GME 17494-2015 Performance Evaluation of Seat Heating Systems (Issue 1 English Includes Appendix A).pdf
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1、EUROPEENGINEERINGSTANDARDSTest Procedure GME17494Performance Evaluation of Seat Heating Systems Copyright 2015 General Motors Company All Rights ReservedNovember 2015 Page 1 of 171 IntroductionNote: Nothing in this standard supercedes applicable laws and regulations.Note: In the event of conflict be
2、tween the English and domestic language, the English language shall takeprecedence.1.1 Purpose. This standard describes the evaluation of the performance of seat heating systems in the seatassembly.1.2 Applicability. To all seat heating system types.1.3 Remarks. This Test Procedure shall measure the
3、 seat heater mats temperature control behavior andheating characteristics during the heat-up curve (temperature over time) on seats in the climate chamber (single component) in the vehicle in the climate chamber in the vehicle during driving conditions (i.e., a road test).This standard shall also su
4、bjectively evaluate the seats in the vehicle to determine the overall Vehicle TechnicalSpecification (VTS) performance rating.Note: Tests with a single seat in a climate chamber are defined as a component test. Validation tests areconducted during the in-vehicle condition.Note: This standard is not
5、suitable for initial heater mat sampling tests.2 ReferencesNote: Only the latest approved standards are applicable unless otherwise specified.2.1 External Standards/Specifications.None2.2 GM Standards/Specifications.None2.3 Additional References.GM Serviceability Design Guidelines: GM handbook descr
6、ibing design methods and techniques to ensure thatthe operation of servicing GM vehicles is an efficient one.3 Resources3.1 Facilities.3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a validcalibration label.3.1.2 Alternatives. Alternative test faci
7、lities and equipment may also be used. However, all measuring variablesas specified in this standard shall be determined correctly with respect to their physical definition.3.1.3 Test lab with a temperature test chamber. The minimum requirements for the test chamber are describedin Table 1.GM EUROPE
8、 ENGINEERING STANDARDS GME17494 Copyright 2015 General Motors Company All Rights ReservedNovember 2015 Page 2 of 17Table 1: Test Chamber RequirementsChamber RequirementTest Area (L x W x H) 2.0 m x 1.5 m x 2.0 mTemperature Range (-15 to +25) CTemperature Stability 2 CRelative Air Humidity (10 to 90)
9、 %Rate of Temperature Variation 1.5 C/minuteElectrical Connection Controllable3.2 Equipment.3.2.1 Portable, shock and climate resistant measurement system with a valid calibration label.Measurement computer must be capable of capturing the data described in Table 2.Table 2: Measured ValuesData Value
10、Temperatures (-15 to +60) CVoltages (0 to 20) VCurrents (0 to 20) AAcquisition Rate 1 Hz3.2.2 Laptop computer for interpretation of measured data.3.2.3 Adapter for measurement signal conversion (shunt).3.2.4 Sixteen (16) thermocouples for determination of the seat surface temperature, vehicle interi
11、or temperatureand ambient temperature.3.2.5 Voltage/current measurement module for measuring system.3.2.6 Thermography camera or infrared thermometer for the localization of the heating wires. The thermographycamera is required to perform the thermography picture of the heated surface distribution.3
12、.2.7 External battery or transformer for measurement computer power supply or adapter for onboard supplysystem.3.2.8 Stop watch or onboard computer timer function.3.3 Test Vehicle/Test Piece.3.3 Test Vehicle/Test Piece. A seat heater mat, which shall be tested and evaluated in the seat and vehiclety
13、pe for which it is intended. The vehicle electrical system shall be dimensioned for connection of seat heating.Note: If the same seat heater mat is utilized for different seat equipment and trim levels, the heater mat shall beevaluated and validated separately for each equipment level.3.4 Test Time.
14、 Test time is dependent upon the control design of the heater mat to be tested. Cumulative testtimes including data recording time are shown.Note: Winter sessions are preferred for vehicle tests.Calendar time: 1 dayTest hours:Objective Evaluation:Heat-up curve measurement for determination of the te
15、mperature levels = 1-2-3 MeasurementGM EUROPE ENGINEERING STANDARDS GME17494 Copyright 2015 General Motors Company All Rights ReservedNovember 2015 Page 3 of 17 1 Stage Control: 45 minutes 3 Stage Control: 70 minutes 5 Stage Control: 110 minutesSubjective Evaluation and Measurement of heating perfor
16、mance under customer conditions =3-2-1 Measurement 1 Stage Control: 45 minutes 3 Stage Control: 90 minutes 5 Stage Control: 150 minutesCoordination hours: 10 h3.5 Test Required Information.3.5.1 The evaluation of the performance of the seat heating system shall be performed in the order described in
17、3.5.1.1 thru 3.5.1.3.3.5.1.1 Climate chamber test with single seats (component test).3.5.1.2 Vehicle test in the climate chamber or in comparable climate condition during driving operation.3.5.1.3 Subjective evaluation during driving operation.3.5.2 No vehicle test shall be performed until the resul
18、ts from a single seat test (component test) in the climatechamber are not according to specification.3.5.3 A subjective evaluation of the seat heating system in the vehicle during driving shall always be preferredto an evaluation in the climate chamber.3.5.4 Comfort evaluations in the climate chambe
19、r can only serve development purposes.3.6 Personnel/Skills.3.6.1 Tester. Test Engineer or lab technician with the proper training required to perform the seat heating testprocedure.Standard Tester:Weight: (75 5) kgHeight: (178 3) cm (178.6 cm equates to 50-percentile male in Germany)3.6.2 Comfort Ev
20、aluators. For subjective evaluation of comfort, five (5) individuals shall be chosen as arepresentative customer group. One (1) individual shall be of the standard size as described in 3.6.2.1. Theremaining four (4) comfort evaluators shall be of varying body measurements.3.6.3 Required Clothing. Je
21、ans, without long underwear. Cotton T-shirt. Light pullover (i.e., medium thick cotton or cotton mixed sweat shirt (250 to 300) g/m2).No jackets, no specific winter/ski wear, no belts or braces.Note: pay attention to double stitches and multiple layer (pockets)4 Procedure4.1 Preparation.4.1.1 Number
22、 of Temperature Measuring Points on the Seat.4.1.1.1 There shall be fourteen (14) thermocouples fixed onto the upholstered seat surface; seven (7) on theseat cushion and seven (7) on the seat back as shown in Figure 1.4.1.1.2 The fourteen (14) individual thermocouples shall each be soldered onto a p
23、iece of 15 mm x 15 mm(thickness of 0.2 mm) blackened copper foil.4.1.2 Location of Temperature Measuring Points on Seat and in Vehicle.4.1.2.1 Seat. Affix fourteen (14) thermocouples on the upholstered seat surface directly above the heating wireas shown in Figure 1 and described in Table 3.GM EUROP
24、E ENGINEERING STANDARDS GME17494 Copyright 2015 General Motors Company All Rights ReservedNovember 2015 Page 4 of 17Note: For the exact determination of heating wire location during seat heating running (Figure 2), perform athermography survey or measure surface temperature with an infrared temperat
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