What is the difference between Goodyear NCT5 and Assurance TripleMax?

How to Explain Ignition Advance Angle?

From the moment of ignition until the piston reaches the top dead center of compression, the angle through which the crankshaft rotates during this period is called the ignition advance angle. The ignition advance angle that enables the engine to achieve optimal power, fuel economy, and emissions is referred to as the optimal ignition advance angle. Functions of the ignition advance angle: 1. Increase output power: If ignition occurs exactly when the piston reaches the top dead center, the air-fuel mixture begins to burn as the piston has already started moving downward, leading to a decrease in engine power. Therefore, advancing the ignition ensures that the energy generated by the combustible mixture is effectively utilized, enhancing the engine's output power. 2. Improve mechanical efficiency: An appropriate ignition advance angle allows the engine to perform the maximum mechanical work per cycle.

4

Share

When Did the Vehicle Purchase Tax Get Halved?

From October 1, 2015, to December 31, 2016, a preferential policy was implemented to halve the vehicle purchase tax for passenger vehicles with a displacement of 1.6 liters or below. Below is the relevant information: 1. Calculation Method: When the vehicle purchase tax was halved in 2016, the tax payable was calculated as 100,000 yuan ÷ (1 + 17%) × 5% = 4,274.50 yuan (the 100,000 yuan includes 17% VAT, and the vehicle purchase tax is calculated based on the price excluding VAT). In 2017, when the tax was reduced to 7.5% according to the "Notice," the tax payable was 100,000 yuan ÷ (1 + 17%) × 7.5% = 6,410.26 yuan. 2. Relevant Laws: In the "Notice," the Ministry of Finance clearly stipulated that the purchase date of passenger vehicles is determined based on the issuance date of valid documents such as the "Unified Invoice for Motor Vehicle Sales" or the "Special Customs Duty Payment Certificate." The vehicle purchase tax policy for new energy vehicles follows the "Announcement on Exempting New Energy Vehicles from Vehicle Purchase Tax" (Announcement No. 53 of 2014 by the Ministry of Finance, State Taxation Administration, and Ministry of Industry and Information Technology).

6

5

Share

Can You Start the Engine in P Gear?

p gear can directly start the engine. In fact, the transmission of an automatic car is not that fragile, and it can be started in either P gear or N gear. Additional information: 1. The reason for the car rolling after parking in P gear: P gear is the most common gear in automatic transmission models, usually located at the frontmost position of the gear shift console, in front of the R gear, designed to lock the axle when the car is stationary on a slope. Both P gear and N gear are neutral gears, meaning the power generated at the engine input end cannot be transmitted to the transmission output end. This is why drivers often experience a slight slide after parking in P gear on uneven surfaces. 2. Mechanical braking device: Since P gear is equipped with an additional mechanical braking device, the vehicle will no longer move once the gear grooves in the transmission are locked by the pawl. N gear itself does not have any wheel-locking mechanism, requiring the use of the handbrake or brake pedal to stop the wheels. Additionally, when in N gear, all gears in the automatic transmission can rotate freely; but when in P gear, the output gears of the transmission are locked and stationary.

2

4

Share

What Are the Types of Car Window Films?

Car window films can be categorized into dyed films, coated and composite process films, and vacuum thermal evaporation films. Below is an expanded introduction to each: 1. Dyed films: Currently, most dyed car films on the market use deep-dyeing technology, which involves adding heat-absorbing agents through deep dyeing to absorb infrared rays from sunlight and achieve heat insulation. However, since they also absorb visible light, the visible light transmittance is insufficient, and the clarity is poor due to inherent process limitations. Another major drawback of these films is that their heat insulation function degrades quickly, and they are prone to fading. They are relatively inexpensive. 2. Coated and composite process films: These films primarily serve to block intense sunlight. They were among the earliest types of car films produced and generally lack heat insulation properties. They were initially called sun paper or tea paper. 3. Vacuum thermal evaporation films: These films employ vacuum thermal evaporation technology, where an aluminum layer is evaporated onto the base material to achieve heat insulation. This is commonly referred to as the metal film category, offering relatively long-lasting heat insulation. However, the downside is lower clarity, which affects visual comfort, and another significant drawback is their high reflectivity.

20

5

Share

How many kilometers can a van run before being scrapped?

Now the mandatory scrapping policy has been abolished, which means non-commercial vehicles can be used indefinitely as long as they pass the annual inspection each year, until they fail to meet inspection standards. Below is relevant information: 1. Scrapping mileage: Generally, vans should be scrapped after reaching 600,000 kilometers, but few drivers actually reach this limit. The reason is that prolonged use leads to severe component wear, increasing the likelihood of vehicle malfunctions. Repairs become not only troublesome but also costly, making it economically unwise. 2. Relevant regulations: Vehicles can continue to be driven as long as they pass the annual inspection. The scrapping principle mainly follows "service life as primary criterion, mileage as secondary reference". Vehicles within 5 years require biennial inspections; those between 6-15 years need annual inspections; and vehicles over 15 years old require semi-annual inspections.

18

1

Share

How to Adjust the Front and Rear Position of Bus Seats?

There are usually two buttons on the armrest. Press the buttons while leaning your back backward to push the seat back and adjust the seat position. On the right side of the seat, there is a lever that can be pulled backward. Simultaneously, use your body weight to lean back gently to adjust to your most comfortable position. Lift the adjustment handle located at the lower right of the seat to release the locking mechanism, allowing the seat to move forward or backward. Once the desired position is achieved, release the handle to lock the seat in place.

9

5

Share

What is the difference between Goodyear NCT5 and Assurance TripleMax?

How to Explain Ignition Advance Angle?

When Did the Vehicle Purchase Tax Get Halved?

Can You Start the Engine in P Gear?

What Are the Types of Car Window Films?

How many kilometers can a van run before being scrapped?

How to Adjust the Front and Rear Position of Bus Seats?

What is the Multibeam LED Headlight?

What is the maximum speed during a car's break-in period?

Can You Use Windshield Wipers in Snowy Weather?

Is it allowed to make a U-turn when the traffic light is red?