Ingenieria Electrica

Engine Electrical

Engine Electrical

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Engine Electrical

MEMO

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Engine Electrical

Preface
As the electric devices of the vehicles are the same with the nervous systems of the human body, any malfunction of them will result to the defected vehicles. Therefore, it is necessary tounderstand the basic knowledge about the electric devices. Recently, the mechanical structure becomes to more complicate in order to protect the environments from the harmful exhausted gases and especially, the most parts of vehicles are comprised of the new electric devices for enhancing the performance of vehicles. Therefore, the scopes of the electrical knowledge to study shall be more enlarged andmore. This book is composed of the engine electrical generals varying for these situations.

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Engine Electrical

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Engine Electrical

Contents
1. Battery 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 The Principle of the battery·············································································································· 7 Purpose of battery ···························································································································· 7 The Kinds of the battery ··················································································································· 8 The structure of the lead-acid battery and the charging and discharging operation ······················· 9 Various characteristics of the lead-acidbattery ············································································· 16 Life time of the lead-acid battery ···································································································· 20 Charge of the lead-acid battery ····································································································· 20 MF battery······································································································································ 24

2. Starting System 2.1 2.2 2.3 2.4 The principles and kinds of the DC motor ····················································································· 25 Start motor ····································································································································· 29Structure and operation of the start motor ····················································································· 30 Starting-system trouble diagnosis ·································································································· 42

3. Charging System 3.1 3.2 3.3 3.4 3.5 Purpose of the charging system···································································································· 45 Single phase alternating current and 3-phase alternating current ················································· 45 Direct current alternator ················································································································· 48 Alternating current alternator ········································································································· 52Alternator regulator ························································································································ 56

4. Ignition System 4.1 4.2 4.3 4.4 Purpose of ignition system ············································································································· 61 Computer control type ignition system··························································································· 63 DLI (Distributor less Ignition) ········································································································· 75 Performance of the ignition system...