What Issues Should Be Noted to Prevent Car Fires?

What does the 'R' in tires stand for?

R stands for the word RADIAL, indicating that it is a radial tire. Car tires can be divided into radial tires and bias tires according to their structure. The carcass cords of radial tires are arranged in parallel layers in a radial direction, forming a 90° angle with the circumferential direction of the tire crown centerline. Information about radial tires is as follows: 1. Compared with ordinary bias tires, radial tires have greater elasticity and better wear resistance. 2. They have lower rolling resistance, which can reduce car fuel consumption by about 8%. 3. They have good adhesion, excellent cushioning performance, high load capacity, and are less prone to punctures.

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How to Distinguish Between Dry and Wet Dual Clutch?

The differences between dry and wet dual clutch are as follows: 1. The main difference between dry and wet dual clutch lies in the working environment of their clutch plates: Wet dual clutch plates are immersed in transmission fluid, while dry dual clutch plates directly contact the engine flywheel. 2. Differences in manufacturing cost and power transmission efficiency: Wet dual clutch has a more complex structure, higher manufacturing costs, and lower power transmission efficiency compared to dry dual clutch. 3. Different cooling capabilities: Dry dual clutch transmissions offer faster gear shifting, but they have poor cooling performance, average reliability and durability, and less smooth gear shifting. Although wet dual clutch transmissions do not shift as quickly as dry dual clutch transmissions, they have better cooling performance, higher reliability, and greater durability compared to dry dual clutch transmissions.

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What Causes Three-Way Catalytic Converter Failure?

Three-way catalytic converter failure causes: leaded gasoline, lubricants or additives containing lead, silicon, phosphorus, sealants containing harmful components like lead and silicon, overheating, severe impacts, etc. Below are detailed explanations of the related causes: 1. Leaded gasoline: Tetraethyl lead in leaded gasoline causes significant pollution and harm to the environment and human health. It also deposits on the active surfaces of the oxygen sensor and catalytic converter in the catalytic device, leading to 'lead poisoning' of the oxygen sensor and greatly reducing the purification efficiency of the three-way catalytic converter until it is damaged. Long-term use of leaded gasoline can even clog the honeycomb catalytic converter in the catalytic device with tetraethyl lead. 2. Lubricants or additives containing lead, silicon, or phosphorus: Many people assume that if the exhaust pipe doesn't emit blue smoke during engine operation, no lubricant enters the exhaust system. In reality, even a well-functioning engine burns a certain amount of lubricant that passes through the cylinder walls and PCV valve in the combustion chamber. Therefore, harmful components mixed into the lubricant can also cause the three-way catalytic converter to fail if they come into contact with the catalytic conversion device. 3. Sealants containing harmful components like lead and silicon: Engine repairs often require the use of various sealants. However, if sealants containing the aforementioned harmful components are applied to areas such as the intake manifold gasket or oil pan gasket, they can poison or even disable the three-way catalytic converter. 4. Overheating: The operating temperature of a three-way catalytic converter typically should not exceed 800°C. However, if a cylinder in the engine misfires, the exhaust may contain excessive unburned fuel gases, which can cause the three-way catalytic converter to fail or be damaged due to a significant increase in operating temperature. 5. Severe impacts: Since the core of the catalytic converter is a ceramic element, vehicles equipped with three-way catalytic converters are particularly vulnerable to 'bottoming out.' Severe impacts can shatter the catalytic converter core, rendering it useless.

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How to Determine When Engine Oil Needs Replacement?

Determining whether engine oil needs replacement can be assessed from two aspects. Here are the relevant details: 1. Judge by inspecting the oil quality. First observe its transparency - if the color is clear with slight impurities, it can still be used. If the color turns black and smells acidic, it's time to replace the oil because it has deteriorated and can no longer provide protection. 2. Check the oil's viscosity with your fingers. Dip some oil on your hand and test its viscosity between two fingers. If the oil shows no viscosity at all and feels like water, this indicates the oil has reached its usage limit and needs replacement to ensure proper engine operation.

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What to Do When the Engine Start-Stop Light Keeps Flashing?

The engine start-stop light keeps flashing, possibly due to a faulty clutch switch or damaged battery negative sensor, and requires immediate inspection at a 4S shop. The engine start-stop technology is a system that automatically shuts off the engine when the vehicle comes to a temporary stop (e.g., at a red light) during driving. When using the automatic start-stop system, the following precautions should be noted: 1. Turn off the start-stop in heavy traffic. Stop-and-go traffic not only causes engine vibration but also increases fuel consumption and places a burden on the engine. 2. Turn off the start-stop when going uphill or downhill. 3. Turn off the start-stop when using air conditioning. The vehicle's electrical power may not be sufficient to maintain air conditioning, affecting comfort. 4. Turn off the start-stop when wading through water. Braking while wading may create negative pressure in the exhaust pipe, allowing water to enter. Restarting the engine under such conditions could lead to severe engine damage.

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What does it mean when the oil light turns yellow?

The yellow oil light indicates insufficient oil level. If the vehicle hasn't reached its scheduled maintenance time, it reminds the owner to promptly add engine oil. Insufficient oil typically affects the overall lubrication effectiveness of the engine, especially for components relying on crankshaft splash lubrication, leading to accelerated wear or even damage. Below is relevant information about the yellow oil light: 1. When the engine yellow light comes on, it doesn't necessarily mean low oil level. This light is called the engine malfunction indicator lamp. If it illuminates, it indicates a fault in the engine or its auxiliary components, but specific fault information can only be detected using professional diagnostic equipment. Common causes for the engine malfunction indicator include oxygen sensor failure, knocking, or severe carbon buildup. 2. In most cases, the illumination of the engine malfunction indicator is largely caused by severe carbon deposits. This shouldn't be ignored as engine carbon deposits tend to accumulate in the throttle body and combustion chamber, affecting normal engine operation.

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What Issues Should Be Noted to Prevent Car Fires?

What does the 'R' in tires stand for?

How to Distinguish Between Dry and Wet Dual Clutch?

What Causes Three-Way Catalytic Converter Failure?

How to Determine When Engine Oil Needs Replacement?

What to Do When the Engine Start-Stop Light Keeps Flashing?

What does it mean when the oil light turns yellow?

How many kilometers does a car travel per minute?

What is the fuel consumption of the Beijing BJ40?

Where is the windshield wiper switch located?

What causes engine idle shaking and stalling?