Is the Subject 4 Exam Available on Saturdays and Sundays?

In which year was China 5 implemented?

China 5, the fifth-stage national motor vehicle emission standard, was implemented nationwide from January 1, 2017. The emission control level of the China 5 standard is equivalent to the fifth-stage emission standard implemented in Europe. The European Union has been enforcing it since 2009, with stricter limits on motor vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles compared to the China 4 standard. More details are as follows: 1. From China I to China IV, each upgrade in the standard reduces single-vehicle pollution by 30% to 50%. Additionally, starting from April 1, 2016, all imported, sold, and registered light gasoline, light diesel passenger vehicles, and heavy-duty diesel vehicles (only for public transportation, sanitation, and postal purposes) in the Beijing-Tianjin-Hebei region must comply with the China 5 emission standard. 2. The motor vehicle pollutant emission standards are formulated to implement environmental protection laws, reduce and prevent pollution from vehicle exhaust, protect the ecological environment, and ensure human health. 3. Compared to the China 4 standard, the China 5 standard reduces harmful gas emissions such as nitrogen oxides by 43% for heavy-duty vehicles and by 25% for new standard light-duty vehicles, significantly improving the environment and benefiting everyone's health.

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What is the fuel consumption per 100 kilometers for a 1.6L engine?

For a 1.6L displacement family sedan, a fuel consumption of around 8L per 100 kilometers is considered normal, while a consumption of approximately 7L per 100 kilometers is considered fuel-efficient. For a 1.8L displacement family sedan, a fuel consumption of around 9L per 100 kilometers is considered normal, while a consumption of approximately 8L per 100 kilometers is considered fuel-efficient. Below is an introduction to fuel consumption per 100 kilometers: 1. Theoretical calculation of fuel consumption per 100 kilometers: Generally, the fuel consumption per 100 kilometers provided by manufacturers is a theoretical value. It refers to the value measured by the dynamometer installed on the vehicle chassis under objective environmental conditions, converted into speed parameters, and then calculated at a specified speed to derive the theoretical experimental fuel consumption per 100 kilometers for the model. 2. Practical calculation of fuel consumption per 100 kilometers: In practice, the method to calculate fuel consumption per 100 kilometers is as follows: X/100=50/600, where X is the actual fuel consumption per 100 kilometers being calculated, 50 on the right side of the equation refers to 50L of fuel consumption, and 600 refers to the vehicle traveling 600 kilometers. Simply put, the vehicle consumes 50L of fuel over 600 kilometers. Solving the equation: X is approximately 8.33, so the actual fuel consumption per 100 kilometers for this vehicle is about 8.33L.

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What is the difference between 2.0t and 2.0l?

The differences between 2.0t and 2.0l are as follows: 1. Different engines: 2.0l refers to a vehicle equipped with a 2.0L displacement naturally aspirated engine; while 2.0t refers to a vehicle equipped with a 2.0L displacement turbocharged engine. 2. Different power performance: The power output of 2.0l is relatively smooth, with slower acceleration; while 2.0t has a larger air intake, resulting in faster acceleration within 100 kilometers, but relatively higher fuel consumption. 3. Different stability performance: The naturally aspirated engine is more stable during power output, and acceleration does not produce a strong sense of push-back due to speed, making it overall smoother. However, the 2.0T turbocharged engine tends to be more aggressive, and its stability is inferior to the naturally aspirated engine due to the turbocharger. 4. Different maintenance costs: It should be noted that the 2.0T turbocharged engine is more troublesome in terms of later maintenance. Both types of engines may consume oil, but the turbocharged engine is more obvious in this regard and has higher fuel consumption. Therefore, the maintenance cost of the turbocharged engine is also higher.

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What does pressure loss mean? Does it affect driving?

Automotive pressure loss refers to abnormal tire pressure. Generally, the tire pressure monitoring system will only alert the driver when the tire pressure drops to the minimum pressure limit. However, if there is no inflation equipment available, the vehicle can still be driven to the nearest repair shop or 4S store for inflation. Tire Pressure Monitoring: Tire pressure monitoring can currently be divided into two main types: direct and indirect. Regardless of the type, the tire pressure monitoring system presents the tire pressure in specific numbers or states to the driver through the combination instrument. It also alerts the driver when the tire pressure is too high or too low, or when the tire temperature is excessively high. Impact of Tire Pressure on Vehicle Driving: If the tire pressure is too high, the contact area between the tire tread and the ground decreases, which affects braking performance. It can also cause abnormal bumps during driving, affecting driving comfort. Additionally, the wear on the tire tread will be abnormally concentrated in the middle. If the tire pressure is too low, the contact area between the tire tread and the ground increases, leading to higher rolling resistance and increased fuel consumption. The wear on the tire tread will also be abnormally concentrated on both sides. In severe cases, it can cause the tire to develop standing waves, directly increasing the risk of a blowout.

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How to Effectively Extend the Service Life of Tires?

The service life of car tires is approximately 5 years or 80,000 kilometers. Detailed methods to extend the service life of tires are as follows: 1. It is recommended to rotate the tire positions every 10,000 to 20,000 kilometers, as the front tires wear more severely than the rear tires. Rotating the front and rear tires ensures more even wear. 2. Pay attention to checking tire pressure and keep it around 2.2-2.5. In winter, temperature drops can cause tire pressure to decrease, so it is advisable to inflate the tires promptly during winter. 3. Try to park the vehicle in a shaded area to reduce the damage caused by ultraviolet rays from the sun to the tire rubber.

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Can a cut in the tire be repaired?

Tires with significant damage have a low safety factor and should be replaced; repair is not recommended. The following situations also require immediate tire replacement: 1. Deformation of the bead or tread. 2. Long-term low-pressure driving causing excessive tire compression. 3. The tire has been punctured and repaired more than four times. 4. The tire has been corroded by chemicals. Additional information about tires is as follows: 1. The specific replacement cycle for tires depends on their usage, but the service life should not exceed six years. 2. When replacing tires, use tires of the same size, speed rating, and load capacity as the original tires.

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Is the Subject 4 Exam Available on Saturdays and Sundays?

In which year was China 5 implemented?

What is the fuel consumption per 100 kilometers for a 1.6L engine?

What is the difference between 2.0t and 2.0l?

What does pressure loss mean? Does it affect driving?

How to Effectively Extend the Service Life of Tires?

Can a cut in the tire be repaired?

What type of suspension does the SAIC HS use?

How to Replace the Battery in a Zotye Damai X5 Key?

Why Does an Automatic Transmission Car Shake When Starting?

How to Deal with Severe Engine Shaking?