Low-emission strategies (Euro 6 in Europe and SULEV /PZEV in the USA)
- reduction of cold-start emissions
- rapid heating of the exhaust aftertreatment system
EA211 – Secondary air pump (SAP)
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Pierburg side-channel SAP
Setup and mode of operation
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Jetta Hybrid base engine
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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.
