Catalytic Converter - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

ENGINE AND EMISSION CONTROL -

CATALYTIC CONVERTER

GENERAL INFORMATION
The three-way catalytic converter, together with
the closed loop air-fuel ratio control based on the
oxygen sensor signal, oxidizes carbon monoxides
(CO) and hydrocarbons (HC) and reduces nitrogen
oxides (NOx).
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Under Cover Removal and Installation (Refer to GROUP 51 - Front Bumper.)
D
Crossmember Bar Removal and Installation (Refer to GROUP 32 - Engine Roll Stopper, Centermember.)
D
13 ± 2 N·m
1
50 ± 5 N·m
Removal steps
1. Spring
2. Front exhaust pipe
3. Catalytic converter
49 ± 10 N·m
2
13 ± 2 N·m
Emission Control System
When the mixture is controlled at stoichiometric
air-fuel ratio, the three-way catalytic converter
provides the highest purification against the three
constituents, namely, CO, HC and NOx.
3
17-19
59 ± 10 N·m