What is the difference between internal circulation and external circulation?

What is the difference between paint protection film and ceramic coating?

The differences between paint protection film and ceramic coating are as follows: 1. Different materials and functions: (1) Paint protection film is a high-performance new environmentally friendly film, which not only has excellent toughness to effectively mitigate minor daily scratches and perform self-repair, but also isolates the car paint from the air, providing protection against acid rain, oxidation (yellowing of the paint), and UV rays. (2) Ceramic coating forms a thin crystalline layer on the paint surface through the action of high-molecular polymers. It not only enhances the gloss of the car paint but also offers resistance to scratches, ease of cleaning, protection against extreme cold, and anti-static properties. 2. Different application processes: (1) Applying paint protection film is relatively simpler compared to ceramic coating; ceramic coating requires higher technical skills and better environmental conditions. (2) Ceramic coating generally takes about 2-3 days to complete, whereas applying paint protection film only requires a thorough cleaning of the car body before using a heat gun to adhere the film tightly, completing the process in just 1 day.

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Does the Sagitar have independent suspension?

The rear suspension of the new Sagitar is an independent suspension, specifically a multi-link independent suspension. The new Sagitar is a compact sedan featuring a completely redesigned exterior and interior. It is equipped with two engine options: a 1.2-liter turbocharged engine and a 1.4-liter turbocharged engine. Below are the detailed specifications: 1. The 1.2-liter turbocharged engine delivers 116 horsepower and a maximum torque of 175 Nm. This engine reaches its peak power output at 5000-6000 rpm and its maximum torque at 1500-4500 rpm. It features direct fuel injection technology and utilizes an aluminum alloy cylinder head and block. This engine is paired with either a 5-speed manual transmission or a 7-speed dual-clutch transmission. 2. The 1.4-liter turbocharged engine produces 150 horsepower and a maximum torque of 250 Nm, achieving peak power at 5000-6000 rpm and maximum torque at 1750-3000 rpm. It also employs direct fuel injection and an aluminum alloy cylinder head and block. This engine is exclusively matched with a 7-speed dual-clutch transmission. The dual-clutch transmission offers rapid gear shifts and high transmission efficiency, making it particularly suitable for pairing with small-displacement turbocharged engines.

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How to Determine the Position of Wheels for Beginner Drivers

Here is a detailed introduction for beginner drivers on how to determine the position of wheels: 1. Determining the left wheel position: The driver should sit in a proper posture and look straight ahead. When the connection point between the left wiper and the car body aligns with the junction of the left lane white line and the car hood, the left wheel is already on the dividing line. 2. Determining the right wheel position: Since the driver's position is on the left, the method for predicting the right wheel position is slightly different from the left. When the right lane white line aligns with the center of the engine hood, the vehicle is basically on the line. 3. Judging whether the width is passable: The driver should have a rough judgment of the road width and slow down when the road is narrow.

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What is the measured ground clearance of the Q7?

The minimum ground clearance of the Audi Q7 is 201mm. Here are the relevant details: 1. Generally, the minimum ground clearance of a sedan is usually not less than 110mm and not more than 150mm. From the characteristics of sedans, if the ground clearance exceeds 130mm, the sedan can handle various road surfaces more easily, but the body may become unstable at high speeds. A smaller ground clearance (generally below 11cm) improves high-speed performance but reduces off-road capability. 2. The Audi Q7 is equipped with the Audi family's newly tuned air suspension system, which automatically adjusts the ground clearance while driving, meeting the needs of owners who desire both off-road capability and stability. When driving on regular roads, the Q7 provides a ground clearance of 210mm. If the speed remains above 180 km/h for more than 20 seconds, the ground clearance will automatically adjust to 170mm, lowering the vehicle's height to reduce the center of gravity and improve driving stability.

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How to Deal with Carbon Deposits in Cars?

There are several methods to clean carbon deposits in cars: 1. Intravenous cleaning: Hang a bottle-shaped tool above the engine, pour cleaning agent into it, and then introduce it into the engine through a conduit to clean carbon deposits. If the engine has severe carbon deposits, this method may cause blockage or damage to the catalytic converter system. 2. Machine cleaning: Inject cleaning agent into a machine, pressurize it into the combustion chamber, allow the cleaning agent to react with and dissolve the carbon deposits, and then extract the waste liquid. This method is quite effective for severe carbon deposits and does not require disassembling the engine, but it is costly, and the engine oil needs to be replaced after cleaning. 3. Engine disassembly cleaning: This is the most effective method. The entire engine is disassembled, and cleaning agents, ultrasonic methods, etc., are used to completely and thoroughly remove carbon deposits from the components. However, it can be seen that engine disassembly cleaning requires a lot of time and effort.

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What is the suitable tire pressure for winter snow tires?

The suitable tire pressure for winter snow tires is 2.6 bar. The tire pressure difference between snow tires and normal tires is not significant. Whether in summer or winter, the tire pressure remains the same as long as it is kept within the normal range. Below is an introduction to snow tires: 1. Snow tires are specifically designed and manufactured for winter snow conditions. When driving in hot weather, they differ from summer tires in terms of handling, comfort, noise, and speed limits. Therefore, when temperatures rise in spring and the road surface becomes dry, it is advisable to switch back to summer tires. 2. Winter tires are made of very soft materials, and their tread grooves are wider and closer together. This provides better grip and anti-skid performance on snow and ice-covered roads, ensuring the car's traction in low-temperature conditions and optimizing its performance. 3. Snow tires are equipped with metal studs, which enhance the tire's grip on snow or ice-covered surfaces.

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What is the difference between internal circulation and external circulation?

What is the difference between paint protection film and ceramic coating?

Does the Sagitar have independent suspension?

How to Determine the Position of Wheels for Beginner Drivers

What is the measured ground clearance of the Q7?

How to Deal with Carbon Deposits in Cars?

What is the suitable tire pressure for winter snow tires?

What is the 911 car?

Where is the cabin air filter located in the Citroën C4?

What Items Are Included in Vehicle Annual Inspection?

Where is the Fit's Cabin Air Filter Located?