Which air circulation mode should be used when car windows fog up in rainy weather?

How to Turn On the High and Low Beams on a Volkswagen?

Volkswagen's high and low beam switch is located on the left side of the steering wheel, as part of a set of lighting controls. Below is a detailed introduction to the adaptive high and low beam function: 1. Adaptive high and low beams refer to the vehicle's headlights automatically switching between high and low beams during nighttime driving. This is achieved through sensors, typically a camera mounted on the inside of the windshield, which detect oncoming or same-direction vehicles and pedestrians. This allows the driver to focus more on driving without the need to manually switch between high and low beams frequently. 2. The car's adaptive high and low beam lighting system uses a camera located on the rearview mirror to detect vehicles ahead, with a detection range of up to 400 meters. If an oncoming vehicle is detected, the system selectively blocks the high beam light range to avoid shining directly on the vehicle, ensuring clear visibility for the driver without affecting the oncoming vehicle. When the system detects no vehicles ahead, it automatically switches back to high beams.

10

1

Share

Can 75% Alcohol Be Brought into a Car?

From a safety perspective, 75% alcohol is not allowed to be brought into a car. Here are the detailed explanations: 1. Alcohol is a Class A fire hazard: The ignition point of alcohol is only 20°C. If the temperature inside the car is too high, it may cause spontaneous combustion. Therefore, it is best not to place alcohol in the car. If alcohol must be stored in the car, it is recommended to keep it in a well-sealed bottle, placed in a spot away from sunlight and relatively cooler, or park the car in a shaded area. 2. The flash point of 100% alcohol is around 12°C, while 75% alcohol has a flash point of approximately 22°C: The so-called "flash point" refers to the lowest temperature at which a mixture of fuel and outside air can ignite and immediately burn when exposed to a flame. Simply put, 75% alcohol can easily ignite or even explode at a minimum temperature of 22°C.

20

2

Share

What is the equivalent of 4.0L in terms of turbocharged engines?

4.0T engine's power output is roughly equivalent to a 5.0-liter naturally aspirated engine, and the amount of air intake for a 4.0T engine is also approximately equal to that of a 5.0-liter naturally aspirated engine. When choosing a car's displacement, you can make your selection based on your usual driving environment. If most of your driving is done in urban areas, a naturally aspirated engine might be the better choice. Additional information: 1. Naturally aspirated engine: A naturally aspirated engine delivers atmospheric pressure to the combustion chamber without the assistance of any supercharger. Naturally aspirated engines provide a certain level of smoothness to the vehicle, offer good fuel efficiency, and have relatively low maintenance costs. Most early vehicle models were equipped with naturally aspirated engines, with turbocharged engines becoming more prevalent later. 2. Turbocharged engine: A turbocharged engine adds a turbocharger to the base engine. The turbocharger compresses air to increase the vehicle's air intake, thereby delivering greater power output to the engine. Turbochargers can be categorized into mechanical superchargers and turbochargers, with the latest product being pressure wave superchargers.

12

0

Share

Will the engine be damaged if it experiences bearing seizure?

Bearing seizure in an engine can lead to crankshaft lock-up. Engine bearing seizure: After bearing seizure occurs, the crankshaft may suffer deformation and damage. If repairs are performed without proper alignment and grinding, when the engine experiences bearing seizure and crankshaft lock-up, the crankshaft will be subjected to bending and torsional forces. The high-speed rotating crankshaft-connecting rod mechanism undergoes sudden braking, making the crankshaft highly prone to bending and twisting deformation. The journal surfaces may experience varying degrees of damage such as burning, scoring, and out-of-roundness. If repairs are conducted without inspecting, aligning, and grinding the crankshaft, and only the bearings are replaced, the proper fit between bearings and journals will be compromised. The coaxiality of main journals and connecting rod journals will exceed tolerance limits, leading to increased friction and subsequent continuous bearing seizure. Repair method: Replace the bearings and clean the crankshaft oil passages.

2

3

Share

What is the general fuel tank capacity of a car in liters?

Generally, the fuel tank capacity of small cars ranges from 35 to 45 liters, while that of medium-sized cars ranges from 55 to 75 liters. A full tank typically allows a driving range of approximately 500 kilometers. The size of the fuel tank is correlated with the car's displacement and fuel consumption—larger fuel consumption corresponds to a larger tank, and vice versa. During actual refueling, the amount of fuel added may exceed the calibrated capacity. This is because the fuel tank capacity specified by car manufacturers is measured from the bottom of the tank to the safety limit. There is additional space from the safety limit to the tank opening, which is designed to accommodate fuel expansion due to temperature increases, preventing overflow. If fuel is filled up to the tank opening during refueling, the actual amount of fuel added may exceed the calibrated tank capacity. To check the remaining fuel level, drivers can observe the fuel gauge on the right side of the instrument panel, which is marked with 'E' and 'F'. When the needle approaches 'E', it indicates low fuel, while nearing 'F' signifies sufficient fuel.

19

3

Share

What are the differences between VARTA Blue and Black labels?

Here are the differences between VARTA Blue and Black labels: 1. Different warranty periods. The VARTA Blue label comes with an 18-month warranty, while the Black label has a 12-month warranty. 2. Differences in performance and durability. As an upgraded version of the Black label, the VARTA Blue label slightly outperforms in performance and durability, featuring PowerFrame grid technology with high vibration resistance and heat tolerance. 3. Price difference. The VARTA Blue label is more expensive compared to the VARTA Black label. Below is relevant information about VARTA batteries: 1. Passenger car series. The VARTA passenger car series includes VARTA AGM series, EFB series, VARTA Silver label series specifically for power, Blue label series, Black label series, and Northern version, covering most mainstream vehicle models in the market. 2. Commercial vehicle series. The VARTA commercial vehicle series consists of two major categories: light commercial vehicle batteries and heavy commercial vehicle batteries, meeting the needs of vans, trucks, buses, public transport, construction machinery vehicles, and agricultural machinery. 3. Taxi-specific series. The VARTA taxi series features reinforced design to meet the demanding conditions of long operation hours and frequent start-stop cycles for taxis.

12

5

Share

Which air circulation mode should be used when car windows fog up in rainy weather?

How to Turn On the High and Low Beams on a Volkswagen?

Can 75% Alcohol Be Brought into a Car?

What is the equivalent of 4.0L in terms of turbocharged engines?

Will the engine be damaged if it experiences bearing seizure?

What is the general fuel tank capacity of a car in liters?

What are the differences between VARTA Blue and Black labels?

Can China 5 be upgraded to China 6?

What are the sounds of abnormal engine noises?

How Many Seats for Passenger Vehicles in Beijing Do Not Require a Lottery?

What is the 0-100 km/h acceleration time of the Subaru BRZ?