: semiconductor type and compressor type. The working principles of these two types of car refrigerators are quite different. The principle of a semiconductor car refrigerator relies on electronic chips for cooling, while a compressor car refrigerator uses traditional refrigerator technology. Semiconductor car refrigerators are also known as electronic refrigerators. Unlike traditional refrigerators that use refrigerants for cooling, the principle of a semiconductor car refrigerator belongs to electronic physical cooling. This cooling method utilizes the "Peltier Effect," where charge carriers moving in a conductor form an electric current. Since charge carriers are at different energy levels in different materials, when they move from a higher energy level to a lower one, they release excess heat. Conversely, they absorb heat from the surroundings. This is why semiconductor car refrigerators can both cool and heat. The advantages of semiconductor car refrigerators include small size, portability, zero pollution, the ability to both cool and heat, and low noise. The disadvantages are low cooling efficiency and cooling performance being affected by environmental conditions. On the other hand, compressor car refrigerators are a branch of traditional household refrigerators. Their working principle involves a motor providing mechanical energy to the refrigeration system through a compressor. The advantages of this type of refrigerator are undoubtedly good cooling performance, large capacity, and the ability to freeze. The disadvantages are large size, heavy weight, and inconvenience for car use.

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How is the driving experience calculated when combining D and C1 licenses?

The calculation starts from the date when the first driver's license was obtained. For example, if you first obtained a C1 driver's license and later added a D license through an upgrade, then the driving experience is calculated based on the C1 license. If you obtained the D license first and then upgraded to C1, the driving experience is calculated from the date the D license was obtained. In other words, the driving experience is calculated based on the date of the first type of driver's license you obtained. C1 Driver's License: The C1 driver's license is one of the codes for motor vehicle driver's licenses. The C1 license allows driving small and mini passenger vehicles, light and mini cargo vehicles, as well as light, small, and mini special-purpose vehicles. Small passenger vehicles must have a seating capacity of 9 or fewer people. Age Requirements: The minimum age to apply for a C1 driver's license is 18 years old, with no upper age limit. However, applicants aged 70 or older must pass tests on memory, judgment, and reaction abilities.

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What is the shelf life of a car fire extinguisher?

Car fire extinguishers typically have a shelf life of one year. Most vehicle-mounted fire extinguishers are dry powder extinguishers, which use liquid carbon dioxide or nitrogen as the propellant to discharge the dry powder extinguishing agent for fire suppression. Precautions for car fire extinguishers: Regardless of the specifications, fire extinguishers should be inspected annually. It is necessary to check whether the gas inside the extinguisher is leaking and whether the dry powder is clumping. Otherwise, an expired fire extinguisher may fail to discharge the dry powder or have a significantly reduced discharge time, affecting its normal use. The fire extinguisher should be placed within easy reach of the driver and securely fixed to avoid accidents. When using the fire extinguisher, do not spray it randomly at the surface of the flames; instead, aim at the base of the flames and ensure that all flames are completely extinguished before moving the extinguisher away. Storage location note: It is recommended to place the fire extinguisher within easy reach. A portable aerosol fire extinguisher can be kept in the cabin for emergency fire suppression. Dry powder fire extinguishers can be stored either horizontally or vertically. However, carbon dioxide fire extinguishers and water-based fire extinguishers need to be kept upright. These three types of fire extinguishers are all stored-pressure types, while aerosol fire extinguishers do not have the above concerns.

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Can alcohol be used for disinfection inside a car?

Alcohol can be used for disinfection by spraying inside a car, but it should be noted that alcohol is a flammable and explosive product. If alcohol is sprayed for disinfection, it should be wiped dry immediately, and the car windows should be opened in a well-ventilated environment. It is recommended to spray on the surface of objects and avoid spraying on hidden or hard-to-reach areas inside the car. To achieve the disinfection and sterilization effect, car owners need to use medical alcohol with a concentration of 75%. If the alcohol concentration is lower, it will not achieve the desired disinfection effect. Alcohol molecules have strong penetrating power, allowing them to pass through the bacterial membrane, enter the interior of the bacteria, and coagulate the proteins that form the basis of bacterial life, thereby killing the bacteria. Before using 75% alcohol to disinfect the car, the owner should turn off the engine and ensure the car is in a non-operational state. At the same time, it is important to maintain ventilation inside the car. Since the flash point of 75% alcohol is around 22 degrees Celsius and alcohol evaporates quickly, car owners must ensure there are no open flames nearby and pay attention to the amount of alcohol used to avoid excessive alcohol concentration in the air, which could lead to an explosion.

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Does Running the Air Conditioning Without Turning Off the Engine Damage the Car?

What Causes a Car to Shake While Driving?

Do You Need to Press the AC Button When Using the Heater in Winter?

What is the principle of a car refrigerator?

How is the driving experience calculated when combining D and C1 licenses?

What is the shelf life of a car fire extinguisher?

Can alcohol be used for disinfection inside a car?

How to Change License Plates for Registered Vehicles?

How Does an Automotive Relay Work?

Does Car Air Conditioning Consume Fuel or Electricity?

What is a Vehicle Internet System?