How to Repair a Small Dent on the Car?

How Much Does Electric Vehicle Range Decrease in Winter?

On average, electric vehicle range decreases by 41% in winter. Even without using the air conditioning, the range will still be reduced. Reasons for the decrease: Electric vehicles rely on batteries, and the optimal operating temperature for batteries is around 25 degrees Celsius. Winter temperatures are too low, with some areas in the north even reaching below -30 degrees, causing the battery capacity to drop significantly and fail to meet the demands of the vehicle. Generally, between 0 and 25 degrees, for every degree the temperature drops, the battery capacity decreases by about 1%. The lower the temperature, the harder it is for the battery electrolyte to diffuse, slowing down the chemical reaction rate of the active materials in the electrodes, which in turn causes the battery voltage to drop. Solutions: When charging in winter, charge multiple times in succession. When the battery warms up, you can charge more at once to ensure the battery has sufficient power. Electric vehicles should not remain idle for too long in winter. When the battery discharge falls below 50%, the electrolyte may freeze, making it difficult to start. It is best to start the vehicle intermittently, avoiding excessive battery discharge, and try to keep the battery charge above 50%.

15

4

Share

What is the difference between the internal and external air circulation in a car?

Internal and external air circulation in a car differ in terms of symbols, usage scenarios, and functions. The specific differences are as follows: Different symbols: Internal circulation means the air inside the car flows in a closed loop, represented by an icon of a closed car interior with a circular arrow. External circulation, on the other hand, brings outside air into the car, represented by an icon of an open car with an arrow pointing from the outside into the car. Different functions: Internal circulation refers to the process where the air inside the car is heated or cooled and then recirculated within the car. External circulation involves drawing air from outside the car, heating or cooling it, and then sending it into the car, facilitating gas exchange between the inside and outside of the car. Different scenarios: When turning on the air conditioning for cooling or heating, you can first activate the internal circulation to quickly lower or raise the temperature inside the car. Once the temperature stabilizes, you can switch to external circulation to exchange air with the outside. If the outside air quality is poor, such as in heavy traffic with high exhaust emissions or in underground parking lots with poor air, avoid using external circulation. When driving on highways, do not open the windows; instead, use external circulation. In summary, when the outside air is good and the car feels stuffy, quickly switch to external circulation for fresh air. To control the temperature inside the car, use internal circulation.

1

5

Share

How to Break in a New Car for Better Fuel Efficiency?

Here are detailed methods for breaking in a new car to improve fuel efficiency: 1. Warm-up: Preheating is necessary during cold starts. After parking, engine components lack sufficient lubrication. Proper warm-up helps form an "oil film" between engine parts and other components, reducing abnormal wear during operation. 2. Driving speed: Maintaining appropriate speeds ensures better fuel economy during the break-in period. Most vehicles' optimal fuel-efficient speed range is relatively moderate, typically between 65-90km/h. 3. Maintenance: Regular maintenance is crucial for new cars, especially during the break-in period. Follow the manufacturer's recommendations in the vehicle manual for timely oil changes and chassis inspections. Proper maintenance helps monitor and optimize daily fuel consumption.

19

4

Share

Does Porsche Have an Electric Version?

Porsche does have electric models. Taking the Porsche Taycan as an example, here are the specific details about the Porsche Taycan: 1. Vehicle Positioning: The Porsche Taycan is an electric vehicle introduced by Porsche, with body dimensions of 4850/1990/1300mm and a wheelbase of 2921mm. 2. Powertrain: The Taycan is powered by a single permanent magnet motor, delivering a maximum power of 326/381 horsepower and a maximum torque of 340 N·m. It features rear-wheel drive and an 80kWh battery capacity. It accelerates from 0 to 100 km/h in just 2.8 seconds, with an NEDC range of 500km.

9

0

Share

What is the principle of an aircraft thrust reverser?

Aircraft thrust reversers redirect the expelled engine gases towards the front of the engine, causing the gases to be ejected forward and generating a force opposite to the direction of aircraft flight, known as reverse thrust. The specific working principle is as follows: 1. During normal flight, the clamshell doors are tightly attached to the cascade vanes on both sides of the nozzle, allowing the exhaust gases to flow out of the nozzle to obtain forward thrust. 2. When deceleration is required, the clamshell doors, under the action of hydraulic actuators, block the nozzle passage. The exhaust gases are obstructed by the clamshell doors and are redirected forward at a 45° angle to the axis through the cascade vanes, then ejected diagonally forward through the side exhaust ports, generating a reverse thrust.

13

0

Share

How to Remove Scratches from Car Windshield?

Here are the methods for removing scratches from car windshields: 1. Clean the glass: Use a clean cloth to thoroughly clean the glass, ensuring there are no debris or impurities, and let the glass dry in a suitable environment. 2. Dampen a microfiber cloth: Under warm running water, take a clean, lint-free cloth (it should be as smooth as possible and not rough or shedding fibers). Wring the cloth tightly until no excess water drips. (Any particles on the cloth, including dust or lint, can rub against the glass and cause uneven wear or additional scratches.) 3. Apply toothpaste to the cloth: Squeeze an appropriate amount of toothpaste onto the cloth based on the size of the scratch, adding more if necessary. (It's best to use white, non-gel toothpaste, especially those containing baking soda as an ingredient, as they are most effective for removing scratches.)

2

4

Share

How to Repair a Small Dent on the Car?

How Much Does Electric Vehicle Range Decrease in Winter?

What is the difference between the internal and external air circulation in a car?

How to Break in a New Car for Better Fuel Efficiency?

Does Porsche Have an Electric Version?

What is the principle of an aircraft thrust reverser?

How to Remove Scratches from Car Windshield?

How many kilometers can a 48V12Ah battery run?

What causes BMW X5 idle vibration?

Can a vehicle with expired mortgage be purchased?

Which is more serious: fake license plates or no license plates on motorcycles?