Where is the OBD port on the Chang'an Xinbao?

What is the actual fuel consumption of the Luxgen U7?

The actual fuel consumption of the Luxgen U7 ranges from 12 to 16 liters per 100 kilometers. A vehicle's fuel consumption is not only related to the engine displacement but also depends on factors such as the driver's habits, tire pressure, and road conditions. If the owner frequently drives in congested urban areas, the fuel consumption will be higher compared to driving on highways. The Luxgen U7 is an SUV under Dongfeng Yulon, featuring rounded and powerful European-inspired lines that create a mature and refined personalized style similar to imported European SUVs. Its body dimensions surpass those of its competitors in the same class, with a length of 4800mm, width of 1930mm, and height of 1760mm, along with a 2910mm wheelbase, making it fully comparable to luxury SUVs.

13

1

Share

How to Handle Vehicle Scrapping Procedures?

Vehicle scrapping procedures are as follows: 1. The vehicle owner (individual or organization) submits a scrapping application; 2. The applicant brings the vehicle's license (or copy) and their ID card to the municipal metal recycling company to obtain the vehicle scrapping certificate; 3. The owner then uses this certificate along with the vehicle license and plates to complete deregistration at the local vehicle management office, and proceeds to cancel road maintenance fees and operational fees at the transportation bureau. For vehicles meeting national mandatory scrapping standards, the process includes: 1. Presenting documents at the dismantling facility; 2. Receiving the vehicle scrapping notice; 3. Delivering the vehicle to an authorized dismantling plant; 4. Photographing the disassembly of five major components; 5. Submitting dismantling photos for scrapping registration; 6. Applying for subsidies.

9

1

Share

Can a Deployed Airbag Be Repaired?

A deployed car airbag cannot be repaired; it must be replaced. This is because car airbags are single-use items. Once deployed in an accident, they become ineffective and require replacement with a new airbag. The primary gas in an airbag is nitrogen, which exists in a solid form called sodium azide. During a severe collision, the solid sodium azide in the airbag rapidly decomposes to release nitrogen gas, inflating the airbag and ensuring full deployment. Nitrogen is non-toxic and odorless, and since it is a major component of air, it poses no harm to humans. The sound level during airbag deployment is approximately 130 decibels, which is within the tolerable range for humans. The powder released during deployment is a lubricant that prevents the folded airbag from sticking together and is also harmless to humans. These characteristics make nitrogen ideal as the primary component of airbags, ensuring passenger protection during accidents. The working principle of a car airbag is as follows: When a collision occurs while driving, the airbag sensor first receives the impact signal. If the impact reaches a specified intensity, the sensor activates and sends a signal to the electronic control unit (ECU). The ECU compares this signal with stored data. If the conditions for airbag deployment are met, the ECU sends an activation signal to the gas generator in the airbag assembly. Upon receiving the signal, the gas generator ignites the propellant, producing a large volume of gas. This gas is filtered and cooled before entering the airbag, causing it to rapidly inflate within milliseconds. The airbag forms an elastic cushion in front of the driver or passenger, then deflates and contracts to absorb impact energy, effectively protecting the head and chest from or reducing injury severity. A standard airbag must activate within 0.01 seconds after a collision, with the ignition device firing within 0.03 seconds, high-pressure gas entering the airbag within 0.05 seconds, outward expansion beginning within 0.08 seconds, and full inflation achieved within 0.11 seconds. The airbag system mainly consists of four components: collision sensors, the airbag control module (SRS computer), the SRS indicator light, and the airbag assembly. Collision Sensors: These are the primary input devices for the airbag system. They detect the intensity of a collision and send the signal to the SRS computer, which determines whether to activate the inflator. Most systems have 2-4 collision sensors, typically located on the left and right front fenders, the front bumper, or inside the cabin. Most sensors use an inertial mechanical switch structure. The collision sensor comprises a housing, eccentric rotor, eccentric weight, fixed contact, and rotating contact. An external resistor (R) checks for open or short circuits between the SRS computer and the sensor during system self-tests. Normally, the eccentric rotor and weight are held against a stopper by a spring, keeping the contacts open ("OFF"). During a collision, inertia causes the eccentric weight to rotate the rotor, overcoming the spring force. If the impact meets the threshold, the contacts close ("ON"), signaling the SRS computer to activate the inflator. Some vehicles also have side airbags with additional sensors for side impacts. SRS Computer: This is the control center of the airbag system. It processes signals from collision and other sensors, decides whether to deploy the airbag, and performs self-diagnostics. It continuously tests critical circuits (e.g., sensor, backup power, ignition, SRS indicator) and displays results via the indicator or fault codes stored in memory. The dashboard SRS light informs the driver of system status, while fault codes can be retrieved via specialized tools. Signal Processing Circuit: Comprising amplifiers and filters, it conditions sensor signals for the SRS computer. Power Sources: The system uses two power supplies—the vehicle battery/alternator and a backup power source (capacitors). The backup ensures operation for ~6 seconds if the main power is cut during a collision, allowing the SRS computer to function and the inflator to ignite. Beyond 6 seconds, backup power diminishes, risking deployment failure. Protection and Voltage Regulation: To safeguard against voltage spikes from inductive loads (e.g., coils, switches), the SRS module includes protection circuits. A voltage regulator maintains stable operation despite fluctuations in vehicle power. SRS Indicator: Located on the dashboard, it shows system status. A 6-second light or flash upon ignition indicates normal operation. Persistent or sudden illumination signals a fault, with codes stored for diagnosis. After a collision where the airbag deployed, fault codes aid in troubleshooting.

20

1

Share

What Does Displacement Mean?

Displacement is a specialized term in hydraulic transmission, referring to the volume of fluid inhaled or discharged per stroke or cycle. Generally speaking, the larger the displacement, the higher the technical requirements for the engine and the greater the output power. In simpler terms, cars with higher power tend to be faster (for cars of the same weight), and within the same series of vehicles, larger displacement usually corresponds to higher configurations. Engine displacement is one of the important structural parameters of a car, and it represents the size of the engine more accurately than bore diameter and the number of cylinders. Many indicators of the engine are related to displacement. Typically, a larger displacement means the engine releases more energy (converting chemical energy from fuel into mechanical energy) per unit time, resulting in better dynamic performance.

3

Share

How to Handle Traffic Violation Points Deduction on 12123?

Steps to handle traffic violation points deduction on 12123: 1. First, download and install the Traffic Management 12123 app from the app store, then log in to your account; 2. Click on 'Violation Processing'; 3. You can view your violation records; 4. Click on any violation item, then select 'Process Immediately'; 5. Check the confirmation box for penalty information and click 'Confirm and Pay'; 6. Click 'Read and Agree' to the electronic monitoring processing service rules; 7. You will then see a Traffic Management 12123 tip, click 'Confirm Next Step'; 8. Enter the verification code to proceed with payment; 9. The page will display 'Payment Successful', indicating the violation processing is complete.

10

1

Share

Why can't the car key unlock the car even though it has power?

The reasons why the car key has power but cannot unlock the car are: 1. The control unit of the key is broken, and the central control unit cannot receive signals from the key; 2. The matching code of the key has expired, and it needs to be re-matched using a computer; 3. A fault in the central locking system, possibly due to a blown fuse in the door lock circuit, leading to an open circuit; 4. The presence of a signal blocker (such as a transformer) in the location of the owner and the vehicle, which interferes with the signal between the key and the central control unit; 5. A virtual soldering issue in the power distribution box, where poor contact due to virtual soldering can also cause the sensor to malfunction, requiring repair at a professional auto repair shop. All remote keys have a mechanical key hidden inside the remote key; simply take out the mechanical key to open the car door with the physical key.

14

5

Share

Where is the OBD port on the Chang'an Xinbao?

What is the actual fuel consumption of the Luxgen U7?

How to Handle Vehicle Scrapping Procedures?

Can a Deployed Airbag Be Repaired?

What Does Displacement Mean?

How to Handle Traffic Violation Points Deduction on 12123?

Why can't the car key unlock the car even though it has power?

High Beam or Low Beam on Highways?

Where is the Best Place to Install ETC?

What are the advantages and disadvantages of a dual-clutch transmission?

What are the symptoms of a faulty thermostat?