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Introduction to Automotive Electrical and Electronic Systems . This chapter includes a discussion of automotive electrical and electronic systems. The focus is to provide a basic overview of the automotive electrical systems that are discussed in greater detail in later chapters. This will provide the student with knowledge of the purposes of the automotive electrical systems. The intent is to get the student, excited about this segment of the automotive repair industry and to support their decision to study this field.
VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS Chapter Vehicle electrical power supply systems 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS Overview of vehicle electrical power supply systems Vehicle electrical power supply system includes: Accumulator Alternator Alternator regulator Relays Charging indicator light… 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS ACCUMULATOR 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS Find out the function, requirements and classification of the accumulator? What types of accumulators are in common use and why? 14:39 # 01 In 20 minutes AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 2.1 Function, requirements and classification of the accumulator 2.1.1 Function: A battery supplies power to the starter and ignition system to start the engine A battery also supplies the extra power necessary when the vehicle's electrical load exceeds the supply from the charging system Automotive batteries acts as a voltage stabilizer in the electrical system 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 2.1 Function, requirements and classification of the accumulator 2.1.1 Function: An automotive battery converts chemical energy into electrical energy An automotive battery evens out voltage spikes and prevents them from damaging other components in the electrical system 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 2.1 Function, requirements and classification of the accumulator 2.1.1 Function: Figure 1: Accumulator 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 2.1 Function, requirements and classification of the accumulator 2.1.1 Function: 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 2.1 Function, requirements and classification of the accumulator 2.1.1 Function: In addition, the battery also provides power for other systems such as parking lights, CD, Radio, tablo meter, ECU, and hazard lights Hazard lights 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 2.1 Function, requirements and classification of the accumulator 2.1.1 Function: Batteries used in cars are usually 6V, 12V, 24V - Passenger cars often use 12V - Trucks use 24V or in series with two 12V batteries 14:39 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 10 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS Working principle of 6-pin Vibrating point voltage regulator When the engine is running at high speed 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 71 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.4 Working principle of voltage regulator • Vibrating point voltage regulator is often limited by limited excitation current and low regulator strength • After a period of regular maintenance, a long time of extension springs or conditions of use 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 72 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.4 Working principle of voltage regulator IC voltage regulator 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 73 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • Ignition switch in ACC or Lock position 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 74 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • Ignition switch is ON but ICE is not running 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 75 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • Ignition switch ON and ICE is running 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 76 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • IC voltage regulator Operation 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 77 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • When the alternator is generating power (voltage is lower than the regulator voltage) 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 78 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • When the alternator is generating power (voltage is higher than the regulator voltage) 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 79 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle Unusual operation: When the rotor winding is broken 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 80 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle Unusual operation: When the rotor winding is short circuited 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 81 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • Operation of the IC voltage regulator when the S terminal is disconnected 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 82 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • Operation of the IC voltage regulator when the B terminal is disconnected 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 83 VEHICLE ELECTRICAL POWER SUPPLY SYSTEMS 3.5 The control circuit works on the vehicle • Operation of the IC voltage regulator when the F is connected to ground 14:40 AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS 84 NGUYEN TAT THANH UNIVERSITY NTT INSTITUTE OF INTERNATIONAL EDUCATION Finish Lesson #1 Nguyễn Văn Tình 85