Which engine oil produces less noise?

What is the working principle of a car engine?

Working principle of a car engine: It generates kinetic energy by burning fuel inside the cylinder, driving the piston in the engine cylinder to reciprocate. This movement drives the connecting rod attached to the piston and the crank connected to the connecting rod, performing a reciprocating circular motion around the crankshaft center, thereby outputting power. Intake stroke: The piston moves downward in the cylinder, the valve opens, and air and fuel are drawn in; Compression stroke: The piston moves upward, compressing the mixture of air and fuel, which is then ignited by the spark plug; Power stroke: The compressed air-fuel mixture ignites and expands, pushing the piston downward, and the piston rod drives the connecting rod to rotate; Exhaust stroke: The piston is pushed downward by the expanding gas, and after reaching the bottom, the movement of the piston in another cylinder drives the piston upward, while the exhaust valve opens to expel the exhaust gas.

3

1

Share

What does eject mean?

eject refers to the action of ejecting a CD, meaning that when you press this button, the CD inside will automatically pop out. Typically, a car control panel also includes an insert button for loading CDs, a play button, a pause button, an eject button, a stop button, and several other functional buttons. The reasons why a car CD player fails to read discs are as follows: Severely scratched disc: If the scratches on the disc are too severe, the optical sensor of the car CD player cannot read the information on the disc, resulting in failure to read the disc, disc jamming, or even system crashes; Incorrect disc format: Discs can come in various formats such as CD, VCD, and DVD. If the disc format is incompatible with the car CD player, it may fail to read the disc or eject it. Generally, car CD players cannot recognize VCDs and DVDs.

1

Share

Why Do Car Tires Come Off During Collisions?

Car tires come off during collisions for the following reasons: Loose screws causing tire detachment: There are numerous cases of accidents caused by tire detachment while driving, especially on highways. When a tire unexpectedly detaches at high speeds, it continues to roll "blindly" on the road with considerable kinetic energy, posing a significant risk to following vehicles that may not have enough time to avoid it, potentially leading to traffic accidents. Severe overloading and harsh working conditions: Some dump trucks are severely overloaded, and most are used in construction projects. Due to severely uneven ground and heavy loads, the excessive force on a tire during bumpy rides can cause screws to break and detach. In most cases, the fracture of steel rim screws is accompanied by a clear snapping sound, making it relatively easy to detect tire detachment.

10

0

Share

What are the penalties for occupying the emergency lane?

Penalties for occupying the emergency lane: If a motor vehicle occupies the emergency lane under non-emergency circumstances, a fine will be imposed and 6 points will be deducted from the driver's license. Vehicle malfunction issues: When a driver encounters a sudden vehicle malfunction while driving—such as a flat tire, brake failure, running out of fuel, etc., which makes it impossible to continue normal driving—the vehicle can be moved into the emergency lane. However, it is important to remember that issues like getting lost and using a phone to set up navigation do not qualify as vehicle malfunctions. Driver sudden illness or physical discomfort: In cases where the driver suddenly falls ill (e.g., fainting, cardiovascular or cerebrovascular diseases, etc.) during driving and can no longer continue driving normally, the vehicle can be moved into the emergency lane, and the driver should call 120 to wait for medical personnel to arrive. Of course, fatigue driving does not fall under this category, meaning that if a driver enters the emergency lane due to fatigue driving, they will still be penalized with fines and point deductions.

6

0

Share

Can a tire repaired with tire sealant be used long-term?

Tire sealant can repair minor leaks caused by slight damage, but it may disrupt wheel balance, and some types are corrosive. It is advisable to clean it as soon as possible when conditions permit. The function and principle of tire sealant are as follows: Function of tire sealant: Tire sealant is an emergency tire repair product used when a tire is punctured and loses air, and there is no immediate access to repair services. Its advantages lie in its simplicity and speed—no need to replace the spare tire or use a jack. It simultaneously repairs the tire and inflates it, allowing the vehicle to be driven normally to a repair shop afterward. Principle of tire sealant: Tire sealant is a synthetic polymer compound, appearing as a white foamy liquid. The sealant is stored in a compressed air canister. When used, it is injected into the tire through the valve stem, and the pressure from the compressed canister simultaneously inflates the tire. As the vehicle is driven, the sealant spreads evenly along the inner surface of the tire due to centrifugal force, forming a sealing film that repairs the puncture.

11

1

Share

Under What Circumstances Should Car Tires Be Replaced?

Car tires should be replaced under the following circumstances: Tire damage due to running flat must be replaced: Sometimes, after a tire is damaged and promptly repaired, driving while underinflated may cause the tread or sidewall to be crushed and damaged. In such cases, do not attempt to repair it again to avoid potential hazards. Tires eroded by chemicals must be replaced: If the vehicle accidentally drives over a road surface contaminated with chemical substances, the rubber-made tires can be easily corroded by these materials. In such situations, do not attempt to repair them; immediate replacement is recommended.

4

2

Share

Which engine oil produces less noise?

What is the working principle of a car engine?

What does eject mean?

Why Do Car Tires Come Off During Collisions?

What are the penalties for occupying the emergency lane?

Can a tire repaired with tire sealant be used long-term?

Under What Circumstances Should Car Tires Be Replaced?

What does TC mean when displayed in the car?

How to Read the Digital Tire Pressure Gauge on a Car Air Pump?

How to Replace Wiper Blades?

The Function of Diesel Exhaust Fluid (DEF)?