1
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Exhaust Gas Recirculation (EGR) cooler
2
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Connecting pipe to the inlet manifold
3
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Valve cover/air filter housing connecting pipe
5
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Connection to the cylinder head
The EGR system consists of an EGR stepper motor, the EGR cooler and a connecting pipe to the inlet manifold.
The recirculated quantity of exhaust gas is regulated by an EGR stepper motor and can thereby be adjusted accurately.
The EGR stepper motor is actuated directly by the Powertrain Control Module (PCM) using pulse-width modulated signals.
The drawn in mass air flow, is calculated by the Mass Air Flow (MAF) sensor and used as an input variable.
The recirculated exhaust gas is cooled by an EGR cooler before it is forwarded to the inlet manifold.