Why does the car still roll when in neutral gear?

Where is the automotive urea added?

Automotive urea is added into a dedicated urea storage tank, which is located near the fuel tank. Automotive urea is a colorless, transparent liquid stored in the urea tank. When the sensor detects nitrogen oxides in the exhaust pipe, it automatically sprays atomized automotive urea to mix with the nitrogen oxides. A redox reaction then occurs in the SCR reaction tank, producing and discharging non-polluting nitrogen and water. The reason for adding urea to the vehicle is: The harmful substances in diesel vehicle exhaust are mainly nitrogen oxides and particulates. While particulate emissions can be reduced through technical means inside the engine, the exhaust primarily contains nitrogen oxides. By injecting urea into the exhaust after-treatment device, the urea decomposes into ammonia at high temperatures. Under the action of a catalyst, it reacts with nitrogen oxides to produce harmless nitrogen and water.

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What does D plus/minus shift mean?

D plus/minus shift refers to the manual mode in an automatic transmission. The function of D plus/minus shift is: after engaging the D gear, pull the gear lever sideways to enter manual driving mode. At this time, pushing the gear lever forward or backward can achieve manual shifting function, increasing driving pleasure, and it can also be used in special road conditions. D gear is the forward driving gear. Other gears of the vehicle include: 1. P is the parking gear and starting gear, used for long-term parking; 2. R is the reverse gear, used for reversing; 3. N is the neutral gear, used for short-term parking; 4. L is the low gear, used when going downhill or uphill; 5. S is the sports mode, which can provide stronger power when overtaking; 6. M is the manual mode, which can be adjusted for manual driving.

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How to Deal with a Stone Stuck in the Brake Disc?

The method to handle a stone stuck in the brake disc is: accelerate the car and then brake hard, then reverse and brake hard again, repeating this cycle several times to resolve the issue. The main components of a car's braking system include the vacuum booster pump, master brake cylinder, brake caliper, brake pads, and brake disc. Methods to determine if the brake disc needs replacement are: 1. Brake pads and brake discs wear relatively; after replacing the brake pads 2 to 3 times, pay attention to checking the brake disc; 2. If you hear a rustling sound when braking, check if the brake disc needs replacement; 3. If grooves or small pits appear on the brake disc, and the measured depth reaches about 1.5mm, it is necessary to go to a repair shop or 4S store to check the brake disc.

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Why Does the Engine Burn Oil?

The main reasons why an engine burns oil are excessive piston clearance, abnormal operation of the valve oil seals, and driving habits. Below are the causes of oil burning: 1. The phenomenon of engine oil burning occurs when oil enters the engine's combustion chamber and participates in the combustion of the air-fuel mixture. After the engine burns oil, the car's exhaust pipe emits blue smoke, which is a relatively common occurrence. 2. Over prolonged use, cars inevitably develop carbon deposits, which can accumulate on the piston rings. If not cleaned for a long time, these deposits can widen the gap between the piston rings and the cylinder wall, allowing oil to flow into the combustion chamber. The oil then participates in combustion, and in severe cases, it can even lead to engine knocking. Therefore, regular carbon cleaning is crucial and can be considered a preventive measure against oil burning.

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Is it normal for water to drip under the car when the air conditioning is on?

It is normal for water to drip under the car when the air conditioning is on. Here are the specific reasons for water leakage under the car when the air conditioning is running: 1. Evaporator drainage: Because the car's cooling system is equipped with an evaporator inside the dashboard, when the air conditioning is on (A/C button ON), the surface temperature of the evaporator is very low. The moisture in the hot air inside the car will condense on the surface of the evaporator's heat-absorbing fins, and the water droplets are collected by the plastic housing of the evaporator and discharged outside the car through a pipe. 2. Compressor condensation: Sometimes, the exterior of the compressor (low-pressure area) installed in the engine compartment will condense moisture from the air and drip onto the ground. 3. Lack of insulation foam: If the low-pressure pipe is not covered with insulation foam, the surface of the pipe can easily condense moisture from the air, and water droplets often condense and drip from the lowest point of the pipe.

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What is the difference between SL and SN engine oils?

Engine oils SL and SN refer to the quality grades of engine oils. The most obvious difference between SN and SL oils is the grade difference, which also corresponds to variations in various aspects of the oil's performance. Below are the differences between SN and SL engine oils: 1. Differences in antioxidant performance and wear resistance under high-temperature and high-speed operating conditions: For example, in the same TEOST-MHT high-temperature deposit test, the requirement for SN is no more than 35 milligrams. SN has higher high-temperature detergency than SL, making it particularly suitable for turbocharged engines. SN-grade oil offers better oxidation stability and wear resistance. Since SN oil contains lower levels of phosphorus and zinc compared to SL oil, it reduces wear on the three-way catalytic converter. 2. Differences in environmental protection levels: In the quality grade, the later the letter, the higher the environmental protection level. Therefore, "SL" oil has a lower environmental protection level than "SN," with "SP" being the highest environmental protection level. 3. Differences in quality levels: SG, SH, SJ, SL, SM, SN, so SN has a higher quality than SL.

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Why does the car still roll when in neutral gear?

Where is the automotive urea added?

What does D plus/minus shift mean?

How to Deal with a Stone Stuck in the Brake Disc?

Why Does the Engine Burn Oil?

Is it normal for water to drip under the car when the air conditioning is on?

What is the difference between SL and SN engine oils?

What is the maximum speed of the Wuling Hongguang MINIEV?

What brand is STRATA tires?

What does res mean?

What does setup mean in a car?