1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW15701 Window Regulator Freeze Copyright 2013 General Motors Company All Rights Reserved August 2013 Page 1 of 5 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of conflict between the English and
2、 domestic language, the English language shall take precedence. 1.1 Purpose. To determine a window regulators performance when it is subjected to various wet conditions at freezing temperatures. 1.2 Foreword. A window regulator can have significantly different performance at varying environmental co
3、nditions. Because of the potential for water exposure and, therefore, a freeze condition in the door, this freeze performance evaluation is an important tool in fully comprehending the performance of the regulator. This test must be done on both the left and right hand window regulators. 1.3 Applica
4、bility. This procedure applies to all vehicles that have power window regulator as part of the door system. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additiona
5、l References. Program Specific Window Regulator Component Technical Specifications (CTS). 3 Resources 3.1 Facilities. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities and equi
6、pment may be used. However, all measuring variables as specified in this standard shall be quantified correctly with respect to their physical definition. 3.1.3 Environmental chamber must be capable of maintaining a constant test temperature of -30 C. 3.1.4 Environmental chamber must circulate air i
7、n a diffused fashion that does not cause a noticeable wind across the regulator, drying out the vehicle prior to the actual freeze event. 3.2 Equipment. 3.2.1 Fixture for holding the window regulator in vehicle position (if not using a door for testing). 3.2.2 Cart (or similar) to hold either the fi
8、xture or the door. 3.2.3 Two (2) 60 mL bottles. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15701 Copyright 2013 General Motors Compa
9、ny All Rights Reserved August 2013 Page 2 of 5 3.2.4 Syringe with an Intravenous (IV) catheter tube (or similar). 3.2.5 Appropriate equipment to supply 10.5 V stall voltage to the window regulator. For base power regulators, this should be applied directly to the motor terminals of the window regula
10、tor. For power systems with electronics, window movement control occurs via the Local Interconnect Network (LIN) communications in the electronics. 3.3 Test Vehicle/Test Piece. Either a regulator in a fixture or a regulator mounted in a door. 3.4 Test Time. Calendar time: 1 day Test hours: 4 hours C
11、oordination hours: 4 hours 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Prior experience in setting up and running similar tests and experience in the use of the referenced test equipment is critical to the overall quality of the results produced by this test. 4 Procedure 4.1
12、 Preparation. 4.1.1 Sample Preparation - Test Items. Requesting engineer should inspect the test items to ensure that all material listed in 3.3 is of the correct design level and has been assembled properly. 4.1.2 Sample Preparation - Window Regulator. Requesting engineer should ensure that the win
13、dow regulator is correctly mounted to the fixture or the door. 4.2 Conditions. 4.2.1 Environmental Conditions. All testing takes place at -30 C. 4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component dra
14、wings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Setup Instructions. 4.3.1.1 Place the door or fixture (with regulator attached) to a cart (or similar) and ensure that the regulator is in the car position. If using a fixture, the fixture should be level both fore/aft and cross-car. 4.
15、3.1.2 Ensure the ability to provide 10.5 V stall voltage to the window regulator. For base power regulators, this should be applied directly to the motor terminals of the window regulator. For power systems with electronics, window movement control occurs via the Local Interconnect Network (LIN) com
16、munications in the electronics. 4.3.1.3 Ensure the regulator is in the full-up stall position. 4.3.2 Test Operation Instructions. All at -30 C. 4.3.2.1 Place the cart (with fixture or door attached) in the chamber at -30 C and allow it to soak for 15 minutes. 4.3.2.2 Keep the regulator in the -30 C
17、chamber and apply one 60 mL bottle of water from ambient temperature to each side of the cable drum (targeting the cable and cable grooves) at 1 mL/s (or 1 minute to empty the 60 mL bottle). See Appendix A, Figure A1. 4.3.2.3 Allow the water to freeze for 15 minutes. 4.3.2.4 Use a syringe with an In
18、travenous (IV) catheter (or similar) to apply 5 mL of water to the cable drum. When applying the water, make sure to create ice in the entire empty groove of the cable drum. See Appendix A, Figure A2. Water may need to be applied multiple times to create the amount of ice as seen in Appendix A, Figu
19、re A2. Typically, four (4) applications are sufficient. The most effective way to achieve this is by applying small drops of water with the syringe, allowing them to freeze and building off each drop. 4.3.2.5 Allow the regulator to soak and the water to freeze for 30 minutes in the -30 C chamber. Co
20、pyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15701 Copyright 2013 General Motors Company All Rights Reserved August 2013 Page 3 of 5 4.3
21、2.6 After the 30-minute soak, power the regulator (10.5 V stall) in the down direction while monitoring the cable drum. Cycle the regulator up and down for a total of five (5) times and record any permanent or total loss of function. 5 Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Re
22、sults. Not applicable. 5.3 Test Documentation. Results must be reported to GM Engineering Lead Design Engineer (DE) using Data Sheet A1. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated wit
23、h 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 limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. CTS Component Technical Specif
24、ications DE Design Engineer IV Intravenous LIN Local Interconnect Network 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW15701 9 Release and Revisions This standard was originated in October 2007. It was first approved by Global Glass Gui
25、dance SSLT in October 2007. It was first published in January 2008. Issue Publication Date Description (Organization) 1 JAN 2008 Initial publication. 2 AUG 2013 Refresh. (Glass Guidance, Mirrors Global Subsystem Leadership Team) Copyright General Motors Company Provided by IHS under license with Gen
26、eral Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15701 Copyright 2013 General Motors Company All Rights Reserved August 2013 Page 4 of 5 Appendix A Figure A1: Application of 60 mL Water to Each Side of Cable D
27、rum Figure A2: Ice in the Entire Groove of the Cable Drum Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15701 Copyright 2013 General Mo
28、tors Company All Rights Reserved August 2013 Page 5 of 5 Data Sheet A1: Window Regulator Freeze Performance Note 1 Data Sheet to be filled out at the end of the test Body Make Test Engineer Body Model and Year Activity Report Body Style (circle one) COUPE SEDAN WAGON VAN Date Left Hand Front Window
29、Type Passed Test Yes No N/A If other than yes, explain in comments. Window System Comments Right Hand Front Window Type Passed Test Yes No N/A If other than yes, explain in comments Window System Comments Left Hand Rear Window Type Passed Test Yes No N/A If other than yes, explain in comments. Windo
30、w System Comments Right Hand Rear Window Type Passed Test Yes No N/A If other than yes, explain in comments. Window System Comments: Note 1: N/A = Not applicable Recorded by: Date: Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
