EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-4
GENERAL INFORMATION <4G1>
M2171000100849
Although the emission control systems are basically
the same as those of the 4G1-Non-Turbo engine
used in the COLT, the following improvements have
been added.
•The adoption of the catalytic converter just
beneath turbo charger and under the floor
increased the performance of the emission con
-
trols.
•The adoption of the check valve between the
purge control solenoid valve and the canister pro
-
tects the regurgitation as turbocharging.
•
SystemRemarks
Crank case ventilaton systemClosed type
Evaporative emission control systemElectronic control type with duty signal
Air/fuel ratio closed loop controlOxygen sensor signal used
Catalytic converterThree-way catalytic converter
The abolition of the EGR system
EMISSION CONTROL SYSTEM DIAGRAM
AK600530AB
Canister
Purge control
solenoid valve Fuel pressure control
solenoid valve
Check valve
Waste gate
solenoid valve Waste gate
actuator
Air
inlet
Catalytic
converter
Catalytic
converter Injector
From
fuel pump
Fuel pressure
regulator
To
fuel tank
Oxygen sensor
(front)
Oxygen sensor
(rear)
