Where is the license plate Lu R from?

What to Do If Car Tire Pressure Is Too High?

To address high tire pressure in a car: Simply press the air release valve while monitoring the numbers on the tire pressure gauge to maintain normal pressure. The hazards of high tire pressure include: 1. Reduced tire friction and adhesion, affecting braking performance and tire lifespan; 2. Decreased puncture resistance, increasing the risk of blowouts; 3. Accelerated wear on the central tread pattern, shortening tire life, increasing vehicle vibration, and affecting the lifespan of other components; 4. Excessive stretching of tire cords, reducing tire elasticity, increasing the load on the car while driving, and lowering puncture resistance; 5. Increased susceptibility to punctures from nails, glass, or other sharp objects on the road, leading to internal cracks, bursts, and blowouts upon impact.

2

3

Share

How many types of crankshaft position sensors are there?

Crankshaft position sensors come in 3 types: magneto-inductive, Hall effect, and photoelectric. The working principle of the crankshaft position sensor is: 1. The crankshaft position sensor is installed on the flywheel, using pulse signals to sense the crankshaft position, determining the engine speed and the relative position of the pistons when the crankshaft rotates; 2. The engine control unit uses the information provided by the crankshaft position sensor to generate ignition signals and injection pulses, which are sent to the ignition coil and fuel injector respectively. The functions of the crankshaft position sensor are: 1. Determining the crankshaft's angle and the engine's speed; 2. The crankshaft position sensor works together with the camshaft position sensor to determine the engine's ignition timing.

1

0

Share

Precautions When Switching from 95 to 92 Octane Gasoline?

Switching from 95 to 92 octane gasoline occasionally has no impact, but it is not recommended for long-term use as it may cause engine knocking. 95 octane gasoline is suitable for engines with high compression ratios. If a high-compression engine uses 92 octane gasoline, abnormal combustion may occur, leading to knocking and engine damage. Additionally, carbon deposits will accumulate faster than usual, resulting in insufficient power, engine wear, or even engine failure. Gasoline is a mixture, and the chemical compositions of the two types are relatively similar, with strong anti-knock properties. To ensure vehicle safety, it is advised to use them separately. The difference between 92 and 95 octane gasoline lies in their octane ratings and quality levels. Details are as follows: Difference in octane rating: 92 octane gasoline contains 92% isooctane and 8% n-heptane. 95 octane gasoline contains 95% isooctane and 5% n-heptane. Difference in gasoline quality: The octane rating represents the gasoline's octane value. A higher octane rating indicates a higher octane value, which means better anti-knock performance. This allows the car's engine to run more smoothly, reduces wear, and provides better engine protection. For vehicles requiring lower octane gasoline, using higher octane gasoline will not cause damage. However, the increase in octane value may alter the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles requiring higher octane gasoline, using lower octane gasoline may cause engine knocking. Since the octane value is significantly lower, the reduced ignition point may cause premature ignition during the compression stroke. If combustion occurs before the spark plug ignites, resistance will arise during the upward stroke. This resistance makes the engine run very unstably. Mild knocking only increases noise without obvious engine damage, but severe knocking indicates serious engine issues, affecting driving stability and causing abnormal wear on pistons and cylinders, potentially leading to cylinder scoring. If you accidentally mix or use the wrong octane gasoline, simply refuel with the correct octane gasoline next time to restore normal operation. Some car owners believe that using higher octane gasoline can improve performance, but this is unnecessary. If the engine's compression ratio does not meet the standard, even the best gasoline will not make a difference. At most, it may reduce carbon emissions and keep the engine cleaner.

10

3

Share

What to Do If a Mouse Enters the Car Engine Compartment?

The solutions for a mouse entering the car engine compartment are: 1. Regularly clean the engine to avoid attracting mice; 2. Use the smell of camphor balls to repel mice; 3. After repelling the mice, use a car protective net to cover the chassis to prevent mice from re-entering the engine compartment. Preventive measures to keep mice out of the engine compartment include: 1. Avoid parking the vehicle in areas prone to mouse infestation; 2. Frequently check the sealing parts of the chassis for leaks or damage; 3. Maintain the cleanliness of the vehicle and promptly dispose of food waste; 4. Inspect the external air inlet and outlet filter screens of the air conditioning system for detachment or damage; 5. Use an electronic ultrasonic rodent repeller.

4

2

Share

Why was the Honda Greiz discontinued?

Here are the reasons why the Honda Greiz was discontinued: 1. Very low configuration: The base model of the Greiz lacks ESP, hill-start assist, a sunroof, seat adjustment, and a center armrest. Only the top trim comes with a rearview camera, rear radar, and a central control screen, while other versions do not. The entire lineup uses halogen lights, which are prone to fogging. In terms of configuration, competitors like the Geely Emgrand and Changan Eado are clearly better than the Greiz. 2. Poor noise insulation: Noise suppression at high speeds is unsatisfactory. Although Dongfeng Honda aimed to maximize cost-cutting, they even significantly reduced the vehicle's comfort features. The suspension tuning is on the stiffer side, and the structure adopts the most common front MacPherson strut and rear torsion beam non-independent suspension for this price range. Road feedback is very clear, so it's essential to slow down well in advance when going over speed bumps. 3. Cheap interior: The interior quality is on par with most models in the same segment, lacking excessive flair and appearing somewhat cheap. It uses a lot of hard plastics, resulting in average visual and tactile experiences.

15

4

Share

What brand is the Sylphy?

Sylphy is a model under Dongfeng Nissan. Taking the 2021 Nissan Sylphy as an example, it belongs to the compact car category with body dimensions of: length 4631mm, width 1760mm, height 1503mm, and a wheelbase of 2700mm. It has a fuel tank capacity of 50 liters and a curb weight of 1188kg. The 2021 Nissan Sylphy features a MacPherson strut independent front suspension and a torsion beam non-independent rear suspension. It is equipped with a 1.6L naturally aspirated engine, delivering a maximum horsepower of 122ps, a maximum power of 90kw, and a maximum torque of 155nm, paired with a 5-speed manual transmission.

14

1

Share

Where is the license plate Lu R from?

What to Do If Car Tire Pressure Is Too High?

How many types of crankshaft position sensors are there?

Precautions When Switching from 95 to 92 Octane Gasoline?

What to Do If a Mouse Enters the Car Engine Compartment?

Why was the Honda Greiz discontinued?

What brand is the Sylphy?

Is Engine Lubricant Necessary?

Is pressing the clutch pedal the same as being in neutral?

What are the methods for summer tire maintenance?

Does Wuling Hongguang have SUV models?