16
SECTION 2 - OPERATING DIAGRAMS
CURSOR SERIES
Base - 03/2015 Print P4D32C006 E
Oil vapour recirculation (Blow-by)
Part of the gas produced by combustion leaks out of the piston gaskets through the openings of the piston rings, into the sump
and mixes with the oil vapour it contains.
This mixture is conveyed upwards and is partially separated from the oil by a device located at the top of the timing system cover
and sent into the air intake circuit.
The device is essentially composed of a rotary filter fitted to the high pressure pump/camshaft control shaft and a rear cover
housing the normally closed valves that manage the flow of the mixture.
A pressure sensor that detects the clogging of the Blow-by filter is located on the rocker arm cover.
By measuring the pressure under the rocker arm cover, it is also able to detect the presence of fuel in oil.
Figure 20
221061
1. Blow-by box cover - 2. O-Ring - 3. Blow-by filtering element - 4. Cover - 5. Gasket
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