•  In addition to the intake manifold valve fitted to the base engine, this engine also has an air bypass valve. It is adjusted by means of an air bypass valve actuator while the diesel particulate filter is being regenerated.

•  The intake air joins the turbocharger outlet directly to the air pipe and bypasses the intake air.

•  The uncooled intake air, which the air bypass guides to the additional air bypass valve, is measured by the valve during the regeneration process.

•  As a result of introducing this device, the air mass guided through the charge air cooler during the regeneration phase is reduced and at the same time the uncooled air mass coming from the air bypass increases.

•  This reduces the engine"s volumetric efficiency and at the same time keeps the intake air temperatures constant to prevent variations in exhaust gas temperatures during regeneration.