What is the maximum speed of a motorcycle?

What are the Three Electric Systems in New Energy Vehicles?

New energy vehicles' three electric systems refer to the battery, motor, and electronic control. New energy vehicles are those that use unconventional vehicle fuels as power sources (or conventional vehicle fuels with new onboard power devices), integrating advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles, new technologies, and novel structures. Detailed explanation of the three electric systems in new energy vehicles: Battery: The battery is an industry related to chemistry, mechanical engineering, and electronic control. The key component of a battery is the cell, with the most critical materials being the positive and negative electrodes, separator, and electrolyte. Well-known positive electrode materials include lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, ternary, and high-nickel ternary. Electric Drive: The electric drive consists of three parts: transmission mechanism, motor, and inverter. Currently, both domestic and international electric vehicles use single-speed reduction transmissions, meaning no clutch or gearbox. In the future, electric vehicle manufacturers will increase the complexity of transmission mechanisms while reducing the demand for motors and motor resistors, thereby improving performance and reducing costs. Electronic Control: The motor and electronic control systems in new energy vehicles replace the functions of traditional engines (transmissions), and their performance directly determines key performance indicators such as climbing ability, acceleration, and top speed of electric vehicles. Additionally, electronic control systems face relatively complex working conditions: they need to handle frequent starts and stops, acceleration and deceleration, require high torque at low speeds or when climbing, and low torque at high speeds, with a wide speed range. Hybrid vehicles also need to manage special functions such as motor starting, motor power generation, and braking energy recovery.

13

5

Share

Does the 10-day period after failing Subject 2 include the day of the test?

Subject 2 failing the 10-day period does not include the day of the test, the calculation time starts from the next day after failing. Retake rules: If you fail any subject test once, you can retake it on the spot once, all subjects are eligible, and no additional fees will be charged. If you do not participate in the retake or still fail the retake, the test will be terminated. The retake process for Subject 2 is as follows: students who fail the Subject 2 test need to drive the car to the end of the test, then the test center staff will park the test car at the starting point of the test and adjust the computer, and the candidate will retake the test. The Subject 2 test requires students to master the basic driving operation essentials and have the basic ability to control the vehicle; proficiently master the basic methods of driving on the site and internal roads, have the ability to reasonably use vehicle control components and correctly control the spatial position of the vehicle, and be able to accurately control the driving, speed and route of the vehicle. Within the validity period of the study driving certificate, the number of appointments for the Subject 2 and Subject 3 road driving skills tests shall not exceed five times. If the fifth appointment test is still not passed, the results of other subjects that have passed the test will be invalidated.

5

1

Share

What are the reasons for the poor cooling effect of the BMW X1?

BMW X1's poor air conditioning cooling effect may be due to insufficient refrigerant in the air conditioning system, which leads to poor cooling performance. You can check whether components such as the pipelines in the air conditioning system, the air conditioning pump, the condenser, and the evaporator are damaged, causing refrigerant leakage. The following are the functions of a car air conditioning system: 1. Temperature regulation: This is the main function of car air conditioning. In summer, the cooling system produces cold air to lower the temperature inside the cabin; in winter, except for large commercial vehicles that use independent combustion heaters for heating, other vehicles generally use the residual heat of the car for heating. 2. Humidity regulation: Humidity greatly affects the comfort of passengers in the car. The humidity inside the cabin should generally be maintained between 30% and 70%. Ordinary car air conditioning systems do not have the function of regulating cabin humidity, which can only be achieved by using ventilation devices or advanced luxury cars equipped with integrated heating and cooling air conditioning systems. 3. Airflow regulation: The speed and direction of airflow significantly affect human comfort. If the air blows directly, the speed should be limited to a certain range when the temperature is appropriate. The speed can be adjusted appropriately based on passengers' living environment, age, health condition, and cold or heat habits. 4. Air purification: The quality of air inside the cabin is an important guarantee of comfort.

12

4

Share

Where is the Fog Light Switch Located?

The fog light switch is located on the light control lever behind the steering wheel. Rotate the light control lever to turn it on. Fog lights are installed at the front and rear of the vehicle to illuminate the road and provide safety warnings during rainy or foggy weather, improving visibility for the driver and other road users. They are divided into front fog lights and rear fog lights. Other car lights and their functions include: 1. Headlights: Used to illuminate the road and objects ahead, ensuring driving safety; 2. Reverse lights: Installed at the rear of the vehicle to illuminate the road behind and inform other vehicles and pedestrians that the vehicle is reversing or preparing to reverse; 3. License plate lights: Mounted above the vehicle's license plate to illuminate the license plate.

8

5

Share

What are the five driving modes of the Mercedes-Benz GLE?

The Mercedes-Benz GLE generally has five driving modes, which are: E mode, also known as ECO, the economy mode; C mode, also known as Comfort, the comfort mode; S mode, also known as Sport, the sport mode; S+ mode, also known as Sport+, the extreme sport mode; and I mode, also known as Individual, the personalized mode. Below is a related introduction to the Mercedes-Benz GLE450: 1. Interior: The interior atmosphere of the Mercedes-Benz GLE450 exudes a more luxurious feel, and the relatively simple design of the functional buttons also makes operation more straightforward. The steering wheel of the new car integrates controls for audio, phone, and the trip computer. The overall visual effect inside the Mercedes-Benz GLE450 aligns with the style of the dashboard, providing endless luxury enjoyment for drivers and passengers, showcasing the high-end, grand, and elegant demeanor of Mercedes-Benz. 2. Powertrain: The GLE450 is equipped with a 3.0T twin-turbocharged V6 direct-injection engine with different tuning options. The engine of the GLE450 can deliver a maximum power output of 245 kW at 5250 rpm, while maintaining a peak torque of 480 N·m between 1600-4000 rpm. The engine is paired with the 7G-TRONIC-PLUS enhanced 9-speed automatic transmission.

7

5

Share

How to Check the Vehicle Purchase Date?

Directly check the vehicle's VIN (Vehicle Identification Number). The VIN contains information about the vehicle manufacturer, year, model, body type and code, engine code, and assembly location. Correctly interpreting the VIN is crucial for accurately identifying the vehicle model and conducting proper diagnosis and repairs. The first part identifies the vehicle manufacturer, the first digit identifies the country/region of origin, the second digit identifies the vehicle manufacturer, and the third digit identifies the manufacturer's internal division.

5

Share

What is the maximum speed of a motorcycle?

What are the Three Electric Systems in New Energy Vehicles?

Does the 10-day period after failing Subject 2 include the day of the test?

What are the reasons for the poor cooling effect of the BMW X1?

Where is the Fog Light Switch Located?

What are the five driving modes of the Mercedes-Benz GLE?

How to Check the Vehicle Purchase Date?

What does coolant level low mean?

What Causes Stalling While Practicing Driving?

Where should the steering wheel align with the dashed line in Subject 2?

What Causes a Wuling Hongguang to Suddenly Stall While Driving?