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ENGINE
B1B2023D
PRESENTATION OF ENGINE 384 F ( CFA)
Engine : CFA
Engine block
(5)
oil separator cover
An aluminium engine block
(4)
with a wall thickness of
7 mm
between the cylinder bores produces
an engine that is light and compact.
An oil separator
(6)
incorporated in the engine block
(4)
, where the exhaust gases pass, thus sepa-
rates the engine oil from the gases passing from the combustion chambers to the sump so as to
preserve the quality of the engine oil and to reduce oil consumption.
It is not possible to rebore the engine block given the type of channels
(7)
. The channels
(7)
present
an exterior
"fin-like
" structure which allows a larger surface of contact with the aluminium block by
dint of the numerous irregularities
"l"
. This solution enhances heat dissipation, thus reducing overall
temperature and deformation of the bores
Pistons.
"m"
resin coating.
(8)
compression ring
N°1
(9)
compression ring
N°2
(10)
scraper ring.
The pistons are in aluminium alloy.
The piston crowns are conical for enhanced combustion.
A new LFA coating (low friction resin and aluminium oxide) is used on the piston skirts.
The low tension piston rings give lower friction and thus reduced fuel consumption
B1B2022D
FR-C1-page022-92-2005 9/01/06 8:48 Page 28
