1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7723 The Measurement Methods of Sulphuric Ash Do Not Use on New Program; No Replacement. 2Q8T9PE8 G G. ?U9I- Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Company All Rights Reserved August 201
2、1 Originating Department: GM Korea Engineering Standards Page 1 of 5 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This sta
3、ndard specifies the test method for determination of sulphated ash in mineral oil, synthetic oil and other similar petroleum products. 1.2 Applicability. This standard applies to determining approximate content of organo-metallic additives by applying sulphuric acid to residues obtained from carboni
4、zation of the petroleum products containing or without lubricating additives. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. DIN 51575 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Reso
5、urces 3.1 Equipment and Reagent. 3.1.1 Muffle Furnace. A muffle furnace which is capable of adjusting temperature within 200 to 800 E and maintaining the temperature of (77525) E shall be used. Here, it is desirable that has funnels at front and back side so that air can circulate naturally. 3.1.2 I
6、gnition Crucible. Silica or platinum evaporating dishes with a diameter of 50mm and a capacity of 50 ) 100 ml, and are made of porcelain or sintered aluminum oxide (for mineral oils containing phosphorus compounds) shall be used. 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I8x $4=F 3L 6$ . :0 : F67t 7568 18 88
7、x 7 , F6* 72T8p) F$ . 1.1 +95 . ., E:48t E8T , F2e8T -C 87t 8T1F 2Q8T9PE8 G G.8x 9I(F# 4G -7 $4F7 9IF 8$ . 1.2 957 -88 . 8XG7 =49P* F8TF! Gm8t F8TF: 68t 2Q8T 9PE8x AG 4AG 88T,p7 G18x .4F7 07 38%P E:48x 957F$ . 2.1 17 E:4 / . DIN 51575 2.2 GM E:4 / . None 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x -C 46
8、. 3.1.1 98d) . 88 7$* 200 800 E8 -8872P 7$99) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 AUG 2011 Apply new Engineering Standard Template. Limited use with no replacement (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 ($4=E:4 68 ) =* (G)8*4G D4 )
