GENERAL INFORMATION


<4B1>


The emission control is basically the same as the 4B12 engine mounted on the conventional OUTLANDER.

SYSTEM CONFIGURATION DIAGRAM


<4B11>

<4B12>

<6B3>


Based on the controls of the 6B31 engine equipped on the conventional OUTLANDER, the following change has been made.
Improvement / Addition
 Remark
Disuse of variable induction system
 System simplified



Exhaust gas cleaning devices list
System
 Objective / Function
 Composition parts
Crankcase ventilation system
 HC decrease
Re-combustion of blow-by gas.
 Positive crankcase ventilation (PCV) valve
Evaporative emission control system
 HC decrease
Re-combustion of blow-by gas.
  • Canister
  • Purge control solenoid valve
Exhaust gas recirculation system <4B1>
 NOx decrease
Reduce NOx generation by controlling EGR volume according to engine warm-up condition and driving conditions.
 Exhaust gas recirculation valve
Emission reduction systems
 Air-fuel ratio feedback control
 Decrease of CO, HC and NOx
Controls air-fuel ratio of air-fuel mixture to become theoretical air-fuel ratio (about 14.7), which is when the 3-way catalytic converter’s cleaning performance is best. It also controls optimum fuel supply based on coolant temperature, driving conditions etc.
  • Engine-ECU
  • Air flow sensor
  • Injector
  • Oxygen sensor
  • Crank angle sensor etc.
Catalytic converter
 Decrease of CO, HC and NOx
It facilitates oxidation of CO and HC and reduction of NOx so that all 3 component gases are cleaned simultaneously.
 Monolith catalyst