R750EU5 - IE3 - TE4 - IE4 - ISE4
English 8 Ed.8 / 10-2012
GB
ENGINE GENERAL DESCRIPTION
TECHNICAL INFORMATION
Engines of series R754 EU5 - R756
EU5 were designed and manufactured to
be installed on road vehicles, such as for
example road-cleaning vans, lorries, etc.,
on condition that they have been type-ap-
proved according to EURO 5 anti-pollution
directives. Model R754IE3, R756IE3,
R754TE4-IE4-ISE4 engines have been
designed for off-road use, tted in agricul-
tural machinery or load lifting machines.
The models of engine differ from each
other in both power and performan-
ce (See “Technical data R754EU5,
R756EU5, R754IE3, R756IE3, R754TE4-
IE4-ISE4”).
Main components R754IE3, R756IE3,
R754EU5, R756EU5
A) Cooler: cools the engine oil by heat
exchange with the coolant uid.
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 ow
into the suction manifold.
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 lter: It traps any impurity
G) Oil lter: 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.
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
T) Water manifold: It is used to collect the
coolant from the heads
U) high pressure injection pump: It feeds
the injectors with fuel under pressure
V) Injector: injects pressurised fuel into
the combustion chamber.
W) Antiparticulate lter R754EU5,
R756EU5: this is installed in the engine
exhaust pipe conduit. It serves to re-
tain the particulate so as to reduce the
emissions from diesel engines, which are
responsible for atmospheric pollution.
X) Air lter: for engine intake.
The air is ltered over 3 phases: in the
cyclone pre-separator , in the main lter
and in the safety lter.
Y) Debimeter R754EU5, R756EU5: it de-
tects the air mass that feeds the engine.
Z) Rail: stores pressurised fuel and distri-
butes it to the injectors.
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