VM R750EU6 Manual De Instrucciones página 86

MAIN COMPONENTS R756EU6
A) Cooler: cools the engine oil by heat
exchange with the coolant fluid.
GB
B) Turbo device: Made up of a turbine
which exploits a part of the exhaust gas
energy to carry out the engine turbochar-
ging.
C) "EGR" valve: modulates the recircula-
tion of exhaust gasses before they flow
into the suction manifold
R754TE4-ISE4 engine models).
D) "waste-gate" valve: It controls the turbo
device activation, depending on the pres-
sure of the exhaust gases
E) Heat expansion valve: It adjusts the
water temperature according to the engi-
ne working temperature
F) Fuel filter: It traps any impurity
G) Oil filter: It traps any impurity
H) Oil sump: It contains the engine lubri-
cation oil
L) Suction manifold: conveys the combu-
stion air into the combustion chamber.
M) Water pump: feeds the cooling circuit
N) Driving belt (type Poly-V): it starts
service devices, the alternator (Q) and the
water pump (M).
P) Automatic belt tightener: it keeps the
belt constantly tightened.
English
(not installed on
10
R750EU6 - TE4 - IE4 - ISE4
Q) alternating current generator: It pro-
duces and regulates the electric system
voltage
R) Starter: It is used to start the engine
S) Exhaust manifold: It is used to expel
the combustion gases
U) high pressure injection pump: It feeds
the injectors with fuel under pressure
V) Injector: injects pressurised fuel into
the combustion chamber.
W) After Treatment System (ATS): it is
composed of a DPF filter + DOC oxyda-
tion catlyst (w1) and SCR catalytic con-
verter (w2). The SCR catalytic converter
is provided only for R750EU6 engine
models. See paragraph "After Treatment
Exhaust Gas System" in order to know the
working principles.
X) Air filter: for engine intake.
The air is filtered over 3 phases: in the
cyclone pre-separator , in the main filter
and in the safety filter.
Y) Debimeter: it detects the air mass that
feeds the engine.
Z) Rail: stores pressurised fuel and distri-
butes it to the injectors.
2056G