概述这些规范是通用的，并已作为SAE标准主要用于传统汽车型发动机。这一类别包括乘用车、轻型或中型卡车、拖拉机、工业发动机以及一些压缩机。对于重型汽油和柴油发动机，可能需要偏离这些标准。”当偏离表1时，应符合活塞槽规格，而不是环规格。

General-These specifications are in general use and have been adopted as an SAE Standard primarily for conventional automotive type engines. This category includes passenger car and light or medium duty truck, tractor, and industrial engines, as well as some compressors. For heavy duty gasoline and diesel engine it may be necessary to depart from these standards. 'When deviations from Table 1 are made t.hey should be in the piston groove specifications and not in the ring specifications.