What to Do If Road Construction Misleads into Wrong-Way Driving?

Is Automotive Urea Harmful to Humans?

Under normal circumstances, automotive urea is not harmful to humans (if it comes into contact with the skin, simply rinse it off with plenty of soapy water or clean water, but be sure to avoid contact with eyes or ingestion). However, under high-temperature conditions, automotive urea may release ammonia gas, which can have corrosive and irritating effects on human skin tissue. Prolonged exposure to ammonia gas may lead to symptoms such as skin pigmentation or ulcers. Below is relevant information: 1. Function of automotive urea: Automotive urea can catalyze the reduction of nitrogen oxides in diesel vehicle exhaust into harmless nitrogen (N2) and water in the Selective Catalytic Reduction (SCR) system. 2. Composition of automotive urea: Automotive urea consists of 32.5% high-purity urea and 67.5% deionized water. 3. Working process of automotive urea in the SCR system: The SCR is a closed-loop injection system. When exhaust gases exit the engine combustion chamber, an electric pump draws an adequate amount of urea solution from the urea tank as instructed by the electronic control unit. The urea solution is mixed and atomized with compressed air and then evenly injected into the exhaust through the injection pipeline via the urea nozzle. At this point, the urea solution rapidly decomposes under high temperature and simultaneously undergoes a catalytic reduction reaction with NO, ultimately producing harmless N2 and water for discharge.

17

1

Share

How to Determine if the Charcoal Canister Purge Solenoid Valve is Good or Bad?

Methods to determine the condition of the charcoal canister purge solenoid valve are as follows: 1. Unplug the solenoid valve connector: If the suction stops, it indicates the solenoid valve is functioning properly. If suction continues, it means the solenoid valve is stuck in the open position. 2. Start the engine: Let it idle, then disconnect the tube connected to the fuel tank. You should feel suction at the canister's connector at a frequency of about two to three times per second. If there is no suction, it indicates the solenoid valve is stuck in the closed position. Below is an introduction to the charcoal canister purge solenoid valve: 1. Definition: The charcoal canister purge solenoid valve is a device installed in vehicles to reduce air pollution caused by fuel vapor emissions and improve fuel efficiency. When the vehicle starts, the solenoid valve opens, releasing the adsorbed fuel vapor into the intake manifold for combustion in the engine. 2. Function: The charcoal canister collects and stores fuel vapors. The canister installed in the vehicle is actually an assembly, with its shell typically made of plastic and filled internally with activated carbon particles that adsorb vapors. The top is equipped with a purge control valve to regulate the amount of fuel vapor and air entering the intake manifold, as well as a filter to purify the fuel vapors.

4

1

Share

How to Check the Wheels During Parallel Parking?

Methods for checking the wheels during parallel parking: 1. Left side: Simply look forward along the left edge of the steering wheel. If the line you follow aligns with the yellow or white line, it indicates that the wheel is on the marking. 2. Right side: First, look at the right edge of the steering wheel, then extend 15 centimeters to the right from the right edge of the steering wheel and look forward. The rest is the same as the left side. Below are additional tips: 1. Distance: The most critical aspect of parallel parking is the distance between the car body and the edge of the parking space, as this distance can be observed through the right rearview mirror to determine the parking position and the timing for reversing. 2. Too wide: If the distance is too wide, it will cause the car to swing too much when reversing. Even if the rear wheels can enter the space, the remaining distance makes it difficult to straighten the car. 3. Too narrow: If the distance is too narrow, when reversing into the space, the front right corner of the car will be too close to the car in front, making it easy to scrape when straightening the wheels, or the rear of the car becomes a hazard if avoiding the front right corner. Therefore, this distance should not be too wide or too narrow; 30cm is the most suitable distance.

5

3

Share

What are the differences between the Mercedes-Benz A35 and A45?

The differences between the Mercedes-Benz A35 and A45 are: 1. Different body dimensions: The length, width, and height of the Mercedes-Benz A35 are 4637mm, 1796mm, and 1422mm respectively; while those of the Mercedes-Benz A45 are 4367mm, 1780mm, and 1417mm. 2. Different engines: The 2.0-liter turbocharged engine of the Mercedes-Benz A35 has a maximum power of 225kW; whereas the 2.0-liter turbocharged engine of the Mercedes-Benz A45 has a maximum power of 285kW. The maximum power speed of the A35's engine is 5800 rpm, and the maximum torque speed is between 3000 to 4000 rpm. This engine is equipped with direct fuel injection technology, uses an aluminum alloy cylinder head and block, and is paired with a 7-speed dual-clutch transmission. The maximum power speed of the A45's engine is 6500 rpm, and the maximum torque speed is between 4750 to 5000 rpm. This engine is equipped with hybrid injection technology, uses an aluminum alloy cylinder head and block, and is paired with an 8-speed dual-clutch transmission.

20

2

Share

Can the Great Wall Fengjun 5 be turned off while it is self-cleaning?

Great Wall Fengjun 5 can be turned off while it is self-cleaning. The self-cleaning function of the car is controlled by the computer, and turning off the car will not hinder the operation of the self-cleaning function. After the car self-cleans, it can effectively reduce the pollution of particulate matter in the exhaust emissions to the air and improve the cleanliness of the air. The time for car self-cleaning: There is no specific requirement for the time of car self-cleaning, which needs to be determined according to the use of the car and the driving environment. Self-cleaning is also divided into manual and automatic. Automatic cleaning vehicles will have active prompts, and manual cleaning once every 15,000 to 20,000 kilometers is more reasonable. If the engine shakes while driving, it needs to be cleaned and self-cleaned. The operation method of car self-cleaning: Turn on the ignition switch, connect the power supply, and press and hold the DPF regeneration switch behind the steering wheel until the dashboard prompts to start the vehicle and idle, then start the vehicle. The engine speed will automatically maintain at 2000 rpm until the dashboard shows that the self-cleaning is completed, and then turn off the car.

3

5

Share

How to reset the maintenance light on Audi A6?

Here is the method to reset the maintenance light on Audi A6: 1. First, enter the vehicle option on the main page and select settings and services. 2. Then click to enter the maintenance cycle submenu interface and select reset oil change cycle. Here are some related information about vehicle maintenance: 1. The internal parts of the vehicle will gradually wear out as the driving time increases. To ensure the normal operation of the car, the manufacturer has set up some reminder indicator lights. After reaching a certain mileage, it is necessary to replace the parts in time. After successful replacement, the car maintenance light needs to be reset. 2. The function of the maintenance light is to record the mileage of some important parts, like a timer, to remind the car owner and maintenance staff. If the relevant parts are replaced without resetting the maintenance light, it will not affect the performance of the vehicle, but it will cause trouble for the next replacement of car parts, as the exact usage time of the new parts cannot be known. 3. Generally, during vehicle maintenance, the maintenance personnel will first check the lights. Check whether the front lights are working normally and whether the rear lights are working normally. The next step is to open the engine compartment. Check whether the various liquid levels in the engine compartment are normal, then lift the vehicle to check the tires, etc. Finally, perform a computer detection and reset.

1

4

Share

What to Do If Road Construction Misleads into Wrong-Way Driving?

Is Automotive Urea Harmful to Humans?

How to Determine if the Charcoal Canister Purge Solenoid Valve is Good or Bad?

How to Check the Wheels During Parallel Parking?

What are the differences between the Mercedes-Benz A35 and A45?

Can the Great Wall Fengjun 5 be turned off while it is self-cleaning?

How to reset the maintenance light on Audi A6?

How to Open the Front Hood of a Volvo S90?

Is There Any Impact If the Electric Vehicle Charger Is Not Unplugged After Full Charge?

How to Check the Production Date of Car Tires CmD?

What is the width of a single traffic lane in meters?