Fuel Injection Control System Injector; Drive Circuit Of Injector - Suzuki F6A Service Manual

Fuel injection control system Injector

A nozzle attached to the intake manifold is an injector. Equipped with an electromagnetic valve,
the injection time calculated by the ECM.
When electricity flows to the coil, it attracts the plunger and the needle valve, as it is incorporated to the plunger, also
moves to its full open position, allowing fuel to inject through the clearance between the needle valve and injector body.
How much fuel is injected is determined by how long the needle valve is open, that is, how long the coil is energized,
because other conditions such as the needle valve stroke, size of the injection port and fuel pressure against the pres-
sure at the injection point are all fixed.

Drive circuit of injector

The type of drive circuit of the injector is a voltage control type and current control type. This type of drive circuit includes
battery, Electronic Fuel Injection fuse, main relay, injector and ECM, where the built–in transistor turns ON according to
the fuel injection signal fed from the microcomputer, thereby electricity passes to the injector and fuel is injected.
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injects fuel according to
it