Mitsubishi Fuso CANTER FE85DE6SLGP, Shop Manual

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17E-2
1. Overview
1.1 Exhaust gas recirculation system
• In the exhaust gas recirculation system, the engine electronic control unit and multiple electronic drive units con-
trol the exhaust gas recirculation valve and intake throttle in accordance with information from sensors on various
aspects of the engine (engine speed, intake air quantity, coolant temperature, throttle opening, etc.).
• Exhaust gas recirculation involves the introduction of inert gases in the post-combustion exhaust emissions into
the intake manifold. By reducing the combustion temperature, it reduces the amount of nitrogen oxides (NOx),
which are harmful, in the exhaust emissions.
Further, an exhaust gas recirculation cooler cools the recirculated exhaust emissions, thereby reducing the peak
combustion temperature.
• The intake air quantity is adjusted by means of intake throttle control such that the effectiveness of exhaust gas
recirculation is maximized.
STRUCTURE AND OPERATION