标准摘要
[中文适用范围]: 本文件提出了对车辆中使用的内置服务端口的要求,以符合增强蒸发排放要求。服务端口(阀门组件-蒸发排放罐净化线束服务)的主要功能是提供对蒸发排放系统的无损访问,以便测试系统的完整性。服务端口用于将气压或燃油蒸气引入系统或将其从系统中排出。此访问权限可用于以下评估: ?蒸发系统认证罐装载和吹扫?下线测试系统完整性 ?服务(例如 OBD MIL on)泄漏定位和维修验证?使用中的合规性测试罐装载和净化?检查/维护测试系统完整性和净化检查任务/主题服务端口是蒸发排放子系统的一个组件。它应是增强型蒸发排放子系统的组成部分,因此必须满足该系统的所有要求。分类 该服务端口的主要应用是客车@和轻型@中型和重型卡车,这些卡车需要配备 OBD II 系统并满足增强型蒸发排放标准。这包括打算在美国和加拿大或采用与美国和加拿大类似的增强蒸发排放法规的其他市场销售的汽油车辆@和双燃料(汽油/压缩天然气)车辆。 [外文原描述]: This document presents the requirements for a built-in service port to be used in vehicles intended to comply with Enhanced Evaporative Emissions Requirements. The primary function of the Service Port (Valve Assembly-Evaporative Emission Canister Purge Harness Service) is to provide non-destructive access to the evaporative emissions system to enable testing of the integrity of the system. The Service Port is used to introduce air pressure or fuel vapors into, or evacuates them out of, the system. This access may be used for the following evaluations:• Evaporative System CertificationsCanister Loading and Purging• End-of-line TestingSystem Integrity• Service (e.g. OBD MIL on)Leak Location and Repair Verification• In-Use Compliance TestingCanister Loading and Purging• Inspection/Maintenance TestingSystem Integrity and Purge CheckCross Reference: 40CFRPart86,J1113/1_201310,J1681_202305,J551/1_201501
英文名称Requirements for Built-in Service Port for On-Board Diagnostics