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QC/T 247-2017 English PDF (QCT247-2017)

QC/T 247-2017 English PDF (QCT247-2017)

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QC/T 247-2017: Technology requirements of fuel-gas system for LPG vehicles

This standard specifies the definition and technical requirements for fuel-gas system for LPG vehicles. This standard applies to the fuel-gas systems that use liquified petroleum gas for automobiles that meets the requirements of GB 19159 and has a rated working pressure of 2.2 MPa.
QC/T 247-2017
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 43.080.01
T 47
Replacing QC/T 247-2002
Technology requirements for fuel-gas system for LPG
vehicles
ISSUED ON: JANUARY 09, 2017
IMPLEMENTED ON: JULY 01, 2017
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
Annex:
References, names and dates of implementation of 42 automotive industry standards
No. Standard reference Standard name
Standard
reference being
substituted
Date of
implementation
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
Technical
specifications for
steering column
upper combined
switch of automobile
QC/T 218-1996 2017-07-01
257 QC/T 1056-2017
Technical
requirements and test
methods for
automotive dual
clutch automatic
transmission
assembly
2017-07-01
258 QC/T 245-2017
Technical
specifications for
isolated plant of
compressed-natural-
gas (CNG)
automobile
QC/T 245-2002 2017-07-01
259 QC/T 247-2017
Technical
specifications for
isolated plant of
liquefied petroleum
gas
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
Automotive
hexagonal flower
flange bolts
2017-07-01
274 QC/T 1061-2017
Road transport
lightweight fuel tank
vehicle anti-overflow
system
2017-07-01
275 QC/T 1062-2017
Road transport
lightweight fuel tank
vehicle unloading
valve
2017-07-01
276 QC/T 1063-2017
Road transport
lightweight fuel tank
vehicle oil and gas
recovery components
2017-07-01
277 QC/T 1064-2017
Road transport
flammable liquid
dangerous goods
tank vehicle -
breathing valve
2017-07-01
278 QC/T 1065-2017
Road transport
flammable liquid
dangerous goods
tank vehicle -
manhole cover
2017-07-01
279 QC/T 789-2017
Performance
requirements and
bench test methods
of automobile electric
vortex retarder
assembly
QC/T 789-2007 2017-07-01
280 QC/T 316-2017
Bench test methods
of fatigue strength for
automobile service
brake
QC/T 316-1999 2017-07-01
281 QC/T 201-2017
Nylon pipe joint size
for automobile air
brake
QC/T 201-1995 2017-07-01
282 QC/T 1066-2017
Performance
requirements of cable
assembly for vehicle
parking brakes and
bench test method
2017-07-01
Foreword
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 follows:
- 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
vehicles
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 -
Vocabulary
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 components.
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
standards.
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 components.
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 4.3.2.1 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. 4.3.2.2 If necessary, the following accessories can be equipped: fuel pump, fuel pump wire bushing, pressure relief device, check valve equipped inside the gas cylinder.
4.3.2.3 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.
4.3.2.4 The over-flow valve shall have the function of resetting after over-flow protection.
4.3.2.5 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 open.
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 type.
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

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