1、BRITISH STANDARD Automotive LPG systems Installation requirements The European Standard EN 12979:2002 has the status of a British Standard ICs 43.040.99: 23.020.20 BS EN 12979:2002 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12979:2002 Amd. No. National foreword Date
2、 Comments This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 27 February 2002 This British Standard is the official English language version of EN
3、 12979:2002. The UKparticipation in its preparation was entrusted to Technical Committee PVE/19, LPG containers and their associated fittings, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation,
4、 or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cr oss-r e fer enc e s The British Standards which
5、 implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not
6、 purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside fr
7、ont cover, the EN title page, pages 2 to 26, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 27 February 2002 ISBN O 580 39192 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12979 January 2002 ICs 43.
8、060.40 English version Automotive LPG-systems - Installation requirements Vhicules Gaz de Ptrole Liqufis (GPL) - Exigences dinstallation Systeme fr mit Flssiggas betriebene (LPG) Fahrzeuge - Ein bauvorschriften This European Standard was approved by CEN on 16 November 2001 CEN members are bound to c
9、omply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Managemen
10、t Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the offic
11、ial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION
12、 EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2002 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12979:2002 E EN 12979:2002 (E) Contents page Foreword 3 In
13、troduction . 4 1 2 3 4 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.7.1 5.7.2 5.7.3 5.7.4 5.7.5 5.7.6 5.7.7 5.8 5.9 5.10 5.1 1 5.12 5.13 5.14 5.1 5 5.1 5.1 5.15.2 6 Scope 4 Normative references 4 Terms and definitions 4 Symbols and abbreviated terms . 7 Installation requirements 7 General requirements 7 Connecti
14、ons to LPG-system . 7 LPG identification mark for M2 and M3 category vehicles . 8 Changes to the vehicle structure . 8 Container installation 8 Installation of more than one container 9 Components on or in the container . 9 General requirements 9 Remote-controlled service valve with excess flow valv
15、e on the container . 9 Pressure relief valve 9 Filling unit . 9 80 % stop valve 9 Level indicator I 0 Gas-tight housing 10 Gas pipes and hoses . 10 Gas connections between components of the LPG-system . 10 Remote-controlled shut-off valve . 11 Vehicle connector II Electrical installation . 11 Fuel s
16、election system 12 Pressure relief device 12 Installation manual 12 General 12 Contents of the installation manual . 12 Markings in case of retrofit installation . 13 Annex A (informative) Definitions of vehicle categories (extract from Directive 70/156) . 14 A.l International classification of vehi
17、cle categories . 14 A.2 Load and checking conditions . 16 Annex B (normative) Container fixing requirements up to a capacity of 150 litres 19 B.l General requirements 19 B.2 Container frame 20 Annex C (normative) Arrangement of approval markings . 21 C.l Type approval marking 21 C.2 International co
18、untry numbers . 22 Annex D (normative) Provisions regarding the identification for M2 and M3 category vehicles 23 Annex E (normative) Provisions regarding the identification of the service coupling . 24 Annex F (informative) Installation of more than one container . 25 Bibliography 26 2 EN 12979:200
19、2 (E) Foreword This European Standard has been prepared by Technical Committee CEN/TC 286 “Liquefied Petroleum Gas equipment and Accessories“, the secretariat of which is held by NSAI. This European Standard shall be given the status of a national standard, either by publication of an identical text
20、 or by endorsement, at the latest by July 2002, and conflicting national standards shall be withdrawn at the latest by July 2002. Annexes A and F are informative. Annexes B, C, D and E are normative. According to the CENKENELEC Internal Regulations, the national standards organizations of the follow
21、ing countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 3 EN 12979:2002 (E) Introduction Thi
22、s European Standard specifies requirements for the installation of equipment for the use of Liquefied Petroleum Gas (LPG) in automotive propulsion systems. This European Standard calls for the use of substances and procedures that can be injurious to health if adequate precautions are not taken. It
23、refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. It has been assumed in the drafting of this European Standard that execution of its provisions is entrusted to appropriately qualified and experienced people. 1 Scope
24、 This European Standard specifies the requirements for the installation of automotive LPG components that comply with prEN 12805 and prEN 12806. These requirements are to ensure safe operation of such components. This standard does not cover type approval of a LPG motor vehicle. NOTE Type approval r
25、equirements are covered in UN/ECE Regulations and EU legislation. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed
26、hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 589,A
27、utomotive fuels - LPG - Requirements and test methods. IS0 630, Structural steels - Plates, wide flats, bars, sections and profiles. IS0 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel - Part I: Bolts, screws and studs. prEN 12805, Automotive liquefied petroleum gas co
28、mponents - Tanks. prEN 12806, Automotive liquefied petroleum gas components - Other than tanks. EN 60529, Degrees of protection provided by enclosures (IP-code) (IEC 60529: 1989). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 test
29、pressure pressure to which the component or an assembly of components is subjected during the test procedure 4 EN 12979:2002 (E) 3.2 working pressure pressure under normal operating conditions 3.3 Liquefied Petroleum Gas (LPG) mixture of light hydrocarbons, gaseous under normal atmospheric condition
30、s which can be liquefied by increased pressure or decreased temperature, the main components are propane, propene, butane and butene isomers 3.4 automotive LPG motor fuel according to EN 589 3.5 container vessel used for the storage of automotive LPG 3.6 80 % stop valve device that limits the fillin
31、g of the container to 80 % of the water capacity NOTE the 80% stop valve can be combined with the filling unit. 3.7 level indicator device that shows the level of liquid in the container 3.8 pressure relief valve device that limits the pressure build up in the container 3.9 remote-controlled service
32、 valve device that allows or interrupts the LPG supply to the vaporizer/pressure regulator 3.10 excess flow valve device that interrupts the flow of LPG in case of a complete pipe fracture or hose rupture 3.1 1 gas-tight housing cover that protects the components fitted to the container and vents an
33、y leak to the venting tube 3.12 power supply bushing gas-tight electrical power conductor 3.13 non-return valve device that allows flow in one direction only 3.14 pressure relief device (.e. fusible plug) component protecting the container from bursting by venting the LPG content at a pre-set temper
34、ature 3.15 filling unit device that allows the container to be filled with LPG and prevents flow in the reverse direction NOTE The filling unit can be combined with the 80 % stop valve. 5 EN 12979:2002 (E) 3.16 venting tube duct that connects the gas-tight housing to the atmosphere by way of a flang
35、ed fitting (lead through) fitted to the chassis of the vehicle 3.17 electronic control unit device that controls the electrical power supply to the remote-controlled service valves 3.18 fuel rail pipe or flexible hose that supplies the fuel to the injection devices 3.19 vehicle connector device loca
36、ted at the outside of the vehicle used to refuel the vehicle NOTE installed inside the vehicle The vehicle connector can be combined with the filling unit and/or the 80% stop valve when the container is not 3.20 vehicle type vehicle or family of vehicles which have the following characteristics in c
37、ommon: - the manufacturers type designation; - the essential aspects of design and construction; - chassis/floor-pan; - installation of the LPG equipment. 3.21 type of automotive LPG-system LPG-system or family of LPG-systems which have the following characteristics in common: - automotive LPG-syste
38、m manufacturer; - pressure regulator/vaporiser type and manufacturer; - gas fuelling system type and manufacturer, .e. induction mixer, injector device, vapour or liquid, single or multipoint injection system : sensors; container type and manufacturer; container accessories type and manufacturer; co
39、ntainer frame; ECU (Electronic Control Unit) type by the same manufacturer; basic software as far as safety issues are concerned; installation manual; user manual. EN 12979:2002 (E) 4 Symbols and abbreviated terms EMC Electro-Magnetic Compatibility 9 acceleration due to gravity PRV Pressure Relief V
40、alve PRD Pressure Relief Device 5 Installation requirements 5.1 General requirements The installer of the LPG-system shall ensure that: - he possesses the expertise necessary for the proper installation of the LPG-system, - he has a quality control system that ensures that the installation of the LP
41、G-system meets the requirements of this standard, - he maintains records of the leak test and start up operations that are carried out after the installation, - the LPG-system installed in the vehicle shall function in such a manner that the pressure for which it has been designed and approved canno
42、t be exceeded, - all components of the automotive LPG-system comply with prEN 12805 and prEN 12806 - additional equipment required for the effective operation of the engine , not covered by prEN 12805 and prEN 12806 are installed only in parts of the LPG-system where the pressure is less than 20 kPa
43、, - all parts of the system are securely fastened, - the LPG-system has been tested and corrected for leaks, - the LPG-system is installed so that it is adequately protected against damage due to moving vehicle components, collision, grit or to the loading or unloading of the vehicle or the shifting
44、 of those loads, - all components are installed so that it is possible to inspect them and the relevant markings can be read. Excluding the container, no component of the LPG-system, including any protective material which form part of such components, shall project beyond the external surface of th
45、e vehicle, with the exception of the vehicle connector if this does not project more than 10 mm beyond the nominal line of the body panel. No component of the LPG-system, including its protective material if applicable, excluding the container, shall be installed below the lower edge of the vehicle.
46、 No component of the LPG-system shall be located within 100 mm of the exhaust or similar heat source, unless adequate shielding against heat is provided, - the installation of the automotive LPG-system complies with the relevant electro-magnetic compatibility (EMC) requirements. In case of a retrofi
47、t installation of the LPG-system, the manufacturer of the system shall supply installation instructions to the installer of the LPG-system. 5.2 Connections to LPG-system No appliances shall be connected to the propulsion system other than those strictly required for the proper operation of the engin
48、e of the motor vehicle. 7 EN 12979:2002 (E) Motor vehicles of categories M2, M3, N2, N3 and Ml (see annex A) having a maximum total mass of more than 3 500 kg fitted with a compartment heating system which is connected to the LPG-system shall be adequately protected against unintended gas escape and
49、 the operation of the LPG propulsion system shall not be affected. Cooking appliances connected to the vapour phase of the container shall be adequately protected against unintended gas escape and the operation of the LPG propulsion system shall not be affected. Heating and/or cooking system shall not be connected to the liquid phase of the container. The vapour take-off system shall be protected by a manual or remotely controlled shut-off valve incorporating an excess flow, fitted to the container. If a mono fuel vehicle with a petrol limp home system is equipped with a servi
