Swift L4-1298cc 1.3L SOHC MFI (1997)
Throttle Body: Description and Operation
The throttle body consists of the main bore, air and/or fuel passage, vacuum passage (for MAP sensor, evaporative emission control system and EGR
system), air induction passage and the following pants.
-
Fuel injector which injects fuel according to the signal from ECM.
-
Fuel pressure regulator which maintains the fuel pressure to the injector a certain amount higher than the pressure in the intake manifold.
-
Throttle valve which is interlocked with the accelerator pedal and controls the amount of the air/fuel mixture drawn into the combustion chamber.
-
ISC actuator which controls minimum throttle valve position (opening) to adjust engine idle speed.
-
TP sensor which detects the throttle valve opening and sends a signal to ECM.
