Mixture preparation

Exhaust gas recirculation

Exhaust gas recirculation

Exhaust gas recirculation (EGR) is a tried and tested method of reducing harmful substances. A defined quantity of exhaust gas is removed at the exhaust manifold and mixed back in with the intake air...

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Diesel injection system

Diesel injection system

Modern diesel engines must meet strict requirements. Drivers expect high power and torque values, low fuel consumption and quiet engine running. Furthermore, diesel engines must meet the strict...

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Secondary air system

Secondary air system

In petrol engine vehicles, secondary air injection is a proven method of reducing harmful substance emissions during cold starting. A petrol engine needs a "rich mixture" for reliable cold starting...

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