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QC/T 247-2017 PDF in English

QC/T 247-2017 (QC/T247-2017, QCT 247-2017, QCT247-2017)
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Standards related to: QC/T 247-2017

QC/T 247-2017: PDF in English (QCT 247-2017)

QC/T 247-2017
ICS 43.080.01
T 47
Replacing QC/T 247-2002
Technology requirements for fuel-gas system for LPG
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Announcement ... 3 
Foreword ... 9 
1 Scope ... 11 
2 Normative references ... 11 
3 Terms and definitions ... 12 
4 Technical requirements ... 13 
References, names and dates of implementation of 42 automotive industry
No. Standard reference Standard name
reference being
Date of
250 QC/T 776-2017 Motor caravan QC/T 776-2007 2017-07-01
251 QC/T 1051-2017 Coach car 2017-07-01
252 QC/T 1052-2017 Communication vehicle 2017-07-01
253 QC/T 1053-2017 Concrete spraying vehicle 2017-07-01
254 QC/T 1054-2017 Tunnel cleaning vehicle 2017-07-01
255 QC/T 1055-2017 Drainage and rescue vehicle 2017-07-01
256 QC/T 218-2017
specifications for
steering column
upper combined
switch of automobile
QC/T 218-1996 2017-07-01
257 QC/T 1056-2017
requirements and test
methods for
automotive dual
clutch automatic
258 QC/T 245-2017
specifications for
isolated plant of
gas (CNG)
QC/T 245-2002 2017-07-01
259 QC/T 247-2017
specifications for
isolated plant of
liquefied petroleum
QC/T 247-2002 2017-07-01
260 QC/T 1057-2017 Car snow chains 2017-07-01
261 QC/T 1058-2017 Car fingerprint identification device 2017-07-01
273 QC/T 1060-2017
hexagonal flower
flange bolts
274 QC/T 1061-2017
Road transport
lightweight fuel tank
vehicle anti-overflow
275 QC/T 1062-2017
Road transport
lightweight fuel tank
vehicle unloading
276 QC/T 1063-2017
Road transport
lightweight fuel tank
vehicle oil and gas
recovery components
277 QC/T 1064-2017
Road transport
flammable liquid
dangerous goods
tank vehicle -
breathing valve
278 QC/T 1065-2017
Road transport
flammable liquid
dangerous goods
tank vehicle -
manhole cover
279 QC/T 789-2017
requirements and
bench test methods
of automobile electric
vortex retarder
QC/T 789-2007 2017-07-01
280 QC/T 316-2017
Bench test methods
of fatigue strength for
automobile service
QC/T 316-1999 2017-07-01
281 QC/T 201-2017
Nylon pipe joint size
for automobile air
QC/T 201-1995 2017-07-01
282 QC/T 1066-2017
requirements of cable
assembly for vehicle
parking brakes and
bench test method
This standard was drafted in accordance with the rules given in GB/T 1.1-2009
"Directives for standardization - Part 1: Structure and drafting of standards".
This standard non-equivalently adopts the relevant provisions of the European
Economic Commission of the United Nations ECFE R67 "Unified requirements
on the approval of LPG special devices and motor vehicles equipped with LPG
special devices" (effective from 2000-08-04).
This standard replaces QC/T 247-2002 "Technical specifications for isolated
plant of liquefied petroleum gas".
As compared with QC/T 247-2002, the main changes in this standard are as
- In the normative references, DELETE the standards SY 7548, QC/T 672,
QC/T 675; ADD the standards GB 19159, GB 20912, QC/T 745, QC/T 769,
QC/T 809, QC/T 917, GB/T 5653 , GB 7258, GB 19239.
- ADD the terms and definitions for "fuel-gas system, leakage alarm device".
- In the General requirements, ADD the requirements that “the connection
interface of fuel-gas system’s components shall meet the requirements of
GB/T 5653; the installation of gas system’s components on vehicles shall
meet the requirements of GB 7258, GB/T 19239 and other standards".
- MODIFY the technical requirements of "4.2.1 / 4.2.2 Components contained
in fuel-gas system for LPG vehicles".
- ADD the technical requirements for such components as "4.3.1 Filling
receptacle; 4.3.3 Liquid level meter; 4.3.7 LPG pipeline; 4.3.9 Leakage
alarm device; 4.3.10 Harness assembly; 4.3.12 Fuel transfer switch".
- MODIFY the technical requirements for such components as "original 4.3.1
/ current 4.3.2 Vehicle gas cylinders and vehicle gas cylinder accessories;
original 4.3.5 / current 4.3.4 Stop valve; original 4.3.6 / current 4.3.5
Evaporative regulator".
- DELETE the technical requirements for such components as the "the
original 4.3.2 Electric, pneumatic and hydraulically driven components; the
original 4.3.3 Pressure sensor; the original 4.3.8 Fuel selection system and
electrical wiring harness".
This standard was proposed by and shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
Technology requirements for fuel-gas system for LPG
1 Scope
This standard specifies the definition and technical requirements for fuel-gas
system (hereinafter referred to as gas systems) for LPG vehicles.
This standard applies to the fuel-gas systems that use liquified petroleum gas
(hereinafter referred to as LPG) for automobiles that meets the requirements of
GB 19159 and has a rated working pressure of 2.2 MPa.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 17895 Natural gas vehicle and liquefied petroleum gas vehicle -
GB 17259 Steel cylinders for the liquefied petroleum gas for vehicles
GB 18299 Automotive LPG steel cylinder multivalve
GB/T 18364 Filling receptacle of LPG vehicle
GB 19159 Automotive liquefied petroleum gases
GB 19239 Mounting requirements of special equipment for gas vehicle
GB 20912 Vaporizer/pressure regulator of LPG vehicle
GB/T 5653 Flared couplings - Specification
GB 7258 Safety specifications for power-driven vehicles operating on roads
QC/T 625 Metallic coatings and conversion coatings for automobiles
QC/T 673 Solenoid valve of LPG vehicles
QC/T 745 Rubber pipelines for liquefied petroleum gas vehicles
4 Technical requirements
4.1 General requirements
4.1.1 The gas system shall be manufactured in accordance with the product
drawings and other technical documents approved by the prescribed
procedures; meanwhile it shall comply with the provisions of this standard.
4.1.2 The working environment temperature range that the gas system shall be
able to adapt is as follows:
a) Installed in the engine compartment, -40 °C ~ 120 °C;
b) Install in other parts, -40 °C ~ 85 °C.
4.1.3 Components in the gas system whose normal performance and safety
functions are affected by LPG fuel characteristics, high pressure or vibration,
need to meet GB 17259, GB 18299, GB/T 18364, GB 20912, QC/T 673, QC/T
745, QC/T 769, QC/T 809, QC/T 917 and other standards on relevant parts and
4.1.4 The connection interface of gas system components shall meet the
requirements of GB/T 5653; the installation of gas system components on
vehicles shall meet the requirements of GB 7258, GB 19239 and other
4.1.5 Of the gas system components, the materials in contact with LPG shall
be compatible with LPG. If the metal material used is ferrous metal, it shall take
anticorrosive measures such as electroplating, chemical treatment or painting.
The coating and chemical treatment layer shall conform to QC/T 625.
4.2 System requirements
4.2.1 The fuel-gas system for LPG vehicles shall include at least the following
a) Filling receptacle;
b) Gas cylinders for vehicles;
c) Gas cylinder accessories for vehicles;
d) Level gauge;
e) Stop valve;
f) Solenoid valve;
q) Speed sensor.
4.2.3 In one of the following cases, the gas system shall be able to automatically
cut off the supply of LPG.
a) The ignition switch is not turned on;
b) The engine is not running;
c) The fuel line is broken, falling off, etc.
4.3 Component requirements
4.3.1 Filling receptacle
At least one filling receptacle shall be installed on a CNG vehicle. The dust
cover on the filling receptacle shall be easily fixed on the vehicle. The filling
receptacle shall meet the requirements of GB/T 18364.
4.3.2 Gas cylinders for vehicles and gas cylinder accessories for vehicles The gas cylinder shall be equipped with the following accessories:
limited filling valve, level gauge, safety valve, over-flow valve, electromagnetic
network, etc. They may be separate or combined into an integrated valve. If necessary, the following accessories can be equipped: fuel pump, fuel
pump wire bushing, pressure relief device, check valve equipped inside the gas
cylinder. The pressure relief device shall be installed on the LPG vessel or in the
LPG vessel; meanwhile the fuel shall be in a gaseous position. The over-flow valve shall have the function of resetting after over-flow
protection. When the fuel is at the minimum level and the engine is still running, the
heat dissipation of the fuel pump shall not cause the pressure relief valve to
4.3.3 Level gauge
The liquid level sensing mechanism of the liquid level gauge in the gas cylinder
and the liquid level display part outside the gas cylinder shall be non-contact
4.3.4 Stop valve
When two or more gas cylinders are installed, it shall set a shut-off valve
between the gas cylinders and the evaporative pressure regulator. The stop
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.