What is the voice system for the Subject 3 driving test?

Why is valve clearance necessary in the valve train?

Here are the reasons why valve clearance is necessary in the valve train: 1. Prevent gas leakage: If there is no clearance when the valve train components expand due to heat, it may push the valve open when it should be closed, causing combustion chamber leakage. 2. Affect power output: Excessive valve clearance will result in insufficient valve opening, affecting air intake; insufficient clearance will prevent the valve from closing tightly, causing leakage and affecting engine power. 3. Adjustment method: Adjust the adjusting screw at the rear of the valve rocker arm, measuring the clearance between the rocker arm head and the valve stem head. During adjustment, the tappet should be positioned at the base circle of the camshaft lobe, which is when the valve is in the closed position.

10

5

Share

Is it safe to drive with a tire pressure of 2.2 bar in summer?

It is not safe to drive with a tire pressure of 2.2 bar in summer. According to the international GBT2978-2008 standard, the standard tire pressure for regular tires is 2.4-2.5 bar, and in summer, the tire pressure should generally be at the lower limit of the standard tire pressure range, which is 2.4 bar. A pressure of 2.2 bar is significantly below the normal range, so it is unsafe to drive. Hazards of low tire pressure: Increased friction with the road surface, leading to higher fuel consumption; Heavier steering wheel and a tendency to drift, which are factors detrimental to driving safety; Increased movement of tire components, causing excessive rolling and abnormal heat generation in the tire; Reduced functionality of the cords and rubber, leading to delamination or cord breakage, excessive friction between the tire and rim, and damage to the bead area, resulting in abnormal wear; Exponentially increased friction between the tire and the ground, causing a sharp rise in tire temperature, softening of the tire, and a rapid decrease in strength. High-speed driving may lead to a tire blowout; Increased deformation of the tire body, making the tire sidewalls prone to cracking, along with flexing movements that cause excessive heat, accelerating rubber aging, fatigue of the cord layers, and cord breakage. It also increases the tire's contact area with the ground, accelerating wear on the tire shoulders.

6

0

Share

How to Check if You Have Any Vehicles Registered Under Your Name?

If you want to check the vehicles registered under your name, you can download the Traffic Management 12123 app, register with your phone number and ID card, and then go to the homepage. There is an option for motor vehicles; click on it to see the cars registered under your name. Another method is to directly visit the vehicle management office with your ID card to inquire. Ordinary citizens do not have the right to check vehicles registered under someone else's name, which means you cannot query vehicle numbers online using just an ID card and name. Currently, national vehicle registration management is quite strict, allowing only specific authorities and individuals to conduct inquiries through specific, stringent procedures. The vehicle registration information network of the transportation department is only open internally and not available for public online queries. The vehicle management office is primarily responsible for handling motor vehicle registration, modification, transfer, mortgage, and cancellation. It also processes driver's license applications, replacements, renewals, reviews, and other related services for vehicles and drivers. When processing vehicle registration applications, the vehicle management office must complete the procedure within the stipulated time if the application materials are complete and comply with laws and regulations. If the materials are incomplete or do not meet legal requirements, the office must inform the applicant of all necessary corrections at once. For applications that do not meet the requirements, the office must provide a written explanation for the rejection or non-registration.

11

2

Share

Is the Cherokee compliant with China 5 or China 6 emission standards?

The currently available Cherokee models include both China 5 and China 6 compliant versions. The Cherokee is a new model under the Jeep brand, featuring a completely new aerodynamic exterior design, an interior inspired by sacred landscapes, and offers drivers four driving modes: Auto, Sport, Snow, Sand/Mud, and Rock. It also comes with a more advanced connected human-machine interaction system. The Cherokee is equipped with three engine options: a 2.0L naturally aspirated engine, a low-power version of the 2.0L turbocharged engine, and a high-power version of the 2.0L turbocharged engine. The 2.0L naturally aspirated engine delivers a maximum power of 109kW, a maximum torque of 190Nm, with peak power achieved at 6,250 rpm and peak torque at 4,600 rpm. This engine utilizes multi-point fuel injection technology and is constructed with an aluminum alloy cylinder head and block.

17

3

Share

Is Finger Bending Allowed for Driver's License Physical Examination?

Finger bending is allowed for driver's license physical examination. Steps for driver's license physical examination: First, go to the local People's Hospital for the physical examination. If the driving school has a designated hospital for the examination, follow the driving school's instructions; bring your ID card and personal belongings, as hospitals usually have a large flow of people, so keep your belongings safe; the hospital will have a designated location for the examination, and you can inquire at the front desk or volunteer service counter upon arrival; typically, the examination will include vision tests, height measurement, etc. The examination methods may vary depending on the hospital. After the examination, the staff will print out a completed form; you need to take this form to the counter to get it stamped. Once the physical examination form is stamped, it is complete. Keep the physical examination receipt safe, as you will need it when submitting documents to the driving school. Notes for driver's license physical examination: The physical examination form must be computer-printed; handwritten forms are not acceptable; bring the original ID card and a copy; three 1-inch white-background, bareheaded photos (one for the physical examination form, one for the application form, and one for the new driver's license); non-local residents without a residence permit must fill out an application form for the service.

14

4

Share

Should You Use the Recirculation Mode in Your Car During Summer?

Using the recirculation mode with the air conditioning in summer can quickly cool down the car interior and block harmful gases from outside. Usage of Recirculation and Fresh Air Modes: Both modes should be used, with the recirculation mode being used far more frequently than the fresh air mode. However, the timing and duration of switching between these modes should be determined based on the air quality inside and outside the car. In summer, relying solely on the recirculation mode for the car's air conditioning is not advisable. Although recirculation maximizes cooling efficiency, prolonged use or when there are many passengers can lead to stale air inside the car, which is harmful to health. Therefore, it's important to periodically switch to the fresh air mode or open the windows for ventilation. Functions of Recirculation and Fresh Air Modes: It is recommended to alternate between recirculation and fresh air modes while driving. For cooling, starting with the recirculation mode provides faster results. Once the temperature drops, switch to the fresh air mode to maintain airflow. The same principle applies when heating. You must choose either recirculation or fresh air mode; both cannot be turned off simultaneously, similar to how you can either open or close a window. The choice between recirculation and fresh air modes should be based on road conditions and the interior environment of the car.

1

Share

What is the voice system for the Subject 3 driving test?

Why is valve clearance necessary in the valve train?

Is it safe to drive with a tire pressure of 2.2 bar in summer?

How to Check if You Have Any Vehicles Registered Under Your Name?

Is the Cherokee compliant with China 5 or China 6 emission standards?

Is Finger Bending Allowed for Driver's License Physical Examination?

Should You Use the Recirculation Mode in Your Car During Summer?

Will the Car Automatically Lock if the Key is Inside?

Can Auto Hold and Engine Start-Stop Be Used Together?

Is it a big deal if the car's valve cap is lost?

What does the PVC valve in a car mean?