1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards VEHICLE ALTERNATOR LOAD DUMP Do Not Use on New Programs. Being Replaced by GMW3091 EDS-T-5008 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008. 11. 04 VERSION: 4 (Superceded) EDS-T-5008VEHICLE ALTERNATOR LOAD DUMP PAGE: 1
2、/7 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008. 11. 04 VERSION: 4 GM DAEWOO Auto & Technology Note: This standard may be applied only for current project (incl. Variant Program). It is Superceded for all future projects and replaced by GMW3091. 1. PURPOSE To simulate emission emerge by numerical in
3、dex functional decrease of ALTERNATOR magnetic field when Battery (B+) Terminal is unexpectedly opened in vehicle manufactured by GMDAT (hereafter called the company). The overload is on vehicle wring system and may cause malfunction of electric devices. 2. Applicable extent Applied for ALTERNATOR,
4、System, Sub-System and Component to be effected. 3. TERM 3.1. Device Under Test (DUT) All electric devices to be tested. 3.2. Transient Described as changing status (between two-continuous normal conditions during short time considering time volume of observing item) or the volume. 4. DUT CONDITION
5、DUT should be mounted as sold to customer. 5. TEST EQUIPMENT 5.1. Digitizing oscilloscope Bandwidth should be over 500MHz at least and 1GIGA-sampling at minimum is to be available. 50 is applied for Input IMPEDANCE. 5.2. Resistive load 5.3. Voltage probe ATTENUATION RATIO should be 10:1 and IMPEDANC
6、E is to be over 1M at least. 5.4. Current PROBE Capacity for measuring 30A at minimum is required. 5.5. Current PROBE Amplifier Frequency measurement range should be over 48-440Hz, 20V-capacity is required. EDS-T-5008VEHICLE ALTERNATOR LOAD DUMP PAGE: 2/7 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008
7、. 11. 04 VERSION: 4 GM DAEWOO Auto & Technology 5.6. Load Dump Simulator Pulse Amplitude Adjust is to be 0-110% and Pulse Width should be equipped with 40mS500mS-capacity. 6. TEST 6.1. Actual road dump 6.1.1. The connection method of test equipment Connect test equipment as Fig.2. Insert Resistive l
8、oad for ALTERNATOR the maximum output on connecting test equipment. 6.1.2. Vehicle condition 6.1.3. Alternator maximum output condition - ALTERNATOR 6,500 RPM 6.1.4. Electric devices condition Set all Electric devices (On/Off available) to Off. 6.1.5. Decision method of Resistive load capacity Resis
9、tive load capacity (A) = ALTERNATOR maximum capacity (A) Current for vehicle operating (A) 6.1.6. Test method Relay 1,2 is momentary opened at the same time. Measure current/voltage Transient at power supply terminal of electronic system to be observed with DIGITIZING OSCILLOSCOPE. Observe waveform
10、by repeating road dump of 6-10times and malfunction of electric devices as well. 6.2. Simulation Load Dump Performed by applying numerically decreasing electric Transient to power supply terminal of electric devices from Load Dump Simulator 6.2.1. Connection method of test equipment Connect test equ
11、ipment as Fig.3. 6.2.2. Vehicle condition Alternator maximum output condition - ALTERNATOR 6,500 RPM 6.2.3. Electric devices condition Set all Electric devices (On/Off available) to Off. 6.2.4. Transient applied point Defined as Load Dump Observation point of, it signifies Power Terminal of Module t
12、o control Safety Critical Items regarding driving safety or passenger protection devices. (Refer to Appendix1) 6.2.5. Transient Voltage volume Specified as 125 %-amplified value of the maximum Transient Voltage waveform among waveforms of 6-10(quantity) at Actual Load dump performance. EDS-T-5008VEH
13、ICLE ALTERNATOR LOAD DUMP PAGE: 3/7 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008. 11. 04 VERSION: 4 GM DAEWOO Auto & Technology 6.2.6. Inner Impedance of Load dump Simulator Rs = (10VN) / (0.8I12000) V: Direct voltage (13.5V or 24 V) N: Actual rotation speed of ALTERNATOR at 2,000 RPM I: Current cap
14、acity of ALTERNATOR 6.2.7. Transient Rising time Tr = 10 mS 6.2.8. Transient Amplitude Set Transient to generate the maximum Transient Amplitude at Actual Load dump performance. 6.2.9. Transient Amplitude Setting Set Inner Impedance, Rising time, Amplitude of Load Dump Simulator after connecting it
15、to Transient applied point and process the setting by increasing Load Dump Simulator Output. Observe amplified waveform by connecting OSCILLOSCOPE to BNC waveform Terminal of Simulator. (Refer to Fig.1) 6.2.10. Test method Apply Transient 10times after connecting PROBE to waveform observation point
16、at Actual Load dump performance and Transient delayed time should be only 1% of Duty Cycle at this time. 1time: Print DUT I/O waveform by Graph after measuring. 9times: Record it after checking malfunction of electric devices. 6.3. Acceptance criteria (See Appendix 2) 7. REFERENCE STANDARD 7.1. EDS-
17、T-5008 (95.10.30) 7.2. GM EMC - 31 EDS-T-5008VEHICLE ALTERNATOR LOAD DUMP PAGE: 4/7 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008. 11. 04 VERSION: 4 GM DAEWOO Auto & Technology Fig1. Waveform Example at Actual Load Dump Test EDS-T-5008VEHICLE ALTERNATOR LOAD DUMP PAGE: 5/7 ISSUED DATE: 1993. 08. 10 R
18、EVISED DATE: 2008. 11. 04 VERSION: 4 GM DAEWOO Auto & Technology %*(*5*(*/(04$*-04$01&$633&/5130#&*(/48M?3.SIMULATED LOAD DUMP TEST SET-$-645&3-.“*/108&3 +.“*/108&3 -%65M45“35&3-0“%6.14*.6-“503BATTERY E+E-IRESISTIVE LOADM%*(*5*(*/(04$*-04$01&$633&/5130#&BATTERY.“*/18&3+3&-“:$0/530-3&-“:3&-“:*(/48M“-
19、5&3/“50345“35&3?2.* 0LOAD DUMP TEST SET-UP$-645&3-.“*/108&3 +.“*/108&3 -%65E-E+I- Fig 2. Real Vehicle load dump test set up Fig 3. Simulated load dump test set up EDS-T-5008VEHICLE ALTERNATOR LOAD DUMP PAGE: 6/7 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008. 11. 04 VERSION: 4 GM DAEWOO Auto & Technol
20、ogy # Appendix1. DUT Classification CONVENIENCE ITEM (CLASS A) CRITICAL ( CLASS B) SAFTY CRITICAL (CLASS C) -CLOCK OPERATION -RADIO OPERATION -ILLUMINATED ENTRY -KEYLESS ENTRY OPERATION -I/P CLUSTER OPERATION -CHIME MODULE OPERATION -PARK & MARKER LAMPS -TRIP ODOMETER OPERATION -NAVI. DISPLAY OPERAT
21、ION -CLIMATE CONTROL DISPLAY -DISPLAY INFORMATION -FUEL DATA CALCULATION -PROPER OPERATION OF TILTAIL-ENGINE RPM STABILITY -C/ CONTROL SPEED STABILITY -MAINTAIN CRUISE CONTROL -ELEC. CLIMATE CONTROL -TACHOMETER OPERATION -FUEL GAUGE OPERATION -DIMMING SENTINAL OPERATION-CRT DISPLAY OPERATION - BRAKI
22、NG ABILITY - ENG STALLING(ECU) -W/SHIELD DEFROST SYS. -POWER SEAT POSITION -TURN SIGNAL OPERATION - ABS MDL -TCM -AIRBAG MODULE -POWER WINDOW STABILITY-W/S WIPER EDS-T-5008VEHICLE ALTERNATOR LOAD DUMP PAGE: 7/7 ISSUED DATE: 1993. 08. 10 REVISED DATE: 2008. 11. 04 VERSION: 4 GM DAEWOO Auto & Technolo
23、gy #Appendix2. Acceptance Criteria I. CLASS A Acceptance Criteria - INJECTION TIME (Tinj) VARIATION: 10% below - IGNITION TIME VARIATION: 10% below Returning to ECU NORMAL condition after DISTURBANCE. II) CLASS B Acceptance Criteria - INJECTION TIME (Tinj) VARIATION: over 10% - IGNITION TIME VARIATI
24、ON: over 10% Returning to ECU NORMAL condition after DISTURBANCE III) CLASS C Acceptance Criteria - INJECTION SIGNAL Blackout - IGNITION SIGNAL Blackout Returning to ECU NORMAL condition after DISTURBANCE IV) CLASS D Acceptance Criteria - DEFAUL at CLASS B or C, Non-returning to ECU NORMAL condition after DISTURBANCE - Returning to NORMAL condition by initializing. V) CLASS E Acceptance Criteria - Required to repair ECU. TACHO SIGNAL INJECTOR SIGNAL Ignition IGNITIONSIGNAL
