Where is the license plate number starting with 'Hei M' from?

What is the emission standard for cars in 2009?

2009 cars comply with either China III or China IV emission standards. You can check the environmental protection label in the upper right corner of the windshield for identification. Emission standards regulate the content of harmful gases such as carbon monoxide, hydrocarbons, nitrogen oxides, particulates, and soot emitted from vehicle exhaust, with emission sources coming from the exhaust pipe, crankcase, and fuel system. Methods to check emission standards: 1. Check the motor vehicle certificate; 2. Look for the vehicle inventory list; 3. Log in to the motor vehicle exhaust pollution supervision and management website; 4. Check the back of the environmental protection label on the car's front windshield; 5. Take the vehicle registration form to the vehicle management office for inquiry.

2

1

Share

Should You Press the Brake When Pulling the Handbrake?

You need to press the brake when pulling the handbrake. Here are the specific details about the handbrake: 1. The handbrake is purely mechanical: Long-term use will reduce its efficiency. The professional name for the handbrake is the auxiliary brake, which operates differently from the main brake. It uses a steel cable connected to the rear brake shoes to apply braking force to the vehicle. Prolonged use of the handbrake can cause the steel cable to undergo plastic deformation, which is irreversible, leading to reduced efficiency over time. 2. The best parking method for a car: This method ensures that all components of the vehicle are in a stress-free state, maintaining their performance and extending their lifespan. 3. The return spring should be used in conjunction with the handbrake: When the handbrake is engaged, the spring is stretched; when the handbrake is released, the spring returns to its original length. Long-term use of the handbrake can cause the spring to deform accordingly. Any component subjected to prolonged and frequent use will experience reduced effectiveness.

6

5

Share

How to Avoid Rear-End Collisions on Highways?

Methods to avoid rear-end collisions while driving on highways are as follows: 1. Maintain a steady speed: Drive at a constant speed and avoid speeding. 2. Stay in one lane as much as possible: Avoid weaving between lanes and refrain from sudden braking or stopping without warning in the driving lane. 3. Overtake decisively and promptly: When overtaking, pay attention to your vehicle's condition. After passing another vehicle, do not immediately return to the driving lane. Instead, signal and return to the lane only after maintaining a distance of 50-100 meters from the overtaken vehicle. 4. Use necessary warning signals when stopping: If you need to pull over temporarily due to a malfunction, turn on the right turn signal in advance to exit the driving lane. Park in the emergency lane or on the right shoulder; stopping in the driving lane is prohibited. Additionally, turn on the hazard lights and place a warning sign 150 meters behind the vehicle. 5. Overcome adverse weather conditions: On rainy days, avoid emergency braking and sharp turns. Maintain a distance from the vehicle ahead that is twice the normal distance required on clear days.

5

0

Share

What are the length, width, and height of the Sylphy car?

The length, width, and height of the Sylphy car are: 4631mm, 1760mm, and 1503mm, with a wheelbase of 2700mm. Taking the 2021 Sylphy as an example, it is a compact car with a fuel tank capacity of 50 liters, a trunk capacity of 510 liters, and a body weight of 1188kg. The 2021 Sylphy features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.6L naturally aspirated engine, delivering a maximum horsepower of 122ps, a maximum torque of 155Nm, and a maximum power of 90kW, paired with a 5-speed manual transmission.

6

4

Share

How to Adjust the Audio System in the X-Trail?

The method to adjust the audio system in the X-Trail is to open the settings and select the audio option to proceed with sound effect adjustments. The audio system is designed to alleviate the monotony of travel for both the driver and passengers, functioning as a radio and playback device. Its main components include: the head unit, speakers, and amplifier. The amplifier's role is to boost weak signals from the audio source or pre-amplifier without altering the sound quality, thereby driving the speakers to produce sound, commonly referred to as a power amplifier. Taking the 2021 X-Trail as an example, it is a compact SUV with the following dimensions: length 4675mm, width 1820mm, height 1722mm, a wheelbase of 2706mm, a minimum ground clearance of 208mm, and a curb weight of 1489kg.

11

5

Share

Can the Q5 use 92-octane gasoline?

According to the official vehicle manual recommendation, the Audi Q5 should use 95-octane gasoline. In addition to checking the suitable gasoline grade in the vehicle manual, the Audi Q5 can also refer to the label on the fuel tank cap, which typically indicates the recommended octane rating. Generally, the appropriate gasoline grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92-octane gasoline, while those with a compression ratio between 10.0-11.5 should use 95-octane gasoline. However, with the application of new technologies, the octane rating cannot be solely determined by the compression ratio. High-compression engines can also be tuned to use lower-octane gasoline, as factors beyond compression ratio—such as ignition timing, turbocharging technology, and Atkinson cycle technology—also play a role. Generally, the higher the gasoline octane rating, the higher the octane number and the better the anti-knock performance. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. If the Audi Q5 occasionally uses the wrong gasoline grade, simply switching back to the correct octane rating after consumption is sufficient. However, prolonged use of the wrong gasoline grade can have the following effects: For vehicles designed for lower octane ratings, using higher-octane gasoline will not cause damage, but the increased octane number may alter the fuel's ignition point, leading to delayed combustion in the engine. This results in reduced engine power and thermal efficiency, manifesting as poorer performance. For vehicles designed for higher octane ratings, using lower-octane gasoline can cause engine knocking. Due to the significantly lower octane number, the gasoline's ignition point decreases, leading to premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance builds up during the upward stroke. This resistance makes the engine run very unstably. Mild knocking may only increase noise without obvious engine damage, but severe knocking indicates critical engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, potentially leading to cylinder scoring.

9

1

Share

Where is the license plate number starting with 'Hei M' from?

What is the emission standard for cars in 2009?

Should You Press the Brake When Pulling the Handbrake?

How to Avoid Rear-End Collisions on Highways?

What are the length, width, and height of the Sylphy car?

How to Adjust the Audio System in the X-Trail?

Can the Q5 use 92-octane gasoline?

What is the brand of Honda genuine coolant?

How Often Should a Diesel Filter Be Replaced?

What is China National V Emission Standard for Vehicles?

Reasons for Unstable Idle Speed in Car Engines?