A pneumatic tire with reduced rolling resistance

Abstract

The invention discloses a pneumatic tire with reduced rolling resistance, which comprises a tread, a sidewall and a bead. The apex and the traveler are arranged, the height H of the apex satisfies: 10mm≤H≤15mm, the turning-up height H1P of the ply around the apex and the traveler satisfies: 25mm≤H1P≤35mm, adopting low The apex height and low turn-up cord height are designed to reduce the weight of the tire itself and rolling resistance while reducing the amount of apex and cord ply used, and through the ratio of the apex height to the cord turn-up height, as well as The tire section height ratio, while reducing the rolling resistance of the tire, also increases the flex-resistant area of ​​the tire shoulder and bead, which improves the heat dissipation performance and fatigue resistance of the tire flex-resistant area, thus Improve the durability of tires and ensure the safety, economy and comfort of tires.

Description

Technical field [0001] The present invention relates to the field of tire technologies, and more particularly to a pneumatic tire that reduces rolling resistance. Background technique [0002] When the vehicle is running, the load applied to the tire can cause the tire deformed because the rubber formulation for the tire is used to have viscoelastic characteristics, so when the tire is deformed, this type of material will lose partial energy, loss. This part of the energy is converted in hot form, and the tire repeated deformation constantly causes energy loss, which is the main reason for the cause of tire rolling resistance, accounting for approximately 90% -95 of all of the tires, for a car, energy is By fuel supply, the tire rolling resistance directly affects fuel consumption. During the driving process, various driving resistance will produce a variety of driving resistance, of which nearly 80% are air resistance, and the remaining 20% ​​are rolling resistance; [0003] If ...

AI Technical Summary

Problems solved by technology

[0003] It is not difficult to simply reduce the rolling resistance, but some properties of the tire will always be sacrificed while reducing the rolling resistance. Among the three major properties of the tire: wear resistance, rolling resistance, and wet skid resistance, one or two of them are often improved performance will cause the loss of the third performance, so it is technically difficult to solve the difficult problem in order to achieve all three. The purpose of this invention is to minimize the impact on the wear resistance and wet skid resistance of the tire. , providing a pneumatic tire with reduced rolling resistance

Images