How many points are deducted for not wearing a seat belt in the back seat?

What Are the Causes of Insufficient Fuel Pressure in a Car?

The causes of insufficient fuel pressure in a car are: 1. Wear of the oil seal at the rear end of the fuel pump drive gear shaft or loose pipeline connections, leading to air in the pipeline; 2. Low fuel level in the tank or excessively dirty filter; 3. Wear or jamming of the fuel pump gear end face bearing, resulting in excessive clearance of the fuel pump gear shaft. The method to test fuel pressure is: 1. Turn on the ignition switch without starting the vehicle; 2. Remove the fuel pump relay and use a dedicated jumper wire to connect the fuel pump circuit; 3. After starting the vehicle, connect a fuel pressure gauge to check the fuel pressure value of the engine. The working principle of fuel pressure regulation is: The oil pressure is coordinated by the spring and the vacuum degree of the air chamber. When the oil pressure exceeds the standard value, high-pressure fuel will push the diaphragm upward, opening the ball valve, and excess fuel will flow back to the tank through the return pipe. When the pressure is below the standard value, the spring will press the diaphragm downward to close the ball valve, stopping the return of fuel.

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Is the Bora's engine made of iron or aluminum?

New Bora is equipped with the EA111 engine, which features a cast iron engine block and an aluminum alloy cylinder head. Definition of automobile engine: An automobile engine is the device that provides power for a car, serving as the heart of the vehicle. It determines the car's power, fuel efficiency, stability, and environmental performance. Depending on the power source, automobile engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid systems, among others. Differences between automobile engines: Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines, converting the chemical energy of fuel into the mechanical energy of piston movement to deliver power. Gasoline engines have higher rotational speeds, lighter weight, lower noise levels, easier starting, and lower manufacturing costs. Diesel engines, on the other hand, have higher compression ratios, greater thermal efficiency, and better fuel economy and emission performance compared to gasoline engines.

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Is a tire pressure of 280 too high in summer?

The value is somewhat high. For family cars in summer, the recommended tire pressure is between 230 and 260. Using 280 is not advised for two reasons: firstly, it affects the ride comfort of the vehicle, and secondly, it significantly increases the risk of tire blowouts during high-speed driving. Below is additional information: 1. Effects of high tire pressure: It can affect the vehicle's braking distance, reduce the tire's grip on the road, shorten the tire's lifespan, accelerate tread wear and aging, impair normal driving, increase fuel consumption, and in severe cases, lead to tire blowouts. Excessive tire pressure causes tire deformation, reduces overall elasticity, and increases load. 2. How to check tire pressure: Vehicles equipped with tire pressure monitoring systems can display the pressure on the dashboard or central console. Alternatively, visit a tire repair shop to use professional equipment for inspection. If the pressure is too low, it needs to be replenished; if it's too high, it should be reduced.

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What Causes the Abnormal Noise When Starting an Automatic Transmission Car?

Automatic transmission cars produce a clunking sound when starting due to internal transmission issues and excessively low engine RPM. Internal transmission problems: Excessive wear creates gaps, resulting in play during startup that causes clunking noises. Excessively low engine RPM: Insufficient output torque can cause gear dragging, potentially leading to abnormal noises. During rapid acceleration when engine RPM rises extremely quickly, the transmission may produce an impact when shifting from 1st to 2nd gear. When heavily depressing the accelerator to raise RPM to 5000-6000 or higher, the transmission must suddenly reduce this high RPM to 2000-3000 through gear shifting to stabilize engine speed, creating impact during this process. Maintenance methods: Replace transmission fluid and perform comprehensive transmission maintenance. Additionally, avoid aggressive daily driving to prevent accelerated transmission wear. Another important note: regardless of gear shifting operations, always use the foot brake to completely stop the vehicle first.

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How Long Does It Take for a New Car to Complete the Break-in Period?

Generally, it takes 1000~1500 kilometers. Below is relevant information about the car break-in period: 1. Concept: Break-in is also known as running-in. The car break-in period refers to the initial driving phase of a new car or after a major overhaul, typically 1000~1500 kilometers. This is the essential mileage required to ensure that mechanical components fully contact, frictionally adapt, and settle into their final form. During this period, the car's various parts can adjust and enhance their ability to adapt to the environment, while also wearing down any protrusions on the components. 2. Key Points to Note: Piston rings are usually composed of compression rings and oil rings. As the names suggest, compression rings are used to seal gases (preventing the mixture or exhaust gases in the cylinder from entering the crankcase, thereby avoiding a decrease in engine power and preventing oil contamination), while oil rings are used to seal oil (since the crankshaft flings oil from the crankcase onto the cylinder walls, the oil ring's role is to scrape off this oil), preventing oil from entering the combustion chamber and causing oil burning issues.

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How many kilometers is a one-hour drive?

Driving speed varies, so the distance traveled in one hour also differs. Below is an introduction to driving speed: 1. Introduction: The distance a vehicle travels in a unit of time, referred to as driving speed. The commonly used units are kilometers per hour or meters per second. Vehicle speed is one of the three parameters used to describe traffic flow and holds significant importance in traffic flow theory research. 2. Function: Vehicle speed can also broadly refer to motor vehicle speed. To suit different purposes, vehicle speed is mainly categorized into spot speed, segment speed, and design speed. 3. Legal speed limits: According to the 'Road Traffic Safety Law' and its implementation regulations, on roads without a central dividing line, the speed limit is 40 kilometers per hour; on roads with only one motor vehicle lane in the same direction, the speed limit is 70 kilometers per hour; when entering or exiting non-motorized lanes, passing through railway crossings, sharp curves, narrow roads, narrow bridges, or when making U-turns, turning, or descending steep slopes, the speed limit is 30 kilometers per hour. The maximum speed limit on highways is 120 kilometers per hour.

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How many points are deducted for not wearing a seat belt in the back seat?

What Are the Causes of Insufficient Fuel Pressure in a Car?

Is the Bora's engine made of iron or aluminum?

Is a tire pressure of 280 too high in summer?

What Causes the Abnormal Noise When Starting an Automatic Transmission Car?

How Long Does It Take for a New Car to Complete the Break-in Period?

How many kilometers is a one-hour drive?

What is the Sil80?

Are Three-Cylinder Engines Fuel-Efficient?

What does 'remaining processable 11 points' mean?

What type of transmission is primarily used in automotive gearboxes?