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Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (Engine Emission Control - INGENIUM I4 2.0L Petrol -- XE/(760)) >> Engine Emission Control - INGENIUM I4 2.0L Petrol (G2006474) >> Description And Operation >> Engine Emission Control >> Description >> Engine Vent Oil Separator

Engine Vent Oil Separator

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

The breather consists of an engine vent oil separator, positive crankcase ventilation valve and a flexible hose. The engine vent oil separator and the positive crankcase ventilation valve are installed in the top of the camshaft carrier. The flexible hose is connected to the turbocharger input duct connector. The part load plastic hose is connected to the intake manifold input spigot connector.

The engine vent oil separator is installed in a channel in the top of the camshaft carrier. A baffle plate, which incorporates a gas intake and an oil drain, is installed over the channel.

The gas and oil vapor pass over the engine vent oil separator. The oil drains to the camshaft carrier, and via an oil drain valve into the oil pan. The vapor is drawn either into the turbocharger via a flexible hose attached to the turbocharger inlet duct, or into the intake manifold spigot from the camshaft cover.



The Engine Vent Oil Separator and the Positive Crankcase Ventilation valve are installed in a channel in the top of the camshaft carrier. The flexible hose connects to the Turbocharger input duct connector. A Baffle Plate, which incorporates a gas intake and an oil drain, is installed over the channel.

Piston blow-by gases are drawn through the Engine Vent Oil Separator into the engine air intake manifold and added to the air charge. The depression caused by the engine air intake draws gasses from the crankcase, through the Engine Vent Oil Separator and the hose into the intake manifold.

The resultant depression in the engine oil pan, engine front covers and cylinder head covers reduces the load on the joint seals in those areas. Engine oil drawn into the Engine Vent Oil Separator is collected on angled plates in the separator. The oil collects on the plates and falls back to the oil pan via a hole in the cylinder block.

For additional information, Refer to: ELECTRONIC ENGINE CONTROLS