GB19239-2022
Installation specification for gas system of gas vehicles
燃气汽车燃气系统安装规范
GB 19239-2022 is a current mandatory Chinese national standard for Installation specification for gas system of gas vehicles. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jan 1, 2023.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the installation of gas systems in gas vehicles that use Compressed Natural Gas (CNG), Liquefied Natural Gas (LNG), or Liquefied Petroleum Gas (LPG) as fuel. It specifies installation requirements, testing methods, and inspection rules for these systems. It is mandatory for manufacturers producing gas-powered vehicles for the Chinese market. The standard replaces the previous versions GB 19239-2013 and GB/T 20734-2006.
Technical requirements
The standard outlines comprehensive installation requirements to ensure safety and reliability. For cylinders, it mandates reliable fixation without compromising structural integrity, specific longitudinal installation rules for LNG cylinders, and strict protective measures against collisions and heat sources. Cylinders must be effectively separated from the passenger cabin, or equipped with sealed boxes and ventilation interfaces to safely discharge any leaked gas. Regarding pipelines and refuelling devices, the standard requires rigid pipelines to be arranged logically with specific curvature radii, while flexible pipelines must be used between components with relative displacement. Refuelling devices must be equipped with dust covers and protective measures, positioned for easy operation without exceeding vehicle boundaries. Furthermore, LNG vent pipes must be located at the vehicle's top or tail, with structures preventing rainwater ingress and gas accumulation. The standard also details requirements for pressure and temperature displays, manual shut-off valves, and electrical systems. It mandates the installation of gas leak alarm devices compliant with GB/T 36123-2018, with detectors placed in areas with high leakage and accumulation risks. Electromagnetic shut-off valves must be installed between the cylinder and the engine, positioned away from electrical equipment.
Testing methods
The standard specifies several critical testing methods to verify installation integrity. The Gas System Leakage Test evaluates CNG, LPG, and LNG systems under specific high and low-pressure conditions using either neutral foaming liquid or explosion-proof digital detectors. The Cylinder Installation Strength Test includes both dynamic and static evaluations; dynamic tests apply specific longitudinal, lateral, and vertical accelerations based on vehicle categories (M1, M2, M3, N1, N2, N3) as per ISO 6487:2015, while static tests apply forces equivalent to 8 times the cylinder's filled mass. Additionally, the Refuelling Port Installation Strength Test applies specific tensile force and torque to ensure structural stability.
FAQs
What products are regulated under GB 19239-2022?
GB 19239-2022 regulates the installation of gas systems in vehicles using CNG, LNG, or LPG as fuel. This includes the installation of cylinders, pipelines, refuelling devices, and safety devices like leak alarms.
Are there any updates from the previous version of GB 19239?
Yes, GB 19239-2022 replaces GB 19239-2013 and GB/T 20734-2006. Key updates include the addition of LNG cylinder longitudinal installation requirements, low-temperature pipeline specifications, LNG vent pipe rules, and specific testing requirements for 35MPa CNG systems and LNG systems.
What are the implementation transition periods for GB 19239-2022?
For new vehicle type approval applications, the standard is effective immediately from the implementation date. For vehicle models that have already obtained type approval, the standard becomes mandatory starting from the 7th month after the implementation date.
The summary above provides a high-level overview of GB 19239-2022. To ensure complete compliance for your gas vehicles entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 19239-2022 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- T40
- ICS
- 43.020
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- National Technical Committee on Automobiles of Standardization Administration of China
Relationships
Replaces:GB 19239-2013, GB/T 20734-2006