What does the automotive DMS system mean?

Do Spark Plugs Affect Fuel Consumption?

Spark plugs do affect fuel consumption. If a spark plug is damaged, it can directly lead to increased fuel consumption in a vehicle. Methods to determine if a spark plug is damaged: Remove the spark plug and observe its appearance to assess its condition. A normal spark plug's insulator skirt and electrodes should appear gray-white, gray-yellow, or light brown. A properly functioning spark plug will have a reddish-brown insulator skirt, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plug has oil stains or deposits but is not damaged, it can continue to be used after cleaning off the oil and deposits. If the spark plug is severely damaged, showing signs like blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plug with a new one. Additionally, if the spark plug appears black as if smoked, it indicates the wrong heat range was selected or the air-fuel mixture is too rich, with oil creeping up. Steps to replace a spark plug: Open the engine hood, lift the plastic engine cover, and remove the high-voltage wires. Mark each wire according to its corresponding cylinder position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing, check for any external debris like leaves or dust and clean them thoroughly. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the high-voltage wires in the firing order and secure the cover.

5

1

Share

Can a Chinese Driver's License Be Exchanged for an International Driver's License?

Holders of a Chinese mainland driver's license cannot exchange it for an international driver's license because mainland China has not joined the United Nations Convention on Road Traffic. Overview: The motor vehicle driver's license examination is an official driving skills test conducted within the territory of the People's Republic of China to obtain legal permission to drive motor vehicles. Upon passing the exam, the corresponding class of license is issued. Additional Information: The Ministry of Public Security of China has published the revised "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" on its official website. According to these regulations, the content and passing standards for the driver's license examination will be unified nationwide. On May 10, 2021, the Ministry of Public Security held a press conference to announce 12 convenience measures under the "I Do Practical Things for the People" initiative, which deepens the reform of "streamlining administration, delegating power, improving regulation, and upgrading services" in public security and traffic management.

19

1

Share

How many types are there in steering systems based on power source?

Automotive steering systems are categorized into two types based on the power source: mechanical steering systems and power steering systems. Introduction to Mechanical Steering Systems: Mechanical steering systems use the driver's physical strength as the steering power source, hence they are also known as manual steering systems. They consist of three main components: the steering control mechanism, the steering gear, and the steering linkage. The steering gear is typically fixed to the vehicle frame or body, and the steering force usually changes direction after passing through the steering gear. Introduction to Power Steering Systems: Power steering systems convert part of the engine's mechanical energy into pressure energy (hydraulic or pneumatic energy). Under the driver's control, this system applies hydraulic or pneumatic forces in different directions to the steering linkage or a specific component within the steering gear, thereby reducing the steering effort required from the driver. This system is referred to as a power steering system.

10

4

Share

Can a diesel car still be driven if the OBD light is on?

Generally, when the OBD light in a diesel vehicle illuminates, it indicates that the vehicle's exhaust emissions are exceeding the standard. It can still be driven, but repairs should be carried out as soon as possible. Below is relevant information: OBD: OBD, as an abbreviation for a proprietary term, stands for On-Board Diagnostics in Chinese. This system can monitor the working conditions of the engine's electronic control system and other functional modules of the vehicle in real-time during operation. If any abnormal conditions are detected, it determines the specific fault based on specific algorithms and stores the diagnostic trouble codes in the system's memory. Function of OBD: The useful information obtained after system self-diagnosis can assist in vehicle maintenance and repairs. Technicians can use the manufacturer's specialized equipment to read the fault codes, enabling quick fault localization for vehicle repairs and reducing the time required for manual diagnosis.

7

5

Share

How many points are deducted for turning right on a straight lane?

Turning right on a straight lane deducts three points. The penalty standard for driving a motor vehicle on a highway without following the prescribed lane: 3-point deduction and a fine. The penalty standard for driving a motor vehicle on an urban expressway without following the prescribed lane: 3-point deduction and a fine. The penalty standard for driving a motor vehicle on roads other than highways and urban expressways without following the prescribed lane: no point deduction, only a fine. Precautions for right turns: Change lanes in advance. In urban road conditions, which are mostly congested, many people decide to change lanes only when they are about to turn. Turn on the turn signal in advance. This mainly serves as a warning to vehicles and pedestrians behind, allowing them to understand your direction. Yield to straight-going vehicles. Many people understand this principle, but few actually follow it. Many turning vehicles accelerate and cross lanes, leading to collisions between straight-going and turning vehicles, with the turning vehicle bearing full responsibility.

10

1

Share

Will Body Shaking in Subject 3 Result in Point Deduction?

Shaking will not result in point deduction. Introduction: Subject 3 includes the road driving skills test and the safety & civilized driving knowledge test, which are part of the motor vehicle driver's license assessment. It is the abbreviated term for the road driving skills and safety & civilized driving knowledge test subjects in the motor vehicle driver examination. The content of the road driving skills test varies for different permitted driving vehicle types. Specific Test Content of Subject 3: The road driving skills test generally includes: vehicle preparation, lighting simulation test, starting, straight-line driving, gear shifting operations, lane changing, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, passing pedestrian crossings, passing school zones, passing bus stops, meeting oncoming vehicles, overtaking, making U-turns, and nighttime driving. The safety & civilized driving knowledge test generally includes: requirements for safe and civilized driving operations, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods for situations like tire blowouts, and post-accident handling knowledge.

10

5

Share

What does the automotive DMS system mean?

Do Spark Plugs Affect Fuel Consumption?

Can a Chinese Driver's License Be Exchanged for an International Driver's License?

How many types are there in steering systems based on power source?

Can a diesel car still be driven if the OBD light is on?

How many points are deducted for turning right on a straight lane?

Will Body Shaking in Subject 3 Result in Point Deduction?

What is the material of the three-way catalytic converter?

Can I Buy Insurance for a Car That Has Been Uninsured for 2 Years?

What is the reason for hitting the right corner when reversing into the garage?

Do I Need to Retake the Road Test if I Fail the Theory Part of Subject Three?