What to Replace During the First Car Maintenance?

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 to Do When a Tire Gets a Cut?

Tire cut solutions are as follows: 1. If the cut is very shallow and does not penetrate, it generally has no impact. Tires are quite thick, so minor scratches are usually not a problem. 2. If the cut is on the sidewall of the tire, it is recommended to replace the tire promptly. The sidewall is much thinner, and when driving over bumps or uphill, the compressed air inside can exert pressure on the weakened area, increasing the risk of a blowout. 3. If you plan to drive on the highway or take a long trip soon, regardless of the depth of the cut, it's best to have it inspected at a repair shop to ensure safety.

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How to Turn Off the Radio in a Sagitar?

Sagitar radio shutdown method: The FM/AM button in the upper left corner of the Volkswagen Sagitar's dashboard screen is the radio power button. To turn off the radio, simply press this switch button by hand, and the radio will be deactivated. If you wish to turn the radio back on, locate the same radio power button and press it again to activate the radio screen. The Sagitar is a joint-venture A+ class sedan brand under FAW-Volkswagen, with its predecessor being the fifth-generation Volkswagen Jetta from Germany, positioned as a German high-performance sedan. The Sagitar measures 4753mm in length, 1800mm in width, and 1462mm in height, with a wheelbase of 2731mm.

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What to Replace During the First Car Maintenance?

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?

What to Do When a Tire Gets a Cut?

How to Turn Off the Radio in a Sagitar?

What documents are needed to activate ETC?

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

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

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