Rodeo (4WD) V6-3165cc 3.2L SOHC (6VD1) (1993)
Fuel Injector: Description and Operation
Fuel Injector
PURPOSE
Injects a metered amount of highly atomized fuel at the back side of the intake valve.
DESCRIPTION
There are 6 injectors (one for each cylinder), each of which is installed between the cylinder head and delivery pipe. It injects fuel into the intake
port of a single engine cylinder according to the signal from Engine Control Module (ECM).
CONSTRUCTION
The injector assembly is a high impedance (12.2 ohms) , solenoid-operated, normally closed injection nozzle.
Fuel Injector
FUEL INJECTOR OPERATION
When the solenoid coil of the injector is energized by ECM, it becomes an electromagnet and attracts the plunger. This allows fuel to flow past the
ball valve, through flow director plate, into cylinder. As the lift stroke of the ball valve of the injector is set constant, the amount of fuel injected at
one time is determined by the length of time during which the solenoid coil is energized (injection time).
FUEL INJECTOR DRIVER OPERATION
The method of turning the Fuel Injectors "ON" and "OFF" is called a "Peak" and "Hold" Driver System.