What is The Relationship between Tire Pressure and Automobile Performance?(two)

There is a strong relationship between tire pressure and automobile performance. So what is the relationship, and how to check tire pressure. 

The Relationship between Tire Pressure and Automobile Performance

Tire pressure is inseparable from the automobile performance. Here we will introduce the relationship between tire pressure and automobile performance.

1. Relationship between tire pressure and automobile handling stability

The side bias stiffness is an important parameter that determines the stability of the vehicle. The tire should have a high side bias stiffness to ensure good steering stability of the vehicle. Tire pressure is an important factor affecting the side bias stiffness. The higher the tire pressure, the greater the side bias stiffness. However, the stiffness does not change after the air pressure is too high.

2. Relationship between tire pressure and power cycling

The so-called power cycling refers to the phenomenon of drag and slip of the tire due to different rolling radius of the tire on different axes of the vehicle, causing power loss. The tire pressure affects the deformation of the tire, and the tire deformation affects the rolling radius, which affects the travel speed. For two-axle cars, the tire pressure must be selected according to the front and rear axle loads to ensure that the tires have the same rolling radius and avoid power cycling.

3. Relationship between tire pressure and automobile braking performance

The automobile ground braking performance first depends on the braking force of the brake, but at the same time, it is limited by the ground attachment conditions. Therefore, only when the vehicle has sufficient braking force and the ground provides high adhesion, sufficient ground braking force can be obtained. By appropriately reducing the tire pressure, the tire deformation can be increased, and the contact surface between the tire and the ground can be increased, which can improve the adhesion and ensure good braking performance of the automobile. 

4. Relationship between tire pressure and automobile passability

The passability of the automobile depends on many factors, among which the tire is an important factor, including the pattern, diameter, and air pressure of the tire. For the same tire, the required tire pressure is different when passing through different road surfaces. When working on a good road surface, try to make the air pressure reach the standard value. When driving on a soft road, try to make the air pressure lower, otherwise it will easily cause the tire to slip in place.

5. Other relationship

Tire pressure is an important factor affecting tire service life and economy. Unreasonable tire pressure selection will cause power cycling, which in turn will increase tire wear and affect service life. At the same time, considering the impact on power, it is necessary to select the appropriate tire pressure to extend tire life and improve economy. 

Tire Pressure Monitoring Method

1. Direct tire pressure monitoring: The connected tire pressure monitoring device directly measures the air pressure of the tire by using a pressure sensor installed in each tire, and transmits the pressure information from the inside of the tire to the central receiver module by using a wireless transmitter. Then, each tire pressure data is displayed. When the tire pressure is too low or leaks, the system will automatically alarm.

2. Indirect tire pressure monitoring: The working principle of indirect tire pressure monitoring is: when the air pressure of a tire is reduced, the weight of the vehicle will make the rolling radius of the wheel smaller, resulting in faster rotation than other wheels. By comparing the difference in rotational speed between the tires, the purpose of monitoring the tire pressure is achieved. The indirect tire alarm system actually relies on calculating the rolling radius of the tire to monitor the air pressure.

3. Tire pressure monitor system (TPMS): It combines the advantages of both systems. It is equipped with direct sensors in two mutually diagonal tires and equipped with a 4-wheel indirect system. Compared to all direct systems, this hybrid system can reduce costs and overcome the shortcomings of indirect systems that cannot detect multiple tires with low air pressure. However, it still does not provide real-time data on the actual pressure of all four tires as in the direct system.