Exhaust Gas Recirculation (Egr) System - Subaru LEGACY 2002 Quick Reference Index

EXHAUST GAS RECIRCULATION (EGR) SYSTEM

Emission Control (Aux. Emission Control Devices)
7. Exhaust Gas Recirculation (EGR) System
A: GENERAL
The EGR system aims at reduction of NOx by lowering the combustion temperature through re-
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circulation of a part of exhaust gas into cylinders via the intake manifold.
The EGR valve is controlled by the ECM according to the engine operating condition.
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(1) EGR valve
(2) ECM
(3) Intake manifold
(3)
(1)
(5)
(4) Exhaust port
(5) LH cylinder head
EC-10
(2)
(4)
B2H4304A