Legacy GT Wagon AWD F4-2.5L DOHC (1997)
Fuel Injector: Description and Operation
PURPOSE/OPERATION
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The Multipoint Fuel Injection (MFI) System employs a gallery type (side-feed type) Fuel Injector.
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The gallery type Fuel Injector is installed in the Fuel Pipe to allow cooling of the Injector by the fuel.
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The features of this type of Fuel Injector are as follows:
1. High heat resistance.
2. Low driving noise.
3. Easy to service.
4. Small size.
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The Fuel Injector injects fuel according to the valve open signal received from the Engine Control Module (ECM).
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The nozzle is attached on the top of the Fuel Injector. The Needle Valve is lifted by the Solenoid Coil through the plunger on arrival of the valve
open signal.
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Since the injection opening the lifted level of valve and the regulator-controlled fuel pressure are kept constant, the amount of fuel to be injected
can be controlled only by the valve open signal from the ECM.