What does 'water vehicle' mean? Can motorcycles be licensed?

Can a new motorcycle with an invoice be driven on the road?

New motorcycles with an invoice cannot be driven on the road. Like cars, motorcycles are also motor vehicles. New motorcycles must have temporary license plates. If driven on the road without temporary license plates, they will be treated as unlicensed vehicles. Motorcycle registration: You must hold the "National Unified Motor Vehicle Sales Invoice" and the certificate of conformity. Other invoices cannot be used for registration. Only holding a store receipt and shipping order number is not sufficient for registration. The "National Unified Motor Vehicle Sales Invoice" comes in four copies, two of which are held by the seller and the buyer, and the other two are used for tax payment and registration. Motorcycle registration process: Documents required for registration: purchase invoice, vehicle certificate of conformity, and the owner's ID card. Drive the motorcycle to the vehicle management office, then fill out the motorcycle pass application form. After filling it out, submit it to the window for review. Once approved, the owner will be asked to push the motorcycle to a safe area to wait for the license plate installation. The motorcycle driven for registration must have sufficient safety, as it will be inspected during the license plate application process. Only after the motorcycle passes the inspection will the owner be issued a motorcycle certificate.

3

5

Share

What Causes a Newly Acquired Car Key to Be Unresponsive?

There are three main reasons why a car key may not respond when pressed. Specific reasons for an unresponsive car key: The car key battery is dead; interference from magnetic fields; the car's anti-theft system has been activated, preventing the car from being unlocked via the key. If the car key battery is dead, remove the mechanical key, locate the gap in the plastic casing, and use the mechanical key to pry open the remote key along the gap. If there is radio interference preventing the remote key from unlocking the door, remove the mechanical key and use the mechanical lock to open the door. If the anti-theft system has been activated, use the mechanical key on the remote key to unlock the door. The mechanical lock on the door is hidden; pry off the outer shell of the door handle with the mechanical key to reveal the hidden mechanical lock. The car's central locking system is in an electronically locked state: Wait for one to two hours for the lock to be released before attempting to unlock again. A remote key allows the user to lock and unlock the car from a distance without inserting the key into the lock. It emits a weak radio wave from the owner's vicinity, which is received by the car's antenna. The electronic control unit (ECU) identifies the signal code, and the system's actuator (motor or electromagnetic coil) executes the locking or unlocking action. The system mainly consists of a transmitter and a receiver.

14

3

Share

What are the three filters in a minor maintenance service?

In a minor maintenance service, the three filters are the oil filter, air filter, and fuel filter. Air Filter: Ensures that the air entering the engine is clean. The air contains suspended dust particles, primarily composed of silicon dioxide, which is harder than metal. Installing an air filter reduces wear on components such as cylinders, pistons, and piston rings. Without an air filter, cylinder wear increases by 7 times, piston wear by 3 times, and piston ring wear by 8 times. Therefore, modern car engines are equipped with air filters at the carburetor (or the intake control device in fuel-injected engines). Fuel Filter: Ensures clean fuel and prevents vapor lock. During storage, transportation, and refueling, gasoline inevitably mixes with impurities and water. These contaminants can enter the fuel supply system and engine cylinders, accelerating wear. Before gasoline reaches the fuel pump, it must be filtered to ensure the proper functioning of the fuel supply system. Oil Filter: Filters engine oil to ensure smooth engine operation, making it the most important of the three filters. During internal combustion engine operation, mechanical impurities such as dust, metal particles, and carbon deposits continuously mix with the oil. Additionally, oxidation from air and combustion byproducts causes the oil to form sludge. This sludge not only accelerates wear on moving parts but can also clog oil passages. To maintain oil cleanliness, engines are equipped with oil filters in the lubrication system.

8

0

Share

Can double white lines be crossed?

Whether double white lines can be crossed depends on the situation. Cases where crossing white lines is allowed: At signalized intersections, U-turns can be made across double white lines as long as there are no signs prohibiting U-turns or left turns. The prerequisite is to avoid pedestrian crossings and wait for the green light before crossing the stop line to make a U-turn. White lines are used to distinguish different lanes in the same direction of traffic. Double white solid lines are placed in road sections to separate lanes in the same direction, prohibiting lane merging or changing lanes. White dashed lines, on the other hand, allow lane merging and changing. Yellow lines can also be seen on roads; both single and double yellow solid lines are prohibited markings. Yellow solid lines are generally placed in the center of the road to separate opposing traffic lanes. Crossing or driving over these lines during travel is illegal. They can also appear on both sides of the road, indicating that temporary parking is not allowed at those locations. Double white lines on the road: Double white solid lines: Placed in road sections to separate lanes in the same direction and prohibit lane changes. Double white dashed lines: Placed at intersections as stop lines for yielding when pedestrian crossings are not marked; placed in road sections as reversible lane lines that change direction over time. White dashed lines alongside white solid lines: Placed in road sections to separate lanes in the same direction, with the white solid line side prohibiting lane changes or crossing.

8

2

Share

Is the Differential Lock Automatically Activated?

The central differential locking function is not automatic. Here is an introduction to the central differential: Vehicles equipped with a central differential lock function allow the driver to manually lock the central differential via a button when encountering difficult terrain. This quickly locks the differential of the spinning wheels, enabling the wheels to receive most of the torque, providing the vehicle with sufficient power to escape the predicament and continue driving. Forced Locking Type: The forced locking differential lock is set on a standard symmetrical bevel gear differential. This type of differential lock has a simple structure, is easy to manufacture, and offers a high torque distribution ratio. However, it is relatively inconvenient to operate, usually requiring the vehicle to stop. Additionally, if the differential lock is engaged too early or disengaged too late, it can lead to a series of issues similar to those without a differential, and the torque distribution becomes unchangeable. High-Friction Self-Locking Type: The high-friction self-locking type includes structures like the friction plate type and the sliding cam type. The friction plate type locks the differential through the frictional torque generated when the friction plates slide relative to each other. This differential lock has a simple structure and operates smoothly, making it most common in passenger cars and light vehicles. The sliding cam type uses the high frictional torque between the sliding block and the cam to lock the differential, significantly improving the vehicle's off-road capability. However, it has a complex structure, high manufacturing requirements, significant wear on friction components, and higher costs. Torsen Type: The Torsen differential is a new type of inter-axle differential widely used in all-wheel-drive passenger cars (such as the Audi TT). It utilizes the basic principle of worm gear transmission with self-locking characteristics. The Torsen differential has a compact structure, a wide and adjustable torque transmission range, making it widely used in the central differential of all-wheel-drive cars and the inter-wheel differential of rear-drive axles. However, due to its automatic locking effect under high-speed torque differences, it is generally not suitable for the inter-wheel differential of front-drive axles. Viscous Coupling Type: Some four-wheel-drive passenger cars also use a viscous coupling as a differential. This new type of differential uses silicone oil as the medium for torque transmission.

7

2

Share

What Causes a Motorcycle Valve to Break and Damage the Piston?

There are seven reasons why a motorcycle valve breaks and damages the piston. Substandard Fuel: Gasoline contains a chemical component called olefins, which are prone to oxidation and form gum deposits. Gasoline with excessively high olefin content can easily lead to carbon buildup on the intake valve and combustion chamber, hindering valve movement. In severe cases, this can cause the valve to stick in the guide at high temperatures, resulting in valve breakage. Non-standard Clearance Between Valve and Valve Guide: If the clearance is too small, the differing thermal expansion coefficients of the valve and guide at high temperatures can cause excessive resistance during valve movement, leading to valve breakage. Conversely, if the clearance is too large, it may also cause the valve to break at high speeds. Quality Issues with the Valve or Valve Guide: Uneven expansion at high temperatures can cause the valve to stick during high-speed operation, resulting in valve breakage. Weakened Valve Spring Tension: Insufficient spring tension may fail to reset the valve quickly during high-speed operation, leading to valve breakage. Detachment of Valve Retainers: If the valve spring tension is too high, the impact force between the valve head and retainers during valve return can cause premature wear, leading to retainer detachment. This may also be due to poor valve quality. Poor Cylinder Head Lubrication: If the lubricating oil quality is poor or the oil supply to the cylinder head is insufficient, lubrication and friction reduction at high temperatures are compromised. Combined with minor carbon deposits and sludge, this can prevent proper valve return, leading to mechanical failures. Excessive Carbon Buildup on Piston or Valve: Several factors can cause excessive carbon buildup, such as poor fuel quality, overly rich air-fuel mixture, or incomplete combustion due to spark plug misfires. Thick carbon deposits can prevent valve closure or hinder movement, resulting in valve breakage.

4

5

Share

What does 'water vehicle' mean? Can motorcycles be licensed?

Can a new motorcycle with an invoice be driven on the road?

What Causes a Newly Acquired Car Key to Be Unresponsive?

What are the three filters in a minor maintenance service?

Can double white lines be crossed?

Is the Differential Lock Automatically Activated?

What Causes a Motorcycle Valve to Break and Damage the Piston?

What are the battery issues of new energy vehicles after 8 years?

Do You Need to Check the Rearview Mirror Frequently While Driving?

Is a small passenger car still inspected once a year after 15 years?

What is the length of a small passenger vehicle in meters?