What is the slogan of Audi owners?

What is the ex-factory price when buying a car?

The ex-factory price is generally a specialized term in the automobile manufacturing and sales industry, usually referring to the price of a vehicle that has not been fitted with any non-standard accessories (relative to the standard configuration when the car leaves the factory). As understood, the ex-factory price refers to the price of the entire vehicle excluding other fees. In addition, common terms such as the official guide price and terminal reference price also refer to the ex-factory price. Below is a related introduction: 1. The meaning of the on-road price: The on-road price generally refers to all the expenses incurred by the consumer from purchasing a car to registering it. In addition to the guide price of the vehicle, the on-road price also includes purchase tax, vehicle and vessel usage tax, car insurance fees, and registration fees. If the car is purchased on loan, the on-road price also includes other fees such as 4S store handling fees, GPS fees, and car loan interest. 2. Negotiate the ex-factory price first when buying a car: It is more cost-effective to negotiate the ex-factory price when buying a car, but 4S stores may not be willing to negotiate because they usually have many bundled sales. By bundling accessories and loans, they can maximize their profits. Generally, the profit from 4S stores adding accessories or decorations is even higher than the profit from selling a car. The profit from the ex-factory price is fixed and transparent, and the extent of discounts can be easily understood by asking a few more stores.

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What is the principle of passive tire pressure monitoring?

Passive tire pressure monitoring is an indirect tire pressure monitoring system. Its working principle is that when the air pressure of a tire decreases, the weight of the vehicle will cause the rolling radius of that wheel to become smaller, resulting in its rotation speed being faster than other wheels. By comparing the difference in rotation speed between tires, the purpose of monitoring tire pressure is achieved. There are three commonly used methods of tire pressure monitoring: Direct tire pressure monitoring: Direct tire pressure monitoring devices use pressure sensors installed in each tire to directly measure the tire's air pressure. The pressure information is transmitted from inside the tire to a central receiver module via a wireless transmitter, and then the tire pressure data for each tire is displayed. When the tire pressure is too low or there is a leak, the system will automatically issue an alarm. Indirect tire pressure monitoring: When the air pressure of a tire decreases, the weight of the vehicle will cause the rolling radius of that wheel to become smaller, resulting in its rotation speed being faster than other wheels. By comparing the difference in rotation speed between tires, the purpose of monitoring tire pressure is achieved. Indirect tire alarm systems actually rely on calculating the rolling radius of the tire to monitor air pressure. Introduction to Tire Pressure Monitoring System (TPMS): It combines the advantages of both systems mentioned above. Direct sensors are installed in two diagonally opposite tires, and a 4-wheel indirect system is also equipped. Compared to using only a direct system, this composite system can reduce costs and overcome the defect of the indirect system not being able to detect when multiple tires simultaneously have low air pressure. However, it still cannot provide real-time data on the actual pressure in all four tires like a direct system.

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What are the benefits of carbon fiber materials?

Carbon fiber materials offer the following benefits: 1. High Performance: Carbon fiber possesses a series of excellent properties that are irreplaceable by other materials, such as being lightweight, high strength, high modulus, high-temperature resistance, corrosion resistance, erosion and splash resistance, as well as good designability and composability. 2. Lightweight: The most obvious benefit of applying carbon fiber to automobiles is the lightweighting of vehicles, which directly leads to improvements in energy efficiency, acceleration, and braking performance. Generally, a 10% reduction in vehicle weight results in a 6% to 8% reduction in fuel consumption, a 5% to 6% reduction in emissions, an 8% to 10% improvement in 0-100km/h acceleration, and a 2 to 7-meter reduction in braking distance. 3. Safety: Lightweighting the vehicle body can lower the center of gravity, enhancing the vehicle's handling stability and making its operation safer and more stable. Carbon fiber composites have an excellent energy absorption rate, with collision energy absorption capabilities six to seven times that of steel and three to four times that of aluminum, further ensuring the safety of the vehicle. 4. Comfort: Carbon fiber composites have higher vibration damping; light alloys take 9 seconds to stop vibrating, while carbon fiber composites take only 2 seconds. 5. Reliability: Carbon fiber composites have higher fatigue strength. The fatigue strength of steel and aluminum is 30-50% of their tensile strength, while carbon fiber composites can reach 70-80%, significantly improving the fatigue reliability of materials used in automobiles. 6. Enhancing Vehicle Body Development: Due to the superior designability of carbon fiber composites compared to metals, they facilitate more platform-based, modular, and integrated vehicle body development. Thus, the hybrid body structure of carbon fiber and metal platforms can achieve modularity and integration for traditional automobile body structures, greatly reducing the variety of parts, lowering tooling investment, and shortening the development cycle.

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Can the car battery be charged at idle speed?

Car can charge the battery at idle speed, but the charging current is relatively small in this state, and it takes a long time to fully charge the battery. At idle speed, the voltage of the generator, i.e., the potential difference, can meet the charging conditions of the battery. If the car is only in the power-on state, try not to use the electrical equipment on the car, because the capacity of the car battery is very small and is only used to provide engine start-up. If the car battery is overdrawn, it may also cause permanent damage to the battery. In this case, the battery needs to be replaced in time.

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What are the functions and effects of car bumpers?

Car bumpers function by utilizing the hydraulic spring shock absorption feature. In the event of an instantaneous collision, the bumper serves to cushion the impact, thereby reducing the extent of damage post-collision and enhancing the safety of both the vehicle and its occupants. The effects of car bumpers include: making driving more comfortable. The characteristics of bumpers are: 1. Can alleviate fatigue after long-distance driving; 2. Effectively addresses the issue of weakened shock absorber springs, restoring shock absorber performance; 3. Protects shock absorbers and suspension systems, preventing oil seal leaks in shock absorber cores; 4. Simple installation without loosening any vehicle screws; 5. Extends the lifespan of shock absorbers.

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How to Open the Fuel Tank Cap on the Envision?

The method to open the fuel tank cap on the Envision is: The Envision's fuel tank does not have a switch. After unlocking the vehicle and shifting to P (Park), simply press the fuel tank cap from the outside to open it. Taking the 2021 Envision as an example, its body dimensions are: length 4694mm, width 1839mm, height 1686mm, with a wheelbase of 2750mm and a curb weight of 1610kg. The 2021 Envision features a McPherson strut front suspension and a multi-link independent rear suspension. It is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 169PS, maximum torque of 250Nm, and maximum power of 124kW, paired with a 7-speed dual-clutch transmission.

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