What is the principle of Volkswagen's tire pressure monitoring?
3 Answers
Volkswagen's tire pressure monitoring principle utilizes data transmitted by the ABS system sensors to monitor the rotational speed of each wheel and changes in their rolling circumference. Tire pressure monitoring involves real-time automatic monitoring of tire pressure during vehicle operation, with alerts for tire leaks and low pressure to ensure driving safety. There are three commonly used tire pressure monitoring methods: Direct tire pressure monitoring: Direct tire pressure monitoring devices use pressure sensors installed in each tire to directly measure tire pressure. Wireless transmitters send pressure information from inside the tire to a central receiver module, which then displays the tire pressure data for each tire. The system automatically alerts when tire pressure is too low or there is a leak. Indirect tire pressure monitoring: When the pressure in a tire decreases, the vehicle's weight causes the rolling radius of that wheel to become smaller, resulting in a faster rotational speed compared to other wheels. By comparing the differences in rotational speeds between tires, the system monitors tire pressure. Indirect tire pressure alert systems essentially rely on calculating the rolling radius of tires to monitor pressure. Tire Pressure Monitoring System (TPMS): This system combines the advantages of the two aforementioned systems. It is equipped with direct sensors in two diagonally opposite tires and a 4-wheel indirect system. Compared to using only a direct system, this hybrid system can reduce costs and overcome the limitation of indirect systems, which cannot detect simultaneous low pressure in multiple tires. However, it still cannot provide real-time data on the actual pressure in all four tires like a direct system.
I've been researching Volkswagen models for quite some time. The tire pressure monitoring system mainly uses an indirect method, which is quite clever - it utilizes the wheel speed sensors from the ABS anti-lock braking system to detect rotational speed differences between tires. When a tire leaks and loses pressure, its diameter decreases and it rotates faster. The system compares rotation speeds and then illuminates a warning light to prompt inspection. This is more cost-effective than direct systems as it eliminates the need for maintenance of pressure sensors, though it can't display real-time specific pressure values. I once experienced the system alerting me on the highway, and upon immediately visiting a service station, found the tire pressure was indeed low, avoiding potential risks. I recommend developing a habit of checking the dashboard status before driving, and relying more on such warnings during long trips to enhance safety. Overall, this design offers a balanced, reliable and practical solution, adding an extra layer of security for daily driving.
As a seasoned Volkswagen driver with ten years of experience, I've gained a thorough understanding of its tire pressure monitoring system. The system uses ABS sensors to monitor wheel speed – when pressure is low, the wheel rotates slightly faster, triggering an audible alert. I find this method simple and user-friendly, requiring no additional hardware installation. Once during a cold winter startup, the warning light came on. Upon inspection, I found a nail in the tire and promptly inflated it to prevent issues. While not 100% accurate (it may give false alarms due to uneven tire wear), it effectively reminds me to regularly check and maintain proper inflation. I've also noticed that maintaining correct tire pressure saves fuel and extends tire life, so I trust this system for every trip.
