Low-emission strategies (Euro 6 in Europe and SULEV /PZEV in the USA)
Pierburg side-channel SAP
The SAP normally extracts the air from the engine air filter via a line or, alternatively, its own secondary air filter. The air is pumped to the secondary air valve.
Mechanical Turbo-Compound (Napier Nomad, Cummins-Scania, Volvo, Daimler, Iveco)
The turbocharger with the downstream power turbine and the transmission (Turbo Compound) is located on the hot side of the engine, which provides additional effective power of up to 35 kW to reduce fuel consumption.
The combination of exhaust turbocharger, Valvetronic and direct fuel injection is known as Turbo Valvetronic Direct Injection (TVDI).