Tài liệu xe ô tô hyundai excel toàn tập hyundai excel
ENGINE ELECTRICAL SYSTEM Return To Main Table of Contents GENERAL CHARGING SYSTEM 18 IGNITION SYSTEM 30 STARTING SYSTEM 35 GENERAL GENERAL SPECIFICATIONS Distributor U.S.A U.S.A Federal Auto T/M California Manual T/M and auto T/M Federal Manual T/M Type Advance mechanism Contact pointless type with electronic control unit (Electronic ignition system) Centrifugal type and vacuum type Firing order Centrifugal advance - Crankshaft degrees at crankshaft speed rpm Initial Middle Final Vacuum advance-Crankshaft degrees at in Hg (mmHg) Initial 0°/-3.15 (-80) Final 23°/-11.02 (-280) Idle advance-Crank degrees at in Hg (mmHg) 2.5° (High-altitude) 0.03 in (0.8 mm) Air gap 1-3-4-2 0°/1,500 5°/2,500 16°/6,000 0°/-3.15 (-80) 20°/-14.2 (-360) 2.5° 0.03 in (0.8 mm) Ignition Coil E-064 or PN 22C 1.1 - 1.3 11.6 - 15.8 1.2 - 1.6 Over 50 Model No Primary coil resistance at 20°C (68°F) Q Secondary coil resistance at 20°C (68°F) kQ External resistor resistance at 20°C (68°F) Q Insulation resistance by 500V Megger MS2 Spark Plug U.S.A Factory installed Manufacturer RN9YC4 CHAMPION (0.039-0.043 in.) 1.0-1.1 mm BUR6EA-11 NGK (0.039-0.043 in.) 1.0-1.1 mm plug Alternate plug 27-2 Plug gap GENERAL Starter Motor output No of pinion teeth No-load characteristics (Free-running) Terminal voltage Amperage draw Minimum speed Pinion gap Alternator output Regulator setting Temperature compensation (Tk) Voltage regulator type A/T Power Steering M/T 0.9 kW 12V 0.7 kW 12V 11.5 V Less than 60A More than 6,600 rpm 0.0197-0.079 in (0.5-2 mm) 11.5 V Less than 60A More than 6,500 rpm 0.0197-0.079 in (0.5-2 mm) BOSCH MELCO 12V - 55A 12V - 60A 14.5v ± 0.1V (20°C) 14.7V ± 0.3V (20°C) -7 mV/°C ± 3mV/°C -10 mV/°C ± 2mV/°C Electronic type Built-in brush holder Battery Type Ampere hours Cold cranking [-17 ± 1°C (0°F)] Reserve capacity Life cycle MF PT 60 (Maintenance-Free battery) 60 Amp hr 400 Amps 90 275 NOTES (a) CRANKING RATING is the current a battery can deliver for 30 seconds and maintain a voltage of 7.2 or greater at a specified temperature (b) RESERVE CAPACITY RATING is the amount of time a battery can deliver 25A and maintain a minimum terminal voltage of 10.5 at 26.7°C (80°F) 27-3 GENERAL CHARGING SYSTEM Troubles in the charging system may be due to improper fan belt tension, wiring, connector, a defective electronic voltage regulator or a bad battery What is important in troubleshooting the charging system, is to determine whether the trouble is due to a rundown or overcharged battery Check the batteries condition before checking alternator Malfunctions of the IC alternator include the following: Dead battery; o Faulty (open) IC regulator o Faulty (broken wire, short circuit) field coil o Faulty main diode o Faulty auxiliary diode o Faulty stator coil o Faulty brush contact Over charging: No IC regulator control (short circuit) In addition to the above, problems with the adjustment voltage may occur, but these are extremely rare Use the following procedure for inspection Symptom Remedy Probable cause Charging warning indicator does not light with the ignition switch in the “ON” position and engine off Fuse blown Light burned out Wiring connection loose Electronic voltage regulator faulty Check fuses Replace light Tighten loose connections Replace the alternator Charging warning indicator does not go out with engine running (Battery requires frequent recharging) Drive belt loose or worn Battery cables loose, corroded or worn Fuse blown Fusible link blown Electronic voltage regulator or alternator faulty Wiring faulty Adjust tension or replace drive belt Repair or replace cable Replace fuses Replace fusible link Check alternator Electronic voltage regulator faulty Check alternator Overcharge 27-4 Repair wiring GENERAL Open hood and fit fender covers Check drive belt tension Fig Using belt tension gauge it available Alternatively, total free movement measured on the longest span of the belt should be 0.4 in, (9 mm) applying normal fingertip pressure (100N: 22 Ibs.) Fig Check battery condition Refer battery service adjustment procedure Check charging circuit wiring continuity, Fig Disconnect battery ground lead, remove the alternator “L” and “R” terminals Refit ground lead and switch on ignition Connect a 0-20V range voltmeter, between a good ground and each of the “L” and “R” terminals, in turn The voltmeter should read approximately battery voltage in all cases: a zero volt indicates an open circuit A - “L” and “R” terminals B - Voltmeter Fig Connect output test circuit, Fig Switch on headlamps, heater blower motor and rear heated glass, where fitted Start engine, run it at 3,000 rev/min Vary resistance to increase load current Rated output should be reached without voltage dropping below 13 volts Switch off ignition, headlamps, heater blower motor and rear heated glass and disconnect test circuit A - Ammeter B - Voltmeter C - Rheostat-Resistor should be 30 amps rating Fig Connect ‘positive side’ volt drop test circuit and reconnect alternator “L” and “R” terminal, Fig Switch on headlamps, start engine, and check volt drop Run engine at 3,000 rev/min If voltage is in excess of 0.5 volt, this indicates a high resistance on the positive side of the charging circuit which must be located and rectified 10 Switch off ignition and headlamps Fig 27-5 GENERAL 11 Connect ‘negative side’ volt drop test circuit, Fig 12 Switch on headlamps, start engine and check volt drop Run the engine at 3,000 rev/min Check the voltmeter reading If the reading is in excess of 0.25 volt, this indicates a high resistance on the negative side of the charging circuit which must be located and rectified 13 Switch off ignition and headlamps and disconnect test circuit Fig 14 Connect control voltage test circuit, Fig 15 Start engine and check regulator voltage Run engine at 3,000 rev/min Note ammeter reading When this falls to between and amps, check the voltmeter reading, it should be 13.7 to 14.5 volts If reading is outside specified limits, regulator is defective 16 Switch off ignition and disconnect test circuit 17 Disconnect battery ground lead 18 Refit alternator “L” and “R” terminals and refit battery ground lead 19 Remove fender covers, close hood Handling Precautions Make sure that alternator, battery, etc., are connected properly If battery polarity is reversed, excessive current will flow from battery to alternator, and damage to diodes or wiring harness could result Using a Megger or other high-voltage tester for the inspection will cause damage to the diodes Do not disconnect battery terminals while engine is running Surge voltage will be produced which could cause deterioration of diodes or transistors When battery is to be quick-charged be sure to disconnect battery terminals first If terminals are not disconnected, damage to diodes could result When a steam cleaner is used, make sure that alternator is not directly exposed to steam 27-6 Fig GENERAL STARTING SYSTEM The troubles of starting system may be divided into “Starting motor does not turn”, “Starting motor turns but engine does not start” and “It takes some time before engine starts” When there is something wrong with starting system, therefore, it is important to determine which part of starting system is defective before removing the starter Generally, starting difficulty, aside from inoperative starting motor, is attributable to defective ignition system, fuel system, battery, electrical wiring, etc If makeshift corrective steps are taken without locating the cause, the same trouble will develop again Starter motor does not turn Check Turn ignition switch to “ST” Does solenoid make operating sound ? Dead battery Loose terminal B wire Faulty wiring between battery and terminal B No Yes Starter motor defective or engine is frozen Is voltage available at S terminal magnetic switch ? No Yes Starter motor defective Inhibitor switch defective (A/T only) Defective wiring between battery and magnetic switch Refer to page 27-36 and inspect starter motor Repair wiring 27-7 GENERAL Starter motor turns but engine does not start Does initial engine start occur ? No Ignition system or fuel system defective Yes Is starter motor pinion moving away from flywheel teeth too early ? Yes Starting motor defective Refer to page 27-36 and inspect starter motor 27-8 No Ignition system or fuel system defective Overrunning clutch slipping GENERAL 27-9 GENERAL Checking the Voltage Drop between Terminals B and M To measure the voltage drop between contacts B and M, make the connections shown in the illustration If the voltage drop is 1V or more, it may prevent the engine from starting in cold weather, so replace the switch assembly CAUTION Connect the voltmeter during cranking If the voltmeter is connected before the starting motor is operated, it could be damaged by an inflow of 12V NOTES (a) Disconnect the battery ground cable before doing any inspection work (b) Do not direct a steam cleaner at any of the switches; water inside the switches could cause them to malfunction IGNITION SYSTEM-DIAGNOSIS The cause for hard engine starting or malfunction is not always in ignition system Defective parts may exist in fuel-system or the engine itself The role of ignition system is to generate sufficient electric sparks at proper time To check ignition system, therefore, it is necessary that spark check and timing measurement are thoroughly performed For on-vehicle troubleshooting of ignition system, the short cut is to determine on the basis of symptoms (phenomena) which circuit is defective, the power supply, primary low tension circuit or high tension circuit For example, when all spark plugs fail to produce sparks, probable cause is in power supply or primary circuit If misfiring occurs only at a specific spark plug, the high tension or secondarycircuit is likely to be defective If misfiring occurs occasionally, loose leads or spark plugs can be suspected If good sparks are produced but engine is in poor condition, probable cause is incorrect timing or defective spark plugs 27-10 ... (High-altitude) 0.03 in (0.8 mm) Air gap 1-3 - 4-2 0°/1,500 5°/2,500 16°/6,000 0° /-3 .15 (-8 0) 20° /-1 4.2 (-3 60) 2.5° 0.03 in (0.8 mm) Ignition Coil E-064 or PN 22C 1.1 - 1.3 11.6 - 15.8 1.2 - 1.6... CHAMPION (0.03 9-0 .043 in.) 1. 0-1 .1 mm BUR6EA-11 NGK (0.03 9-0 .043 in.) 1. 0-1 .1 mm plug Alternate plug 2 7-2 Plug gap GENERAL Starter Motor output No of pinion teeth No-load characteristics (Free-running)... 0.019 7-0 .079 in (0. 5-2 mm) 11.5 V Less than 60A More than 6,500 rpm 0.019 7-0 .079 in (0. 5-2 mm) BOSCH MELCO 12V - 55A 12V - 60A 14.5v ± 0.1V (20°C) 14.7V ± 0.3V (20°C) -7 mV/°C ± 3mV/°C -1 0 mV/°C