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1、 WORLDWIDE ENGINEERING STANDARDS General Specification HVAC Ps +0/-50 kPaG 4.3.6 Resonant Speed. The compressor shall be run at its first mode torsional shaft resonant speed per the requirements shown in the Table 9 below. The compressor and clutch should be broken in as follow: a. 4 h of continuous
2、 run at 2000 RPM 1830 kPa discharge pressure with 40C X40%, 118 L/s evaporator conditions. Compressor ambient temperature shall be controlled at 100C. b. 10 h of cycling 10 s on/5 off at the above load conditions, but 4000 RPM. 4.3.6.1 Test Conditions. Run 10 deg SH at inlet. Table 9: Resonant Speed
3、 Test Conditions Compressor RPM Range Disch Pres. (kPa) Suct Pres. (PSIG/kPa) Test Requirement (hr.) 600-999 2933 414 600 1000-1499 2760 380 600 1500-1999 2588 345 400 2000-2499 2415 311 300 2500-2999 2243 276 200 3000-3999 2070 242 200 4000-4499 1898 228 200 5000-5999 1725 207 100 6000-6999 1725 20
4、7 100 7000-7999 1725 207 25 8000-8999 1725 207 15 9000 however, data shall be submitted demonstrating this compressor characteristic. 4.3.7 Vibration Durability. The compressor shall withstand vibration durability running a 180 s cycle as shown below with loads applied in the radial and axial direct
5、ions for 30 h in each direction (90 hrs total). A sample of at least three random samples from production shall meet this requirement. Table 10: Vibration Durability Schedule Time, s Frequency, Hz Displacement, mm Load, G 45 25 to 50 6.0 Not Applicable 90 50 to 250 Not Applicable 30 45 50 to 25 6.0
6、Not Applicable 4.3.7.1 Vibration Test with vehicle load data. If vehicle load data is available, the compressor including all attachment parts/bracket shall be installed with original fixtures. The A/C lines to be used are 350 mm of min. long or correspond to the installation in the vehicle and shal
7、l be fastened to the static part of the test stand. The test duration shall be selected according to load level -crossing collective and field of application of the vehicle model. Europe: E0 to GME R-0-17 Worldwide: G0 to GMW3425 The load pattern is to be provided by GM and shall be mapped on the te
8、st stand of the supplier. If a load pattern is not applicable the following test parameters shall be used: 4.3.7.2 Requirements after vibration test. There shall be no loss in mounting boss torque, no fracture or cracking of compressor housing, no damage to the pulley bearing, no loss in torque of c
9、ompressor assembly bolts and no internal damage to bearings or bearing surfaces. 4.3.8 Control Valve Device Durability (not used). 4.3.9 Thermal Cycle. The compressor shall withstand a minimum of 10 thermal cycles from -40 to 135C with a minimum dwell at each temperature of four h. Charge the compre
10、ssor with a gas charge of refrigerant at room temperature prior to test. Leak rate during test shall be less than that of 3.10.1. Requirements after test shall include leak test and performance per section 3.8. 4.3.10 Migration. The compressor shall not fail when started after being subjected to the
11、 100 cycles of the test matrix shown below. Failure is defined as listed in section 4.2, any abnormal wear found on the shoes/swashplate surface during that exceeds the wear seen on teardowns after the customer usage test or having an oil quantity that is less than the supplier bogie for a given swa
12、shplate design (default will be to use 25 g if nothing is available from the supplier). This test shall be run with representative system components. Note: For dual evaporator systems, when the test calls for system operation, there shall be no airflow to the rear evaporator. Test definition: This i
13、s a laboratory test that must use all refrigerant system components at the correct orientations relative each other as installed in a vehicle on a flat surface. Pretest, the set up must stabilize all chambers to 15C prior to starting test cycles and the compressor shall be run ten minutes at 1500 cr
14、pm in order to circulate the oil throughout the system and provide a common start point. Once the system is shut down the regular test cycles can begin. One cycle is represented by Table 11. Table 11: Oil Migration Test Cycle Time, minutes Evaporator Temp, C Condenser/Compressor Temp, C Compressor S
15、tate 0 15 0 Off 90 45 25 Off 120 45 25 Off 135 15 0 Off 165 15 0 Off -,-,- GMW14789 GM WORLDWIDE ENGINEERING STANDARDS Copyright 2006 General Motors Corporation All Rights Reserved Page 14 of 17 April 2006 0 5 10 15 20 25 30 35 40 45 50 0153045607590105 120135 150165 Time (minutes) Temperature (deg
16、C Evaporator TempCompressor/ Condensor / Temp Figure 3: Migration Test Cycle Depiction Note: A test chambers needs to reach required temperatures with a rate of change such you achieve a linear rate of change from the beginning temperature to the end temperature. Run conditions for post cycle (effec
17、tively cycle 101) startup: 1) Take the chambers back up to the 120 minute point test condition 2) Take crpm to 1000 3) Engage compressor and run system for 5 minutes 4) Remove compressor for performance evaluations and teardown analysis 4.3 Service Requirements. 4.3.1 Oil amount in service compresso
18、rs. 4.3.1.1 Service compressors shall come shipped with 75 ml of the compressor oil recommended by the compressor supplier unless otherwise approved by the regional service engineer representatives. 4.3.1.2 Through normal service draining process of the compressor with no unusual special steps to ai
19、d in the removal of the oil, the supplier shall demonstrate that the compressor will not retain more than 15% of the total OEM system charge oil amount after 5 minutes. Deviations from these requirements require approval from Regional Service Engineers for each local application. Compressors that ut
20、ilize special oil retention features resulting in low system oil charge may also be adjusted upon the direction of the Regional Service Engineers. 4.3.2 Labeling Requirements. The compressor label shall not identify the supplier name in either service or OEM production in compliance with branding gu
21、idelines called out in the main SOR document. It shall be labeled with AC Delco similar to the example below. An electronic copy of the name can be provided for sizing as requested. Typically this can be accomplished by using the standard label used by the supplier and substituting AC Delco in the a
22、ppropriate FONT in place of the Suppliers name. Figure 4: Sample Label For applications around the world where AC Delco is not a recognized brand name, the local service representative shall give direction on how to proceed. Additionally, a bar code and/or a key code may be required by the General M
23、otors manufacturing groups. Reference the manufacturing requirements section of the SOR to determine if applicable. 4.3.4 Storage. The service compressor shall have any necessary added design features to insure it will remain fully functional when stored for 10 years in a field environment. The oil
24、must not be allowed to become saturated with moisture. We will change this to use wording from 4.2.9 of Opel spec. 5 Provisions for Shipping The compressor shall be compatible with commercial shipping by rail, truck or boat and include restraining provisions if necessary. Compressor degradation of a
25、ppearance, performance, or durability due to shipping is not acceptable. Particular demonstration concerns are fluid leaks, fastener torque, chafing/abrasion of line/hoses and cracking or separations. GM WORLDWIDE ENGINEERING STANDARDS GMW14789 Copyright 2006 General Motors Corporation All Rights Re
26、served April 2006 Page 15 of 17 a. Assemblies shall be packaged free from dust and foreign objects. b. A/C compressor assemblies shall be filled with lubricant below the point of leakage. The block fitting shall be covered with a shipping cap. Shipping caps for the part as delivered to our assembly
27、plants must conform to 52465700 or 52457600. 6 Notes 6.1 Glossary. Not applicable. 6.2 Acronyms, Abbreviations, and Symbols. COP Coefficient of Performance CTS Component Technical Specifications DV Design Validation PAG Polyalkylene glycol PV Product Validation RPP Reliability Program Plan TTF Test
28、to Failure VTS Vehicle Technical Specification 7 Additional Paragraphs 7.1 All parts or systems supplied to this specification must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 8 Coding System This specification shall be referenced in other documents, draw
29、ings, VTS, CTS, etc. as follows: GMW14789. 9 Release and Revisions 9.1 Release. The standard originated in November 2005. It was first approved by the Global HVAC Compressor Sub-System Leadership Team in March 2006. It was first published in April 2006. -,-,- GMW14789 GM WORLDWIDE ENGINEERING STANDA
30、RDS Copyright 2006 General Motors Corporation All Rights Reserved Page 16 of 17 April 2006 Appendix A Test Setup: This test will be run with actual system components on a typical system test facility. The compressor temperature shall be controlled as shown below. Break-in: Operate the compressor for
31、 2.0 h at 2000 RPM, 1620 kPa Discharge Pressure, 111 L/s evaporator flow at 27C X 60% RH. Test to be run at maximum belt loading conditions. Performance Range. The target is to ensure durability of the compressor in the vehicle refrigerating system during vehicle lifetime. Particularly all critical
32、operating modes of the compressor at idle- and high-speed operation have to be considered and need to be defined for the specific application. Component release is depending on meeting this specification in the unique A/C system and the given boundary conditions. 1. Compressor: mounting orientation
33、90 respective specified to application 2. Condenser: system component air or water cooled or special condenser for test bench 3. Drier: system component Accumulator: system component 4. Expansion device: system component 5. Evaporator: In A/C module assembly and blower or external air supply. Air du
34、cting and airflow to module specific Evaporator load shall be documented according to the test bench. 6. Refrigerant: Charge determination R 134a according to subcooling (+5 to +10C after condenser at the 1. durability schedule) 7. Refrigerant oil: kind and quantity 8. Components to be mounting in r
35、elative height to each other per the application within 25 mm. Test Setup: This test will be run with actual system components on a typical system test facility. The compressor temperature shall be controlled as shown below. Break-in: Operate the compressor for 2.0 h at 2000 RPM, 1620 kPa Discharge
36、Pressure, 111 L/s evaporator flow at 27C X 60% RH. Compressor should be cycled on/off 10s/20s. Test to be run at maximum belt loading conditions. Performance Range. The target is to ensure durability of the compressor in the vehicle refrigerating system during vehicle lifetime. Particularly all crit
37、ical operating modes of the compressor at idle- and high-speed operation have to be considered and need to be defined for the specific application. Component release is depending on meeting this specification in the unique A/C system and the given boundary conditions. 9. Compressor: mounting orienta
38、tion 90 respective specified to application 10. Condenser: system component air or water cooled or special condenser for test bench 11. Drier: system component Accumulator: system component 12. Expansion device: system component 13. Evaporator: In A/C module assembly and blower or external air suppl
39、y. Air ducting and airflow to module specific Evaporator load shall be documented according to the test bench. 14. Refrigerant: Charge determination R 134a according to subcooling (+5 to +10C after condenser at the 1. durability schedule). 15. Refrigerant oil: kind and quantity 16. Components to be
40、mounting in relative height to each other per the application within 25 mm. Test Cycle. Run a Single cycle 70 h and repeat for ten cycles. If necessary the sequence of the test points can be changed. However once sequence is established on the first cycle each repeating cycle shall be identical to the first. -,-,- GM WORLDWIDE ENGINEERING STANDARDS GMW14789 Copyright 2006 General Motors Corporation All Rights Reserved April 2006 Page 17 of 17 This represents a single cycle. Figure A1: Customer Usage Test Cycle -,-,-