What Does Mileage Mean?

Will the original car paint crack?

Original car paint will not crack under normal vehicle use and proper maintenance. Causes of car paint cracking: Applying topcoat before the primer is fully dry, air pollution, or excessive paint thickness can lead to early paint film cracking; Using incompatible coatings, such as applying a hard paint film over a long-oil primer, may cause cracking due to lack of elasticity and inconsistent expansion forces between the two paint layers. The following are car paint maintenance options: Waxing: Waxing forms a protective layer on the paint surface, preventing oxidation from harmful external elements, offering UV resistance, high gloss, and being the most affordable option. Glazing: Glazing enhances paint strength, protects against minor scratches from windblown sand, and resists high temperatures and UV rays. Coating: Paint coating is the highest level of paint protection, preventing oxidation while providing multiple benefits including enhanced gloss, acid/alkali resistance, oxidation resistance, and UV protection. Polishing: Polishing removes oxidized paint surfaces, restoring vehicle shine and temporarily renewing the paint to its original state.

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What is the normal temperature range for new energy vehicle motors?

Under rated load conditions, the normal casing temperature of a new energy vehicle motor is approximately 60-70°C. Temperatures exceeding 60-70°C are considered abnormal and can cause damage to the motor. The insulation on the motor's enameled wire may melt, leading to short circuits, while high temperatures can cause permanent magnets to lose their magnetic properties, resulting in motor failure. If the motor frequently overheats beyond the normal temperature range, timely maintenance is required. The primary cause of overheating is internal motor faults. Common causes of internal motor faults include bearing issues and stator deformation. Bearings support rotational speed; once the ball bearing clearance increases, it can cause internal motor scraping, where the stator rubs against the rotor, increasing friction and generating excessive heat. The solution is to replace the bearings with high-quality ones. Some motor manufacturers use low-rigidity stators to reduce costs, which are prone to deformation. When the stator deforms, it deviates from its normal path, leading to uneven force distribution and increased temperature. The solution is to replace the stator with a more rigid one. When the power supply voltage is too high, the motor's back electromotive force, magnetic flux, and flux density all increase. Since iron losses are proportional to the square of the flux density, higher flux density leads to increased iron losses, causing the core to overheat. Additionally, increased magnetic flux results in a sharp rise in the excitation current component, increasing copper losses in the stator windings and causing them to overheat. Therefore, when the power supply voltage exceeds the motor's rated voltage, the motor will overheat.

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What is the speed limit on expressways?

The speed limit on expressways is 60 km/h. Speed limits can be canceled: Although speed limits can be canceled, there is a necessary prerequisite: all drivers must comply with safe driving rules. For example, in Germany, two-thirds of the roads have no speed limits. Although vehicles travel at high speeds, drivers have strong awareness of rules and laws, keeping to their lanes and ensuring safety. Of course, any violation will result in severe penalties. General classification of speed limits: The speed limit on urban main roads is 60 km/h, on urban secondary roads it is 40 km/h, and on ramps and tunnels it ranges from 30 to 40 km/h. However, if there are clear speed limit signs on the road, the signs shall prevail.

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Does a New Car Need to Have Its System Flashed?

For normal household cars, it is not recommended to flash the ECU. Reasons for not recommending: The car's powertrain is matched with the chassis, suspension, brakes, and shock absorbers. If only the power is increased without upgrading other configurations, the car will inevitably develop issues and pose safety hazards. Introduction to ECU: ECU stands for Electronic Control Unit, also known as the onboard computer or vehicle computer. It consists of large-scale integrated circuits such as microcontrollers, memory, input/output interfaces, analog-to-digital converters, and drivers. How the ECU works: After igniting and starting the engine, the ECU begins operation. The central controller retrieves fixed programs from the memory and processes and executes the programs in sequence based on signals sent by various sensors, such as controlling the air-fuel ratio, ignition timing, idle conditions, etc.

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Does installing a 360-degree camera affect the warranty of a new car?

Installing a 360-degree camera does not affect the car's warranty. How the 360-degree camera works: The working principle of the 360-degree panoramic camera is not complicated and can even be considered an enhanced version of the rearview camera function. It uses four ultra-wide-angle lenses distributed around the front, rear, left, and right of the car body to capture real-time images of their respective areas. These images are then processed by an image processing unit for distortion correction, perspective transformation, and image stitching, ultimately displaying a complete real-time 360-degree overhead view on the central control screen. This overhead view provides an intuitive display of the real-time surroundings of the vehicle, enabling safer and more reliable parking. Installation of the 360-degree camera: Installing a 360-degree camera involves adding only four small cameras to the car's exterior. The four cameras are installed at the front of the car, the rear, and the bottom of the two side mirrors. The cameras are compact, aesthetically pleasing, and mostly designed for specific car models, allowing them to blend seamlessly into the vehicle's contours without affecting its overall appearance.

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Why is Shell 5W30 SL grade?

Reasons why Shell 5W30 is SL grade: This engine oil contains higher levels of phosphorus and sulfur, providing better anti-wear performance. Meaning of SL: The 'S' stands for gasoline engine oil, and 'L' represents the oil grade. In alphabetical order, the further the second letter is in the sequence, the higher the quality, offering better protection for the engine. For example, SL grade engine oil performs better than SJ, SH, or SG grades. Meaning of 5W30: 5W30 - 'W' stands for winter, '5W' indicates it can be used at temperatures as low as -25 degrees Celsius, and '30' represents its viscosity at 100 degrees Celsius is 30.

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What Does Mileage Mean?

Will the original car paint crack?

What is the normal temperature range for new energy vehicle motors?

What is the speed limit on expressways?

Does a New Car Need to Have Its System Flashed?

Does installing a 360-degree camera affect the warranty of a new car?

Why is Shell 5W30 SL grade?

After how many kilometers does a motorcycle rear tire need to be replaced?

What are the symptoms of a bad dual-clutch clutch plate?

Will the original car paint crack?

What does the Harley P0051 fault code mean?