1、 ENGINEERING STANDARDS General Specification SUPERCEDED EDS-T-7530 Test Method of Plastic Tank This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW3086. F(3D% 8:8 7$*B%A 7 $4F 4G - Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program .Bd# G
2、MW3086 8p) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 11 Version : 4 1 Introduction Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict be
3、tween the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This standard is to define the general requirements for plastic fuel tank. 1.2 Scope. This standard is applied only to gasoline all the models of sedan and van. 2 References Note: Only the latest approved
4、standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ECE R34 2.2 GM Standards/Specifications. EDS-T-7511 GMW3059 2.3 Additional References. None 3 Test Preparation and Evaluation 3.1 Resources. 3.1.1 Calibration. The test facilities and equipment shall be in go
5、od working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.1.3 Test Piece. 3.1.3.1
6、 A finished product or a part of it must be chosen as a test piece. Unless otherwise specified, the number of test pieces is three or more for approval test and one or more for quality review and import inspection. 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I8x $4=F 3L 6$ . :0 : F67t 7568 18 88x 7 , F6* 72T8p
7、) F$ . 1.1 +95 . ., 4G E:48t F(3D% 8:8 7$*B%A 7 $4F 8-L958 7 98x 9IF$ . 1.2 957 -88 . ., E:48t d2*8x 17F# 37= -C 3F= 98 =97 FF7 957F$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . ECE R34 2.2 GM E:4 / . EDS-T-7511 GMW3059 2.3 dA E:4 / . None 3 4G :4/x -C D4 3.1 4G 88 .
8、3.1.1 9I . 4G 2X/x7t 8/x# 9P 2e#8x -PHLF 8TGF 9I Fx:8x J66 F$ . 3.1.2 $4= 3L$ . $4= 4G 42X0 8/x4 17%T 3L 8$ . ,) ! ., E:47 +d%P +& ?U9I -3L&8t , ,p*95 9I87 8 9IGF 9I%L66 F$ . 3.1.3 4G D . 3.1.3.1 7x9PE D# F .8x 4G D8p) 17F%L , $+8! 2l. 4G 97 C-H 9I%L6 8: 6# F , 384G 8t 3P , E:B -C 3L81# 1P 818p) F$
9、. GM KOREA ENGINEERING STANDARDS EDS-T-7530 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 2 of 11 Version : 4 3.1.3.2 The test piece supplier must gain the prior (initial) approval of the Technical Center under test as to whether the piece matches up to the specificati
10、ons that are required. 3.1.3.3 If a test piece is approved, its structure and manufacturing process cannot be changed without the permission or consent of the Technical Center. If changed, it must be re-approved by the Center. 3.2 Conditions. 3.2.1 Pre-Conditioning. Unless otherwise specified, the t
11、est pieces must be placed under pre-conditioning at a temperature of (232) E and a relative humidity of (505)% for 48 hours or more. 3.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test
12、certificates, reports, etc. 3.3 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 healt
13、h practices and determine the applicability of regulatory limitations prior to use. 3.4 Documentation. Samples of components or material released to this standard shall be tested for conformity with the requirements of this standard and approved by the responsible GM Department prior to the start of
14、 delivery of production level components or materials. Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufacture requires a new release of the product. It is the sole responsibility of the supplier to provide the customer, unsol
15、icited, with documentation of any change or modification to the product/process, and to apply for a new release. If not otherwise agreed to, the entire verification test shall be repeated and documented by the supplier prior to start of delivery of the modified or changed product. In some cases, a s
16、horter test can be agreed to between the responsible GM department and the supplier. 4 Requirements and Procedure 4.1 Impact Resistance Test. 4.1.1 Test Method. 4.1.1.1 Fill solution of a mixture of 60% ethylene glycol and 40% water into the fuel tank up to the nominal volume and leave the tank belo
17、w (-40) E for 24 hours. Then, perform an impact test on the tank using a pendulum impact tester. 3.1.3.2 9PE8x )=Fd 98 )=8# d3T 7$ 2).Bd ., 8 7 ?* +9F# :8 7 .7 $4F7 4G 8x 38 -O6x6 F$ . 3.1.3.3 %P .E8! 8*8 4G D8t ., E:47 9I%P 4G 8x 7 98x +94P6 F+ , 61 )= 987 GM :04 .2P8 388x -O6x6 F$ . .E8! 8*7 862P
18、&H88 , d# , 22e , 9P9 )9I ,* /D# 21:7t 4)%P 6&F -8($ -P2%T 7 49PE 4* 7F$ . )=8# +88 7= 7 .7t 14 68 9PE /21 )9I 18 - Gm8t P97 4F 2P* 9P)F6 F+ 4 9PE 4 4=8x F6 F$ . $* F84 6# F , )=8# P9 Gm8t -%P 9PE8 )= 987 98= : 4G 8x -L.) 3LFF 0* ,l2PGF6 F$ . 8. 77 86 GM :04 .2P7t )=888 F87 8F $%P : 4G 8x 44F 3L 8$
19、. 4 7 9 -C 4G 9 4G . 4.1.1 4G - . 4.1.1.1 7D,)4*0 ,p8 GpF76 (7D,)4* : ,p = 60 : 40, vol %)8x )?7(: =x7 7$*B%A * (-40) E8 7$ F72P 24 48 % 6| -?F G , D&)0 4G d* 87F7 7$*B%A 7 8x 4F$ . GM KOREA ENGINEERING STANDARDS EDS-T-7530 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page
20、 3 of 11 Version : 4 4.1.1.2 The pendulum impact tester must be fabricated according to the specifications below (See Figure 1). y Impact Hammer (in a pyramid shape) mass: 15 kg. y Pendulum Length: 1 m. y Impact Energy: 3.1 Kgfm. 4.1.1.3 The impact point must be specified in the drawings. 4.1.2 Requ
21、irement. No crack must be found so that the solution can leak out. 4.2 Fuel Permeability Test. 4.2.1 Test Method. 4.2.1.1 Fill unleaded (smokeless) gasoline into the tank up to half the nominal volume and then keep the tank at a temperature 40 E for 4 weeks with all the holes and passages unblocked.
22、 4.2.1.2 After 4 weeks, if the volatile rate is judged to be constant, empty the tank and re-fill unleaded gasoline up to half the nominal volume and then keep the tank with all the holes passages blocked up. 4.2.1.3 Calculate the mass of the current tank containing gasoline and keep it at a tempera
23、ture of 40 E for 8 weeks. Then, measure a mass reduction. 4.2.2 Requirement. The amount of fuel transmission should be lower 20g/day. 4.3 Fuel Resistance Test. 4.3.1 Test Method. 4.3.1.1 Pick up a before-test tank to take 5 pieces from a part maintaining a regular thickness for a test of tensile str
24、ength and elongation. 4.3.1.2 Perform the same activities on the tank taken following the above step “4.2”, Be sure to take 5 pieces from the same part as that of the before-test tank. (In this case, follow EDS-T-7511 for the test method and test piece specifications. The test speed must be set to 5
25、0 mm/min.). 4.3.1.3 Match the before-test tank against the tested tank in tensile strength and elongation. Calculate each average except maximum and minimum values. Find the change degree. 4.3.2 Requirement. The amount of shift of the tensile strength and elongation should be between (-10)% and +10%
26、. 4.4 Fire Resistance Test. 4.4.1 Test Method. Fill unleaded gasoline into the tank up to half the nominal volume and block up all the holes and passages. Mount it on to a jig or buck. Then perform the test described in four steps under the same conditions as applied to a finished car. 4.1.1.2 D&)0
27、4G d# 6x( 7 &d( 9P8%L66 F$ (,* 1=l9 ). y F+l (Fp(-,& GIB ) :( : 15 kg. y D&)08 l8 : 1 m. y 7“8 4F:# .88# $+7 -$) +4F$ . 4.1.2 7 . 7$*B%A 8 7() 8F GpF768 #83LG818 666 F$ . 4.2 7$* C0$ 4G . 4.2.1 4G - . 4.2.1.1 7$* B%A 7 ,h7$42*8x )?7(8 50%: =x7 7$*B%A 8 B)* *: 68t =x) 40 E8 7$ F72P 4:0 % 6| -?F$ . 4.
28、2.1.2 4 :0 -? G 7$*8 HL-P(8 89IF$ DD$%L+ , 7$*B%A 6|8x /x7 , $4 ,h7$42*8x )?7(8 50%: =x7 G , 7$*B%A 8 +& Hole -C B)* -4EF$ . 4.2.1.3 -4EF 7$*B%A 8 :(8x ?U9IF 8 :0 % 6| 40 E8 7$ F7 -?F G , :(8 D2* ?U9IF$ . 4.2.2 7 . 7$* C0(8 20 g/day 8F8 . 4.3 !7$*2e 4G . 4.3.1 4G - . 4.3.1.1 $4F0 2F8x 9P7F DF8p) -G(
29、8x /xF$ . 4.3.2 7 . 88I$ -C 48F8 -G(8 10% 8!8 . 4.4 !G2e 4G . 4.4.1 4G - . 7$*B%A 7 ,h7$42* 7$* )?7(8 50%: =x7 G -ddB)* 9P7F 7$*B%A 8 +& B)* -4E4A G , 4=7 8=%L# 1B7t % 8F 98p) Jig D# Buck7 8=F7 $88 4$8 4G 8x 3LFF$ . Note: The test must be conducted under the GM KOREA ENGINEERING STANDARDS EDS-T-7530
30、 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 4 of 11 Version : 4 condition that there is no wind. 4.4.1.1 Step 1. Fill gasoline to ignite into a pan. The amount of the gasoline must be as much to be burnt up for 5 minutes or more. Keep it 3 meters away from the tank
31、filled with unleaded gasoline up to half the nominal volume and set fire on the gasoline. Then, wait for 60 seconds. See Figure 2. Note: The pan must be longer than the tank by not less more than 20 cm and less than 50 cm. 4.4.1.2 Step 2. Assume that the fuel tank is mounted on a finished car that i
32、s currently unloaded. Place the pan at a level under the tank as much clearance as is maintained between the tank and the ground. Let the tank catch fire for 60 seconds (See Figure 3). 4.4.1.3 Step 3. Place a shielding screen on the pan top at a level of (31) cm higher than the fuel surface. Let the
33、 tank catch fire again for 60 seconds (See Figure 4). The shielding screen is made of fire resistance material. See Figure 6. 4.4.1.4 Step 4. Move the pan 3 m away from the tank with the screen on and put out the fire (See Figure 5). 4.4.2 Requirement. No crack must be found so that the solution can
34、 leak out. 4.5 Drop Test. 4.5.1 Test Method. Fill solution of a mixture of 60% ethylene glycol and 40% water into the fuel tank up to 75 % of the nominal volume and leave the tank below (-40) E for 24 hours with all the holes and passages blocked up. Immediately, free-drop it from a height of 6 mete
35、rs down to the concrete floor. 4.5.2 Requirement. The tank must not be cracked or broken into pieces so that the solution can leak out. 4.6 Inside Cleanness Test. 4.6.1 Test Method. 4.6.1.1 Block up all the fuel tank holes except the filter setting hole and fill the tank with 500 ml of unleaded gaso
36、line. 4.6.1.2 Shake the tank twice up and down and twice right and left and use a piece of net having the same mesh as the fuel filter in order to strain the gasoline. 4.6.1.3 Take foreign substance strained out in the net and dry it up until the gasoline is fully removed. Then, measure its weight.
37、4.6.2 Requirement. The foreign substance must not exceed 0.02 g. :0 : 4G 8t -H(8 6# 9F72P 3LFF$ . 4.4.1.1 1$ . . w8x 88pA 7$* (,h7$42* 17 )* !8F 7d7 “W#$ . 8& , 7$*8 68t .8x .8 G 5. 81 % 6| A 3L 88x 9I$4 %L66 F$ . 7$* “W8t 7d* )?7(8 50%: ,h7$42*8x =x7 7$*B%A ).Bd 3 m &6: 88?7 “ .8x .8 G , 60.H H& G
38、, 7$* DF87 FxBd7t M8t +3 (Mesh)* 4:# ,p+8x 17F7 7$*B%A !.8 ,h7$42*8x ) !$ . 4.6.1.3 ,p+7 ) : 7$*B%A !.8 8,p:7 $4F7 F8T%L6 8# ,h7$42* 2e.8x .H 94P 9PF G , 8,p:8 ,h* ?U9IF$ . 4.6.2 7 . 7$*B%A ! 8,p:8 Q(8t 0.02 g8x 2F 37 /min 8 8T28p) :08F7 , 7$*B%A 6|8 6)Y8 300 KPa7 8* &: ,p8x :08F$ . 4.10.1.3 300 KPa
39、 8 6)Y F72P 15 =%L# 8i= .887 $4F 4G . 4.12.1.1 4G 8/x# 22,000 N 7(8 +#4G d (UTM)8x 17F$ . 4.12.1.2 4G D8t 7x9PE72P 8i= .8x 4G 8 4#F 9I$) .H 8(2P ?F$ . 4.12.1.3 4G D8x 4G :, (Jig)7 9I4A G , 8i=%P +7 3L:F -F8p) 50 mm/.8 2$) 8i= .8x 86x $-h$ . 4.12.1.4 8i= .8 .*%L# 3P88 88I$* ?U9IF$ . 4.12.1.5 7 . 88I$
40、# 350 N 818 . 4.12.2 7$*B%A 7.8 8i= .887 $4F 4G . 4.12.2.1 4G 8/x# Push-Pull Gage* 17F$ . 4.12.2.2 8i=%P .8x Push-Pull Gage7 8=F G , 8i=%P +7 3L:F -F8p) 86x $-h$ . 4.12.2.3 8i= .8 .*%L# 3P88 I$* ?U9IF$ . 4.12.2.4 7 . 88I$# 350 N 818 . 4.13 :%4G . 4.13.1 4G - . 4.13.1.1 4G 8x 44F 7$*B%A 7 $4F7 ?3L7t
41、d#+72P $+0 8?F#: G8 F$ . 4.13.1.2 7$*B%A 8 7$* :08 7t -ddB)* -4E4A , 4.9 9Q 12000 G8 Cycle 8x 3LFF G , 4.99 4G 8/x GM KOREA ENGINEERING STANDARDS EDS-T-7530 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 10 of 11 Version : 4 Figure 2: Fire Resistance Test, Step 1 / ,* 2
42、: !G2e 4G 1$ Figure 3: Fire Resistance Test, Step 2 / ,* 3: !G2e 4G 2$ Figure 4: Fire Resistance Test, Step 3 / ,* 4: !G2e 4G 3$ GM KOREA ENGINEERING STANDARDS EDS-T-7530 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 11 of 11 Version : 4 Figure 5: Fire Resistance Test, Step 4 / ,* 5: !G2e 4G 4$ Figure 6: Shielding Screen Specifications / ,* 6: =$*8
