What Causes a Car's Air Conditioning to Stop Blowing Air After Running for a While?

What are the differences between National IV, National V, and National VI?

The differences between National IV, National V, and National VI lie in the principles of fuel adoption and emission standards. Below are the detailed explanations: Principles of fuel adoption are different: During the National IV and National V phases, the emission standards for diesel and gasoline vehicles were different; National VI adopts a fuel-neutral principle, meaning the emission limits are the same regardless of the fuel type used. Emission standards are different: Compared to National III, National IV standards reduced nitrogen oxide emissions by 30% for light-duty vehicles and 50% for heavy-duty vehicles; National V standards, based on National IV, further reduced nitrogen oxide emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles; National VI standards, building on National V, reduced particulate matter emissions by 40%, and for heavy-duty diesel vehicles, nitrogen oxides and particulate matter emissions were reduced by 60% compared to the National V phase.

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How Long is the Brake Caliper Warranty?

Automobile brake calipers generally do not have a warranty period. Introduction to brake calipers: They are indispensable chassis braking components in the braking system. Their main function is to push the brake pads, which then rub against the brake drum, reducing the vehicle's speed or bringing it to a complete stop. When the brake pedal is pressed, the master cylinder generates thrust to press hydraulic fluid into the caliper. The piston inside the caliper moves under hydraulic pressure to push the brake pads. Working principle of brake calipers: When the brake is applied, the outlet port opens, and the inlet port closes. Under the pressure of the piston in the pump body, brake fluid is forced out of the oil pipe and flows to each brake caliper to perform the braking function. When the brake pedal is released, the outlet port in the master cylinder closes, and the inlet port opens, allowing the brake fluid to flow back from each brake caliper to the master cylinder, returning to its original state.

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How to Check if a Tire is Run-Flat?

To determine whether a tire is a run-flat, you can use the following methods: 1. Check the sidewall markings—special symbols will follow the tire specifications on the sidewall; 2. Consider the vehicle model—mid-to-high-end models are often equipped with run-flat tires; 3. Examine the tire model—run-flat tires typically have an aspect ratio below 55; 4. Place the tire flat on the ground and stand on it—if the sidewall is hard, it's a run-flat tire. A run-flat tire consists of an outer tire, a standard inner tube, a spare inner tube, a steel rim, a gas generator or air chamber, a pressure sensor, and a control unit. Precautions for using run-flat tires include: 1. Avoid speeding to prevent rubber aging, delamination, or bursting; 2. Use low-pressure tires to improve ride comfort and steering stability, preventing blowouts; 3. Rotate tires regularly to extend their lifespan; 4. Maintain standard tire pressure to avoid excessive wear.

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Is the license number on the driver's license the same as the ID card number?

Is the license number on the driver's license the same as the ID card number_58 Auto The license number on the driver's license is the ID card number, specifically located below the document name on the main page and the auxiliary page of the driver's license. Below is a detailed introduction to the driver's license number: Function of the driver's license number: The driver's license number uses the ID card number, which establishes a certain correlation between the driver's license and the ID card, making it convenient for traffic police to quickly compare the ID card and the driver's license. At the same time, in some cases, the driver's license can serve as personal identification. What to do if the driver's license number is unclear: If the driver's license number and file number become unclear due to damage or staining, you should go to the vehicle management office as soon as possible to apply for a replacement. It is also advisable to avoid driving motor vehicles during this time.

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Should You Apply the Handbrake When Parking an Automatic Transmission Car?

Automatic transmission cars require the use of the handbrake when parking, especially on slopes, to prevent the vehicle from rolling. Below are the relevant details about parking an automatic transmission car: Parking procedure: When parking on level ground with an automatic transmission, follow this sequence: shift to N (Neutral), release the foot brake, apply the handbrake, shift to P (Park), and turn off the engine. When parking on a slope, follow this sequence: shift to N (Neutral), firmly apply the handbrake, release the foot brake, shift to P (Park), and turn off the engine. Precautions when applying the handbrake: The handbrake mechanism is a ratchet system. Pulling it too tightly can cause plastic deformation of the steel wire cable. This deformation is irreversible, which may increase the handbrake's travel distance and also affect its braking performance.

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Why Do New Cars Consume More Fuel?

New cars have higher fuel consumption due to reasons such as insufficient break-in, poor fuel system flow, and excessive vehicle load. During the break-in period, the friction resistance of new components is relatively high, leading to increased fuel consumption. Insufficient Break-in: For a newly purchased car, the engine components have not yet fully broken in, resulting in smaller gaps between parts and greater operational resistance compared to a broken-in engine. Therefore, it's advisable to patiently complete the break-in period and observe if fuel consumption changes after the first maintenance. If fuel consumption remains higher post-break-in, it may indicate dirty fuel injectors or throttle body that require cleaning. Poor Fuel System Flow: Excessive engine carbon buildup is the primary cause of poor fuel system flow, often resulting from using inappropriate fuel in the short term. Excessive Vehicle Load: Avoid driving with excessive weight during the break-in period. A lighter load is better for new cars as heavy loads can cause damage.

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What Causes a Car's Air Conditioning to Stop Blowing Air After Running for a While?

What are the differences between National IV, National V, and National VI?

How Long is the Brake Caliper Warranty?

How to Check if a Tire is Run-Flat?

Is the license number on the driver's license the same as the ID card number?

Should You Apply the Handbrake When Parking an Automatic Transmission Car?

Why Do New Cars Consume More Fuel?

What is the general speed limit for highway driving?

What Are the Types of Car Decoration?

Can a new car with only a temporary license plate but no vehicle license be driven on the road?

Do Sedans Need Mudguards?