GB/T 44851.11-2025 Road vehicles—Liquefied natural gas(LNG) fuel system components—Part 11:Fittings

Scope

This document specifies the technical requirements for the connectors used in the liquefied natural gas (LNG) fuel systems of road vehicles and describes the test methods. This document applies to the vehicle types defined in GB/T 3730.1. This document does not apply to the following items: - a) gas cylinders; - b) fixed gas engines; - c) container fixing parts; - d) electronic fuel control systems; - e) filling ports. The components not covered by this document shall be implemented in accordance with the relevant standards and undergo corresponding functional tests. Unless otherwise specified, the pressures mentioned in this document are considered gauge pressures. The working pressure of natural gas used as fuel in this document is 1.6 MPa. The pressure shall be adjusted by an appropriate factor (proportion) to adapt to other working pressures. For example, for a system with a working pressure of 2 MPa, the pressure should be multiplied by 1.25.

Development Information

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