内燃机空气和真空系统用橡胶软管和管材 规范

[中文适用范围]： 本文件规定了内燃机各种空气和真空系统中使用的橡胶软管和管材的要求。本文件不涵盖卡车和拖车中用于直接动力制动器驱动的软管，也不涵盖乘客舱内的进气口和管道。最高温软管通常用于涡轮增压器应用。所有软管和管材在低至 −40°C 的温度下仍可使用。注：尽管通常使用术语“真空”，但实际上该应用是指用于驱动或监控各种发动机系统组件的减压应用。由于特殊的安装和应用，管材或软管输送的空气可以是清洁的、无污染物的，但也可能含有油、燃料及其蒸气作为污染物。 [外文原描述]： This document specifies requirements for rubber hoses and tubing for use in the various air and vacuum systems found on internal combustion engines. This document does not cover hoses used for direct power-brake actuation in trucks and trailers, nor for air intakes and ducting within the passenger compartment. The highest-temperature hoses are generally used for turbocharger applications. All hoses and tubing remain serviceable down to −40 °C. NOTE Although the term vacuum is generally used, in reality the application is one of reduced air pressure used for the purposes of actuation or monitoring of the various engine-system components. The air carried by the tubing or hoses can be clean and free of contaminants but can also contain oil, fuel and their vapours as contamination, due to the particular installation and application.