1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16815 Corrosion Resistance and Performance of Parts and Feeding Systems used in Hydrated Ethanol Fuel Powered Vehicles Copyright 2012 General Motors Company All Rights Reserved August 2012 Originating Department: North American Engineering Standards
2、 Page 1 of 4 1 Scope The object of this test procedure is to cover basic requirements for performance and corrosion resistance of parts, components, assemblies and vehicles feeding systems, which have a contact with hydrated ethyl ethanol fuel. Note: Nothing in this standard supercedes applicable la
3、ws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. Not applicable. 1.2 Foreword. Not applicable. 1.3 Applicability. Not applicable. 2 References Note: Only the latest approved standards are applicable
4、 unless otherwise specified. 2.1 External Standards/Specifications. ASTM D1384 2.2 GM Standards/Specifications. GMW14914 2.3 Additional References. General Motors Cruz Alta Proving Ground, Indaiatuba, Brazil. 3 Resources 3.1 Facilities. Not applicable. 3.2 Equipment. 3.2.1 Thermometer 0 C to 100 C.
5、3.2.2 Glassware. 3.2.3 Glass tube with porous end. 3.2.4 Glass connections “T”, “L”, “U” shapes, etc. 3.2.5 Heating coil and glass reservoirs. 3.2.6 Water condenser. 3.2.7 Rubber stopper. 3.2.8 Manometers (0 to 7) kgf/cm2 3.2.9 Steam bath. 3.2.10 Silicon hoses. 3.2.11 Clamps. 3.2.12 Electrical power
6、 supply. 3.2.13 Electronic signal generator. 3.2.14 Flowmeter (0 to 200) mL/minute. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16815 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page
7、 2 of 4 3.3 Test Vehicle/Test Piece. Not applicable. 3.4 Test Time. Not applicable. 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Not applicable. 4 Procedure 4.1 Preparation. Not applicable. 4.2 Conditions. 4.2.1 Environmental Conditions. 4.2.2 Test Conditions. Deviations from
8、 the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Test Fuel Ethanol 1000. The fuel of test E1000 must have the same amount of pollutants and chemical aggressiveness foun
9、d in the field. 4.3.1.1 Fuel Composition. See GMW14914.Table 2A GMSA (GM South America, E100) 4.3.2 Corrosion Resistance of Vehicles Fuel Feeding System Parts. 4.3.2.1 Static Test to Evaluate the Corrosion Resistance of Vehicles Fuel Feeding System Parts. All parts of fuel feeding system must stand
10、plunged into the ethanol of test, for 15 days minimum, and aeration, at 70 C 3 C, according to device described in ASTM D1384, and must not exhibit corrosion products. 4.3.2.2 Dynamic Test to Evaluate the Corrosion Resistance of Vehicles Fuel Feeding System Parts. A simplified assembly with represen
11、tative parts of the fuel feeding system must run for 700 h minimum, according normal operation conditions (flow, pressure, etc.) at 70 C 3 C. The minimum period of 700 h of running test, must correspond to the 18 h (maximum) daily running period. Normally run 9 h daily. The ethanol fuel of test must
12、 be changed every 72 and 96 h, respectively, in the 168 h of week during all test. This test must simulate the low usage condition. The following graphics show a “low usage” cycle (period of 3 h), that must be repeated during the whole test period. The variations of 0, 900, and 2 500 rpm should only
13、 be used for testing fuel injectors. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16815 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 3 of 4 Figure 1: Variations for Testing Fuel I
14、njectors For testing of other components such as pump and fuel filter, consider the following chart. Figure 2: Variations for Other Components (Fuel Filter, Pump, etc.) 4.3.2.3 Recommendation. When necessary, the Product Engineer responsible for the parts of vehicle feeding system might order anothe
15、r corrosion resistance and performance tests, same as dolly engine and low usage, which must be accomplished by the Engine Laboratory at General Motors Cruz Alta Proving Ground, Indaiatuba Brazil, respectively. The tests must follow the specific procedures of each responsible area for completion. 5
16、Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Results. Not applicable. 5.3 Test Documentation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16815 Copyright 2012 General Motors Company All Rights
17、 Reserved August 2012 Page 4 of 4 5.3.1 Evaluation and Rating. The parts, components, assemblies and systems must not exhibit corrosion products or any loss of function. 5.3.2 Report. The report shall completely describe the materials tested. 6 Safety This standard may involve hazardous materials, o
18、perations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 No
19、tes 7.1 Glossary. Ethanol 1000: (E1000) Ethanol conductivity at 25 C (S/cm). 7.2 Acronyms, Abbreviations, and Symbols. ASTM ASTM International GMSA General Motors South America 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW16815 9 Releas
20、e and Revisions This standard was originated in June 2012. It was first approved by the Corrosion Global Subsystem Leadership Team in August 2012. It was first published in August 2012. Issue Publication Date Description (Organization) 1 AUG 2012 Initial publication. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
