All steel low rolling resistance tire

Abstract

The invention provides an all-steel low rolling resistance tire, which comprises a tread, a carcass, a belt layer, and an outer contour of the tread and an inner contour of the carcass. The tread is provided with four circumferential main grooves along the tire circumferential direction. The groove divides the tire from the outside to the inside in turn into inner shoulder block, inner central block, middle block, outer central block and outer shoulder block, the distance W between the tire carcass at the width of the tire section, and the height H of the inner contour of the carcass , the height of the horizontal axis H 1 , The angle a between the tangent line between the second belt layer and the vertical line of the carcass and the center line of the tread has 0.75≤H / W≤0.80, 0.50≤H 1 / H≤0.60, 55°≤a≤70°. In the case of improving the wear performance, the invention improves the tread pattern, the outer contour of the tread and the inner contour of the carcass to improve the rigidity of the tread, improve the ground contact condition, realize uniform tire wear and reduce rolling resistance.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a pneumatic tire realizing uniform wear and low rolling resistance. Background technique [0002] Due to the implementation of the new national standard GB1589-2016, the load of trucks on the market has decreased. Due to the formulation of environmental protection and vehicle emission standards, low rolling resistance performance of tires is also required to reduce fuel consumption. In order to increase the load capacity and fuel economy, major truck manufacturers are working on reducing the weight of vehicles and improving fuel economy, which in turn requires lightweight tires and low rolling resistance performance. The three performances of low rolling resistance, wear resistance and wet skid resistance are the "devil triangle" of tires. In the case of increased wear, reducing rolling resistance is a technically difficult problem to solve. [0003] In the prior art, the rolling ...

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Problems solved by technology

[0003] In the existing technology, the rolling resistance is generally reduced by reducing the groove depth or adjusting the tread formula. If the groove depth is reduced, the corresponding pattern wear volume will be reduced. However, adjusting the tread formula may cause the tread pattern to be cut-resistant

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