1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16816 Corrosion Resistance and Performance of Parts and Feeding Systems used in Gasoline Fuel Powered Vehicles Copyright 2012 General Motors Company All Rights Reserved August 2012 Originating Department: North American Engineering Standards Page 1
2、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 gasoline fuel. Note: Nothing in this standard supercedes applicable laws and regulations. No
3、te: 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 unless otherwise spec
4、ified. 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). 3.2.2 Glassware. 3.2
5、.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 supply. 3.2.13 E
6、lectronic signal generator. 3.2.14 Flowmeter (0 to 200) mL/minute. 3.3 Test Vehicle/Test Piece. Not applicable. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16816 Copyright 2012 General Motors Company All Righ
7、ts Reserved August 2012 Page 2 of 4 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 the requirements
8、 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 Gasoline. The gasoline of test must have the same quantity of pollutants and chemical aggressiveness found in the field. 4.3.1
9、.1 Fuel Composition. See GMW14914, Table 2A General Motors South America (GMSA). 4.4 Corrosion Resistance of Vehicles Fuel Feeding System Parts. 4.4.1 Static Test to Evaluate the Corrosion Resistance of Vehicles Fuel Feeding System Parts. All parts of fuel feeding system must stand plunged into the
10、gasoline of test, for 15 days minimum, and aeration, at 55 C 3 C, according to device described in ASTM D1384, and must not exhibit corrosion products. 4.4.2 Dynamic Test to Evaluate the Corrosion Resistance of Vehicles Fuel Feeding System Parts. A simplified assembly with representative parts of th
11、e fuel feeding system must run for 700 h minimum, according normal operation conditions (flow, pressure, etc.,) at 55 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 gasoline fuel of test must be changed ever
12、y 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 2500 rpm, should only be used for t
13、esting fuel injectors. See Figure 1. Figure 1: Variations for Testing Fuel Injectors Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16816 Copyright 2012 General Motors Company All Rights Reserved August 2012 Pag
14、e 3 of 4 For testing of other components such as pump, and fuel filter, see Figure 2 below. Figure 2: Variations for Other Components (Fuel Filter, Pump, etc.) 4.4.3 Recommendation. When necessary, the Product Engineer responsible for the parts of vehicle feeding system might order another corrosion
15、 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 Data 5.
16、1 Calculations. Not applicable. 5.2 Interpretation of Results. 5.3 Test Documentation. 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. 5.3.2.1 The report shall completely describe the materials test
17、ed. 6 Safety This standard may involve hazardous materials, operations, 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 t
18、he applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 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
19、 GMW16816 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16816 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 4 of 4 9 Release and Revisions This standard was originated in June 2012.
20、 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-,-,-
