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 there
2、from, 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 p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J2045_201211SURFACE VEHICLE STANDARD J2045 NOV2012 Issued 1992-10 Revised 2012-11
5、 Superseding J2045 FEB1998 Performance Requirements for Fuel System Tubing Assemblies RATIONALE This revision is to encompass changes in fuel and emission technology and to clarify applicable test procedures. TABLE OF CONTENTS 1. SCOPE 2 2. REFERENCES 2 2.1 Applicable Documents 2 3. ROUTING RECOMMEN
6、DATIONS . 3 4. TECHNICAL REQUIREMENTS 3 4.1 Leak Tightness 3 4.2 Fitting Pull-Off . 4 4.3 Formed Bend Restriction. (for Production Validation (PV) only). . 5 4.4 Internal Cleanliness (for Production Validation (PV) only). . 5 4.5 Internal Fuel Resistance . 7 4.6 Life Cycle 7 4.7 Coverstock Flame/Hea
7、t Resistance See SAE J2027 . 7 4.8 Burst 8 4.9 Electrostatic Charge Mitigation Requirements 9 4.10 Assembly Hydrocarbon Loss (Mini-S.H.E.D.) . 9 4.11 Chemical Resistance 10 5. VALIDATION TESTING RECOMMENDATIONS . 11 6. NOTES 12 6.1 Marginal Indicia . 12 SAE J2045 Revised NOV2012 Page 2 of 16 APPENDI
8、X A 13 FIGURE 1 EXAMPLE . 6 FIGURE A1 TYPICAL 15 MICRON X 3MM FLOW RATES VS. PRESSURE THROUGH A CALIBRATED LEAK CHANNEL . 15 FIGURE A2 TYPICAL 20 MICRON X 3MM FLOW RATES VS. PRESSURE THROUGH A CALIBRATED LEAK CHANNEL . 16 TABLE 1 FLUID OR MEDIUM 10 TABLE 2 SAE J2045 TABLE SUMMARY 11 TABLE A1 FUEL SY
9、STEM COMPONENT LEAK TEST SPECIFICATION . 13 1. SCOPE This SAE Standard encompasses the recommended minimum requirements for non-metallic tubing and/or combinations of metallic tubing to non-metallic tubing assemblies manufactured as liquid- and/or vapor-carrying systems designed for use in gasoline,
10、 alcohol blends with gasoline, or diesel fuel systems. This SAE Standard is intended to cover tubing assemblies for any portion of a fuel system which operates above 40 C (40 F) and below 115 C (239 F), and up to a maximum working gage pressure of 690 kPa (100 psig). The peak intermittent temperatur
11、e is 115 C (239 F). For long-term continuous usage, the temperature shall not exceed 90 C (194 F). It should be noted that temperature extremes can affect assemblies in various manners and every effort must be made to determine the operating temperature to which a specific fuel line assembly will be
12、 exposed, and design accordingly. The applicable SAE standards should be referenced when designing liquid-carrying and/or vapor-carrying systems which are described in this document. Wherever possible or unless stated otherwise, systems tested to this document shall be in the final design intent con
13、figuration. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Driv
14、e, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J30 Fuel and Oil Hoses, Sections 10 and 11 SAE J517 Hydraulic Hose SAE J526 Welded Low Carbon Steel Tubing SAE J1645 Fuel System Electrostatic Charge SAE J1681 Gasoline/Oxygenate M
15、ixtures for Materials Testing SAE J1737 Procedure/Fuel Permeation Losses SAE J2027 Protective Covers for Non-metallic Gasoline Fuel Injection Tubing SAE J2044 Quick Connect Coupling Specification for Liquid and Vapor/Emissions Systems SAE J2260 Non-Metallic Fuel System Tubing with 1 or More Layers S
16、AE J2587 Optimized Fuel Sender Closure SAE J2045 Revised NOV2012 Page 3 of 16 2.1.2 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.org ASTM B117 Method of Salt Spray (Fog) Testing 2.1.3 Other Pub
17、lications Code of Federal Regulations (CFR) 40 (Protection of Environment), part 86 (Control of Emissions from New and In-Use Highway Vehicles and Engines). FMVSS 301 (Fuel Systems Integrity). California Code of Regulation Title 13, Division 3 (ARB), Chapter 1, Article 1, section 1976 (Standards and
18、 Test Procedures for Motor Vehicle Fuel Evaporative Emissions). 3. ROUTING RECOMMENDATIONS Fuel tube/hose assemblies shall be routed and supported as to; a. Prevent chafing, abrasion, kinking, or other mechanical damage. b. Be protected against road hazards or provided with adequate shielding in loc
19、ations that are vulnerable to physical and/or chemical hazards. c. Be protected where temperatures may exceed the limits of 40 C to +90 C by the addition of adequate insulation and/or shielding. d. To assure maintenance of design intent routings of liquid fuel and/or fuel vapor assemblies, appropria
20、te retaining/mounting devices must be incorporated for proper assembly and subsequent vehicle service operation, maintaining interfaces for temperature and environmental control for durability. e. Route tube assemblies in an environment which minimizes heat input to the assemblies and the liquid fue
21、l and/or fuel vapor which they contain. 4. TECHNICAL REQUIREMENTS 4.1 Leak Tightness In accordance with stringent emissions regulations, including CARB PZEV, and safety regulations, fuel line assemblies must be free of leaks and micro-leaks. Production leak testing is performed to assure conformance
22、 to the requirement. Compressed air leak testing is a proven technique which provides required leak sensitivity as well as a proof test for pressure resistance. 4.1.1 Testing Device A device capable of applying the recommended internal pressure specified for both liquid fuel and fuel vapor line asse
23、mblies. Test is intended to be performed on liquid fuel/fuel vapor assemblies that duplicate the design intended for vehicle application, including applicable end fittings and/or connections (see Appendic A). 4.1.2 Sample Preparation All test samples to be at room temperature. SAE J2045 Revised NOV2
24、012 Page 4 of 16 4.1.3 Procedure a. Leak tests are to be conducted at room temperature. b. Attach tube assemblies to test fixture that simulates vehicle installation where at all possible. c. Apply internal gas pressure (see Appendix A) at one end of the assembly, allowing sufficient time for system
25、 to stabilize before determining leak rate. d. At test completion, test gas media should be exhausted through opposite end of assembly to which it was pressurized to insure obstruction and/or blockage was not present in the liquid fuel/fuel vapor line assembly, as well as blowout any potential resid
26、ue which may have been present. e. After test, remove assembly from test fixture. 4.1.4 Acceptance Criteria No leak paths greater than 15m X 3mm long for fuel lines and 20m X 3mm long for vapor lines(see graphs figure A1 and A2). If otherwise required, final acceptance criteria to be jointly determi
27、ned by producer and end user. 4.2 Fitting Pull-Off (room temperature and elevated temperature) 4.2.1 Testing Device A device suitable for applying a tensile load at a constant rate of 50 mm/min, elongating tube or hose assemblies up to 400% of their initial length, and measuring the maximum load ach
28、ieved up to a load of 900 N minimum. 4.2.2 Sample Preparation All tests are to be conducted at room temperature (room temperature fitting pull-off) and at 115 C for high-temperature fitting pull-off. 4.2.3 Procedure a. The test specimen shall consist of a direct connection coupling between the flexi
29、ble tubing/hose and fitting or tube with enough length of hose and/or tube on either side of specimen to permit adequate gripping in the test apparatus. Specimens may be cut from the production intent part or made for this test utilizing production intent product and processes, such as component ass
30、embly devices and tube forming techniques. b. Grip the test specimen in the tensile-loading device and apply a tensile load at a speed of 50 mm/min until one of the following events occur; 1. The fitting or tube separates from the flexible tubing 2. One of the test specimen components break, fractur
31、e, or rupture 3. A maximum load is reached whereby the flexible tubing reaches its maximum tensile/elongation load capability c. For elevated temperature pull-off tests, grip the test specimen in the tensile-loading device and heat test specimen to 115 C (239 F) for (15) minutes prior to applying th
32、e 50 mm/min tensile load. Test chamber should be instrumented with a thermocouple to insure test environment reaches 115 C prior to applying the tensile load. d. Measure and record the greatest load achieved before one of the events listed (2) occurs, and the type of event (failure mode). SAE J2045
33、Revised NOV2012 Page 5 of 16 4.2.4 Acceptance Criteria a. Room Temperature - 450 N minimum (fuel assemblies) or 222 N minimum (vapor assemblies) b. 115 C Temperature - 115 N minimum (fuel assemblies) or 65 N minimum (vapor assemblies) 4.3 Formed Bend Restriction. (for Production Validation (PV) only
34、). 4.3.1 Testing Device - A spherical ball half the diameter of the nominal flexible tubing material inner diameter. 4.3.2 Sample Preparation Testing is to be performed at room temperature. 4.3.3 Procedure a. Bend or preform tubing, utilizing intended production processing method, to the shape and c
35、ontour required by its design application. It is not recommended to include connectors or tubing ends for this test since geometry constraints of these components may interfere with performing this test (i.e., lack of flow through feature, restrictions, etc.) b. Pass the spherical ball through the p
36、reformed tube. 4.3.4 Acceptance Criteria The spherical ball must pass freely through the Inside Diameter of the preformed tube. 4.4 Internal Cleanliness (for Production Validation (PV) only). 4.4.1 Testing Device(s) a. Testing devices must be utilized which can safely and accurately flush the interi
37、or of the tubing assembly with solvent, effectively remove any contaminants and foreign material from the interior surface, and accurately measure that material and its weight. (See Figure 1.) b. Test solvent to be a reagent grade stoddard solvent or equivalent which is capable of effectively removi
38、ng all contaminants and foreign material from interior surface of test assembly. SAE J2045 Revised NOV2012 Page 6 of 16 FIGURE 1 - EXAMPLE 4.4.2 Sample Preparation Testing is to be performed at room temperature. 4.4.3 Procedure a. Pre-dry filter device, then cool in a desiccant cabinet. b. Pre-weigh
39、 filter device which will be used in collecting potential contaminants and foreign material in fuel line assembly. Filter must be capable of collecting a contaminant which is 240 micron in size or larger. c. Set up test specimen in test device/apparatus. d. Turn on vacuum pump (if applicable or util
40、ized). e. Pour an amount of solvent (equivalent to at least the volume of the assembly) through the tube assembly. Solvent which is dispensed into the fuel line assembly should be pre-filtered. f. Dispense solvent which has passed through the fuel line assembly into a pre-weighed filter, followed by
41、 a collection device to contain the solvent. Dry filter to dissipate solvent absorbed by filter. g. Weigh filter to determine weight gain, which is an indicator of contaminant and/or foreign material collected from tube assembly. Record value obtained in grams per tube. SAE J2045 Revised NOV2012 Pag
42、e 7 of 16 4.4.4 Acceptance Criteria Total contaminant collection should not exceed 0.15 g/m2(flexible tubing assembly) or 0.25 g/m2(flexible tubing assembly with steel tubing attached) of interior surface area. 4.5 Internal Fuel Resistance 4.5.1 Testing Device(S), Sample, Preparion, and Test Procedu
43、re As described in SAE J2260, Fuel Exposure-Preconditioning per the following. 4.5.2 Acceptance Criteria All post testing is conducted at room temperature. Assemblies must meet 4.1, 4.2, and 4.8. Additionally, complete 4.9 on fuel C (auto oxidized) perconditions samples. SAE J1645 does not recommend
44、 using alcohol fuels for conductivity testing. End user should be consulted for any potential additional requirements beyond SAE J2260 baseline fuels and soak duration. 4.6 Life Cycle 4.6.1 Testing Device Life cycle test chamber capable of performing the pressure, vibration, and temperature cycles w
45、ith test fluid as outlined in SAE J2044, Life Cycle requirement. 4.6.2 Sample Preparation Prepare samples as described in Life Cycle requirement of SAE J2044 on finished assemblies or samples which consist of production intent interfaces and components. 4.6.3 Test Procedure Per SAE J2044, Life Cycle
46、 requirement (both liquid-fuel and/or fuel-vapor applications) 4.6.4 Acceptance Criteria Test assemblies must exhibit no fluid leaks through entire test duration. At completion of test, visually inspect assemblies and components to insure no fractures, cracks, or unusual wear has occurred. Test asse
47、mblies must then meet the following tests at room temperature, 4.1, 4.2, and 4.8 of SAE J2045. 4.7 Coverstock Flame/Heat Resistance See SAE J2027 Soak Fuel Type Time of Soak Temperature CE-10 1000 Hours 60 g2120C CM-15 1000 Hours 60 g2120C Fuel C (Auto Oxidized) 1000 Hours 40 C SAE J2045 Revised NOV
48、2012 Page 8 of 16 4.8 Burst (room temperature and elevated temperature) 4.8.1 Testing Device A test apparatus capable of applying a pulse free hydrostatic pressure at a uniform rate of increase of 7000 kPa/min (1000 psig/min). For high-temperature burst testing, test apparatus must also be capable o
49、f heating test fluid to the test temperature of 115 C (239 F) and maintaining test temperature to within 3 C (5 F). Fluid bath (silicon oil or equivalent) or hot-air exposure are recommended means to employ in conducting this test. Test apparatus must also be capable of filling test specimens with hydraulic fluid to conduct room and high-temperature burst testing. 4.8.2 Sample Preparation Sample tubing, representa
