What is the difference between Volkswagen's 320A and 790 LCD instrument clusters?

Are the Rotation Directions of Worm and Worm Wheel the Same?

The rotation directions of the worm and worm wheel must be the same when they are meshed; only with the same rotation direction can they engage and make contact. Below is an extended introduction about the meshing of worm and worm wheel: Principle of Worm and Worm Wheel Meshing: When the teeth of the two meshing gears come into contact, the action and reaction forces between the tooth surfaces generate contact stress on the working surfaces. Due to the changing position of the meshing point and the periodic motion of the gears, the contact stress varies in a pulsating cycle. Characteristics of Worm and Worm Wheel: It can achieve a large transmission ratio, which is more compact than crossed helical gear mechanisms. The meshing tooth surfaces of the two gears are in line contact, significantly increasing their load-bearing capacity compared to crossed helical gear mechanisms. Worm gear transmission is equivalent to screw transmission, involving multi-tooth meshing, resulting in smooth operation and very low noise. It has a self-locking feature; when the lead angle of the worm is smaller than the equivalent friction angle between the meshing teeth, the mechanism can achieve self-locking, enabling reverse self-locking.

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How many brands has Geely acquired?

Geely has acquired 8 brands including Volvo, Proton, Lotus, London Electric Vehicle, Farizon Auto, Lynk & Co, Polestar, and Geometry. Below is the acquisition history of Geely: Geely's acquisition history: In 2017, Geely acquired Proton. In February 2013, it acquired the British London Taxi Company. On August 2, 2010, it acquired 100% of Volvo's car business. In 2017, it acquired 9.69% of Daimler's shares, becoming the largest shareholder. Geely's management rights: Geely Auto Group currently owns the Geely Auto brand, Lynk & Co brand, and Geometry brand, holds 49.9% of Proton's shares with full management rights, and owns 51% of the luxury sports car brand Lotus. In April 2019, Geely Auto officially signed a contract with the 19th Asian Games Organizing Committee to become the official automotive service partner of the Hangzhou Asian Games, marking a new phase in Geely Auto's brand upgrade journey.

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Is HUD Head-Up Display Practical?

HUD head-up display is quite practical. The function of HUD head-up display: Its function is to project important driving information such as speed and navigation onto the windshield in front of the driver, allowing the driver to see important information like speed and navigation without lowering or turning their head. The design purpose of HUD: The driver-centered design aims to make it more convenient for the driver to view the car screen and operate knobs while driving; blind operation is to keep the driver's gaze from leaving the front as much as possible; displaying navigation information on the multi-function dashboard is to minimize the distraction of checking navigation.

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What does DCDC mean in new energy vehicles?

DCDC in new energy vehicles refers to a converter. Here is an introduction to related content: Electricity: As a crucial part of the electric vehicle power system, one of its important functions is to provide the necessary power for the power steering system, air conditioning, and other auxiliary equipment. Power supply: It appears in the composite power system, connected in series with supercapacitors, to regulate power output and stabilize bus voltage, supplying power to onboard electrical devices. Its electrical energy comes from the power battery pack and is used to power onboard electrical appliances. Below is extended information on the characteristics of new energy vehicles: Hybrid vehicles: Equipped with batteries that can conveniently recover kinetic energy during downhill driving. In busy urban areas, the internal combustion engine can be turned off, and the vehicle can be driven solely by the battery, achieving "zero" emissions. Pure electric vehicles: Relatively simple and mature technology, can be charged wherever there is a power supply. Fuel cell vehicles: Zero or near-zero emissions, reduce water pollution caused by oil leaks, lower greenhouse gas emissions, operate smoothly and noiselessly. Hydrogen-powered vehicles: Emit pure water and produce no pollutants while driving. Supercapacitor vehicles: Short charging time, high power density, large capacity, long service life, maintenance-free, economical, and environmentally friendly.

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Are Motorcycles Allowed on Hunan Expressways?

Motorcycles are allowed on Hunan expressways. Article 39 of the 'Hunan Province Expressway Management Regulations' states that pedestrians, non-motorized vehicles, tractors, wheeled special machinery vehicles, articulated buses, full-trailer towed vehicles, and other motor vehicles with a design maximum speed of less than 70 kilometers per hour are not allowed to enter expressways. There is no mention of prohibiting motorcycles from entering expressways. Expressway speed limits: The maximum speed on expressways must not exceed 120 kilometers per hour, and the minimum speed must not be lower than 60 kilometers per hour. On expressways, the maximum speed for small passenger cars must not exceed 120 kilometers per hour, other motor vehicles must not exceed 100 kilometers per hour, and motorcycles must not exceed 80 kilometers per hour. Provinces where motorcycles are banned from expressways: Sichuan, Hainan, Fujian, Jiangsu, and other regions prohibit motorcycles from entering expressways. In addition to expressway road conditions, wind resistance can also affect the safe driving of motorcycles. Motorcycles are very light, and at high speeds, wind resistance—especially crosswinds generated when large vehicles pass by—requires excellent driving skills to ensure safe travel.

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What are the precautions during driving?

Driving requires attention to following distance, overtaking, and lane changes. Details are as follows: Following Distance: When driving on the road, it is important to maintain a safe following distance. According to relevant tests, when braking suddenly at a speed of 100 km/h, even the best cars require nearly 40 meters of braking distance. Even if driving speeds in urban areas may not reach 100 km/h, it is still impossible to guarantee that the vehicle can come to a complete stop immediately under normal driving conditions. No Phone Calls While Driving: Answering phone calls while driving is a dangerous factor that can lead to accidents. Experiments show that a driver's attention can decrease by 20%~70% during a call. Even if a vehicle is equipped with a hands-free system, if the call distracts the driver and reduces their focus on the vehicle and surroundings, the risk of accidents inevitably increases. Overtaking and Lane Changes: Novice drivers are usually hesitant to overtake. Different road sections and conditions require different driving techniques. Unless under special circumstances, it is advisable to overtake from the left. When overtaking, first observe the left front, then check the left rearview mirror and its blind spot. After confirming safety, signal left and gradually merge into the left lane of the vehicle ahead.

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What is the difference between Volkswagen's 320A and 790 LCD instrument clusters?

Are the Rotation Directions of Worm and Worm Wheel the Same?

How many brands has Geely acquired?

Is HUD Head-Up Display Practical?

What does DCDC mean in new energy vehicles?

Are Motorcycles Allowed on Hunan Expressways?

What are the precautions during driving?

Why is the area under the steering wheel of a new car exposed?

Are there any dedicated places for practicing driving?

What do the three car modes in English represent?

Does Burmester have 6.5-inch speakers?