1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7791 Determination of Evaporation Loss of Petroleum Products This standard may be applied only for current projects. It is Superceded for all future projects and replaced by ASTM D5800/A. 2Q8T9PE8 :-PD( 4G - Note: 8 E:48t G8 =97 FF7 957%L+ , FG
2、P-P Program.Bd# ASTM D5800/A) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: GM Korea Engineering Standards Page 1 of 6 Version : 3 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of co
3、nflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This standard specifies the determination method of evaporation loss of lubricating oils (particularly motor oils) at high temperatures to prevent the engine inside from its performance deteriorat
4、ion caused by decrease of lubricating oils. 1.2 Applicability. This standard applies to the test of determining evaporation loss of additive and non-additive type lubricating oils at temperatures up to 350 E using a NOACK tester. 2 References Note: Only the latest approved standards are applicable u
5、nless otherwise specified. 2.1 External Standards/Specifications. DIN 51581 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 NOACK Tester. As shown in Figure 1 and consisting of the following components. 1 P7 :0 : ., E:48 6.0 7$F 3L;.0 DF88 :E87
6、7x.8x 2X?F$ . 4.2.10 47( 8?8 7$4 250 E4 %L+ $4#* 47( 8?7 8=F DF8* 8%(2 r 0.1) m bar8 6)Y8p) )d* H8F$ . 4.2.11 7$99 8?* 7 $# 488x 4G 488p) 9IF$ . GM KOREA ENGINEERING STANDARDS EDS-T-7791 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 5 of 6 Version : 3 4.2.14 At the end o
7、f the determination, the tube connection shall be detached from the outlet tube on the crucible. The crucible shall be carefully lifted out. Any Woods alloy adhering to the crucible shall be removed with a brush or a cloth and returned into the heating block. 4.2.15 After cooling down to the room te
8、mperature the crucible shall be weighed again with the cover removed. 4.2.16 In order to remove any coking residues, it is recommended to place the crucible and the cover together with the outlet tube in a container filled with toluene after every test and let them soak in this bath for 30 minutes a
9、t least. Here, using a wad of cotton wool soaked in toluene is desirable. 5 Data 5.1 Evaluation. The evaporation loss shall be calculated using the following equation. 100)( u mmEmmAmmEVW Where, W(V): Evaporation loss (wt%). mmE: Mass of sample before the determination. mmA: Mass of sample after the
10、 determination. 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
11、 determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to EDS-T-7791 4.2.14 4G G $4#* 4
12、7(8?72P .*F G /) 3 D# =8p) 7F%P Wood Alloy * +% 9PF % $4 47( 8?7 8=F -!F$ . 4.2.15 178p) -! G 8x 9PF ,h* ?(F$ . 4.2.16 4G G $4# )0 , -d * B*77 30 . 81 ?95 A2 8*.8x +% 9PF$ . 8& 8i &%8p) $6x:0+ $7 9$ . 5 4G $8Bd 5.1 D4 . $8 47 8F7 :-P D(8x ?U9IF$ . 100)( u mmEmmAmmEVW 7 d2P , W(V): :-P D( (wt%). mmE: ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 AUG 2011 Apply new Engineering Standard Template. Superceded (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (G)8*4G D4 )
