How is carbon deposit formed?

What Does the Semicircular Mark Mean?

The semicircular mark is a distance confirmation line. Related introduction: 1. Description: White parallel thick solid lines, used to provide drivers with a reference for maintaining a safe driving distance, used in conjunction with distance confirmation signs. They are installed in sections where overtaking frequently occurs, accidents are prone to happen, or other necessary areas. The function of the highway distance confirmation marking is to remind drivers to maintain a safe distance from the vehicle in front when seeing this marking, to avoid traffic accidents. 2. Extension: The white zigzag distance confirmation line has a total width of 300cm, with line widths of 40cm or 45cm. Starting from the confirmation base point at 0m, one line is set every 5 meters, with two lines forming a group, spaced 50m apart, repeated in five groups. Multiple groups can also be set up on-site as needed.

5

3

Share

What are the brands of China VI vehicle urea?

China VI vehicle urea brands include Kelas and Kunlun Star. The origin and current status of vehicle urea: As environmental protection departments in various countries have proposed further reductions in nitrogen oxide pollutants emitted by diesel engines (commonly known as the Euro IV standard in China), engine manufacturers began adopting SCR technology to meet environmental requirements. Diesel exhaust fluid (commonly referred to as vehicle urea or automotive environmental urea in China) is a consumable essential for SCR technology. In fact, Europe implemented this policy as early as 2006, where diesel exhaust fluid is called AdBlue, with major representatives including BP. Usage of vehicle urea: Vehicles are equipped with a dedicated urea tank where the urea is stored. Urea is consumed as long as the vehicle is running, so it must be replenished promptly. Generally, about 4 liters of urea are consumed per 100 liters of diesel, though this varies depending on engine displacement, model, manufacturer, road conditions, and load. Usage methods and precautions for vehicle urea: Regularly check the urea solution level in the urea tank and replenish it in time. The usage ratio of vehicle urea solution is 4%-6% of diesel consumption. Estimate the required urea solution based on your trip and carry sufficient barrel urea if necessary. When refilling vehicle urea solution, use a dedicated filling pipe to prevent contamination. After filling, tighten the urea tank cap to avoid pollutants from the air entering, which could cause urea deterioration or crystallization. Vehicle urea solution is alkaline and somewhat corrosive. Avoid contact with metals (except stainless steel), as these materials can react with trace ammonia in the urea solution, generating compounds that affect SCR performance.

5

1

Share

Is Anhui Gasoline Ethanol Gasoline?

Not all gasoline in Anhui is ethanol gasoline. Related information: 1. The difference between ethanol gasoline and regular gasoline: Ethanol gasoline is gasoline blended with ethanol, with varying proportions in different countries. Ethanol gasoline is distinguished from regular gasoline by the letter E before the octane number. For example, regular 93# gasoline is labeled as E93# for ethanol gasoline. Internationally, E10 is commonly used to denote ethanol gasoline with 10% ethanol content, while E20 and E85 represent ethanol gasoline with 20% and 85% ethanol content, respectively. 2. Disadvantages of ethanol gasoline: Lower heat value than regular gasoline, resulting in reduced power. It is prone to deterioration, with a general shelf life of about 20 days. It easily absorbs moisture, leading to separation where water and ethanol settle at the bottom, causing abnormal engine operation. It also causes swelling of rubber components in fuel lines and affects fuel pump level sensors.

12

2

Share

What is the Basic Principle of Car Movement?

The basic principle of car movement is that the torque from the engine is transmitted through the drivetrain to apply a driving torque on the drive wheels, attempting to make them rotate. Below are some key points to note for car movement: 1. Normal roads: There is no specific requirement for the gear; you can drive normally by keeping the car in D (Drive) mode. 2. Parking: When the engine stops, shift the gear to P (Park) to indicate the car is no longer in use. Some cars require shifting to P to remove the key. 3. Reversing: After the car stops moving forward, shift to R (Reverse) and gently release the brake to move backward. 4. Waiting or driving in traffic: You can shift to N (Neutral). 5. Highways or overtaking: You can shift to S (Sport) mode. S mode is the car's sport setting, allowing free gear changes like D mode. It is also useful for climbing hills, as it provides maximum torque output and acceleration.

6

5

Share

What's the matter with maintenance-free battery not charging?

Maintenance-free battery not charging may be due to internal disconnection or short-circuit damage. Maintenance-free batteries cannot be refilled with liquid as they lack refill ports. If the battery shows poor charge retention or fails to hold charge after charging, replacement is the only option. For maintenance-free batteries, adding electrolyte is not recommended as it disrupts internal mechanisms - the proper approach is regular charging. Two solutions: 1. Use a smart charger with activation mode. 2. Charge by connecting it in parallel with another charged battery. Additional details: 1. Maintenance-free batteries produce minimal gas during normal charging, feature strong overcharge resistance, low internal resistance, excellent cold-start performance, and longer lifespan than conventional batteries. 2. They require no distilled water refills during service life and need no supplemental charging when the charging system functions properly, though electrolyte specific gravity should be checked during maintenance.

12

0

Share

Can I get my car inspected without an ID card?

An ID card is not required for the annual inspection, so you can have your car inspected without one. Here are some details about the annual inspection: 1. For the annual inspection, you only need to bring your vehicle license and compulsory traffic insurance policy. 2. Before the annual inspection, any traffic violations must be settled; otherwise, the inspection cannot be passed. 3. During the inspection, your car needs to be driven onto the inspection line where professionals and specialized equipment will examine the vehicle. 4. The inspection includes checks on the car's appearance, exhaust emissions, chassis, braking system, and lighting system. 5. When checking the lighting system, special attention is paid to the brake lights, reverse lights, and turn signals. 6. If the car's appearance has been modified, it must be restored to its original condition before the inspection; otherwise, it will not pass. If the annual inspection is overdue and you are caught driving without it, you may face fines and penalty points.

11

3

Share

How is carbon deposit formed?

What Does the Semicircular Mark Mean?

What are the brands of China VI vehicle urea?

Is Anhui Gasoline Ethanol Gasoline?

What is the Basic Principle of Car Movement?

What's the matter with maintenance-free battery not charging?

Can I get my car inspected without an ID card?

What Causes Squeaky Brakes in a New Car?

When to Use Sport Mode?

Do You Need to Wait for the Engine Coolant Temperature to Rise Before Turning on the AC in Summer?

What should you do when turning in a manual transmission car?