INFLATION PRESSURE LOSS IN TUBELESS TIRES - EFFECTS OF TIRE SIZE, SERVICE, AND CONSTRUCTION

被引:11
作者
CODDINGTON, DM
机构
来源
RUBBER CHEMISTRY AND TECHNOLOGY | 1979年 / 52卷 / 05期
关键词
Compendex;
D O I
10.5254/1.3535255
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Maintaining proper inflation pressure in tubeless tires, particularly radials, is critical to maximum tread wear life, durability, and minimum rolling resistance for vehicle fuel economy. In the reported experiments, inflation pressure loss rates have been measured for varied commercial production tire constructions and sizes under static, constant temperature conditions. Pilot plant built radial passenger tires with varied innerliners have been tested for inflation loss rate, both statically and dynamically. A model equation has been developed to relate inflation pressure retention (IPR) to principal parameters of tire geometry, service and innerliner construction. Correlation of predicted air retention with actual performance is promising. A tire immersion test procedure has been employed to demonstrate air loss via migration and to study its paths. These studies indicate that properly fitted tubeless tires, free of mechanical leaks, can still have significant pressure loss via permeation; that the rate of loss increases as tire size is reduced; and that an ultra-low permeability innerliner can greatly improve tire inflation retention under static and dynaservice conditions.
引用
收藏
页码:905 / 919
页数:15
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