What sound does a gearbox make when the gears grind?

What are the tips for the reverse parking test in Subject 2?

Reverse parking operation tips: After getting into the car, the driver should first adjust the seat and rearview mirrors, fasten the seat belt, then shift the car into reverse gear, release the parking brake lever, and start reversing at idle speed while observing the garage through the right rear window. When the black edge of the right rear window aligns with the right boundary line of the garage, turn the steering wheel steadily to the right to the limit position. After the car enters the garage, the driver should look back at the left rearview mirror. When the entire left boundary line of the garage appears, immediately straighten the steering wheel. When the left door handle is level with the bottom line of the garage as seen in the left rearview mirror, stop the car immediately. Points deduction items for reverse parking are as follows: Not following the prescribed route or sequence: deduct 100 points; vehicle body crossing the line: deduct 100 points; failing to park in the garage: deduct 100 points; stopping midway: deduct 100 points. The full score for Subject 2 is 100 points, with evaluation criteria set for failing, deducting 20 points, deducting 10 points, and deducting 5 points. The test is passed if the following conditions are met: ① For large passenger vehicles, tractors, city buses, medium passenger vehicles, and large trucks, a score of 90 or above is required; ② For other vehicle types, a score of 80 or above is required.

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How to Exit the Parking Space Without Scraping the Adjacent Vehicle?

Turning the steering wheel to full lock should be fine. There's a reference point: when you see the wheel, maintain at least 3 meters from it; when you see the bumper, keep 1 meter; and when you see the license plate, it's about... you can try it out~ When you reverse into the parking space, you might often encounter the phenomenon where the left side is too wide while the right side is too narrow. This indicates that you turned the steering wheel to full lock too early at the starting line. The correct timing is to turn the steering wheel to full lock right at the moment when the left rearview mirror aligns with the starting line. This is the first point. The second point is, after reversing into the parking space and noticing the right side is too narrow, you should adjust the steering wheel to the left (adjust towards the wider side), and vice versa. When the rear of the car is centered, immediately straighten the steering wheel. This way, the issue of one side being wider than the other won't occur. Exiting the parking space is similar to making a sharp turn. If there's still space behind before exiting, you can reverse further to position the car as close to the right side of the parking space as possible. Then, shift into drive and move forward. When you feel that half of the car body has passed the parking space line (the driver has already exited the parking space line), you can turn the steering wheel to full lock left and observe the distance between your car body and other vehicles through the left rearview mirror. If this distance is too close, straighten the steering wheel and move forward until the rear wheels pass, then turn the steering wheel to full lock again. If you cannot continue forward due to obstacles ahead, straighten the steering wheel, shift into reverse, and back up. Then, turn the steering wheel to the right to increase the distance and repeat this process to adjust the car's position for a successful exit. Especially in parking lots, if there's a vehicle in front of the parking space exit, here's how to avoid scraping the front car when exiting: when you see the upper edge of the rear bumper of the front car, the distance is approximately 1m. When you see the lower edge of the rear bumper, the distance is about 2m. When you see the lower edge of the rear tire, the distance is roughly 3m.

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What is the function of a car condenser?

Car condenser's function is to dissipate heat and cool down the high-temperature and high-pressure refrigerant vapor discharged by the compressor, condensing it into a high-pressure liquid refrigerant. It can cool and liquefy the high-pressure, high-temperature gaseous refrigerant delivered from the compressor. The condenser is a component that continuously compresses the refrigerant from gas to liquid, which is a process of condensation and also a heat dissipation process. More information about car condensers is as follows: 1. The condenser is a component of the refrigeration system, belonging to a type of heat exchanger. It can transform gas into liquid and quickly transfer the heat in the tubes to the air near the tubes. 2. The working principle of the condenser: The refrigerant enters the evaporator, where the pressure decreases, changing from high-pressure gas to low-pressure gas. This process absorbs heat, so the surface temperature of the evaporator is very low. With the help of a fan, cold air can be blown out. The condenser cools the high-pressure, high-temperature refrigerant from the compressor into high-pressure, low-temperature refrigerant. Then, it is vaporized through the capillary tube and sent to the evaporator for evaporation. 3. In car air conditioning systems, the condenser and evaporator are collectively referred to as heat exchangers. The performance of the heat exchanger directly affects the refrigeration performance of the car air conditioning system. They consume a large amount of metal materials, have a large volume, and their mass accounts for 50% to 70% of the total mass of the car air conditioning unit. The space they occupy directly affects the effective volume of the car, making their arrangement very difficult. Therefore, using high-efficiency heat exchangers is extremely important. The condenser and evaporator in the car air conditioning system must match the compressor and also be compatible with the throttle expansion mechanism. The working state of the condenser and evaporator directly affects the capacity (cooling capacity) of the refrigeration system, the power consumption of the compressor, and the overall economy of the air conditioning unit.

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Is the DS7 Engine Domestic or Imported?

The engine of the DS7 is domestically produced, assembled by Changan PSA (Peugeot Citroën). In 2021, Citroën relaunched the DS brand. Also in 2021, Changan PSA was established. The DS7 uses the 5G06 engine model, with a maximum horsepower of 180 HP, a maximum power output of 133 KW, a maximum power speed of 5500 rpm, and a peak torque of 250 Nm. For daily maintenance of the DS7 engine, the following methods can be used: Use lubricating oil of the appropriate quality grade. For gasoline engines, select SD--SF grade gasoline engine oil based on the additional devices in the intake and exhaust systems and usage conditions; for diesel engines, choose CB--CD grade diesel engine oil according to mechanical load, with the selection standard not lower than the manufacturer's requirements. Regularly change the engine oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, performance deteriorates, leading to various engine problems. To avoid malfunctions, change the oil regularly based on usage conditions and maintain an appropriate oil level. When oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is clogged and oil cannot pass through, the filter may burst or the safety valve may open, allowing oil to bypass through the bypass valve, carrying contaminants back to the lubrication areas, accelerating engine wear and increasing internal contamination. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. Small amounts remain suspended in the oil, while larger amounts precipitate, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use radiator cleaner to clean the radiator. Removing rust and scale not only ensures the engine operates properly but also extends the overall lifespan of the radiator and engine.

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What does a car night vision system mean?

Car night vision systems primarily utilize thermal imaging technology, also known as infrared imaging technology. The principle is that all objects emit heat, with different temperatures resulting in varying heat emissions. Humans, animals, and moving vehicles emit more heat compared to their surroundings. The night vision system collects this information and converts it into visible images, clearly presenting objects that would otherwise be hard to see at night, thereby enhancing nighttime driving safety. The car night vision system acts as an all-weather electronic eye, capturing everything on the road and roadside during rain, snow, or heavy fog conditions, significantly improving driving safety.

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Why does the car air conditioner's airflow decrease after prolonged use?

There are several possible reasons why the airflow of a car air conditioner decreases after prolonged use: 1. Blower issues: The blower may have a short circuit or overheat. It is recommended to visit a car 4S shop for repair, as weak airflow not only reduces cooling efficiency but also consumes more energy. 2. Condenser blockage: This can cause a sudden decrease in airflow, requiring immediate cleaning or replacement of the filter. 3. Damaged air duct fan: If the air duct cannot open properly, it will result in reduced airflow. 4. Dirty air filter: A clogged filter obstructs airflow, allowing only partial air to pass through.

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What sound does a gearbox make when the gears grind?

What are the tips for the reverse parking test in Subject 2?

How to Exit the Parking Space Without Scraping the Adjacent Vehicle?

What is the function of a car condenser?

Is the DS7 Engine Domestic or Imported?

What does a car night vision system mean?

Why does the car air conditioner's airflow decrease after prolonged use?

How to Adjust the Headlight Height of Chevrolet Cruze?

Why is the Volkswagen Tacqua so cheap?

What documents are needed to activate ETC?

What does a gear with an exclamation mark on the dashboard mean?