1、 ENGINEERING STANDARDS General Specification SUPERCEDED EDS-T-5229 High-Pressure Pump for Headlamp-Cleaning System This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW16619. Copyright 2011 General Motors Company All Rights Reserved Dece
2、mber 2011 Originating Department: GM Korea Engineering Standards Page 1 of 10 Version : 3 1 Introduction 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 P
3、urpose and Scope. This test specification defines the general test conditions for high - pressure pumps for headlamp cleaning systems. Called shortly “pump“ in the following. Which test specifications are to be applied, as well as material specifications, form, dimensions and surface treatment are t
4、o be noted from the drawing. In addition to this specification, the pump must satisfy the requirement of the countries in the assembly with a high - pressure headlamp cleaning system, in which it is applied. 2 References Note: Only the latest approved standards are applicable unless otherwise specif
5、ied. 2.1 External Standards/Specifications. DIN 30640 DIN 40050 DIN 50049 JIS D5704 MVSS F30 SMS 2983E 2.2 GM Standards/Specifications. EDS-T-7005 EDS-T-7143 EDS-T-7405 GMW3059 2.3 Additional References. None 3 Test Preparation and Evaluation 3.1 Resources. 3.1.1 Calibration. The test facilities and
6、 equipment shall be in good 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.
7、3.1.3 Equipment. For the performance of the tests described in this test specification the testing instruments and test means listed in the following are necessary. Unlisted parts are to be serviceably selected. 3.1.3.1 Test arrangement for the performance of the test in condense - water constant cl
8、imate corresponding to EDS-T-7005. 3.1.3.2 Test arrangements for the determining of the chemical constancy corresponding to clause 4.2.1.2 of this test specification. 3.1.3.3 Test arrangement for the determining of the resistance to ozone of elastomers corresponding to EDS-T-7405-1 clause 4. 3.1.3.4
9、 Temperature Cabinet. Temperature cabinet for return - air operation with exhaust, explosion - proof. GM KOREA ENGINEERING STANDARDS EDS-T-5229 Copyright 2011 General Motors Company All Rights Reserved December 2011 Page 2 of 10 Version : 3 Work space: Suitable size. Performances: 2 performances = 1
10、00 mm. Range of temperature: (-40) E . +100 E . continuously adjustable (Program control is recommended) Temperature constancy: 2K spatially and temporally Rate of acceleration of temperature for the empty tempering chamber: 1 K/min (recommended value). 3.1.3.5 Voltage Stabilizer. Range of voltage:
11、0 . 15 V continuously adjustable Range of current: 0 . 100 A, current limiting continuously adjustable 3.1.3.6 Voltage Measuring Instrument. Voltage measuring instrument for example moving - coil instrument of the grade 0.5 with corresponding compensating resistance. 3.1.3.7 Current Measuring Instru
12、ment. Current measuring instrument for example moving - coil instrument of the grade 0.5 with corresponding shunt. 3.1.3.8 Time Switch with Counting Device. The time switch with counting device is an instrument with which the pump is operated after readjusted operating and spacing time over the tota
13、l number of cycles. The time switch with counting device should be able to switch automatically off after reaching a presupposed number of cycles. Input and output voltage: 0 15 V Rise time of output voltage: 0.1 second Decay time of output voltage: 0.1 second Interval times: Variable Continuously f
14、rom 1 s to 30 seconds Pause interval variable: Continuously from 1 s to 30 seconds Accuracy of reading: 0.5 second Counting device: Frequency 0.1 Hz Counting volume 2,000 impulses 3.1.3.9 Over - Pressure Measuring Instrument. Over - pressure measuring instrument for example sensitive pressure gauge,
15、 grade 0.6, with an indicating range of 0 ) 400 KPa and a scale division of 2 KPa. Electro-dynamically working data - receiver and electric indicating instruments are like - wise instertable, so far available. 3.1.3.10 Gauge Glasses. Content 10-6m3 Scale Division 10-6m3 Number 100 1 4 1,000 10 2 2,0
16、00 20 1 3.1.3.11 Cable. 3.1.3.11.1 Cable of suitable length, composed of twin, snaked, electric leads with a cross section of 1.5 mm2 for the electrical connection of the time switch with the pumps. The combining elements at the ends of the electric leads (for example, cable eyes, banana plug) must
17、be soldered with the electric leads. 3.1.3.11.2 Cable of suitable length, composed of an electric lead with a cross section of 16 mm2 for the electrical connection of the time switch with the voltage stabilizer. The combining elements at the ends of the electric lead (for example, cable eyes) must b
18、e soldered with the electric lead. This cable is necessary only at the endurance test of the pumps according to clause 4.2.8. 3.1.3.12 Oscillating Table with Oscillator. GM KOREA ENGINEERING STANDARDS EDS-T-5229 Copyright 2011 General Motors Company All Rights Reserved December 2011 Page 3 of 10 Ver
19、sion : 3 The oscillating table with oscillator, called shortly oscillating table in the following, is a device with which oscillations are executed respectively in a vertical direction and 2 horizontal directions standing vertically one after another, temporally independent of each other. The oscill
20、ator must be so designed that the oscillating table executes oscillations corresponding to the following data. Frequency: 10 Hz . 50 Hz sine, continuously adjustable Accuracy of reading 0.5 Hz Frequency drift: (6030) sec/octave Oscillating amplitude: 0.2 mm . 0.7 mm adjustable Accuracy of reading: 0
21、.02 mm 3.1.3.13 Testing Medium. Water (tap water) or a mixture of 50 vol. % water and 50 Vol % isopropanol is used as testing medium, as described in the individual testing points. The quantity of the testing medium is to be so selected that the pump is constantly filled with fluid during the test.
22、3.1.3.14 Testing Nozzle. For the function test corresponding to clauses 4.2.5.3 and 4.2.5.4 of this test specification, a testing nozzle is to be used. The nozzle should make possible reproduce able measurements of the pump parameters. The geometric dimension sizes of the testing nozzle are evident
23、from Appendix 1. For the endurance test production nozzles can be used. 3.1.3.15 Regulating Valve. The regulating valve forms a unit with the nozzle. The opening pressure of the regulating valve should be (12515) KPa, the closing pressure 60 KPa. For the test, released production parts are to be use
24、d. 3.1.3.16 Timing Relay. The timing relay limits the duration of connection of the pump to (0.530.03) seconds per manipulation. For the test, released production parts are to be used. 3.1.3.17 Hose Garniture. The hose garniture is composed of braided hoses which serve for the connection of the sing
25、le components of the headlamp cleaning system filled with testing medium. For the test, released production hoses are to be used. The connections of the single components are to be designed as short as possible. Where this is possible there also inflexible tube connections with equal cross section o
26、f passage are permitted. 3.1.4 Test Piece. For the sampling and release testing according to this test specification, minimum 5 consecutively numerated pumps are to be delivered in the connection with a works test certificate to DIN 50049, Pt. 2.3. It is expected that the values of all required char
27、acteristic sizes represent the range of tolerance of the production scattering width at the proposed test samples. If this presupposition is not satisfied by the test samples, the range of tolerance of production scattering width for all required characteristic sizes must be given in the works test
28、certificate. Let alone the individual measured values. 3.2 Conditions. 3.2.1 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 3.3 Safety. This standard may invo
29、lve 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 the applicability of regulatory limi
30、tations 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 delivery of production level components or materials. Any cha
31、nge 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, unsolicited, with documentation of any change or modification to th
32、e 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 shorter test can be agreed to between the responsible GM depart
33、ment and the supplier. GM KOREA ENGINEERING STANDARDS EDS-T-5229 Copyright 2011 General Motors Company All Rights Reserved December 2011 Page 4 of 10 Version : 3 4 Requirements and Procedure 4.1 General Requirements and Concepts. The tastings are, if nothing different is specified, to be performed a
34、t +23 E 5K. The number and sequence of tastings per pump are specified at the end of this test specification. The defined characteristic values and requirements must be satisfied by any pump. 4.1.1 Pump, Suction Behavior, Current Consumption. The pump must suck in and convey the washing solution per
35、fectly after filling the tank. Pumps, which are arranged spatially separate from the tank, must besides be naturally - aspiratedly designed and convey perfectly the wash solution from a suction height of min. 50 mm. These pumps must be operable in every arbitrary fitting position. The current consum
36、ption of the pump (IP) should not exceed 17 A after a switching time of 1 ) 4 seconds. 4.1.2 Concepts. 4.1.2.1 Pressure P. The pressure P is the maximal static overpressure measured at the nozzles of the high - pressure headlamp cleaning system (s. fundamental representation of the test setup for th
37、e measurement of pressure in the Appendix 2 of this specification). 4.1.2.2 Volume V. The volume V is the quantity of testing medium conveyed by the pump after a manipulation through the nozzles of the high - pressure headlamp cleaning system. 4.1.2.3 Test Voltage Up. The voltage value at which the
38、test of pump is performed. The amount of voltage is given in the individual testing points. The voltage up is directly measured with the pump. 4.1.2.4 Current IP. The current flowing during the operation of pump at employed test voltage up. 4.2 Performance Requirements. 4.2.1 Visual and Dimensional
39、Test. 4.2.1.1 General. The dimension sizes defined in this test spec., in the releases and in the constructional drawing of pump and their tolerances must be satisfied by the pump. Formal defects, damages or scarcities, such as pores, bubbles, cracks, material overlaps, binding defects and burrs, wh
40、ich could impair the strength, the function or the appearance of the pump, are not permissible. The pump must be so designed that it is protected against impurities, such as mud, turnings which could impair the function until to the assemblage. 4.2.1.2 Characterization. The pump must be characterize
41、d by the makers mark, GM trade mark and the Part No. in lettering A2-8, A3-12, A4-16 or A5-20 to DIN 30640, Part 2. Likewise the nominal voltage UN = 12 V must be placed in lettering A3, 5-14 to DIN 30640, Part 2. The characterization must be designed elevated, well - visible and durable and may not
42、 impair the operability of the pump. 4.2.2 Material Test. 4.2.2.1 General. All materials used for the pump must correspond to the drawing specifications and material specifications as well as the specifications in the releases, especially for the pump hydrolysis - allergic materials, such as Acetal
43、Homopoly Meride (POM), may not be used. If parts of the pump are composed of a material in danger of tension crack, such as polyamide 6.6, these are to be protected against the contact with zinc ions. Parts of the pump, which are in direct contact with the wash solution, must be manufactured of mate
44、rials which correspond to the material SUS 304 with regard to their corrosion resistance. Yellow brass or bronze are not to be used in any case. These requirements are to valid for metal parts which must be ferromagnetic on the basis of their function. Such parts may not show any corrosion after a 2
45、40 hours storage in the condense water contact limit according to EDS-T-7005-D. 4.2.2.2 The pump must be resistant to the testing medium used during the function test. This is valid also for the cleaning agent and additions customary in the practical operation. By the constituents of the pump come i
46、n solution into this cleaning agent, the operability of the pump may not be disadvantageously influenced. 4.2.2.3 Resistance to Ozone of the Elastomer Parts of the Pump. Test the ozone resistance of the elastomer parts of the pump corresponding to EDS-T-7405 - 2B2U. For the conditioning, the test sp
47、ecimens are to be stored 48 hours at +23 E 5K in ozone - free atmosphere in unstressed state. The tested parts must correspond to the requirements of the step 0 at the judgment. 4.2.3 Temperature Stability of the Pump Unfilled with Test Medium. Store pump corresponding to the following arrangement i
48、n the given sequence: GM KOREA ENGINEERING STANDARDS EDS-T-5229 Copyright 2011 General Motors Company All Rights Reserved December 2011 Page 5 of 10 Version : 3 Minimum 12 hours at +23 E 5K 120 minutes at +90 E 2.5K 180 minutes at +23 E 5K 120 minutes at (-40) E 3K Minimum 3 hours at +23 E 5K After
49、then the pump may not show any crack, any deformation etc. which impair the operability. 4.2.4 Dry Operation of the Pump. Manipulate pump 6 times within 1 minute at employed test voltage over the time relay. After this test the function ability of the pump may not be impaired. 4.2.5 Function Test with Testing Medium. 4.2.5.1 Test Arrangement. For the function test of the pump a test arrangement is to be made which is composed of following components. Pump: the device to be tested. Container: for the inclusion of test medium. Ho
