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GB 19239-2022: Installation specification for gas system of gas vehicles
GB 19239-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Replacing GB 19239-2013, GB/T 20734-2006
Installation Specification for Gas System of Gas Vehicles
ISSUED ON: AUGUST 31, 2022
IMPLEMENTED ON: JANUARY 1, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Installation Requirements ... 6
5 Test Methods ... 10
6 Inspection Rules ... 14
7 Implementation Transition Period ... 15
Installation Specification for Gas System of Gas Vehicles
1 Scope
This document specifies the installation requirements, test methods, inspection rules and
implementation transition period of the gas system of gas vehicles.
This document is applicable to gas vehicles that can use compressed natural gas (hereinafter
referred to as CNG) / liquefied natural gas (hereinafter referred to as LNG) / liquefied petroleum
gas (hereinafter referred to as LPG) as fuel.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in this text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB 8410 Flammability of Automotive Interior Materials
GB/T 13005 Terminology of Gas Cylinders
GB/T 17676 Natural Gas Vehicle and Liquefied Petroleum Gas Vehicle - Identification Marks
GB/T 17895 Natural Gas Vehicle and Liquefied Petroleum Gas Vehicle - Vocabulary
GB/T 34510 Liquefied Natural Gas Cylinders for Vehicles
GB/T 36123-2018 Technical Requirements for Gas Leakage Alarm Device of Gas Vehicle
QC/T 245-2017 Technology Requirements of Fuel-gas System for CNG Vehicles
QC/T 247-2017 Technology Requirements of Fuel-gas System for LPG Vehicles
QC/T 755-2020 Technical Requirements of Fuel-gas System for LNG Vehicles
ISO 6487:2015 Road Vehicles - Measurement Techniques in Impact Tests - Instrumentation
3 Terms and Definitions
What is defined in GB/T 17895, GB/T 13005 and GB/T 34510, and the following terms and
definitions are applicable to this document.
3.1 Refueling Device
Refueling device refers to a component connected with the gas (liquid) refueling gun or gas
(liquid) returning gun when refueling gas (liquid).
4 Installation Requirements
4.1 General Requirements
4.1.1 The gas system for CNG vehicles shall satisfy the requirements of Chapter 4 in QC/T
245-2017. The gas system for LPG vehicles shall satisfy the requirements of Chapter 4 in QC/T
247-2017. The gas system for LNG vehicles shall satisfy the requirements of Chapter 5 in QC/T
755-2020.
4.1.2 The installation of the gas system of gas vehicles shall comply with the requirements of
the design documents of finished vehicles, and shall be assembled in accordance with the
product drawings and technical documents approved by the prescribed procedures.
4.1.3 The installation of the gas system of gas vehicles shall satisfy the requirements of the
strength and rigidity of the vehicle bearing parts and other relevant safety components.
Installation methods that may result in a reduction in the strength and rigidity of the vehicle
bearing parts shall not be adopted. The gas system shall not be used as a bearing part.
4.1.4 The gas vehicles shall be marked with signs in accordance with the stipulations of GB/T
17676 in a prominent position.
4.1.5 After installation, the gas system of gas vehicles shall satisfy the following requirements:
---the gas cylinder shall not be deformed or worn;
---all components shall have anti-loosening measures, and there shall be no loosening or
falling off;
---After the system is tested in accordance with the method specified in 5.1, there shall be
no leakage. When the LNG gas system is tested, the cold test shall be carried out first;
---The various components of the gas system shall not be installed within a range of 100
mm from heat sources, such as: exhaust pipe and exhaust after-treatment tank, etc.
When the distance between relevant components and heat sources is between 100 mm
and 200 mm, fixed and reliable heat insulation devices shall be set up.
4.2 Gas Cylinder
4.2.1 The gas cylinder shall be installed away from heat sources, and shall be effectively
separated from the driver’s cab or passenger compartment. When the gas cylinder cannot be
effectively separated from the driver’s cab or passenger compartment, sealing boxes (sealing
parts around the gas cylinder accessories), corrugated pipes and ventilation ports shall be used
to discharge the gas that may leak out of the vehicle. The exhaust direction of the ventilation
port shall be within the range of 45 cone with the ground. The distance from the ventilation
specified in 5.3.2, the relative displacement between the gas cylinder or gas cylinder
set and the fixed point of its fixing seat shall not be greater than 13 mm. Among them,
the single gas cylinder and the single gas cylinder fixing seat in the gas cylinder set
shall be tested in accordance with the method specified in 5.3.2.2; the installation of the
fixing seat for the vertical arrangement of the gas cylinder set shall be tested in
accordance with the method specified in 5.3.2.3. If the gas cylinder set is horizontally
arranged and multiple gas cylinders are fixed by one fastening belt, the installation of
the fixing seat shall be tested in accordance with the method specified in 5.3.2.4; if the
gas cylinder fastening belt only fixes one gas cylinder, it shall be tested in accordance
with the method specified in 5.3.2.2.
4.3 Refueling Device
4.3.1 The refueling device shall be installed with a dust cover and additional protective
measures. The protective measures include additional protective fences, partitions, protective
covers or the protective mechanism of the vehicle itself.
4.3.2 The refueling device shall be arranged at a position that is easy to operate and shall not
exceed the outline of the vehicle.
4.3.3 After the gas (liquid) refueling port is installed, there shall be no leakage after being
inspected in accordance with the test method specified in 5.4.
4.4 Piping
4.4.1 Rigid piping shall be neatly and reasonably arranged, and shall not interfere with adjacent
components. The fixed spacing shall not be greater than 600 mm. If the piping is in contact with
adjacent components, or passes through holes, protective measures shall be taken to ensure that
the piping is not worn. When two components are connected by rigid connection piping, it shall
be designed as an “O”, “S” or “U” shape, which can eliminate the effects of thermal expansion
and contraction, and vibration; the radius of curvature of the piping center shall not be less than
5 times the outer diameter of the piping.
4.4.2 Components that can generate relative displacement shall be connected by flexible piping,
and the others shall be connected by rigid piping. Flexible piping shall be fixed by resilient clips
before and after each bend. The fixed spacing of flexible piping shall be not greater than 300
mm; when fixing, vibration reduction and anti-wear measures shall be considered. The direction
of the piping shall be smooth, and there shall be no interference or discount.
4.4.3 The pipe ...