SAE J 1928-2012 Devices Providing Backfire Flame Control for Gasoline Engines in Marine Applications《提供回火火焰控制的船用汽油发动机装置》.pdf
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1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2012 SAE International All rights reserved. No part of this pub
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4、(outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1928_201201SURFACEVEHICLESTANDARDJ1928 JAN2012 Issued 1989-06Revised 2012-01Superse
5、ding J1928 JUL2005 Devices Providing Backfire Flame Control for Gasoline Engines in Marine Applications RATIONALE“Variations in backfire testing results for similar systems with different throttle bodies or carburetors have lead the committee to recommend the following changes to Section 5.1.3 and S
6、ection 5.2.1.“ Modify the text of section 5.2.1 to require each combination of engine displacement, intake design, throttle body and arrestor to be independently evaluated. And change 5.1.3 to read “design or construction or application (i.e. Throttle Body)” 1. SCOPE This SAE Standard covers the min
7、imum requirements for design, construction, and testing of devices to prevent the propagation of backfire flame from within the gasoline engine to the surrounding atmosphere. 1.1 Purpose The purpose of this document is to recommend a procedure for testing and establishing acceptable flame arresting
8、characteristics of the devices. 1.2 Relationship of SAE Standard to ISO Standard This document is similar to ISO 13592 but has some technical differences. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherw
9、ise indicated, the latest issue of SAE publications shall apply. 2.1.1 ASTM Publication Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.orgASTM B 117 Standard Practice for Operating Salt Spray (Fog) Apparatus SAE
10、J1928 Revised JAN2012 Page 2 of 9 2.1.2 Underwriters Laboratories Publication Available from Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096, Tel: 847-272-8800, UL 94 Tests for Flammability of Plastic Materials for Parts in Devices and Appliances 2.2 Related Publication
11、 The following publication is provided for information purposes only and is not a required part of this SAE Technical Report.2.2.1 ISO Publication Available from International Organization for Standardization, 1, rue de Varembe, Case postale 56, CH-1211, Geneva 20, Switzerland, Tel: +44-22-749-01-11
12、, www.iso.org or from American National Standards Institute, 25 West 43rdStreet, New York, NY 10036-8002, Tel: 212-649-4900, www.ansi.org.ISO 13592 Small craft - Backfire flame control for petrol engines. 3. DEFINITIONS 3.1 FLAME ARRESTER An assembly, consisting of one or more component parts, desig
13、ned and constructed as to prevent the propagation of backfire flame from within the carburetor or throttle body and engine air intake system to the surrounding atmosphere. 3.2 ENGINE AIR AND FUEL INDUCTION SYSTEM Either a particular method of introducing fuel into the engine or a design of air intak
14、e passages to the cylinders that provides protection equivalent to that of an effective backfire flame arrester. 3.3 NON-METALLIC MATERIALS Rubber, plastics, and adhesives used in the construction of flame arresters and/or induction systems. 4. GENERAL 4.1 Flame Arrester 4.1.1 The flame arrester ass
15、embly shall include a permanent and prominent means of identification as described in Section 7. 4.1.2 A carburetor or throttle body adaptor, if required, shall be attached permanently to the flame arrester. Examples of permanent attachment would be: bond, weld, rivet, or threaded fastener with thre
16、ad upset after assembly. No loose pieces shall be used between the flame arrester and the carburetor or throttle body that could be left out. 4.1.2.1 The adaptor assembly shall provide for direct attachment to the carburetor or throttle body. 4.1.3 The construction of the flame arrester shall provid
17、e access for inspection and cleaning. 4.1.4 There shall be no openings in the arrester or its connection to the carburetor or throttle body through which a backfire flame can pass. SAE J1928 Revised JAN2012 Page 3 of 9 4.1.5 The construction for the flame arrester shall provide means of securely fas
18、tening both the flame arrester to the carburetor or throttle body air intake and the component parts to each other. When clamps are used, they shall be affixed to one of the major component parts in such a manner that they cannot be easily removed. No springs shall be used for the purpose of clampin
19、g. 4.1.6 Construction of the flame arrester shall be such that component parts cannot be misaligned during assembly or installation to an extent that will impair its effectiveness. 4.1.7 If non-metallic materials are utilized for components critical to the flame arrester or the induction systems fun
20、ction, it is recommended that they have a Limiting Oxygen Index (LOI) of 26% or greater and/or have a UL 94 HB rating. 4.1.7.1 Flame arresters or induction systems containing non-metallic materials must undergo the accelerated aging procedure in 5.4.2. 4.2 Engine Air and Fuel Induction System 4.2.1
21、The engine air and fuel induction system shall be designed and constructed to provide protection equivalent to that of an effective backfire flame arrester designed and constructed in accordance with this document. 5. METHOD OF TEST 5.1 Each design of the flame arrester shall be tested to determine
22、conformance to this document. 5.1.1 Where a particular design consists of various combinations of parts, only a sufficient number of sample assemblies need to be tested that will be representative of the flame arresting performance of the cross section of assemblies of the design. 5.1.2 The test of
23、the samples representative of each design shall conclusively indicate that, when such backfire flame arresters are subjected to the test procedures of 5.4, the design prevents propagation of the backfire flame to the surrounding atmosphere without failure, damage, or permanent deformation. 5.1.3 A c
24、hange in the design or construction or application (i.e. change from carburetor to throttle body) of an arrester that has passed qualification tests requires that the arrester be retested if the change cannot be considered and accepted under 5.1.1. 5.2 Each design of an engine incorporating a backfi
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