What is the function of a cylinder gasket?

How many more years can a 10-year-old City be driven?

Depending on the frequency of use by different car owners, some owners use their vehicles more frequently in daily life, accumulating 70,000 to 80,000 kilometers in just a few years. This leads to accelerated wear and tear of car parts, and a 10-year-old vehicle may already meet the mileage standard for guided scrapping. On the other hand, some owners only use their cars for commuting or grocery shopping, with the mileage not even reaching tens of thousands of kilometers over a decade. If the car is well-maintained, it could potentially last up to 20 years. Below is some relevant information: 1. Reasons for scrapping: Most older cars are not retired because the engine is damaged and can no longer run, but rather due to severe oxidation of the exterior paint, increasing minor issues, complicated annual inspections, rising fuel consumption, and certain safety hazards. 2. Relevant regulations: Generally, for household sedans, a 15-year age is a threshold. The latest traffic laws have set relevant regulations regarding the usage period of vehicles. For non-commercial vehicles exceeding 15 years, owners are required to undergo a semi-annual inspection at the vehicle management office. Compared to the previous mandatory scrapping age, as long as the vehicle can pass the annual inspection, it can still be driven legally on the road, provided it meets the local emission standards.

4

Share

What is the technique for maintaining a 30cm margin in Subject 3?

Look at the inner side of the solid white line on the roadside, align the center line of the car's front with the inner side of the solid white line. When you feel that the center line and the inner side of the solid white line intersect, straighten the steering wheel, press the clutch and brake to stop, and the position will be exactly 30cm. Here are some additional information: 1. Subject 1: Road traffic safety laws, regulations, and related knowledge test subjects. The structure of the test question bank and basic question types are formulated by the Ministry of Public Security, and provincial public security traffic management departments establish their own test question banks based on local conditions. 2. Subject 2: Field driving skills test subjects, including test items such as reversing into a garage, stopping and starting on a slope, turning at a right angle, driving on a curve, and parallel parking. 3. Subject 3: Road driving skills test subjects, including basic test items such as preparation before starting, driving in a straight line, changing lanes, passing intersections, parking by the roadside, passing pedestrian crossings, passing school zones, passing bus stops, meeting vehicles, overtaking, making U-turns, and driving at night. 4. Subject 4: Safe and civilized driving knowledge, test items: knowledge related to safe and civilized driving.

11

5

Share

What is the purpose of the metal piece outside the brake pad?

The metal piece outside the brake pad serves as a warning indicator. Relevant information about brake pads is as follows: 1. Classification: Automobile brake pads can be categorized by type into brake pads for disc brakes, brake shoes for drum brakes, and brake linings for large trucks. Brake pads are mainly divided into the following categories: metal brake pads and ceramic-carbon brake pads. Metal brake pads are further divided into low-metallic brake pads and semi-metallic brake pads, with ceramic brake pads classified under low-metallic. Ceramic-carbon brake pads are used in conjunction with ceramic-carbon brake discs. 2. Braking principle: The working principle of braking mainly relies on friction. By utilizing the friction between the brake pad and the brake disc (or drum), as well as between the tires and the ground, the kinetic energy of the moving vehicle is converted into heat energy through friction, thereby stopping the car. A good and efficient braking system must provide stable, sufficient, and controllable braking force, along with excellent hydraulic transmission and heat dissipation capabilities. This ensures that the force applied by the driver on the brake pedal is effectively transmitted to the master cylinder and sub-cylinders, while avoiding hydraulic failure and brake fade caused by excessive heat. 3. Service life: The replacement of brake pads depends on how long the pads have been in use on the vehicle. Generally, brake pads need to be replaced after traveling more than 80,000 kilometers. However, if a grinding noise is heard from the wheels, the brake pads should be replaced regardless of the mileage.

9

3

Share

Can Brake Pads Still Be Used After Rusting?

Brake pads can still be used after rusting. It is normal for brake pads to rust. Precautions after replacing brake pads: 1. Observation: The thickness of a new brake pad (excluding the steel backing plate) is generally around 10mm. When the visible thickness is reduced to about 1/3 of the original (approximately 3mm), the owner should increase the frequency of self-inspection and be ready to replace them. Typically, replacement is required when the thickness is less than about 1mm. Each brake pad has raised indicators on both sides, which are about 2-3mm thick. This is also the minimum thickness limit for brake pad replacement. 2. Listen for sounds: If a metallic scraping sound is heard when lightly applying the brakes, it is recommended to replace the brake pads immediately. This indicates that the limit indicators on both sides of the brake pads are directly rubbing against the brake disc, meaning the pads have exceeded their wear limit. In such cases, the brake discs should also be inspected during replacement, as they may already be damaged. Even after replacing the brake pads, the noise may persist, and in severe cases, the brake discs may need to be replaced. 3. Feel the braking force: As the brake pads wear thin, braking performance is affected. A deeper press on the brake pedal is required to achieve the same braking effect that was previously achieved with a light press. The initial braking effect is noticeably weaker. If the brakes feel soft or less effective, it is time to check if the brake pads need replacement.

16

5

Share

Should the 2021 Levin use 92 or 95 octane gasoline?

Both 92 and 95 octane gasoline can be used, but it is best to consistently use one type. There is not much difference between 92 and 95 octane gasoline in essence; the only difference lies in the octane rating. 95 octane gasoline consists of 95% isooctane and 5% n-heptane, while 92 octane gasoline consists of 92% isooctane and 8% n-heptane. Below are some related points: 1. Gasoline octane rating: The gasoline octane ratings that car owners see actually refer to the ratio of the gasoline's anti-knock properties compared to standard gasoline. For example, 95 octane gasoline indicates that its anti-knock properties are the same as those of standard gasoline containing 95% isooctane and 5% n-heptane. This does not mean that the 95 octane gasoline used in daily life contains 95% octane. 2. Higher octane does not mean better quality: Additionally, a higher octane rating only indicates better anti-knock properties and does not mean the gasoline is of higher quality. There is also no experimental proof that it improves the cleaning properties of gasoline. Moreover, the vehicle manuals specify which type of gasoline is suitable for each model. It is best for car owners not to mix different types of gasoline to avoid causing engine knocking.

16

1

Share

What is the engine model of the Chevrolet Equinox?

The 1.5T engine model for the Chevrolet Equinox 535T is LYX. Below is a detailed introduction to the Chevrolet Equinox engine: 1. Power: The domestic Equinox is equipped with two turbocharged gasoline engines, a 1.5T and a 2.0T. The 1.5T engine has a maximum power of 127 kW and a maximum torque of 275 Nm, paired with a 6-speed automatic transmission. The 2.0T engine has a maximum power of 188 kW and a maximum torque of 352 Nm, matched with a 9-speed automatic transmission. 2. The car engine is the device that provides power to the vehicle, acting as the heart of the car, determining its power, fuel economy, and environmental performance. Depending on the power source, car engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid systems. 3. Common gasoline and diesel engines are both reciprocating piston internal combustion engines, converting the chemical energy of fuel into mechanical energy for piston movement, which then outputs power. Gasoline engines have high rotational speeds, are lightweight, produce less noise, are easy to start, and have lower manufacturing costs. Diesel engines have higher compression ratios, better thermal efficiency, and superior fuel economy and emission performance compared to gasoline engines.

15

0

Share

What is the function of a cylinder gasket?

How many more years can a 10-year-old City be driven?

What is the technique for maintaining a 30cm margin in Subject 3?

What is the purpose of the metal piece outside the brake pad?

Can Brake Pads Still Be Used After Rusting?

Should the 2021 Levin use 92 or 95 octane gasoline?

What is the engine model of the Chevrolet Equinox?

Does the Tesla sunroof need tinting?

How to Adjust the Mileage on a Volkswagen Jetta?

What are the functions of all buttons in the 2021 Tiguan?

What is the three-wire principle of the CRV compressor?