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Engine Emission Control: Overview Jaguar XJ X351

Engine Control Systems 2 illustrations ~122 words

Scheme 72

Scheme 72: COMPONENT LOCATION
Scheme 72: COMPONENT LOCATION
Item NumberDescription
1Part load breather
2Full load breather

Scheme 73

Scheme 73
Scheme 73
Item NumberDescription
1Part load breather
2Full load breather

OVERVIEW

The engine emission control system reduces the level of hydrocarbon emissions released to atmosphere from the engine. The engine emission control system consists of a positive crankcase ventilation (PCV) system with part and full load breathers. Piston blow-by gases are drawn through the breathers into the engine air intake and added to the air charge. The resultant depression in the engine sump, front covers and cylinder head covers reduces the load on the joint seals in those areas.

PRINCIPLES OF OPERATION

For a detailed description of the engine emission control system and operation, refer to Engine Emission Control

More articles — Engine Emission Control