1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7926 Test Method for Shear Stability of Petroleum Products Do Not Use on New Program; No Replacement. 8XG8T8 7( -C 98$7 $4F 6|9I2e D4- Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Company All
2、Rights Reserved September 2011 Originating Department: GM Korea Engineering Standards Page 1 of 5 Version : 3 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 prec
3、edence. 1.1 Purpose. This standard applies to evaluation of stability of various lubricants against heat and shear. 1.2 Applicability. Evaluation of stability of lubricants by applying heat, shear and load on various lubricants used for vehicles, and then measuring changes in viscosity at 100 E and
4、TAN (Total Acid Number) the lubricants 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. DIN 51562 2.2 GM Standards/Specifications. EDS-T-7401 EDS-T-7790 2.3 Additional References. None 3 Resources 3.1 Equipment an
5、d Reagent. 3.1.1 N-Hexane. 3.1.2 4-Ball Tester (Plints TE92 Model). 3.1.3 Test Housing Assembly (Refer to Figure 1). 3.1.4 Tapered Roller Bearing (FAG 3200 BXA). 3.1.5 Cooling Air or Cooling Water Circulation Devices (Pump, Hose and Bath). 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I8x $4=F 3L 6$ . :0 : F67t
6、7568 18 88x 7 , F6* 72T8p) F$ . 1.1 +95 . ., E:48t 59 8XG8T8 7( -C 98$7 $4F 6|9I2e8x D4F#$ 957%P$ . 1.2 957 -88 . ., 8t 8% =7 957%L# 59 8XG8T7 7( , 98$ -C F:E8x 4F G 8XG8T8 100 E72P8 9D$ -G -C 9814 -G* ?U9IF7 8XG8T8 6|9I2e8x D4F# $ 957F$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2
7、1 17 E:4 / . DIN 51562 2.2 GM E:4 / . EDS-T-7401 EDS-T-7790 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x -C 46 . 3.1.1 N-Hexane. 3.1.2 4-Ball Tester (Plint1 9P9 TE92 Model) 3.1.3 Test Housing Assembly (,* 1 =l9 ) 3.1.4 Tapered Roller Bearing (FAG 3200 BXA). 3.1.5 !57 Air Gm8t !53L 3PG Unit (Pump, Hose -C
8、 Bath). GM KOREA ENGINEERING STANDARDS EDS-T-7926 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 2 of 5 Version : 3 4 Procedures 4.1 Conditions. 4.1.1 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shal
9、l be specified on component drawings, test certificates, reports, etc. 4.2 Instructions. 4.2.1 Measure the viscosity of the lubricant sample at 100 E in accordance with EDS-T-7401. 4.2.2 Measure TAN (Total Acid Number) of the lubricant to test in accordance with EDS-T-7790. 4.2.3 Rinse the test hous
10、ing and the bearing with N-Hexane, dry them at 80 E for one hour, and then cool them in the desiccator to the room temperature. 4.2.4 Fill the test housing with approximately 40 ml of the lubricant, mount the bearing on the housing, and then close the lid. 4.2.5 Mount the test housing assembly on th
11、e 4-ball tester, and connect the thermocouples mounted on the housing with the thermocouples of the 4-ball tester. 4.2.6 Insert the drying air hose in the cooling water circulation inlet on the test housing. 4.2.7 If the drying air is not employed, use the cooling water device to cool the test housi
12、ng. 4.2.8 Execute Print, the 4-ball tester operating program. 4.2.9 Select DIN 51562 Shear Mode on the menu. 4.2.10 Select a file to record the test result data, and choose one of the test modes described in item 4.2.11 below. 4.2.11 The test can be performed by employing one of the four conditions:
13、 4.2.11.1 5.0 KN x 605 E 4 hours - Condition A. 4.2.11.2 5.0 KN x 605 E 8 hours - Condition B. 4.2.11.3 7.5 KN x 605 E 16 hours - Condition C. 4.2.11.4 10.0 KN x 655 E 24 hours - Condition D. 4.2.12 Check if the high-load actuator is mounted on the 4-ball tester, and the load switch is turned to the
14、 High position. 4.2.13 Start the equipment, and wait until the load reaches the target load on the monitor. 4.2.14 When the load on the equipment reaches the target load, press F3 key to rotate the shaft. 4.2.15 When the temperature reaches 58 E , open the drying air valve to cool the test housing,
15、and when the temperature reaches the test temperature at 60 E , adjust the flow of the air. 4 4G 9 9 A. 4.2.11.2 5.0 KN x 605 E 8 hours - 9 B. 4.2.11.3 7.5 KN x 605 E 16 hours - 9 C. 4.2.11.4 10.0 KN x 655 E 24 hours - 9 D. 4.2.12 4-Ball Tester 7 High Load Actuator 4 8=%L6 8 , Load Switch4 High8 88?
16、7 8# : G8F$ . 4.2.13 dd* 8% 4P , Monitor72P F:E8 +E F:E7 $* & : $4dF$ . 4.2.14 dd8 F:E8 +E F:E7 $* 8 Monitor 72P G8%L+ , F3 Key * #) Shaft * G984Ad 48F$ . 4.2.15 7$4 58 E7 8*+ 9)d* 7(6 Test Housing 8 !5%L$) F7 , 4G 7$8 60 E7 8*$) )d8 68x 99+ Test Housing 8x dd).Bd .*F7 , 8XG8T* 3LF$ . 4.2.17 4G :F G
17、 8XG8T8 1B* 8U6|8p) 4=dF7 .(F G EDS-T-7401 7 8F7 100 E72P 9D$* ?U9IF$ . 4.2.18 $8 47 8F7 9D$ -G* F G .(F$ . Vc = V 5 F V 4V4 100(%) 7 d2P , Vc: 9D$-G (%). V1: 4G G 9D$ (cSt). V0: 4G 98 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 SEP 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 )
