Tohatsu MFS 30 — обзор системы зажигания и впрыска топлива для двигателей [102/319]

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Tohatsu MFS 30 [102/319] Ignition system
Fuel System (Fuel Injection)
4-20
25/30 2006
5. Ignition System
For ignition system, pointless CD ignition system is adopted, and ECU's electronic ignition timing control system controls
the timing to the most suitable state according to current operating conditions.
As engine is cranked, electric current is generated in the alternator's exciter coil and ECU charge coil, which is input to
ECU's regulator to feed power needed for operations of ignition coil, fuel injector and fuel feed pump (FFP).
Fuel Regulator
ECU
Fuel Feed Pump
(FFP)
Accessories
Spark Plugs
Ignition Coil
IG-COIL
Fuel Injector
MAT (Manifold Temperature)
Sensor
Throttle Position
Sensor
MAP ( Manifold Pressure ) Sensor
Water Temperature Sensor
Fuel Tank
Controls fuel feed pump (FFP).
Drives injectors.
Drives ignition coils.
Regulator
Exciter Coils
Pulser Coil #1
Pulser Coil #2
ECU Charge Coil
Charge Coil
Rectifier
Battery
(1) Configuration of Ignition System
Ignition system consists mainly of the following components.
(1) Sensors and switches that transmit engine operating states to ECU.
(2) ECU that performs electronic control.
(3) Ignition coils and spark plugs that operate in accordance with control by ECU.
The following 6 components are included in the sensors and switches of (1).
• Pulser coil Crank position (Crank Position Sensor)
• Throttle Position Sensor (TPS) Open/close of thrittle
• Water Temperature Sensor Temperature of cooling water
• MAP (Manifold Pressure) Sensor Vacuum pressure of intake air
• MAT (Manifold Temperature) Sensor Temperature of intake air
• Oil Pressure Switch Reduction of hydraulic pressure
MFS25_30_ch04.qxd 06.3.9 4:35 PM ページ 20

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Узнайте о системе зажигания и впрыска топлива, включая ключевые компоненты и их функции. Оптимизация работы двигателя с помощью современных технологий.